2011 – Present

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Recently, we have been developing novel fluorescence probes, focusing on two photon absorbing materials as well as bio- and nano materials. After synthesizing bioconjugated molecules of therapeutic activity and nano biosensors for early diagnosis of disease, we look for application of bio-imaging and disease diagnosis.

A Nano-Aggregatable Acedan Derivative for Clathrin-Mediated Cellular Uptake and Two-Photon Imaging of Diabetes-Associated Lipid Droplets

A. Shil, C. W. Song, S. Sarkar,* and K. H. Ahn*
ACS Nano 2024, XXXX, XXX, XXX-XXX.

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Nitroreductase-Triggered Fluorophore Labeling of Cells and Tissues under Hypoxia

Y. J. Yang, Y. L. Jung, A. Shil, S. Sarkar,* and K. H. Ahn*
Anal. Chem. 2024, 96, 11318–11325.

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Anticancer Prodrug Capable of Mitochondria-Targeting, Light-Triggered Release, and Fluorescence Monitoring

Y. L. Jung, Y. J. Yang, A. Shil, S. Sarkar, and K. H. Ahn*
ACS Appl. Bio Mater. 2024, 7, 3991–3996.

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A General Strategy Toward pH-Resistant Phenolic Fluorophoresfor High-FidelitySensing and Bioimaging Applications

S. Sarkar,* A. Shil, S. Maity, Y. L. Jung, M. Dai, A. Acharya,* and K. H. Ahn*
Angew. Chem., 2023, e202311168.

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Strategies to convert organic fluorophores into red/near-infrared emitting analogues and their utilization in bioimaging probes

M. Dai, Y. J. Yang, S. Sarkar, and K. H. Ahn*
Chem. Soc. Rev.,  2023, 52, 6344–6358.

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Interactive Twin Intramolecular Hydrogen Bonds Enable Bright, S-Blue Emissive, Environment-Insensitive Single-Benzene Fluorophores

S. Sarkar, A. Shil, Y. W. Jun, Y. J. Yang, W. Choi, S. Singha,* and K. H. Ahn*
Adv. Funct. Mater. 2023, 2304507.

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Cell-Membrane-Localizing Fluorescence Probes for Aminopeptidase N

Y. J. Yang, M. Dai, and K. H. Ahn*
ACS Sens. 2023, 8, 2791–2798.

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Dissecting the Crosstalk between Bisulfite and Hypochlorous Acid in the Reaction-Based Fluorescence Detection with Dicyanovinyl-Based Probes

H. R. Kim, A. Shil, S. Sarkar*, and K. H. Ahn*
J. Org. Chem. 2023, 88, 5563–5571.

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A Small-Molecule Fluorescence Probe for Nuclear ATP

U. Tamima, S. Sarkar, M. R. Islam, A. Shil, K. H. Kim, Y. J. Reo, Y. W. Jun, H. Banna, S. Lee, and K. H. Ahn*
Angew. Chem.Int. Ed. 2023, 62,  e2023005.

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Rapid Point-of-Care Quantification of Human Serum Albumin in Urine Based on Ratiometric Fluorescence Signaling Driven by Intramolecular H-Bonding

S. Sarkar*, A. Shil, Y. L. Jung, S. Singha, and K. H. Ahn*
ACS Sens. 20227, 3790–3799.

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Fluorophore Labeling of Proteins: a Versatile Trigger–Release–Conjugation Platform Based on the Quinone Methide Chemistry

Y. L. Jung, S. Sarkar, J. Ha, S. B. Park, and K. H. Ahn*
Bioconjugate Chem. 202233, 1543–1551.

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Discrimination of Invasive Human Skin Tumor Using an Ultrafast ATP–Proton AND-Gate Probe

Y. W. Jun,* K. H. Kim, Y. J. Yang, Y. Jung, K. Kim, H. Kim, B. H. Oh,  K. H. Ahn*
ACS Sens. 2022, 7, 1068–1074.

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A π-Stacking Based Fluorescent Probe for Labeling of Flavin Analogues in Live Cells through Unusual FRET Process

S. Biswas, S. Sarkar,* A. Shil, T. S. Demina, K. H. Ahn,* and S. Bhuniya*
Anal. Chem. 2022, 94, 3494–3500.

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A Two-Photon Ratiometric Sensing Platform Based on Solid-State Luminescent Benzocoumarin: Application to Prolonged Bioimaging of Hydrogen Peroxide

H.R. Kim, S. Sarkar, and K. H. Ahn*
Chem. Asian J. 2022, 17, e202101317.

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Rationally Designed Two-Photon Ratiometric Elastase Probe for Investigating Inflammatory Bowel Disease

S. Sarkar,* A. Shil, M. Nandy, S. Singha, Y. J. Reo, Y. J. Yang, and K. H. Ahn*
Anal. Chem. 2022, 94, 1373−1381.

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Ratiometric Detection of Hypochlorous Acid in Brain Tissues of Neuroinflammation and Maternal Immune Activation Models with a Deep-Red/Near-Infrared Emitting Probe

K. H. Kim, S. J. Kim, S. Singha, Y. J. Yang, S. K. Park* and K. H. Ahn*
ACS Sens. 20216, 3253–3261.

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NAD(P)H Quinone Oxidoreductase-1 in Organ and Tumor Tissues: Distinct Activity Levels Observed with a Benzo-rosol-Based Dual-Excitation and Dual-Emission Probe

Y. J. Yang, M. Dai, Y. J. Reo, C. W. Song, S. Sarkar, and K. H. Ahn*
Anal. Chem. 2021 93, 7523–7531.

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Environment-insensitive two-photon ratiometric probe for in cellulo quantitative measurement of hydrogen peroxide

S. W. Cho, Y. W. Jun, Y. J. Reo, S. Sarkara and K. H. Ahn*
Results in Chemistry 20213, 100117–100122.

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Imidazolyl–benzocoumarins as ratiometric fluorescence probes for biologically extreme acidity

H. R. Kim, S. Sarkar, M. Nandy, and K. H. Ahn*
Spectrochimica acta. Part A, 2021248, 119088–119097.

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Structurally Compact, Blue–Green–Red Fluorescence Trackers for the Outer Cell Membrane: Zwitterionic (Naphthylvinyl)pyridinium Dyes

Y. J. Reo, S. Sarkar, M. Dai, Y. J. Yang, and K. H. Ahn*
ACS Appl. Bio Mater. 20214, 2089–2096.

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Toward Ratiometric Detection of NAD(P)H Quinone Oxidoreductase-1: Benzocoumarin-Based Fluorescent Probes

M. Dai, C. W. Song, Y. J. Yang, H. R Kim, Y. J. Reo, K. H. Ahn*
Sens. Actuators B Chem. 2021330, 129277–129286.

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A Study on Hypoxia Susceptibility of Organ Tissues by Fluorescence Imaging with a Ratiometric Nitroreductase Probe

S. Sarkar, H. Lee, H. G. Ryu, S. Singha, Y. M. Lee, Y. J. Reo, Y. W. Jun, K. H. Kim, W. J. Kim, and K. H. Ahn*
ACS Sens., 2021,  6, 148–155.

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Electronic Effects on the Depropargylation Process in the Reaction‐based Fluorescent Detection of Palladium Species: Benzocoumarin‐based Ratiometric Sensing Systems

S. W. Cho,  Y. J. Reo, S. Sarkar, and K. H. Ahn*
Bull. Korean Chem. Soc., 202142, 135–139.

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Development of Photo- and Chemo-stable Near-Infrared-Emitting Dyes: Linear-Shape Benzo-Rosol and Its Derivatives as Unique Ratiometric Bioimaging Platforms

M. Dai, Y. J. Reo, C. W. Song, Y. J. Yang, and K. H. Ahn*
Chem. Sci. 202011, 8901–8911.

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A benzo[b]xanthene-derived fluorescent probe capable of two-photon ratiometric imaging of lysosomal cysteine with high specificity

U. Tamima, C. W. Song, M. Santra, Y. J. Reo, H. Banna, M. R. Islam, and K. H. Ahn*
Sens. Actuators B Chem. 2020322, 128588–128597.

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Synthesis of Near‐Infrared‐Emitting Benzorhodamines and Their Applications to Bioimaging and Photothermal Therapy

M. Dai, H. Lee, Y. J. Yang, M. Santra,* C. W. Song, Y. W. Jun, Y. J. Reo, W. J. Kim,* and K. H. Ahn*
Chem. Eur. J. 202026, 11549–11557.

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Systematic study on discrepancy of fluorescent properties between in solutions and in cells: Super-bright, environment-insensitive benzocoumarin dyes. 

M. Dai, H. Lee, Y. J. Yang, M. Santra,* C. W. Song, Y. W. Jun, Y. J. Reo, W. J. Kim,* and K. H. Ahn*
Chem. Eur. J. 202026, Y. J. Reo, Y. W. Jun, S. W. Cho, J. Jeon, H. Roh, S, Singha, M. Dai, S. Sarkar, H. R. Kim, S. Kim, Y. Jin, Y. L. Jung, Y. J. Yang , C. Ban, J. Joo, K. H. Ahn
Chem. Commun. 202056, 10556-10559.

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Cell-Membrane-Localizing, Two-Photon Probe for Ratiometric Imaging of γ-Glutamyl Transpeptidase in Cancerous Cells and Tissues

Y. J. Reo, M. Dai, Y. J. Yang, and K. H. Ahn*
Anal. Chem. 202092, 18, 12678–12685.

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Bent‐Benzocoumarin Dyes that Fluoresce in Solution and in Solid State and Their Application to Bioimaging

M. Dai, S. Sarkar, C. W. Song, Y. J. Reo, Y. J. Yang, and K. H. Ahn*
ChemPhotoChem. 20204, 721–728.

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A Caveat to Common Hemicyanine Dye Components and Its Resolution

H. J. Park, C. W. Song, S. Sarkar, Y. W. Jun, Y. J. Reo, M. Dai, and K. H. Ahn*
Chem. Commun202056, 7025–7028.

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Frontiers in Probing Alzheimer’s Disease Biomarkers with Fluorescent Small-Molecules

Y. W. Jun, S. W. Cho, J. Jung, Y. Huh, Y. Kim,* D. Kim,* and K. H. Ahn*
ACS Cent. Sci. 20195, 209–217.

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Ratiometric Imaging of γ-Glutamyl Transpeptidase Unperturbed by pH, Polarity, and Viscosity Changes: A Benzocoumarin-Based Two-Photon Fluorescent Probe

Y. J. Reo, Y. W. Jun, S. Sarkar, M. Dai, and K. H. Ahn*
Anal. Chem. 2019, 91, 14101–14108.

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Far-red/near-infrared emitting, two-photon absorbing, and bio-stable amino-Si-pyronin dyes

K. H. Kim, S. Singha,* Y. W. Jun, Y. J. Reo, H. R. Kim, H. G. Ryu, S. Bhuniab, and K. H. Ahn*
Chem. Sci.201910, 9028–9037.

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An Endeavor in the Reaction-Based Approach to Fluorescent Probes for Biorelevant Analytes: Challenges and Achievements

S. Singha, Y. W. Jun, S. Sarkar, and K. H. Ahn*
Acc. Chem. Res. 2019, 52, 2571–2581.

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Modified Isoindolediones as Bright Fluorescent Probes for Cell and Tissue Imaging

O. Vakuliuk, Y. W. Jun, K. Vygranenko, G. Clermont, Y. J. Reo, M. Blanchard-Desce,* K. H. Ahn*
and D. T. Gryko*
Chem. Eur. J. 201925, 13354–13362.

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Ratiometric fluorescence detection of Cu(II) with a keto-dipicolylamine ligand: A mechanistic implication

S. W. Cho, A. S. Rao, S. Bhunia, Y. J. Reo, S. Singha,* and K. H. Ahn*
Sens. Actuators B Chem. 2019279, 204–212.

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A Benzopyronin-Based Two-Photon Fluorescent Probe for Ratiometric Imaging of Lysosomal Bisulfite with Complete Spectral Separation

U. Tamima, M. Santra,* C. W. Song. Y. J. Reo, and K. H. Ahn *
Anal. Chem. 201991, 10779–10785.

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A rationally designed polarity-viscosity sensitive probe for imaging lipid droplets

C. W. Song, U. Tamima, Y. J. Reo, M. Dai, S. Sarkar, K. H. Ahn 
Dyes. Pigm. 2019171, 107718-107725.

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Molecular Probes for Fluorescent Imaging of ATP in Cell and Tissue

Y. W. Jun, S. Sarkar, K. H. Kim, and K. H, Ahn*
ChemPhotoChem. 20193, 214–219.

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A Ratiometric Two-Photon Fluorescent Probe for Tracking Lysosomal ATP: Direct In Cellulo Observation of Lysosomal Membrane Fusion Processes

Y. W. Jun, T. Wang, S. Hwang, D. Kim, D. Ma, K. H. Kim, S. Kim, J. Jung, and K. H, Ahn* 
Angew.Chem. Int. Ed. 2018, 57,10142–10147.

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A benzocoumarin based two-photon fluorescent probe for ratiometric detection of bisulfite

U. Tamima, S. Singha,* H. R. Kim, Y. J. Reo, Y. W. Jun, A. Das, and K. H. Ahn* 
Sens. Actuators B Chem. 2018277, 576–583.

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Two-photon absorbing 8-hydroxy-benzo[g]coumarins with giant Stokes shifts: An environment-insensitive dye platform for probing biomolecules

S. Sarkar, M. Santra, S. Singha, Y. W. Jun, Y. J. Reo, H. R. Kim, K. H. Ahn*
J Mater Chem B20186, 4446–4452.

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Dual probing of redox species, NAD(P)H and HOCl, with a benzo[a]phenoxazine-based far red-emitting dye

M. Santra,* S. Sarkar, Y. W. Jun, Y. J. Reo, ad K. H. Ahn* 
Tetrahedron Lett. 2018, 59, 3210–3213.

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Exploration of Molecular Shape-Dependent Luminescence Behavior: Fluorogenic Organic Nanoparticles Based on Bent Shaped Excited-State Intramolecular Proton-Transfer Dyes

M. Santra, Y. W. Jun, Y. J. Reo, S. Sarkar, W. Choi, J. E. Kwon, S. Y. Park, and K. H. Ahn* 
ACS Appl. Bio Mater. 20181,136–145.

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Bidirectional Solvatofluorochromism of a Pyrrolo[3,2-B]pyrrole–diketopyrrolopyrrole Hybrid

H. G. Ryu, M. F. Mayther, J. Tamayo, C. Azarias, E. M. Espinoza, M. Banasiewicz, Ł. G. Łukasiewicz, Y. M.Poronik, A. Jeżewski, J. Clark, J. B. Derr, K. H. Ahn,* D. T. Gryko,* D. Jacquemin,* and V. I. Vullev,* 
J Phys Chem C2018122, 13424–13434.

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Two-photon fluorescent probe for hydrogen sulfide based on a red-emitting benzocoumarin dye

H. G. Ryu, S. Singha,* Y. W. Jun, Y. J. Reo, and K. H. Ahn*
Tetrahedron Lett. 201859, 49–53

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Amino Acid Restriction Triggers Angiogenesis via GCN2/ATF4 Regulation of VEGF and H2S Production

A. Longchamp, T. Mirabella, A. Arduini, M. R. MacArthur, A. Das, J. H. Treviño-Villarreal, C. Hine, I. Ben-Sahra, N. H. Knudsen, L. E. Brace, J. Reynolds, P. Mejia, M. Tao, G. Sharma, R. Wang, J. M. Corpataux, J. A. Haefliger, K. H. Ahn, C. Lee, B. D. Manning, D. A. Sinclair, C. S. Chen, C. K. Ozaki, and J. R. Mitchell*
Cell2018173, 117–129.

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Addressing the Autofluorescence Issue in Deep Tissue Imaging by Two-Photon Microscopy: Significance of Far-Red Emitting Dyes

Y. W. Jun, H. R. Kim, Y. J. Reo, M. Dai, and K. H. Ahn
Chem. Sci. 20178, 7696–7704.

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Fluorescent Labeling of Protein Using Blue-Emitting 8-Amino-BODIPY Derivatives

D. Kim,* D. Ma, M. Kim, Y. Jung, N. H. Kim, C. Lee, S. W. Cho, S. Park, Y. Huh,  J. Jung, and K. H. Ahn*
J. Fluoresc.  201727, 2231–2238. 

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Cardioprotective effect of the sdf-1α/cxcr4 axis in ischemic postconditioning in isolated rat hearts

J. S. Kim, Y. Jang, J. H. Kim, Y. H. Park, S. A. Hwang, J. Kim, S. R. Lee, Z. Xu, C. Ban, K. H. Ahn, and K. J. Chun*
Korean. Circ. J. 201747, 949–9959.

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A Two-Photon Fluorescent Probe for Ratiometric Imaging of Endogenous Hypochlorous Acid in Live Cells and Tissues

Y. W. Jun, S. Sarkar, S. Singha,* Y. J. Reo, H. R. Kim, J. J. Kim, Y. T. Chang,* and K. H. Ahn* 
Chem. Commun. 201753, 10800–10803.

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Two-Photon In Vivo Imaging with Porous Silicon Nanoparticle

D. Kim, D. J. Kang, T. Wang, H. G. Ryu, J. M. Zuidema, J. Joo, M. Kim, Y. Huh, J. Jung, K. H. Ahn, K. H. Kim,* and M. J. Sailor*
Adv. Mater. 201729, 1703309.

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Fluorescent Labeling of Lysine Residues in Protein Using 8-Thiomethyl-BODIPY

D. Kim,* S. W. Cho, Y. W. Jun, and K. H. Ahn* 
B Korean Chem. Soc. 201738, 995–996.

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Hypothalamic-Pituitary Axis Regulates Hydrogen Sulfide Production

C. Hine, H.-J. Kim, Y. Zhu, E. Harputlugil, A. Longchamp, M. S. Matos, P. Ramadoss, K. Bauerle, L. Brace, J. M. Asara, C. K. Ozaki, S. Cheng, S. Singha, K. H. Ahn, A. Kimmelman, F. M. Fisher, P. Pissios, D. J. Withers, C. Selman, R. Wang, K. Yen, V. D. Longo, P. Cohen, A. Bartke, J. J. Kopchick, R. Miller, A. N. Hollenberg,* and J. R. Mitchell* 
Cell Metab. 2017 25, 1320–1333.

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Symmetry Breaking in Pyrrolo[3,2-B]Pyrroles: Synthesis, Solvatofluorochromism and Two-Photon Absorption

Ł. G. Łukasiewicz, H. G. Ryu, A. Mikhaylov, C. Azarias, M. Banasiewicz, B. Kozankiewicz,* K. H. Ahn,* D. Jacquemin,* A. Rebane,* and D. T. Gryko*
Chem. Asian J. 201712, 1736–1748. 

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A Sensitive Fluorescent Probe for the Polar Solvation Dynamics at Protein–Surfactant Interfaces

P. Singh, S. Choudhury, S. Singha, Y. Jun, S. Chakraborty, J. Sengupta, R. Das,* K. H. Ahn, and S. K. Pal*
Phys. Chem. Chem. Phys. 2017,  19, 12237–12245.

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Ratiometric Fluorescence Detection of Anthrax Biomarker with EuIII-EDTA Functionalized Mixed Poly(diacetylene) Liposomes

H. Seo, S. Singha, K. H. Ahn* 
Asian J. Org. Chem. 20176, 1257–1263.

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Ratiometric Imaging of Tissue by Two-Photon Microscopy: Observation of a High Level of Formaldehyde around Mouse Intestinal Crypts

S. Singha, Y. W. Jun, J. Bae, and K. H. Ahn* 
Anal. Chem. 201789, 3724–3731.

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Water-Soluble Pyrrolo[3,2-B]Pyrroles: Synthesis, Luminescence and Two-Photon Cellular Imaging Properties

M. Santra, Y. W. Jun, J. Bae, S. Sarkar, W. Choi, D. T. Gryko,* and K. H. Ahn* 
Asian J. Org. Chem. 20176, 278–281.

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Lavender Violet, Blue and Pink: A New Type of Benzo[ a ]Phenoxazine-Based Dipolar, Red-Emitting Dyes

M. Santra, Y. W. Jun, Y. J. Reo, S. Sarkar, and K. H. Ahn* 
Dyes Pigm. 2017, 142, 161–166.

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Fine-Tuning of CD8 + T Cell Mitochondrial Metabolism by the Respiratory Chain Repressor MCJ Dictates Protection to Influenza Virus

D. P. Champagne, K. M. Hatle, K. A. Fortner, A. D’Alessandro, T. M. Thornton, R. Yang, D.Torralba, J. Tomás-Cortázar, Y. W. Jun, K. H. Ahn, K. C. Hansen, L. Haynes, J. Anguita, and M. Rincon*
Immunity201644, 1299–1311.

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Detection of Ciprofloxacin in Urine through Sensitized Lanthanide Luminescence

S. Singha, and K. H. Ahn*
Sensors201616, 2065. 

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A Fluorescent Probe for Bisulfite Ions: Its Application to Two-Photon Tissue Imaging

H. Agarwalla, S. Pal, A. Paul, Y. W. Jun, J. Bae, K. H. Ahn,* D. N. Srivastava, and A. Das*
J. Mater. Chem. B, 20164, 7888–7894.

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A Dipolar Anthracene Dye: Synthesis, Optical Properties and Two-Photon Tissue Imaging

H. Moon, Y. W. Jun, D. Kim,* H. G. Ryu, T. Wang, K. H. Kim, Y. Huh, J. Jung, and K. H. Ahn*
Chem. Asian J. 201611, 2518–2523.

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Thermally Induced Silane Dehydrocoupling on Silicon Nanostructures

D. Kim, J. Joo, Y. Pan, A. Boarino, Y. W. Jun, K. H. Ahn, B. Arkles,* and M. J. Sailor*
Angew. Chem. Int. Ed. 201655, 6423–6427.

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Dipolar Dyes with a Pyrrolo[2,3-b]Quinoxaline Skeleton Containing a Cyano Group and a Bridged Tertiary Amino Group: Synthesis, Solvatofluorochromism, and Bioimaging

Ł. G. Łukasiewicz, I. Deperasińska, Y. M. Poronik,Y. W. Jun, M. Banasiewicz, B. Kozankiewicz,* K. H. Ahn,* and D. T. Gryko*
Chem. Asian J. 2016, 11, 1718–1724.

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Close Correlation of Monoamine Oxidase Activity with Progress of Alzheimer’s Disease in Mice, Observed by in Vivo Two-Photon Imaging

D. K. Kim, S. H. Baik, S. Kang, S. W. Cho, J. Bae, M.-Y. Cha, M. J. Sailor, I. Mook-Jung,* and K. H. Ahn*
ACS Cent. Sci. 2016, 2, 967–975.

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A Two-Photon Fluorescent Probe for Lysosomal Zinc Ions

H.-J. Lee, C.-W. Cho, H. Seo, S. Singha, Y. W. Jun, K.-H. Lee, Y. Jung, K.-T. Kim, S. Park, S. C. Bae,
and K. H. Ahn*
Chem. Commun. 2016, 52, 124–127.

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Shape-Selective, Stoichiometric Sensing of Fatty Acids with a Mixed Polydiacetylene Liposome

Y.-S. Cho, D. H. Ma, and K. H. Ahn*
J. Mater. Chem. C 2016, 4, 2871–2876. 

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Two-Photon Absorbing Dyes with Minimal Autofluorescence in Tissue Imaging: Application to in Vivo Imaging of Amyloid‑β Plaques with a Negligible Background Signal

D. Kim, H. Moon, S. H. Baik, S. Singha, Y. W. Jun, T. Wang, K. H. Kim,* B. S. Park, J. Jung, I. Mook-Jung, and K. H. Ahn*
J. Am. Chem. Soc. 2015, 137, 6781−6789.

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Preparation of Luminescent Lanthanide Polymers by Ring-Opening Metathesis Polymerization

M. S. Yoon, M. Santra, and K. H. Ahn*
Tetrahedron Lett. 2015, 56, 5573–5577.

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A structural remedy toward bright dipolar fluorophores in aqueous media

S. Singha, D.  Kim, B. Roy, S. Sambasivan, H. Moon, A. S. Rao, J. Y. Kim, T. Joo,* J. W. Park, Y. M. Rhee,* T. Wang, K. H. Kim,* Y. H. Shin, J. Jung,* and K. H. Ahn*
Chem. Sci. 20156, 4335–4342.

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Fluorescence Sensing Systems for Gold and Silver Species

S. Singha, D. Kim, H. Seo, S. W. Cho, and K. H. Ahn*
Chem. Soc. Rev. 2015, 44, 4367–4399.

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π-Expanded Coumarins: Synthesis, Optical Properties and Applications

M. Tasior, D. Kim, S. Singha, M. Krzeszewski, K. H. Ahn,* and D. T. Gryko*
J. Mater. Chem. C 2015, 3, 1421–1446.

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Ratiometric Fluorescence Detection of Cysteine and Homocysteine with a BODIPY Dye by Mimicking the Native Chemical Ligation

D. H. Ma, D. Kim, E. Seo, S.-J. Lee,* and K. H. Ahn*
Analyst 2015, 140, 422–427.

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An FITC-BODIPY FRET Couple: Application to Selective, Ratiometric Detection and Bioimaging of Cysteine

Ma, D. H.; Kim, D.; Akisawa, T.; Lee, K.-H.; Kim, K.-T.; Ahn, K. H. 
Chem. Asian J. 2015, 10, 894–902.

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Toward a Selective, Sensitive, Fast-Responsive, and Biocompatible Two-Photon Probe for Hydrogen Sulfide in Live Cells

S. Singha, D. Kim, H. Moon, T. Wang, K. H. Kim, Y. H. Shin, J. Jung, E. Seo, S.-J. Lee, and K. H. Ahn*
Anal. Chem. 2015, 87, 1188–1195.

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Synthesis of Benzocoumarins and Characterization of Their Photophysical Properties

D. Kim, Q. P. Xuan, H. Moon, Y. W. Jun, and K. H. Ahn*
Asian J. Org. Chem. 2014, 3 , 1089–1096.

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Molecular-Shape-Dependent Luminescent Behavior of Dye Aggregates: Bent versus Linear Benzocoumarins

H. Moon, Q. P. Xuan, D. Kim, Y. Kim, J. W. Park, C. H. Lee, H.-J. Kim, A. Kawamata, S. Y. Park,
and K. H. Ahn*
Cryst. Growth Des. 2014, 14, 6613–6619.

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Fluorescent Probes for Analysis and Imaging of Monoamine Oxidase Activity

D. Kim, Y. W. Jun, and K. H. Ahn*
B. Korean Chem. Soc. 2014, 35, 1269–1274. 

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Recent Development of Two-Photon Fluorescent Probes for Bioimaging

D. Kim, H. G. Ryu, and K. H. Ahn*
Org. Biomol. Chem. 2014, 12, 4550–4566.

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Ground-State Elevation Approach To Suppress Side Reactions in Gold-Sensing Systems Based on Alkyne Activation

H. Seo, M. E. Jun, K. Ranganathan, K.-H. Lee, K.-T. Kim, W. Lim, Y. M. Rhee, and K. H. Ahn*
Org. Lett. 2014, 16, 1374–1377. 

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Turn-On Fluorescence Detection of Apoptotic Cells Using a Zinc(II)-Dipicolylamine-Functionalized Poly(Diacetylene) Liposome

Y.-S. Cho, K. M. Kim, D. Lee, W. J. Kim,* and K. H. Ahn*
Chem. Asian J. 2013, 8, 755–759.

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A Novel Method Using an Acedan-Based Zn(DPA) Probe to Monitor ATP Localization in an in Vivo System

S. J. Lee, A. S. Rao, Y. H. Shin, H.-J. Chung, Y. Huh, K. H. Ahn, and J. Jung*
J Mol. Hist. 2012, 44, 241–247.

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Molecular Interactions between Charged Macromolecules: Colorimetric Detection and Quantification of Heparin with a Polydiacetylene Liposome

Y.-S. Cho, and K. H. Ahn*
J. Mater. Chem. B 2013, 1, 1182–1189.

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Two-Photon Probes Based on Arylsulfonyl Azides: Fluorescence Detection and Imaging of Biothiols

S. Singha, D. Kim, A. S. Rao, T. Wang, K. H. Kim, K.-H. Lee, K.-T. Kim, and K. H. Ahn*
Dyes Pigm. 2013, 99, 308–315.

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Studies on Acedan-Based Mononuclear Zinc Complexes toward Selective Fluorescent Probes for Pyrophosphate

A. S. Rao, S. Singha, W. Choi, and K. H. Ahn*
Org. Biomol. Chem. 2012, 10, 8410–8417.

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In Vivo Two-Photon Fluorescent Imaging of Fluoride with a Desilylation-Based Reactive Probe

D. Kim, S. Singha, T. Wang, E. Seo, J. H. Lee, S.-J. Lee,* K. H. Kim,* and K. H. Ahn* 
Chem. Commun. 2012, 48, 10243–10245.

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A Reaction-Based Sensing Scheme for Gold Species: Introduction of a (2-Ethynyl)Benzoate Reactive Moiety

H. Seo, M. E. Jun, O. A. Egorova, K.-H. Lee, K.-T. Kim, and K. H. Ahn*
Org. Lett. 2012, 14, 5062–5065.

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Synthesis of π-Extended Coumarins and Evaluation of Their Precursors as Reactive Fluorescent Probes for Mercury Ions

I. Kim, D. Kim, S. Sambasivan, and K. H. Ahn*
Asian J. Org. Chem. 2012, 1, 60–64.

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Reaction-Based Two-Photon Probes for in Vitro Analysis and Cellular Imaging of Monoamine Oxidase Activity

D. Kim, S. Sambasivan, H. Nam, K. H. Kim,*  J. Y. Kim, T. Joo,* K.-H. Lee, K.-T. Kim* and K. H. Ahn*
Chem. Commun. 2012, 48, 6833–6835.

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Dramatic Substituent Effects on the Photoluminescence of Boron Complexes of 2-(Benzothiazol-2-Yl)Phenols

M. Santra, H. Moon, M.-H. Park, T.-W. Lee,* Y. K. Kim, and K. H. Ahn*
Chem. Eur. J. 2012, 18, 9886–9893.

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A BODIPY-Based Reactive Probe for Ratiometric Fluorescence Sensing of Mercury Ions

D. Kim, K. Yamamoto, and K. H. Ahn*
Tetrahedron, 2012, 68, 5279–5282.

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A Turn-on Two-Photon Fluorescent Probe for ATP and ADP

A. S. Rao, D. Kim, H. Nam, H. Jo, K. H. Kim,* C. Ban,* and K. H. Ahn*
Chem. Commun. 2012, 48, 3206–3208.

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Reaction-Based Two-Photon Probes for Mercury Ions: Fluorescence Imaging with Dual Optical Windows

A. S. Rao, D. Kim, T. Wang, K. H. Kim,* S. Hwang, and K. H. Ahn*
Org. Lett. 2012, 14, 2598–2601.

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Stromal Cell Derived Factor-1 (SDF-1) Targeting Reperfusion Reduces Myocardial Infarction in Isolated Rat Hearts

Y.-H. Jang, J.-H. Kim,* C. Ban, K. H. Ahn, J.-H. Cheong, H.-H. Kim, J.-S. Kim, Y.-H. Park, J. Kim, K.-J. Chun, G.-H. Lee, M. Kim, C. Kim, and Z. Xu
Cardiovasc. Ther. 2011, 30, 264–272.

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Free Radical Polymerization Initiated and Controlled by Visible Light Photocatalysis at Ambient Temperature

G. Zhang, I. Y. Song, K. H. Ahn, T. Park,* and W. Choi*
Macromolecules 2011, 44, 7594–7599.

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Nanoparticle-Based Indicator-Displacement Assay for Pyrophosphate

D. J. Oh, K. M. Kim, and K. H. Ahn* 
Chem. Asian J. 2011, 6, 2034–2039.

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Competition Assay of Thymidine Phosphates with a (Zn2+-Cyclen)-Lumazine Ensemble

K.-M. Kim, D.-J. Oh, and K. H. Ahn*
B Korean Chem. Soc. 2011, 32, 3133–3136.

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A “Reactive” Ratiometric Fluorescent Probe for Mercury Species

M. Santra, B. Roy, and K. H. Ahn*
Org. Lett. 2011, 13, 3422–3425.

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Characterization of Vinylgold Intermediates: Gold-Mediated Cyclization of Acetylenic Amides

O. A. Egorova, H. Seo, Y. Kim, D. Moon, Y. M. Rhee, and K. H. Ahn*
Angew. Chem. Int. Ed. 2011, 50, 11446–11450.

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Zinc(II)-Dipicolylamine-Functionalized Polydiacetylene-Liposome Microarray: A Selective and Sensitive Sensing Platform for Pyrophosphate Ions

K. M. Kim, D. J. Oh, and K. H. Ahn*
Chem. Asian J. 2010, 6, 122–127.

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“Turn-on” Fluorescent Sensing with “Reactive” Probes

M. E. Jun, B. Roy, and K. H. Ahn*
Chem. Commun. 2011, 47, 7583–7601.

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Mononuclear Zn(Ii)- and Cu(Ii)-Complexes of a Hydroxynaphthalene-Derived Dipicolylamine: Fluorescent Sensing Behaviours toward Pyrophosphate Ions

B. Roy, A. S. Rao, and K. H. Ahn*
Org. Biomol. Chem. 2011, 9, 7774–7779.

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