Journal
JOURNAL OF MATERIALS CHEMISTRY B
Volume 2, Issue 26, Pages 4159-4166Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4tb00190g
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Funding
- National Basic Research Program of China (973 Program) [2013CB834803]
- National Science Foundation for Distinguished Young Scholars of China [20825102]
- National Natural Science Foundation of China [91222202, 21171114]
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We report 3-(4,5-diphenyl-1H-imidazol-2-yl) naphthalen-2-ol (DPIN) as an interesting luminescent material displaying ESIPT with a large Stokes shift of similar to 180 nm even in protic/polar solvents. Stable homo-dispersed nanoparticles formed by inter-and intramolecular H-bonds in aqueous media and the corresponding aggregation induced enhanced emission with a high quantum yield up to 0.45 were observed. Factors such as pH value and ions (cations and anions) showed a negligible effect on the fluorescence performance. A probe of 3-(4,5-diphenyl-1H-imidazol-2-yl)naphthalen-2-yl-acrylate (DPIN-A) based on this molecule was designed. The results revealed that it can be used for sensing of Cys with high selectivity and sensitivity.
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