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KMID : 1059520070510060516
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Journal of the Korean Chemical Society
2007 Volume.51 No. 6 p.516 ~ p.519
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Water-Soluble Distyrylbenzene Fluorophore and Fluorescence Behavior in a Polymeric Vesicle
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Rati Ranjan Nayak
Woo Han-Young
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Abstract
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A vesicle forming polymer, poly(sodium acrylamidoundecanoate) (PSAU) and a water-soluble distyrylbenzene-based fluorophore, TPADSB-C were synthesized and characterized by using UV-vis and photoluminescence(PL) spectroscopy. An inter-chain vesicle formation of PSAU was observed at ~0.01 g/L from N-phenyl naphthylamine fluor escence measurement with changing PSAU concentration in water. Above critical aggregation concentration of PSAU, optical properties of TPADSB-C were investigated to study the microenvironment modulation through dye incorporation in the polymeric vesicle. The emission of TPADSB-C in the presence of PSAU vesicles was blue-shifted and the PL quantum efficiency was increased to 90% due to the microenvironment (e.g. polarity) change in aqueous solution.This study shows that the polymeric vesicle containing molecular fluorophores has a great potential as an efficient,stable and biocompatible labeling tag in biological cell imaging.
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KEYWORD
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Vesicle, Fluorescence, Water-soluble Chromophore, Distyrylbenzene, Microenvironment
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