【摘 要】
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Due to the strong π–π* stacking of conjugated segments,the emission of conjugated polymers is often quenched dramatically in an aggregated state.This dra
【机 构】
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School of Chemistry and Chemical Engineering,State Key Laboratory of Metal Matrix Composites,Shangha
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Due to the strong π–π* stacking of conjugated segments,the emission of conjugated polymers is often quenched dramatically in an aggregated state.This drawback greatly limits their application.To avoid the aggregation-caused quenching effect,a novel unimolecular micellization strategy has been developed for the emission enhancement of conjugated polymers.Different from the traditional linear block copolymers,the star copolymers with a dendritic conjugated core and many flexible arms can form the unimolecular micelles easily.Through a ''multi-micelle aggregates'' mechanism,the unimolecular micelles from star conjugated copolymers can self-assemble into large micelles without phase separation.Based on this concept,the emission enhancement of the conjugated polymers has been realized in an aggregate state.With the help of unimolecular micellization strategy,the conjugated nanoparticles with different functionalization are prepared through self-assembly,temperature variation and organic/inorganic hybrid approaches,which can be used to detect various bio-related processes,such as drug delivery and bacteria detection.
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