Preparation and study of photoswitchable fluorescence nanoparticles based on spirobenzopyran |
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Authors: | Liang Ming Ling Yan Gu Qing Zhang Min Zhao Xue Yan Gang Liu |
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Affiliation: | [1]School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China [2]School of Pharmacy, Shanghai Jiaotong University, Shanghai 200240, China |
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Abstract: | The preparation and performance characterization of <50 nm spirobenzopyran-based photochromic nanocomposites with photoswitchable fluorescence are presented. The nanocomposites were fabricated by means of a modified miniemulsion polymerization process, in which the hydrophobic spirobenzopyran was covalently attached to the polymer chains and the matched fluorescent dyes were noncovalently embedded in the nanoscale cross-linked polymeric matrix, respectively. The obtained nanocomposites with a high relative fluorescence quantum yield (Q) exhibited superior fluorescent photoswitchable performance due to the effective photo-induced intermolecular energy transfer. The stability of photomerocyanine was also improved. |
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Keywords: | Photoswitchable fluorescence Spirobenzopyrans Miniemulsion polymerization Nanoparticles |
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