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Issue 3, 2013
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One-pot fabrication of amphiphilic photoswitchable thiophene-based fluorescent polymer dots

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Abstract

Novel amphiphilic photoswitchable thiophene-based fluorescent polymer dots (Pdots) were fabricated by coprecipitating a soluble and highly fluorescent polythiophene precursor with another photochromic spiropyran-linked amphiphilic copolymer into water under continuous ultrasound. The designed spiropyran-linked amphiphilic copolymer not only provided the fluorescent Pdots with unprecedented long-term photostability (>30 days) in aqueous media, but also allowed the reversible modulation of the fluorescence emission of the thiophene-based polymer via alternating irradiation with UV and visible light. These fluorescent Pdots not only show a uniform small particle size (ca. 16 nm in diameter), excellent long-term stability and high brightness of single particles, but also reveal distinct dual-color fluorescence, fast photo-responsiveness, as well as favorable photoreversibility with a fatigue resistance over at least 10 cycles of photoconversion.

Graphical abstract: One-pot fabrication of amphiphilic photoswitchable thiophene-based fluorescent polymer dots

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Supplementary files

Article information


Submitted
01 Aug 2012
Accepted
08 Oct 2012
First published
08 Oct 2012

Polym. Chem., 2013,4, 773-781
Article type
Paper

One-pot fabrication of amphiphilic photoswitchable thiophene-based fluorescent polymer dots

J. Chen, D. Wang, A. Turshatov, R. Muñoz-Espí, U. Ziener, K. Koynov and K. Landfester, Polym. Chem., 2013, 4, 773
DOI: 10.1039/C2PY20589K

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