Fluorescent quantum yield of pyrene probe in ultrathin polymer films
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- 作者：Wan-chu Wei ; Shuo Feng ; Cai-xia Zheng ; Guo-dong Liang…
- 关键词：Pyrene ; labelled polystyrene ; Pyrene ; labelled poly(methyl methacrylate) ; Ultrathin polymer films ; Fluorescent quantum yield
- 刊名：Chinese Journal of Polymer Science
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：35
- 期：3
- 页码：400-406
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Polymer Sciences; Industrial Chemistry/Chemical Engineering; Characterization and Evaluation of Materials; Condensed Matter Physics;
- 出版者：Chinese Chemical Society and Institute of Chemistry, CAS
- ISSN：1439-6203
- 卷排序：35
文摘
The fluorescently labelled polymers including pyrene-labelled polystyrene (PyPS) and pyrene-labelled poly(methyl methacrylate) (PyPMMA) with narrow molecular weight distributions were synthesized by the atom transfer radical copolymerization (ATRCP) of styrene or methyl methacrylate with 1-pyrenemethyl methacrylate (PyMMA). The ultrathin PyPS and PyPMMA films with the thickness ranging from 30 nm to 400 nm supported on the quartz slides were prepared by spin-coating. The fluorescent quantum yield (QY) of the pyrene probe in the ultrathin polymer films was investigated by the photoluminescence spectrometer using an integrating sphere detector. The QY decreased with the reduction of film thickness in the sub-200 nm range.