Double-click synthesis of polysiloxane third-order nonlinear optical polymers with donor–acceptor chromophores
文献信息
发布日期
2020-04-03
DOI
10.1039/C9PY01771B
影响因子
5.582
作者
Zhitao Li, Dong Wang, Daniele Ramella, Hong Gao, Hui Cao, Yuzhen Zhao, Zongcheng Miao, Zhou Yang, Wanli He
查看原文
摘要
A series of novel polysiloxane compounds possessing third-order non-linear optical properties were synthesized using PMMS (poly[3-mercaptopropylmethylsiloxane]) as the main chain structure. The electron-rich alkyne side chain containing a dialkylamine substituent was grafted to the backbone via a thiol–ene click polymerization followed by a Sonogashira cross-coupling reaction. The donor–acceptor chromophores were inserted into the side chain of the polymer by a [2 + 2] click reaction allowing the molecule to have a broader absorption in the visible and near-infrared regions and a narrower optical band gap. After the click reaction, the polymer undergoes a transition from reverse saturation absorption to saturable absorption (RSA-SA). All polymers displayed good solubility and photophysical properties, and were thermally stable. Z-Scan experiments showed that all compounds possess unique non-linear optical properties.
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来源期刊
Polymer Chemistry
CiteScore:
8.6
自引率:
7.3%
年发文量:
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Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.
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