Development of A Thermo-Responsive Conjugated Polymer with Photobleaching-Resistance Property and Tunable Photosensitizing Performance.,Macromolecular Rapid Communications

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Development of A Thermo-Responsive Conjugated Polymer with Photobleaching-Resistance Property and Tunable Photosensitizing Performance.
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2020-07-01 , DOI: 10.1002/marc.202000249
Qingling Xu _{1,

2} , Fengting Lv ₁ , Libing Liu ₁ , Shu Wang _{1,

2}

Affiliation

A thermo‐responsive conjugated polymer, PFBT‐gPA is synthesized by grafting the poly(N‐isopropylacrylamide) (PNIPAAm) to the side chains of a conjugated polyfluorene derivative through atom transfer radical polymerization (ATRP). PFBT‐gPA undergoes a reversible phase transition in water below and above the lower critical solution temperature (LCST) and the process is studied by differential scanning calorimetry (DSC) analysis and UV/vis absorption spectra. PFBT‐gPA shows a good photostability under UV light irradiation especially above the LCST. Moreover, the photosensitizing performance of PFBT‐gPA could be tuned simply by changing temperature. The unique properties of PFBT‐gPA promise its potential applications in sensing and photodynamic therapy.

中文翻译：

具有光漂白抗性和可调光敏性能的热敏共轭聚合物的开发。

一种热响应性共轭聚合物PFBT-gPA是通过原子转移自由基聚合（ATRP）将聚N-异丙基丙烯酰胺（PNIPAAm）接枝到共聚芴衍生物的侧链上而合成的。PFBT-gPA在低于和低于最低临界溶液温度（LCST）的水中经历可逆相变，并通过差示扫描量热法（DSC）分析和UV / vis吸收光谱研究了该过程。PFBT-gPA在紫外光照射下表现出良好的光稳定性，尤其是在LCST以上。此外，只需改变温度即可调节PFBT-gPA的光敏性能。PFBT-gPA的独特特性承诺其在传感和光动力疗法中的潜在应用。

更新日期：2020-08-06

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