Abstract：
Conjugated polymers (CPs)-based near-infrared phototheranostics are receiving increasing attention due to their high molar extinction coefficient, wide emission wavelength, easy preparation and excellent biocompatibility. Herein, several new conjugated polymers with D2-D1-A structures were easily prepared through one-pot coupling using triphenylamine (D2) as well as thiophenes (D1) as electron donors and benzothiadiazole (A) as electron acceptors. Interesting, their optical performance and power conversion efficiency could be tuned by side chains on thiophenes (D1). The introduction of ethylenedioxy into D1 as side chain significantly improves fluorescence imaging brightness, photothermal conversion efficiency and hydrophilicity, and extends emission wavelength, which are beneficial for phototheranostic. The side chain modification provides new opportunity to design efficient phototheranostics without construction new fluorescent skeletons.
摘要：
基于共轭聚合物(CPs)的近红外光学由于其高摩尔消光系数而受到越来越多的关注,宽发射波长，易于制备和优异的生物相容性。在这里，使用三苯胺（D2）和噻吩（D1）作为电子给体，苯并噻二唑（A）作为电子受体，通过一锅法偶联很容易制备出几种具有D2-D1-A结构的新型共轭聚合物。有趣,它们的光学性能和功率转换效率可以通过噻吩(D1)上的侧链来调节。将乙二氧基作为侧链引入D1显著提高了荧光成像亮度，光热转换效率和亲水性，并扩展发射波长，这对光疗是有益的。侧链修饰提供了新的机会来设计有效的光疗学，而无需构建新的荧光骨架。
