Abstract A novel strategy to obtain side chain modified poly(oxindole biphenylylene) (POXI) by photoinduced copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) click reaction is described. In the first step, an alkyne-functionalized poly(oxindolebiphenylylene) (POXI-alkyne) is synthesized by superacid-catalyzed condensation of isatin with aromatic hydrocarbons. Subsequently, poly(ethylene glycol) methyl ether (Me-PEG), 1-pyrenemethanol (Py-OH) and 1,3-dibromopropane (DBP) are functionalized by azide groups via simple nucleophilic substitution reaction. Visible-light-induced CuAAC reaction between POXI-alkyne and the corresponding azide functionalized click components employing dibenzoyldiethylgermane (DBDEG) as photoactivator resulted in the formation of POXI-PEG, POXI-Py and insoluble network, respectively. Successful modification of POXI was confirmed by the spectral, (1H NMR, FT-IR, Fluorescence), chromatographic (GPC) and thermal (DSC) investigations.

中文翻译：

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光致CuAAC对乙炔官能聚（羟吲哚联苯）的后改性

摘要 描述了一种通过光诱导铜 (I) 催化叠氮化物-炔环加成 (CuAAC) 点击反应获得侧链改性聚（羟吲哚亚联苯）（POXI）的新策略。在第一步中，通过靛红与芳烃的超强酸催化缩合合成炔官能化的聚（oxindolebiphenylylene）（POXI-炔烃）。随后，聚（乙二醇）甲基醚（Me-PEG）、1-芘甲醇（Py-OH）和1,3-二溴丙烷（DBP）通过简单的亲核取代反应被叠氮基团官能化。可见光诱导的 POXI-炔烃与相应的叠氮化物功能化点击组分（采用二苯甲酰二乙基锗烷（DBDEG）作为光活化剂）之间的 CuAAC 反应分别导致 POXI-PEG、POXI-Py 和不溶性网络的形成。