Conjugated Polymer-Based Hybrid Materials for Turn-On Detection of CO2 in Plant Photosynthesis

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• 作者：Hongbo Yuan ; Yibing Fan ; Chengfen Xing ; Ruimin Niu ; Ran Chai ; Yong Zhan ; Junjie Qi ; Hailong An ; Jialiang Xu
• 刊名：Analytical Chemistry
• 出版年：2016
• 出版时间：June 21, 2016
• 年：2016
• 卷：88
• 期：12
• 页码：6593-6597
• 全文大小：363K
• 年卷期：0
• ISSN：1520-6882

文摘

Detection of carbon dioxide (CO₂) is of fundamental importance in diverse applications ranging from environmental analysis to agricultural production. In this work, a hybrid probe based on guanidinium-pendent oligofluorene (G-OF) and water-soluble conjugated polythiophene (PTP) has been developed for the turn on detection of CO₂ with low background signal, taking advantage of the efficient fluorescence quenching of the tight aggregate of G-OF/PTP. In the presence of CO₂, the electrostatic repulsion between G-OF and PTP can be effectively enhanced through protonation of the side chains, leading to the disaggregation and thus the “turn-on” fluorescence. The strategy allows for the light-up visible detection of CO₂ with high sensitivity. Importantly, this system is capable of sensitively monitoring the concentration changes of CO₂ in the process of the photosynthesis, which represents a concept to monitor the photosynthesis based on water-soluble conjugated polymers.