Microwave assisted synthesis of a series of charge-transfer photosensitizers having quinoxaline-2(1H)-one as anchoring group onto TiO₂ surface

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• 作者：Mauricio Caicedo^a ; ^b ; Carlos A. Echeverry^a ; Robson R. Guimarã ; es^c ; Alejandro Ortiz^a ; ^b ; Koiti Araki^c ; ; Braulio Insuasty^a ; ^b ; ^{braulio.insuasty@correounivalle.edu.co}
• 关键词：Quinoxaline ; Electron-transfer ; Anchor group ; Knoevenagel reaction
• 刊名：Journal of Molecular Structure
• 出版年：2017
• 出版时间：5 April 2017
• 年：2017
• 卷：1133
• 期：Complete
• 页码：384-391
• 全文大小：1880 K
• 卷排序：1133

文摘

Efficient preparation of push-pull dyes having quinoxaline-2(1H)-one as anchoring group by microwave irradiation method. Ferrocene group acts as a quencher inhibiting photoinduced electron injection onto TiO2. The quinoxaline-2(1H)-one was linked to several electro-donor fragments through Knoevenagel reaction. Calculated electronic properties were consistent with the experimental data, confirming the feasibility of photoinduced electrons in TiO2. The efficiency of push-pull compounds depend on the molecular structure and the nature of the donor-groups.