Near-IR Light-Induced Electron Transfer via Dynamic Quenching
Near-IR Light-Induced Electron Transfer via Dynamic Quenching
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通过动态淬火的近红外光诱导电子转移
DOI：
10.1021/acs.jpcc.8b02591
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Masaoka Shigeyuki
中科院分区：
文献类型：
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作者：
Enomoto Takafumi;Kondo Mio;Asada Mizue;Nakamura Toshikazu;Masaoka Shigeyuki
近红外光的利用是太阳能高效利用的重要目标。在这里，我们描述了一类新的近红外光诱导的电子转移系统使用扭曲的酞菁作为光敏剂。通过对畸变酞菁的适当修饰，得到了一种具有高光稳定性和长激发寿命的近红外光吸收染料，并成功地建立了近红外光诱导的电子转移体系。机理研究表明，电子转移系统通过动态猝灭机制工作。该系统在近红外光照射（>750 nm）时产生染料的长寿命阴离子自由基物质。
The utilization of near-infrared light is an important objective for the high-efficiency utilization of solar energy. Here, we describe a new class of a near-infrared light-induced electron transfer system using a distorted phthalocyanine as a photosensitizer. We revealed that the appropriate modification of distorted phthalocyanine affords a near-infrared absorbing dye with high photostability and long excitation lifetime, and a near-infrared light-induced electron transfer system was successfully established using the dye. The mechanistic investigation clarified that the electron transfer system works via a dynamic quenching mechanism. The system generated a long-lived anion radical species of the dye upon near-infrared light irradiation (>750 nm).