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).

中文翻译：

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通过动态猝灭进行近红外光诱导的电子转移

利用近红外光是高效利用太阳能的重要目标。在这里，我们描述了一种新的近红外光致电子转移系统，该系统使用扭曲的酞菁作为光敏剂。我们发现扭曲的酞菁的适当修饰提供了具有高光稳定性和长激发寿命的近红外吸收染料，并且使用该染料成功建立了近红外光诱导的电子转移系统。机理研究表明，电子传输系统通过动态淬灭机制起作用。该系统在近红外光照射（> 750 nm）时产生了染料的长寿命阴离子自由基物种。