Nonradiative processes with the determined role in excited-state energy conversion, such as internal conversion (IC), vibrational relaxation (VR), intersystem crossing (ISC), and energy or electron transfer (ET or eT), have exerted a crucial effect on biological functions in nature. Inspired by these, nonradiative process manipulation has been extensively utilized to develop organic functional materials in the fields of energy and biomedicine. Therefore, comprehensive knowledge and effective manipulation of sophisticated nonradiative processes for achieving high-efficiency excited-state energy conversion are quintessential. So far, many strategies focused on molecular engineering have demonstrated tremendous potential in manipulating nonradiative processes to tailor excited-state energy conversion. Besides, molecular aggregation considerably affects nonradiative processes due to their ultrasensitivity, thus providing us with another essential approach to manipulating nonradiative processes, such as the famous aggregation-induced emission. However, the weak interactions established upon aggregation, namely, the aggregation microenvironment (AME), possess hierarchical, dynamic, and systemic characteristics and are extremely complicated to elucidate. Revealing the relationship between the AME and nonradiative process and employing it to customize excited-state energy conversion would greatly promote advanced materials in energy utilization, biomedicine, etc., but remain a huge challenge. Our group has devoted much effort to achieving this goal.

中文翻译：

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基于聚集微环境的非辐射过程操控以定制激发态能量转换

在激发态能量转换中具有确定作用的非辐射过程，例如内部转换（IC）、振动弛豫（VR）、系间窜越（ISC）以及能量或电子转移（ET或eT），对自然界中的生物功能。受这些启发，非辐射过程操纵已被广泛用于开发能源和生物医学领域的有机功能材料。因此，对复杂的非辐射过程的全面了解和有效操纵对于实现高效激发态能量转换至关重要。到目前为止，许多专注于分子工程的策略已经证明了在操纵非辐射过程以定制激发态能量转换方面的巨大潜力。此外，分子聚集由于其超敏感性而极大地影响非辐射过程，从而为我们提供了操纵非辐射过程的另一种重要方法，例如著名的聚集诱导发射。然而，聚集时建立的弱相互作用，即聚集微环境（AME），具有层次性、动态性和系统性的特征，并且极其复杂，难以阐明。揭示AME与非辐射过程之间的关系并利用其定制激发态能量转换将极大地促进能源利用、生物医学等领域的先进材料，但仍然是一个巨大的挑战。我们集团为实现这一目标付出了巨大的努力。