School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China.
Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China.
Angew Chem Int Ed Engl. 2022 Jul 25;61(30):e202204604. doi: 10.1002/anie.202204604. Epub 2022 Jun 21.
Nonradiative decay invariably competes with radiative decay during the deexcitation process of matter. In the community of luminescence research, nonradiative decay has been deemed less attractive than radiative decay. However, all things in their being are good for something and so is nonradiative decay. As the molecular motion-facilitated nonradiative decay (MMFND) effect is inevitable in photophysical processes, it provides a new avenue to convert the harvested light energy into exploitable forms by harnessing molecular motion. In many cases, active molecular motion enables thermal deactivation from excited states. In this Minireview, recent advances in photothermal and photoacoustic systems with MMFND character are summarized. We believe that this presentation of the rational engineering of molecular motion for efficient photothermal generation will deepen the understanding of the relationship between molecular motion and nonradiative decay and navigate people to rethink the positive aspects of nonradiative decay for the establishment of new light-controllable techniques.
在物质退激发过程中，非辐射衰减总是与辐射衰减竞争。在发光研究界，非辐射衰减不如辐射衰减有吸引力。然而，存在的一切都是有好处的，非辐射衰减也是如此。由于分子运动促进的非辐射衰减（MMFND）效应在光物理过程中不可避免，它为利用分子运动将收集到的光能转化为可利用的形式提供了新途径。在许多情况下，主动分子运动使从激发态进行热失活成为可能。在这篇综述中，总结了具有 MMFND 特性的光热和光声系统的最新进展。我们相信，这种对分子运动进行合理工程设计以实现高效光热产生的介绍，将加深对分子运动与非辐射衰减之间关系的理解，并引导人们重新思考非辐射衰减的积极方面，为建立新的光可控技术提供思路。
