Institute for Plasma Research, Bhat, Gandhinagar 382428, India.
Institute of Electronics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria.
Molecules. 2021 Mar 9;26(5):1475. doi: 10.3390/molecules26051475.
In this short review, we attempt to unfold various aspects of excited-state intramolecular proton transfer (ESIPT) from the studies that are available up to date. Since Weller's discovery of ESIPT in salicylic acid (SA) and its derivative methyl salicylate (MS), numerous studies have emerged on the topic and it has become an attractive field of research because of its manifold applications. Here, we discuss some critical aspects of ESIPT and tautomerization from the mechanistic viewpoint. We address excitation wavelength dependence, anti-Kasha ESIPT, fast and slow ESIPT, reversibility and irreversibility of ESIPT, hydrogen bonding and geometrical factors, excited-state double proton transfer (ESDPT), concerted and stepwise ESDPT.
在这篇简短的综述中，我们试图从迄今为止已有的研究中阐述激发态分子内质子转移（ESIPT）的各个方面。自从 Weller 在水杨酸（SA）及其衍生物甲基水杨酸酯（MS）中发现 ESIPT 以来，已经出现了许多关于该主题的研究，并且由于其多种应用，它已成为一个有吸引力的研究领域。在这里，我们从机理的角度讨论了 ESIPT 和互变异构的一些关键方面。我们讨论了激发波长依赖性、反 Kasha ESIPT、快速和缓慢 ESIPT、ESIPT 的可逆性和不可逆性、氢键和几何因素、激发态双质子转移（ESDPT）、协同和分步 ESDPT。
