Adv. Mater. Engineering and Modelling Group, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370, Wroclaw, Poland.
Insitut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), UMR CNRS 7515, Universite de Strasbourg, 25 Rue Becquerel, 67087, Strasbourg, France.
Chemistry. 2022 Aug 4;28(44):e202201327. doi: 10.1002/chem.202201327. Epub 2022 Jun 15.
The excited-state intramolecular proton transfer chromophores were regarded as good materials for laser action generation due to their inherent four-level photocycle. The excitation-dependent properties of these compounds enable light amplification from two distinct forms: both enol and keto, making it possible to obtain dual fluorescence emission. Herein, we report that a third option is possible for the first time stimulated emission was realized with a deprotonated ESIPT molecule based on a novel rigidified 2-(2'-hydroxyphenyl)benzothiazole derivative, triggering the possibility to fabricate real-time tunable active material. Through the rational engineering of the ratio of each emissive species, a red-green-blue device was fabricated with the possibility of white light generation. The degenerated two-wave mixing setup was applied to construct a continuously tunable distributed feedback laser.
激发态分子内质子转移发色团由于其固有的四能级光循环，被认为是激光作用产生的良好材料。这些化合物的激发依赖性特性使两种不同形式的光放大成为可能：烯醇和酮，从而实现双荧光发射。在这里，我们首次报道了第三种可能，即基于新型刚性 2-(2'-羟基苯基)苯并噻唑衍生物的去质子化 ESIPT 分子实现了受激发射，从而有可能制造实时可调谐的活性材料。通过合理设计每种发光物质的比例，制造了一种具有产生白光可能性的红绿蓝器件。退化的双波混合装置被应用于构建连续可调谐的分布式反馈激光器。
