Amplified Spontaneous Emission from Zwitterionic Excited-State Intramolecular Proton Transfer

Autor:	Atul Shukla, Van Thi Ngoc Mai, Velayudhan V. Divya, Cherumuttathu H. Suresh, Megha Paul, Venugopal Karunakaran, Sarah Katariina Martikainen McGregor, Ilene Allison, K. N. Narayanan Unni, Ayyappanpillai Ajayaghosh, Ebinazar B. Namdas, Shih-Chun Lo
Rok vydání:	2022
Předmět:	Fluorenes Colloid and Surface Chemistry General Chemistry Protons Biochemistry Catalysis
Zdroj:	Journal of the American Chemical Society. 144:13499-13510
ISSN:	1520-5126 0002-7863
DOI:	10.1021/jacs.2c02163
Popis:	The unique four-level photocycle characteristics of excited-state intramolecular proton transfer (ESIPT) materials enable population inversion and large spectral separation between absorption and emission through their respective enol and keto forms. This leads to minimal or no self-absorption losses, a favorable feature in acting as an optical gain medium. While conventional ESIPT materials with an enol-keto tautomerism process are widely known, zwitterionic ESIPT materials, particularly those with high photoluminescence, are scarce. Facilitated by the synthesis and characterization of a new family of 2-hydroxyphenyl benzothiazole (HBT) with fluorene substituents
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28f2af0681e64f56465fe61a6df881b3 https://doi.org/10.1021/jacs.2c02163 Zobrazit plný text záznamu