In Situ Incorporation of 2‐(2‐Hydroxyphenyl)benzothiazole within FAU Colloidal Crystals

Abstract

Inside knowledge: UV/Vis (absorption spectrum depicted) and Raman data reveal the stabilization of the trans-keto tautomer of 2-(2-hydroxyphenyl)benzothiazole (HBT) inside the nanosized FAU zeolite. The trans-keto tautomer exhibits highly intensive fluorescence in the zeolite, as compared to the cis-keto tautomer, which is formed in solution during the excited-state intramolecular proton-transfer (ESIPT) process.