Photo-modulated wide-spectrum chromism in Eu³⁺ and Eu³⁺/Tb³⁺ photochromic coordination polymer gels: application in decoding secret information.

ABSTRACT: Photo-switching emission of photochromic materials has paramount importance in the field of optoelectronics. Here, we report synthesis and characterization of a dithienylethene (DTE) based photochromic low molecular weight gelator (LMWG) and self-assembly with lanthanide (Eu³⁺ and Tb³⁺) ions to form a photochromic coordination polymer gel (pcCPG). Based on DTE ring opening and closing, the TPY-DTE gel shuttles from pale-yellow coloured TPY-DTE-O to dark blue coloured TPY-DTE-C and vice versa upon irradiating with UV and visible light, respectively, and both the photoisomers show distinct optical properties. Furthermore, integration of Eu³⁺ and Tb³⁺ lanthanides with TPY-DTE resulted in red and green emissive Eu-pcCPG (Q.Y. = 18.7% for the o

SUBMITTER: Verma P 

PROVIDER: S-EPMC8179347 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature