A terpyridine based hydrogel system for reversible transmissive-to-dark electrochromism and bright-to-quenched electrofluorochromism

Sayan Halder; Susmita Roy; Mudit Dixit; Chanchal Chakraborty

doi:10.1039/d2cc02384a

A terpyridine based hydrogel system for reversible transmissive-to-dark electrochromism and bright-to-quenched electrofluorochromism

Chem Commun (Camb). 2022 Jul 26;58(60):8368-8371. doi: 10.1039/d2cc02384a.

Authors

Sayan Halder¹, Susmita Roy¹, Mudit Dixit^{1

2}, Chanchal Chakraborty^{1

2}

Affiliations

¹ Department of Chemistry, Birla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Samirpet, Hyderabad, Telangana 500078, India. chanchal@hyderabad.bits-pilani.ac.in.
² Materials Center for Sustainable Energy & Environment (McSEE), Birla Institute of Technology and Science, Hyderabad Campus, Hyderabad 500078, India.

PMID: 35792067
DOI: 10.1039/d2cc02384a

Abstract

A carboxylic acid-containing terpyridine-based hydrogelator (TPPCA) is synthesized to afford a self-assembly induced TPPCA hydrogel, which was used as an all-in-one electrochrome in electrochromic devices (ECDs) to demonstrate reversible transparent-to-black electrochromism with fast darkening and bleaching time of 8.3 s and 9.5 s, respectively, high photopic coloration efficiency of 65.8 cm² C^-1 and high optical memory. The ECD also revealed bluish-white to quenched emission simultaneously under the -3.5 V to 0 V voltage range.