Subtle Molecular Engineering around Flavin core for Stimuli-Responsive Solid-State Luminophore

Harsha Gopal Agrawal; Adamya Dubey; Dipayan Mondal; Ashutosh Kumar Mishra

doi:10.1002/asia.202401099

Subtle Molecular Engineering around Flavin core for Stimuli-Responsive Solid-State Luminophore

Chem Asian J. 2024 Dec 3:e202401099. doi: 10.1002/asia.202401099. Online ahead of print.

Authors

Harsha Gopal Agrawal¹, Adamya Dubey², Dipayan Mondal², Ashutosh Kumar Mishra³

Affiliations

¹ Indian Institute of Technology Hyderabad Department of Chemistry, chemistry, INDIA.
² Indian Institute of Technology Hyderabad, Chemistry, INDIA.
³ Indian Institute of Technology Hyderabad, Chemistry, IIT-Hyderabad, 502285, Hyderabad, INDIA.

PMID: 39626001
DOI: 10.1002/asia.202401099

Abstract

The present manuscript discusses the design, synthesis, and stimuli responsive solid-state properties of two novel flavin analogues, Phenyl Flavin (PhFl) and Pyridinyl Flavin (PyFl), featuring covalently linked phenyl and pyridinyl rings to isoalloxazine. Stimuli responsive properties of PhFl and PyFl were examined where, PyFl displayed more pronounced and reversible emissive behavior in the solid state on response to external stimuli. To elucidate the mechanism underlying the mode for switching behavior, single crystal- and powder-X-ray diffraction, as well as differential scanning calorimetry studies, were performed. Furthermore, a simple dip-in method was used to demonstrate its usage as ink free rewritable material.

Keywords: Stimuli, Flavin, thermal, Luminophore.