Renaissance of Organic Triboluminescent Materials

Mukherjee, Sanjoy and Thilagar, Pakkirisamy (2019) Renaissance of Organic Triboluminescent Materials. In: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 58 (24). pp. 7922-7932.

PDF ang_che_int_edi_58-24_7922_2019.pdf - Published Version Restricted to Registered users only Download (8MB) | Request a copy

Abstract

Solid-state luminescence of organic dyes is an elusive frontier, and understanding and designing solid-state stimuli-responsive materials is not trivial. ``Mechanoluminescence'' (ML) or ``triboluminescence'' (TL), which is associated with fracture or force-initiated luminescence from a material, is currently attracting new interest. Fracturing the surfaces of organic crystals ordered in noncentrosymmetric space groups can electronically excite the surface and neighboring molecules through piezo- or pyroelectric effects, and this can result in luminescence when the molecules relax back to their ground states. The combined duration of these two consecutive phenomena leads to force-generated luminescence or TL. Although TL has been known for a very long time, examples of TL-active materials are scarce, but are increasing as synthetic and characterization procedures develop. The question is now whether the relatively rare phenomenon of TL needs to be reevaluated to obtain a broader understanding of the subject.

Item Type:	Journal Article
Publication:	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Publisher:	WILEY-V C H VERLAG GMBH
Additional Information:	Copyright of this article belongs to WILEY-V C H VERLAG GMBH
Keywords:	crystal structure; fluorescence; phosphorescence; solid-state emission; triboluminescence
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	03 Dec 2019 09:55
Last Modified:	03 Dec 2019 09:55
URI:	http://eprints.iisc.ac.in/id/eprint/63325

Actions (login required)

View Item