Mechanochromic Luminescence Characteristics of Pyridine‐Terminated Chromophores in the Solid State and in a Poly(vinyl alcohol) Matrix. Issue 11 (5th September 2014)

• Record Type: Journal Article
• Authors: Kondo, Mizuho; Miura, Seiya; Okumoto, Kentaro; Hashimoto, Mayuko; Kawatsuki, Nobuhiro
• Is Part Of: Chemistry, an Asian journal. Volume 9:Issue 11(2014:Nov.)
• Page Start: 3188
• Page End: 3195
• Publication Date: 2014-09-05
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/asia.201402739
• Languages: English
• ISSNs: 1861-4728

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Mechanoresponsive luminophores containing different substituted pyridine rings at the molecular terminus are synthesized and their photoluminescence properties are investigated. The solid chromophore with a 4‐substituted pyridine ring exhibits a reversible photoluminescent color change, while the 2‐substituted chromophore shows only a small change in luminescence, and the 3‐substituted chromophore displays an irreversible photoluminescent color change with mechanical grinding. A change of the sample color in response to mechanical grinding is also achieved for a dye‐dispersed poly(vinyl alcohol) film. Furthermore, a simultaneous acid and mechanoresponsive photoemission color change is achieved in the dye‐dispersed film.</p> </abstract>