New insight into mechanochromic property of one N, N′-disubstituted-dihydrodibenzo[a‚c]phenazine derivative. (March 2022)

• Record Type: Journal Article
• Authors: Zhao, Caixin; Chen, Kai; Yang, Weiwei; Zhang, Zhiyun; Qu, Da-Hui
• Is Part Of: Dyes and pigments. Volume 199(2022)
• Publication Date: 2022-03
• Subjects: Mechanochromic property -- VIE -- Hydrogen bonding; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2022.110096
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: We report herein the reversible mechanochromic luminescence property of (dibenzo[a, c]phenazine-9, 14-diylbis(4, 1-phenylene))dimethanol (DPAC-OH ) where the photoluminescene color changes from blue to blue-green upon grinding, which can be restored upon slow solvent evaporation. 9, 14-bis(4-(methoxymethyl)phenyl)-9, 14-dihydrodibenzo[a, c]phenazine (DPAC-OCH 3 ) is synthesized as the control sample to further demonstrate the role of hydrogen bonding in DPAC-OH . The vibration-induced emission (VIE ) mechanism and the presence of hydrogen bonding interactions are utilized to account for the mechanochromic phenomenon. Graphical abstract: Image 1 Highlights: The DPAC-OH exhibited reverible mechanochromic property. The DPAC-OH is the first to report mechanochromic property in VIE family. The VIE mechanism and H-bonding are adpoted to explain the property.