A bionic paired hydrogen-bond strategy for extending organic π-conjugation to regulate emission. Issue 29 (22nd July 2021)

• Record Type: Journal Article
• Authors: Ye, Guigui; Wang, Yigang; Hong, Liming; Yu, Fuqing; Xia, Guomin; Wang, Hongming
• Is Part Of: Journal of materials chemistry. Volume 9:Issue 29(2021)
• Page Start: 9142
• Page End: 9146
• Publication Date: 2021-07-22
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d1tc01792f
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : We demonstrate a bionic hydrogen-bond strategy to extend the π-conjugation of organic fluorophores, from the perspective of spectral and theoretical analyses. Abstract : Herein, we first demonstrate a non-covalent strategy that extends the π-conjugation of fluorophores through bionic paired hydrogen-bond interactions. In well-designed molecular models, 1, 8-naphtholactam (Np)-equipped molecules (TPE/HTPE-Np) exhibit highly efficient dual-state emission in a red-shifted region, whereas their acenaphthene (Ap)-equipped counterparts (TPE/HTPE-Ap) reserve typical AIE behaviors with short-wavelength emission. Single-crystal and theoretical analyses prove that these bionic hydrogen-bond interactions enable the facile formation of dimeric TPE/HTPE-Np, resulting in their larger delocalized π-electron conjugation, thereby playing a crucial role in their unique emission characteristics.