Modulation of singlet and triplet excited states through σ spacers in ternary 1,3,5-triazines

Zhongfu An; Qingyang Wu; Jianjian Xiao; Runfeng Chen; Jun Yin; Huifang Shi; Ye Tao; Yang Wang; Zhixiang Wang; Huanhuan Li; Hongmei Zhang; Xinhui Zhou; Yi Zhao; Wei Huang

doi:10.1039/C3RA41888J

Modulation of singlet and triplet excited states through σ spacers in ternary 1,3,5-triazines†

Zhongfu An,^a Qingyang Wu,^b Jianjian Xiao,^a Runfeng Chen,*^a Jun Yin,^a Huifang Shi,^a Ye Tao,^a Yang Wang,^a Zhixiang Wang,^a Huanhuan Li,^a Hongmei Zhang,^a Xinhui Zhou,^a Yi Zhao*^b and Wei Huang*^ac

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* Corresponding authors

^a Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing, P. R. China
E-mail: iamrfchen@njupt.edu.cn
Fax: +86 25 5813 9001
Tel: +86 25 5813 9988

^b State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, P. R. China

^c Jiangsu-Singapore Joint Research Centre for Organic/Bio-Electronics & Information Display and Institute of Advanced Materials (IAM), Nanjing University of Technology, Nanjing, P. R. China
E-mail: wei-huang@njupt.edu.cn

Abstract

A series of ternary asymmetric triazines with tunable singlet and triplet excited states were successfully synthesized on the basis of σ-spacer methodology and a facile synthetic route. The optoelectronic properties are dominated by the conjugated donor–acceptor (D–A) backbone of peripheral carbazoles (D) and triazine core (A), and can be further modulated via the partially interrupted conjugation between the core and the third substituents by the σ spacers of N–CH₃, NH, O, S and O [double bond, length as m-dash] SO, which offers new opportunities to fine tune the electronic structures and properties of triazines.

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Modulation of singlet and triplet excited states through σ spacers in ternary 1,3,5-triazines†

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Modulation of singlet and triplet excited states through σ spacers in ternary 1,3,5-triazines

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