Extending the 2D conjugated microporous polymers linked by thiazolo[5, 4-d]thiazole for green light-driven selective aerobic oxidation of amines. Issue 28 (30th June 2022)

• Record Type: Journal Article
• Authors: Li, Xia; Zhang, Fulin; Wang, Yuexin; Xiong, Kanghui; Lang, Xianjun
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 28(2022)
• Page Start: 14965
• Page End: 14975
• Publication Date: 2022-06-30
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d2ta02603a
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : With pyrene as the donor, a conjugated microporous polymer linked by thiazolo[5, 4- d ]thiazole (TzTz) is with notable green light-driven performance in the selective aerobic oxidation of benzyl amines. Abstract : Conjugated microporous polymers (CMPs) have emerged as multifaceted photocatalysts whose properties can be precisely tuned at the molecular level. Herein, donor–π–acceptor (D–π–A) type CMPs linked by the electron-deficient thiazolo[5, 4- d ]thiazole (TzTz, i.e. the acceptor) were designed by extending the donor from benzene to pyrene to broaden the visible light activity. Subsequently, two-dimensional (2D) CMPs, TzTz–CMP–Be and TzTz–CMP–Py, were constructed via a solvothermal process. Notably, the more extended π-conjugation and planar pyrene bestow upon TzTz–CMP–Py with broader absorption of visible light and higher efficiency of charge transfer than TzTz–CMP–Be. Significantly, TzTz–CMP–Py outperformed TzTz–CMP–Be in the green light-driven selective aerobic oxidation of amines. Remarkable photocatalytic performance was observed in converting a wealth of primary and secondary amines to corresponding imines with molecular oxygen (O2 ) over TzTz–CMP–Py. This work suggests that CMPs can be rationally designed for extensive visible light-driven selective organic transformations.