二维sp^(2)碳共价有机框架及高效光催化制氢

本文设计合成了两种具有不同连接方式(亚胺键和sp^(2)-C-CN键)的三嗪基共价有机框架(COFs)材料.连接单元的微小变化导致可见光驱动制氢性能的巨大差异.具有sp^(2)碳连接方式的全π共轭二维COFs在450 nm波长处表现出13.48%的外量子效率,优于已报道的COFs光催化剂.而亚胺键的二维COFs几乎没有光活性.借助光电化学研究和量子化学计算进一步研究了二维COFs的催化机理,为太阳能转化高性能有机光催化剂的制备提供了新的见解.

Erratum to“Single-crystal structure of two-dimensional organic framework based on donor-acceptor interactions with chargetransfer effect”[Sci.China Chem.,2021,64:1510–1514]

Erratum to:Sci China Chem,2021,64:1510-1514,doi:10.1007/s11426-021-1030-7 Due to the error during the production process,the Figure 3 was missing in the above referenced publication[1].The corrected Figure 3 is as follows.The online version of the original article can be found at doi:10.1007/s11426-021-1030-7.

Single-crystal structure of two-dimensional organic framework based on donor-acceptor interactions with charge-transfer effect

Two charge-transfer single crystals induced by donor-acceptor interactions were obtained.The presence of different solvent molecules led to 1D(linear)or 2D self-assembly modes.More interestingly,the 2 D organic framework,a layer-by-layer 2D organic framework single crystal,showed a stronger charge-transfer effect than the 1D cocrystal.