Two 3D Cd(II) Metal–Organic Frameworks Linked by Benzothiadiazole Dicarboxylates: Fantastic S@Cd<sub>6</sub> Cage, Benzothiadiazole Antidimmer, and Dual Emission
作者:Qing Cheng、Xiao Han、Yue Tong、Chao Huang、Jie Ding、Hongwei Hou
DOI:10.1021/acs.inorgchem.6b02863
日期:2017.2.6
realized by the structural analysis and photophysical study. Interestingly, although there is slight difference in structure (regular octahedral cage in 1 and slightly distorted octahedral cage in 2), the changes in N2 adsorption capability and photophysical performance between 1 and 2 are obvious, where 2 shows smaller Brunauer–Emmett–Teller surface area, broader absorption of antidimmer, and longer dual-emission
在相同的苯并噻二唑(BTD)配体2,1,3-苯并噻二唑-4,7-二羧酸(H 2 L)的基础上,三维(3D)BTD衍生的Cd(II)金属的两个新异构体-有机框架1 - 2 - [[电子邮件保护] 6大号6 ]· X ^ h 2 ö} ñ由不同溶剂热反应,这在结构上相似获得。出乎意料的是,结构分析表明,在1或2中,一个强大的分子间相互作用在Cd(II)簇笼中固定了一个游离硫原子,从而形成了二级建筑单元(SBU)[电子邮件保护] 6。每个SBU(受电子邮件保护)6通过六个L 2–配体连接,并进一步扩展到3D多孔框架中。在这项工作中,通过结构分析和光物理研究证明了BTD抗二聚体。此外,1或2显示出罕见的双重发射,而在配体H 2 L的溶液中仅观察到一个发射。通过结构分析和光物理研究也实现了双发射机理。有趣的是,尽管结构略有不同(规则的八面体笼为1个,扭曲的八面体笼为2个),但N 2的变化吸附能力和