Zhang Chuanqi, Shi Huaizhong, Zhang Chenghui, Yan Yan, Liang Zhiqiang, Li Jiyang
State Key Lab of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China.
Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
Molecules. 2021 Oct 14;26(20):6209. doi: 10.3390/molecules26206209.
A supramolecular network [Hbdcbpy(NO)·HO] (Hbdcbpy = 1,1'-Bis(3,5-dicarboxybenzyl)-4,4'-bipyridinium) () was prepared by a zwitterionic viologen carboxylate ligand in hydrothermal synthesis conditions. The as-synthesized () has been well characterized by means of single-crystal/powder X-ray diffraction, elemental analysis, thermogravimetric analysis and infrared and UV-vis spectroscopy. This compound possesses a three-dimensional supramolecular structure, formed by the hydrogen bond and π-π interaction between the organic ligands. This compound shows photochromic properties under UV light, as well as vapochromic behavior upon exposure to volatile amines and ammonia, in which the electron transfer from electron-rich parts to the electron-deficient viologen unit gives rise to colored radicals. Moreover, the intensive intermolecular H-bonding networks in endows it with a proton conductivity of 1.06 × 10 S cm in water at 90 °C.
通过两性离子紫精羧酸盐配体在水热合成条件下制备了一种超分子网络[Hbdcbpy(NO)·H₂O]（Hbdcbpy = 1,1'-双(3,5-二羧基苄基)-4,4'-联吡啶鎓）（）。通过单晶/粉末X射线衍射、元素分析、热重分析以及红外和紫外-可见光谱对合成的（）进行了充分表征。该化合物具有三维超分子结构，由有机配体之间的氢键和π-π相互作用形成。该化合物在紫外光下表现出光致变色性质，以及在暴露于挥发性胺和氨时表现出气致变色行为，其中从富电子部分到缺电子紫精单元的电子转移产生了有色自由基。此外，中的密集分子间氢键网络使其在90℃的水中具有1.06×10⁻⁶ S cm⁻¹的质子传导率。
