Solvent-Induced Assembly of Sliver Coordination Polymers (CPs) as Cooperative Catalysts for Synthesizing of Cyclopentenone[b]pyrroles Frameworks
作者:Chao Huang、Xiao Han、ZhiChao Shao、Kuan Gao、Mengjia Liu、Yanjie Wang、Jie Wu、Hongwei Hou、Liwei Mi
DOI:10.1021/acs.inorgchem.6b03091
日期:2017.5
catalysis for tandemacylation–Nazarovcyclization reaction has been evidenced by the significantly transformed connection modes of Ag–Ag interactions in 1–3. As a result, the unique structural characteristics of 2, especially containing the Ag–Ag–Ag bonds, endow 2 with intact multinuclear reaction pathways and well-defined multinuclear platforms that can execute tandemacylation–Nazarovcyclization reaction
A Chromo-Fluorogenic Tetrazole-Based CoBr2 Coordination Polymer Gel as a Highly Sensitive and Selective Chemosensor for Volatile Gases Containing Chloride
作者:Hyejin Lee、Sung Ho Jung、Won Seok Han、Jong Hun Moon、Sunwoo Kang、Jin Yong Lee、Jong Hwa Jung、Seiji Shinkai
DOI:10.1002/chem.201003279
日期:2011.3.1
Catching chloride: A tetrazole‐based ligand without long alkyl chains is used to form a coordinationpolymergel with CoBr2 (1). Gel 1 has a spherical structure with a 20–30 nm diameter. More interestingly, gel 1 selectively recognizes toxic gases, such as HCl, SOCl2, (COCl)2, and COCl2 that containchloride atoms.
A tetrazole-based ligand forms a supramolecular gel in the presence of transition metal ions, particularly Zn2+, Cu2+ and Co2+. The gels have been characterized by SEM, TEM, fluorescence spectroscopy, rheometry and fluorescence microscopy. The polymer exhibits a strong fluorescence enhancement upon gel formation. According to DFT calculations, one of Zn2+ is bound to 4 tetrazole moieties and 2 solvent molecules by octahedral structure. The Zn2+-induced gelation does not strongly depend on anions. The Zn2+-tetrazole ligand gel shows a spherical structure with 20–50 nm diameter. The rheological properties of the Zn2+-tetrazole ligand gel were strongly dependent on the concentration of Zn2+.