Wen Yingyi, Wang Guan-E, Jiang Xiaoming, Ye Xiaoliang, Li Wenhua, Xu Gang
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS), 115 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. China.
University of Chinese Academy of Sciences (UCAS), 19A Yuquan Road, Beijing, 100049, P. R. China.
Angew Chem Int Ed Engl. 2021 Sep 1;60(36):19710-19714. doi: 10.1002/anie.202107185. Epub 2021 Aug 6.
Organic-inorganic hybrid superlattices (OIHSLs) hold attractive physical and chemical properties, while the construction of single-crystal covalent OIHSLs has not been achieved. Herein a coordination assembly strategy was proposed to create a single-crystal covalent OIHSL PbBDT (BDT=1,4-benzenedithiolate), where layered [PbS ] sublattice covalently connects with benzene sublattice. The covalent bonding offers better thermo-/chemi-stability, inter-sublattice electron transport, and unique organic-group-functionalized surface, which may enable better performances in chemical applications than non-covalent OIHSL. These features endow PbBDT with the highest sensitivity, the lowest detection limit and excellent selectivity towards NO at room temperature among all chemiresistive gas-sensing materials with reported response time less than 2 min without the need of light assistance.
有机-无机杂化超晶格（OIHSLs）具有吸引人的物理和化学性质，然而单晶共价OIHSLs的构建尚未实现。在此，提出了一种配位组装策略来制备单晶共价OIHSL PbBDT（BDT = 1,4-苯二硫醇盐），其中层状[PbS]亚晶格与苯亚晶格共价连接。共价键提供了更好的热/化学稳定性、亚晶格间电子传输以及独特的有机基团功能化表面，这可能使其在化学应用中比非共价OIHSL具有更好的性能。这些特性赋予PbBDT在所有化学电阻式气体传感材料中，在室温下对NO具有最高的灵敏度、最低的检测限和优异的选择性，且报道的响应时间小于2分钟，无需光辅助。
