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A Covalent Organic-Inorganic Hybrid Superlattice Covered with Organic Functional Groups for Highly Sensitive and Selective Gas Sensing.

Yingyi WenGuan-E WangXiaoming JiangXiaoliang YeWenhua LiGang Xu
Published in: Angewandte Chemie (International ed. in English) (2021)
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 [PbS2 ] 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 NO2 at room temperature among all chemiresistive gas-sensing materials with reported response time less than 2 min without the need of light assistance.
Keyphrases
  • room temperature
  • water soluble
  • ionic liquid
  • mental health
  • physical activity
  • quantum dots
  • mass spectrometry
  • high resolution
  • solid state