A novel strategy for enhancing NO2 sensitivity of new 1D organic-inorganic metal halide hybrids

Organic-inorganic metal halide hybrids show great potential for applications in catalysis, solar cells, gas sensing, etc. Due to the highly designable structure, a novel strategy could be developed to improve their gas sensitivity in gas detection. Two new organic-inorganic metal halide hybrids have been synthesized using [(Et)2MP]+ (MP = p-mercaptopyridine, Et = ethyl) as the cationic template. The 1-dimensional inorganic chain provides good electron transport channels, and the electronic structure can be easily adjusted by changing the halogen to enhance the sensitivity of gas sensing. The difference in response values for NO2 can reach 27 times before and after the halogen change. This work provides insight into the design of gas-sensing materials with improved properties.