Gao Wanru, Leng Meiying, Hu Zhixiang, Li Junze, Li Dehui, Liu Huan, Gao Liang, Niu Guangda, Tang Jiang
Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, Hubei, People's Republic of China.
Dalton Trans. 2020 May 7;49(17):5662-5668. doi: 10.1039/d0dt00514b. Epub 2020 Apr 14.
Organic-inorganic hybrids have drawn great attention for gas sensors due to their high sensitivity, good selectivity and acceptable stability at room temperature. There are two main approaches by which organic-inorganic hybrids convert gas information to electric or optical signals (vapochromism). Here, we have reported a new organic-inorganic hybrid PEAMnBr for humidity detection by luminescent visible chromism. PEAMnBr single crystals were grown by the solution method and determined by single-crystal X-ray diffraction. Luminescent humidity chromism was found on PEAMnBr from green emission at the water-desorption state to pink emission at the water-adsorption state within 18 s at a relative humidity of 38% RH. This obviously visible chromism was further used to check the water content in toluene with a low detection limit between 0.02 and 0.05 vol%.
有机-无机杂化材料因其高灵敏度、良好的选择性以及在室温下可接受的稳定性而在气体传感器领域备受关注。有机-无机杂化材料将气体信息转换为电信号或光信号（气相变色）主要有两种方式。在此，我们报道了一种用于湿度检测的新型有机-无机杂化材料PEAMnBr，它具有发光可见变色特性。通过溶液法生长了PEAMnBr单晶，并通过单晶X射线衍射进行了测定。在相对湿度为38%RH的条件下，18秒内可观察到PEAMnBr从脱水状态下的绿色发光到吸水状态下的粉色发光的发光湿度变色现象。这种明显的可见变色现象进一步用于检测甲苯中的水分含量，检测下限在0.02至0.05体积%之间。
