Citation: Dong, Zhen-Peng; Zhao, Jiao-Jiao; Liu, Peng-Yu; Liu, Zhi-Liang; Wang, Yan-Qin (2019). A metal--organic framework constructed by a viologen-derived ligand: photochromism and discernible detection of volatile amine vapors. New Journal of Chemistry, 43, pp. 9032-.