Tracking the Superefficient Anion Exchange of a Dynamic Porous Material Constructed by Ag(I) Nitrate and Tripyridyltriazole via Multistep Single-Crystal to Single-Crystal Transformations.
To avoid the instability and inefficiency for anion-exchange resins and layered double-hydroxides materials, we present herein a flexible coordination network [Ag(L243)](NO3)(H2O)(CH3CN) (L243= 3-(2-pyridyl)-4-(4-pyridyl)-5-(3-pyridyl)-1,2,4-triazole) with superefficient trapping capacity for permanganate, as a group-7 oxoanion model for radiotoxic pertechnetate pollutant. Furthermore, a high-throughput screening strategy has been developed based on concentration-gradient design principle to ascertain the process and mechanism for anion exchange. Significantly, a series of intermediates can be successfully isolated as the qualified crystals for single-crystal X-ray diffraction. The result evidently indicates that such a dynamic material will show remarkable breathing effect of the three-dimensional host framework upon anion exchange, which mostly facilitates the anion trapping process. This established methodology will provide a general strategy to discover the internal secrets of complicated solid-state reactions in crystals at the molecular level.
College of Chemistry, Tianjin Normal University , Tianjin 300387, P.R. China.
Cheng-Peng
CP
Li
College of Chemistry, Tianjin Normal University , Tianjin 300387, P.R. China.
Bo-Lan
BL
Liu
College of Chemistry, Tianjin Normal University , Tianjin 300387, P.R. China.
Lei
L
Wang
College of Chemistry, Tianjin Normal University , Tianjin 300387, P.R. China.
Yue
Y
Liu
Henan Provincial Key Laboratory of Surface & Interface Science, Zhengzhou University of Light Industry , Zhengzhou 450002, P.R. China.
Jia-Yue
JY
Tian
Henan Provincial Key Laboratory of Surface & Interface Science, Zhengzhou University of Light Industry , Zhengzhou 450002, P.R. China.
Chun-Sen
CS
Liu
College of Chemistry, Tianjin Normal University , Tianjin 300387, P.R. China.|Henan Provincial Key Laboratory of Surface & Interface Science, Zhengzhou University of Light Industry , Zhengzhou 450002, P.R. China.
Miao
http://orcid.org/0000-0002-1029-1820
M
Du
anion exchange; capture mechanism; crystal transformation; dynamic porous material; high-throughput screening