Premium
New organic‐pillared zincophosphate and interpenetrating‐layered zinc coordination polymer: Crystal growth on tarbuttite‐like sheets with surface‐active carboxylic acid groups
Author(s) -
Hung LingI,
Yi HsiangYi,
Shih YuChieh,
Chen PeiLin,
Wang SueLein
Publication year - 2019
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201900166
Subject(s) - chemistry , zinc , carboxylic acid , wetting , crystal structure , amine gas treating , polymer , reactivity (psychology) , crystallography , polymer chemistry , chemical engineering , organic chemistry , medicine , alternative medicine , pathology , engineering
For the first time, crystal growth of two novel distinct structures is observed to emerge from parent tarbuttite‐like zincophosphate sheets, which feature uncoordinated carboxylic acid (─COOH) groups protruding on the surface. A prior study revealed that the ─COOH groups could be modified through mechanochemical reaction to alter the wettability of bulk solid. In this study, the modification of ─COOH groups via amidation in solutions was conducted to tune the wettability to more hydrophobic. A further study in the reactivity of the zincophosphate toward various organic amines resulted in crystal growth of two novel compounds, thereby, a 2D coordination polymer with parallel interpenetrating square lattice (sql) topology and a 3D framework of organopillared zincophosphate were discovered. Intriguing structure transformation involved disassembling and assembling of not only commonly seen molecular units but also zincophosphate polyhedra and clusters: in the former case from rare 5‐coordinate zinc to 4‐coordinate zinc, and in the latter case from original positively charged tarbuttite‐like ZnPO sheets to amine‐pillared neutral sheets composed of unique edge‐sharing Zn 2 N 2 O 4 (H 2 O) 2 dimers.