Issue 46, 2018

Photochromic naphthalene diimide Cd-MOFs based on different second dicarboxylic acid ligands

Abstract

Three novel 3D calcium-based metal–organic frameworks (FJU-67, FJU-68, and FJU-69) established on naphthalene diimide chromophores have been synthesized, which exhibit unique multiple interpenetrated networks with dia net topologies. It is noticeable that the shape and size of the second carboxylic ligands can directly influence the mode of the interpenetrated frameworks. Linear dicarboxylic acid H2BDC or NH2-H2BDC ligands can yield 5-fold interpenetrated frameworks, while 2,6-naphthalenedicarboxylic acid (H2NDC) ligand with a longer length and slight angle can produce a 4-fold (2 + 2) framework. Among the three Cd-MOFs, FJU-67 and FJU-69 with a relatively pale color exhibit reversible photochromism via the radical formation of NDI units and interpenetrating packing has a definite impact on their photochromic behaviors.

Graphical abstract: Photochromic naphthalene diimide Cd-MOFs based on different second dicarboxylic acid ligands

Supplementary files

Article information

Article type
Paper
Submitted
29 Sept. 2018
Accepted
30 Okt. 2018
First published
31 Okt. 2018

CrystEngComm, 2018,20, 7567-7573

Photochromic naphthalene diimide Cd-MOFs based on different second dicarboxylic acid ligands

Z. Li, J. Guo, F. Xiang, Q. Lin, Y. Ye, J. Zhang, S. Chen, Z. Zhang and S. Xiang, CrystEngComm, 2018, 20, 7567 DOI: 10.1039/C8CE01667D

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