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Article << Previous     |     Next >>   Contents Vol 63(3)

Coordination Polymers with a Bulky Perylene-Based Tetracarboxylate Ligand: Syntheses, Crystal Structures, and Luminescent Properties

Chun-Sen Liu A B, Min Hu A, Song-Tao Ma A, Qiang Zhang A, Li-Ming Zhou A, Li-Jun Gao A, Shao-Ming Fang A B

A Zhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou, Henan 450002, China.
B Corresponding authors. Email: chunsenliu@zzuli.edu.cn; smfang@zzuli.edu.cn
 
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Abstract

To explore the coordination possibilities of perylene-based ligands with a larger conjugated π-system, four ZnII, MnII, and CoII coordination polymers with perylene-3,4,9,10-tetracarboxylate (ptc) and the chelating 1,10-phenanthroline (phen) ligands were synthesized and characterized: {[Zn2(ptc)(phen)2](H2O)10} (1), {[Zn3(ptc)(OH)2(phen)2](H2O)3} (2), {[Mn(ptc)0.5(phen)(H2O)2](H2O)1.5} (3), and {[Co(ptc)0.5(phen)(H2O)2](H2O)2.5} (4). Structural analysis reveals that complexes 1 and 2 both take one-dimensional polymeric chain structures with dinuclear and trinuclear units as nodes, respectively, which are further extended via the accessorial secondary interchain interactions, such as C–H···O H-bonding or aromatic π···π stacking interactions, to give rise to the relevant higher-dimensional frameworks. Compound 3 has a two-dimensional sheet structure that is further assembled to form a three-dimensional framework by interlayer π···π stacking interactions. Complex 4 is a one-dimensional ribbon-like array structure that is interlinked by the co-effects of intermolecular π···π stacking and C–H···π supramolecular interactions, resulting in a higher-dimensional framework from the different crystallographic directions. Moreover, complexes 14 exhibit strong solid-state luminescence emissions at room temperature, which mainly originate from intraligand π→π* transitions of ptc.



   
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