A series of pyridyl-amide-based Zn-II/Cd-II coordination polymers and their polypyrrole-functionalized composite materials for tuning their photocatalytic properties

作者：Wang, Xiu-Li^*; Wu, Xiao-Mei; Liu, Guo-Cheng; Lin, Hong-Yan; Wang, Xiang

来源：RSC Advances, 2016, 6(88): 85030-85040.

DOI：10.1039/c6ra18428f

• METAL-ORGANIC FRAMEWORKS
• CRYSTAL-STRUCTURES
• BIS-AMIDE
• CARBOXYLATES SYNTHESES
• BUILDING UNITS
• HYDROGEN-BONDS
• CD-II
• LIGANDS
• PHOTOLUMINESCENT
• LUMINESCENCE

In continuation of our research interest in bis-pyridyl-bis-amide-based multifunctional coordination polymer (CPs) materials, we report here six Zn-II/Cd-II CPs, [Cd(L)(5-NIP)(H2O)]center dot H2O (CP1), [Cd(L)(2,5-TPD)]center dot DMA (CP2), [Cd(L)(2,5-TPD)]center dot 2H(2)O (CP3), [Zn(L)(2,5-TPD)]center dot 2H(2)O (CP4), [Zn(L)(1,3-BDC)]center dot H2O (CP5) and [Zn-2(L)(5-AIP)(2)]center dot 2H(2)O (CP6) constructed from L and various aromatic polycarboxyates coligands and their polypyrrole (PPy)-functionalized composite materials (L = N,N'-bis(pyridine-3-yl)-4,4'-oxybis(benzoic) dicarboxamide, 5-H2NIP = 5-nitroisophthalic acid, 2,5-H2TPD = 2,5-thiophenedicarboxylic acid, 1,3-H2BDC = 1,3-benzenedicarboxylic acid, 5-H(2)AIP = 5-aminoisophthalic acid). The title complexes were solvothermally synthesized and structurally characterized by single-crystal X-ray diffraction analyses, IR spectra, UV-vis diffuse-reflectance spectra (DRS), powder X-ray diffraction (PXRD) and thermal gravimetric analyses (TG). Single-crystal X-ray analysis reveals that CP1-CP6 display 2D architectures with versatile coordination features. The PPy-functionalized CP1-CP6 composite materials (named as PPy/CPn (n = 1, 2, 3, 4, 5, 6)) were fabricated by the combination of micro-sized CPs particles and PPy via a facile in situ chemical oxidation polymerization process under the initiation of ammonium persulfate (APS). The fluorescent properties of the title complexes have been investigated. In particular, the photocatalytic activities of the micro-sized particles of CP1-CP6 and their PPy-functionalized composite materials have also been investigated. These PPy-functionalized composite materials show superior photocatalytic activities for the degradation of rhodamine B (RhB) under visible light irradiation.

• 出版日期2016
• 单位渤海大学