Mononuclear, trinuclear, and hetero-trinuclear supramolecular complexes containing a new tri-sulfonate ligand and cobalt(II)/copper(II)-(1,10-phenanthroline)2 building blocks
摘要:
Novel mononuclear, trinuclear, and hetero-trinuclear supermolecular complexes, [Co(phen)(2)(H2O)(HTST)] center dot 2H(2)O (1), [CO3(phen)(6) (H2O)(2)(TST)(2)]center dot 7H(2)O (2), and [CO2Cu(phen)(6)(H2O)(2)(TST)(2)]center dot 10H(2)O (3), have been synthesized by the reactions of a new tri-sulfonate ligand (2,4,6-tris(4-sulfophenylamino)- 1,3,5-triazine, H3TST) with the M2+ (M = Co, Cu) and the second ligand 1, 10-phenanthroline (phen). Complex 1 contains a cis-Co(II)(phen)(2) building block and an HTST as monodentate ligand; complex 2 consists of two TST as bidentate ligands connecting one trans- and two cis-Co(II)(phen)(2) building blocks; complex 3 is formed by replacing the transCo(II)(phen)(2) in 2 with a trans-Cu(II)(phen)(2), which is the first reported hetero-trinuclear supramolecular complex containing both the Co(II)(phen)(2) and Cu(II)(phen)(2) as building blocks. The study shows the flexible multifunctional self-assembly capability of the H3TST ligands presenting in these supramolecular complexes through coordinative, H-bonding and even pi-pi stacking interactions. The photo luminescent optical properties of these complexes are also investigated and discussed as well as the second-order nonlinear optical properties of 1. (C) 2007 Elsevier Inc. All rights reserved.
Facile fabrication of three-dimensional highly ordered structural polyaniline–graphene bulk hybrid materials for high performance supercapacitor electrodes
摘要:
提出了一种新方法,用于构建三维(3D)高度有序的聚苯胺–石墨烯块状混合材料,以作为高性能超级电容器电极,采用了一个功能性分子——磺化三嗪(ST),并通过氢键和π–π堆叠相互作用在石墨烯片上吸附。添加ST的目的是为了提高石墨烯纳米片在水中的分散性,并随后通过静电相互作用诱导聚苯胺(PANI)的非均匀成核。因此,PANI纳米棒在单个磺化三嗪功能化石墨烯纳米片(STGNS)的两个表面上垂直生长,采用的是在水溶液中对苯胺进行原位化学氧化聚合。利用UV–vis、FTIR、拉曼光谱和XRD的结合详细研究了控制良好的PANI纳米棒阵列–磺化三嗪功能化石墨烯纳米片(PANI–STGNS)混合材料的形成机理。优化后的PANI–STGNS10块状混合材料在1 A g⁻¹时具有高达1225 F g⁻¹的比电容,同时展现出卓越的倍率能力和循环稳定性,这些特性对于在高性能超级电容器电极中的应用至关重要。
Facile fabrication of three-dimensional highly ordered structural polyaniline–graphene bulk hybrid materials for high performance supercapacitor electrodes
作者:Yu Liu、Yu Ma、Shanyi Guang、Hongyao Xu、Xinyan Su
DOI:10.1039/c3ta13513f
日期:——
A novel approach to constructing three-dimensional (3D) highly ordered structural polyanilineâgraphene bulk hybrid materials was proposed for high performance supercapacitor electrodes, in which a functional molecule, sulfonated triazine (ST), was introduced and adsorbed on graphene sheets via hydrogen bonding and ÏâÏ stacking interactions. The aim of adding ST is to achieve better dispersion of graphene nanosheets in water, and subsequently induce heterogeneous nucleation of polyaniline (PANI) through electrostatic interactions. Thus, the PANI nanorods were impelled to grow vertically on both surfaces of the individual sulfonated triazine functional graphene nanosheets (STGNS) via in situ chemical oxidative polymerization of aniline in aqueous solution. The formation mechanism of well-controlled PANI nanorod arrayâsulfonated triazine functional graphene nanosheet (PANIâSTGNS) hybrid materials was investigated in detail using a combination of UVâvis, FTIR, Raman spectroscopy and XRD. The optimized PANIâSTGNS10 bulk hybrid material possesses a specific capacitance as high as 1225 F gâ1 at 1 A gâ1, together with outstanding rate capability and cycling stability, which are essential for its application in high performance supercapacitor electrodes.
提出了一种新方法,用于构建三维(3D)高度有序的聚苯胺–石墨烯块状混合材料,以作为高性能超级电容器电极,采用了一个功能性分子——磺化三嗪(ST),并通过氢键和π–π堆叠相互作用在石墨烯片上吸附。添加ST的目的是为了提高石墨烯纳米片在水中的分散性,并随后通过静电相互作用诱导聚苯胺(PANI)的非均匀成核。因此,PANI纳米棒在单个磺化三嗪功能化石墨烯纳米片(STGNS)的两个表面上垂直生长,采用的是在水溶液中对苯胺进行原位化学氧化聚合。利用UV–vis、FTIR、拉曼光谱和XRD的结合详细研究了控制良好的PANI纳米棒阵列–磺化三嗪功能化石墨烯纳米片(PANI–STGNS)混合材料的形成机理。优化后的PANI–STGNS10块状混合材料在1 A g⁻¹时具有高达1225 F g⁻¹的比电容,同时展现出卓越的倍率能力和循环稳定性,这些特性对于在高性能超级电容器电极中的应用至关重要。
Mononuclear, trinuclear, and hetero-trinuclear supramolecular complexes containing a new tri-sulfonate ligand and cobalt(II)/copper(II)-(1,10-phenanthroline)2 building blocks
Novel mononuclear, trinuclear, and hetero-trinuclear supermolecular complexes, [Co(phen)(2)(H2O)(HTST)] center dot 2H(2)O (1), [CO3(phen)(6) (H2O)(2)(TST)(2)]center dot 7H(2)O (2), and [CO2Cu(phen)(6)(H2O)(2)(TST)(2)]center dot 10H(2)O (3), have been synthesized by the reactions of a new tri-sulfonate ligand (2,4,6-tris(4-sulfophenylamino)- 1,3,5-triazine, H3TST) with the M2+ (M = Co, Cu) and the second ligand 1, 10-phenanthroline (phen). Complex 1 contains a cis-Co(II)(phen)(2) building block and an HTST as monodentate ligand; complex 2 consists of two TST as bidentate ligands connecting one trans- and two cis-Co(II)(phen)(2) building blocks; complex 3 is formed by replacing the transCo(II)(phen)(2) in 2 with a trans-Cu(II)(phen)(2), which is the first reported hetero-trinuclear supramolecular complex containing both the Co(II)(phen)(2) and Cu(II)(phen)(2) as building blocks. The study shows the flexible multifunctional self-assembly capability of the H3TST ligands presenting in these supramolecular complexes through coordinative, H-bonding and even pi-pi stacking interactions. The photo luminescent optical properties of these complexes are also investigated and discussed as well as the second-order nonlinear optical properties of 1. (C) 2007 Elsevier Inc. All rights reserved.