Under solvothermal conditions,six new coordination polymers(CPs)[Mn(L)(phen)(H_(2)O)]_(n)(1),[Co(L)(phen)(H_(2)O)]_(n)(2),[Cu(L)(phen)(H_(2)O)]_(n)(3),[Zn_(2)(L)_(2)(phen)2(H_(2)O)]_(n)(4),[Zn(L)(phen)]_(n)(5),and[Cd(...Under solvothermal conditions,six new coordination polymers(CPs)[Mn(L)(phen)(H_(2)O)]_(n)(1),[Co(L)(phen)(H_(2)O)]_(n)(2),[Cu(L)(phen)(H_(2)O)]_(n)(3),[Zn_(2)(L)_(2)(phen)2(H_(2)O)]_(n)(4),[Zn(L)(phen)]_(n)(5),and[Cd(L)(phen)2]_(n)(6)were synthesized by reactions of dicarboxylate ligand 2,2'-(1,2-phenylenebis(methylene))bis(sulfanediyl)dinobutyric acid(H_(2)L)and 1,10-phenanthroline(phen)with the corresponding metal salts.Complexes 1-6 have been structurally characterized by single-crystal X-ray diffraction analyses,elemental analysis,IR,thermogravimetric analysis,and powder X-ray diffraction.The structures of 1-6 are 1D chains,which are further connected by hydrogen bonding interac-tions to form 3D supramolecular structures.Among them,1 and 2 are isomorphic with L2-of syn-conformation,while L2-shows anti-conformation in 3-6.In addition,the solid-state photoluminescence property of 4-6 was investigated.展开更多
Under hydrothermal conditions, two new ribbon-like structures, [Cu(C14H9O4)- (C14H10O4)(C12H12N2)2] 1 and [Ag(C14H9O4)(C13H14N2)]0.5H2O 2, were obtained. X-ray crystal analysis revealed that these structures were cons...Under hydrothermal conditions, two new ribbon-like structures, [Cu(C14H9O4)- (C14H10O4)(C12H12N2)2] 1 and [Ag(C14H9O4)(C13H14N2)]0.5H2O 2, were obtained. X-ray crystal analysis revealed that these structures were constructed by mixed ligands. The coordination polymer forms the basic architecture while the weak interactions extend the framework into a secondary structure. The whole structures of them are governed by collaboration of the strong and weak interactions. Compound 1 crystallizes in monoclinic, space group C2/c with a = 17.0485(3), b = 11.0558(3), c = 22.7623(4) ? ?= 102.465(1), V = 4189.2(2) 3, Z = 4, Mr = 915.44, Dc = 1.451 g/mL, F(000) = 1904 and m(MoKa) = 0.587 cm-1. The final R and wR are 0.0430 and 0.1022, respectively for 3037 observed reflections with I > 2s(I). Compound 2 crystallizes in monoclinic, space group P21/c with a = 11.5963(4), b = 11.7004(5), c = 17.1254(5) ? ?= 95.620(1), V = 2312.4(1) 3, Z = 4, Mr = 556.35, Dc = 1.598 g/mL, F(000) = 1132 and m(MoKa) = 0.912 cm-1. The final R and wR are 0.0431 and 0.1050, respectively for 2629 observed reflections with I > 2σ(I).展开更多
In this work, DSC and SEM studies indicate that ion-ligand interaction can be utilized to enhance the interaction of poly (styrene-block-2-vinyl pyridine)[P (S-b-2VP)] and polyethylene based ionomer (Surlyn). The comp...In this work, DSC and SEM studies indicate that ion-ligand interaction can be utilized to enhance the interaction of poly (styrene-block-2-vinyl pyridine)[P (S-b-2VP)] and polyethylene based ionomer (Surlyn). The compatibility for this blending system can be improved by this special interaction and 20/80 wt is the optimum blending composition with good compatibility. FTIR results further certify that strong interactions exist in the blending system.展开更多
Many organic molecules with various functional groups have been used to passivate the perovskite surface for improving the efficiency and stability of perovskite solar cell(PSCs).However,the intrinsic attributes of th...Many organic molecules with various functional groups have been used to passivate the perovskite surface for improving the efficiency and stability of perovskite solar cell(PSCs).However,the intrinsic attributes of the passivation effect based on different chemical bonds are rarely studied.Here,we comparatively investigate the passivation effect among 12 types of functional groups on para-tertbutylbenzene for PSCs and find that the open circuit voltage(VOC) tends to increase with the chemical bonding strength between perovskite and these passivation additive molecules.Particularly,the paratert-butylbenzoic acid(tB-COOH),with the extra intermolecular hydrogen bonding,can stabilize the surface passivation of perovskite films exceptionally well through formation of a crystalline interlayer with water-insoluble property and high melting point.As a result,the tB-COOH device achieves a champion power conversion efficiency(PCE) of 21.46%.More importantly,such devices,which were stored in ambient air with a relative humidity of ~45%,can retain 88% of their initial performance after a testing period of more than 1 year(10,080 h).This work provides a case study to understand chemical bonding effects on passivation of perovskite.展开更多
文摘Under solvothermal conditions,six new coordination polymers(CPs)[Mn(L)(phen)(H_(2)O)]_(n)(1),[Co(L)(phen)(H_(2)O)]_(n)(2),[Cu(L)(phen)(H_(2)O)]_(n)(3),[Zn_(2)(L)_(2)(phen)2(H_(2)O)]_(n)(4),[Zn(L)(phen)]_(n)(5),and[Cd(L)(phen)2]_(n)(6)were synthesized by reactions of dicarboxylate ligand 2,2'-(1,2-phenylenebis(methylene))bis(sulfanediyl)dinobutyric acid(H_(2)L)and 1,10-phenanthroline(phen)with the corresponding metal salts.Complexes 1-6 have been structurally characterized by single-crystal X-ray diffraction analyses,elemental analysis,IR,thermogravimetric analysis,and powder X-ray diffraction.The structures of 1-6 are 1D chains,which are further connected by hydrogen bonding interac-tions to form 3D supramolecular structures.Among them,1 and 2 are isomorphic with L2-of syn-conformation,while L2-shows anti-conformation in 3-6.In addition,the solid-state photoluminescence property of 4-6 was investigated.
基金This work was supported by the grants from State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter+1 种基金 the Chinese Academy of Sciences (CAS) and the Science Foundation of CAS and Fujian province (2002F014,
文摘Under hydrothermal conditions, two new ribbon-like structures, [Cu(C14H9O4)- (C14H10O4)(C12H12N2)2] 1 and [Ag(C14H9O4)(C13H14N2)]0.5H2O 2, were obtained. X-ray crystal analysis revealed that these structures were constructed by mixed ligands. The coordination polymer forms the basic architecture while the weak interactions extend the framework into a secondary structure. The whole structures of them are governed by collaboration of the strong and weak interactions. Compound 1 crystallizes in monoclinic, space group C2/c with a = 17.0485(3), b = 11.0558(3), c = 22.7623(4) ? ?= 102.465(1), V = 4189.2(2) 3, Z = 4, Mr = 915.44, Dc = 1.451 g/mL, F(000) = 1904 and m(MoKa) = 0.587 cm-1. The final R and wR are 0.0430 and 0.1022, respectively for 3037 observed reflections with I > 2s(I). Compound 2 crystallizes in monoclinic, space group P21/c with a = 11.5963(4), b = 11.7004(5), c = 17.1254(5) ? ?= 95.620(1), V = 2312.4(1) 3, Z = 4, Mr = 556.35, Dc = 1.598 g/mL, F(000) = 1132 and m(MoKa) = 0.912 cm-1. The final R and wR are 0.0431 and 0.1050, respectively for 2629 observed reflections with I > 2σ(I).
文摘In this work, DSC and SEM studies indicate that ion-ligand interaction can be utilized to enhance the interaction of poly (styrene-block-2-vinyl pyridine)[P (S-b-2VP)] and polyethylene based ionomer (Surlyn). The compatibility for this blending system can be improved by this special interaction and 20/80 wt is the optimum blending composition with good compatibility. FTIR results further certify that strong interactions exist in the blending system.
基金supported by the Research Grants Council of Hong Kong (T23-407/13-N)Innovation and Technology Commission (ITS/088/17)+5 种基金Start-up funds from Central Organization Department and South China University of Technologyfund from the Guangdong Science and Technology Program (2020B121201003)the National Natural Science Foundation of China (21776315)Petro China Innovation Foundation (2017D5007-0402)the Pearl River Talent Program (2019ZT08L075, 2019QN01L118)Fundamental Research Funds for the Central Universities (19CX05001A)。
文摘Many organic molecules with various functional groups have been used to passivate the perovskite surface for improving the efficiency and stability of perovskite solar cell(PSCs).However,the intrinsic attributes of the passivation effect based on different chemical bonds are rarely studied.Here,we comparatively investigate the passivation effect among 12 types of functional groups on para-tertbutylbenzene for PSCs and find that the open circuit voltage(VOC) tends to increase with the chemical bonding strength between perovskite and these passivation additive molecules.Particularly,the paratert-butylbenzoic acid(tB-COOH),with the extra intermolecular hydrogen bonding,can stabilize the surface passivation of perovskite films exceptionally well through formation of a crystalline interlayer with water-insoluble property and high melting point.As a result,the tB-COOH device achieves a champion power conversion efficiency(PCE) of 21.46%.More importantly,such devices,which were stored in ambient air with a relative humidity of ~45%,can retain 88% of their initial performance after a testing period of more than 1 year(10,080 h).This work provides a case study to understand chemical bonding effects on passivation of perovskite.
