期刊文献+
共找到6篇文章
< 1 >
每页显示 20 50 100
Synthesis and Liquid Crystal Properties of Transition Metal Complexes of Meso-tetra(4-n-myristyloxyphenyl)porphyrin 被引量:3
1
作者 LIUWei SHIYu-hua SHITong-shun 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2004年第1期20-23,共4页
Transition metal complexes of meso-tetra(4-myristyloxyphenyl)porphyrin TMPPM [M =Mn, Fe, Co, Ni, Cu, Zn; TMPP=mesotetra(4-myristyloxyphenyl)porphyrin] have been synthesized and characterized by means of elemental an... Transition metal complexes of meso-tetra(4-myristyloxyphenyl)porphyrin TMPPM [M =Mn, Fe, Co, Ni, Cu, Zn; TMPP=mesotetra(4-myristyloxyphenyl)porphyrin] have been synthesized and characterized by means of elemental analyses, UV-Vis spectra, infrared photoacoustic spectra, 1H NMR spectra, molar conductance and differential scanning calorimetry(DSC). The ligand and the Zn complex show liquid crystalline behavior. According to the DSC thermogram of the Zn complex, it exhibits a lower phase transition temperature -7.453 ℃ and a wide mesophase temperature span, 77 ℃. 展开更多
关键词 Transition metal complex meso-tetra(4-n-myristyloxyphenyl)porphyrin Differential scanning calorimetry Liquid crystal
下载PDF
Synthesis and Characterization of Liquid Crystal of meso-Tetra(4-n-octanoyloxyphenyl)porphyrin 被引量:1
2
作者 LIU Wei SHI Tong shun 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1998年第2期102-104,共3页
SynthesisandCharacterizationofLiquidCrystalofmeso┐Tetra(4┐n┐octanoyloxyphenyl)porphyrin*LIUWeiandSHITong-shu... SynthesisandCharacterizationofLiquidCrystalofmeso┐Tetra(4┐n┐octanoyloxyphenyl)porphyrin*LIUWeiandSHITong-shun**(DepartmentofC... 展开更多
关键词 Liquid crystal meso-tetra(4-n-octanoyloxyphenyl)porphyrin METALLOporphyrin
下载PDF
In situ meso-tetra(4-carboxyphenyl)porphyrin ligand substitution in Hf-MOF for enhanced catalytic activity and stability in photoredox reactions
3
作者 Jie Hu Hong-Xin Lao +3 位作者 Xiu-Wu Xu Wei-Kang Wang Le-Le Wang Qin-Qin Liu 《Rare Metals》 SCIE EI CAS CSCD 2024年第6期2682-2694,共13页
Though there are numerous intrinsic merits of metal-organic frameworks(MOFs),low charge separation efficiency has imposed heavy restrictions on their photocatalytic application.Herein,in situ porphyrin ligand substitu... Though there are numerous intrinsic merits of metal-organic frameworks(MOFs),low charge separation efficiency has imposed heavy restrictions on their photocatalytic application.Herein,in situ porphyrin ligand substitution,as a strategy for improving the charge separation efficiency and increasing the amounts of active sites,has been designed and realized in a Hf-biphenyl dicarboxylic acid(BPDC)MOF.Specifically,a size and geometry matched meso-tetra(4-carboxyphenyl)porphyrin(TCPP)ligand was selected and doped into Hf-BPDC MOF by forming coordinating bonds with Hf centers,forming dualligand Hf-BPDC-TCPP MOF.The resultant Hf-BPDC-TCPP MOF showed significantly improved activity and chemical stability in the photocatalytic H_(2)generation(261μmol·g^(-1)·h^(-1))and tetracycline(TC)degradation reactions(95.8%),which was 48 and 1.47 folds higher than that of the Hf-BPDC MOF.Photophysical and electrochemical studies revealed that the introduction of porphyrin ligand could generate a stronger internal electric field for boosting the charge separation and transfer,increase the specific surface area for providing more active sites,and narrow the band gap to enhance the visible light absorption.This in situ ligand substitution method provides a promising approach to build a tunable platform for constructing high-performance MOF photocatalysts. 展开更多
关键词 Ligand substitution Metal organic frameworks meso-tetra(4-carboxyphenyl)porphyrin Hydrogen evolution reaction Tetracycline degradation
原文传递
Synthesis and Langmuir-Blodgett Film Analysis of Atropisomers of “Picket Fence” Porphyrin 被引量:2
4
作者 WANG Chao-wei REN Yu-jie +1 位作者 CAO Zhen-feng CHEN Qi-bin 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2010年第5期761-767,共7页
Four "picket fence" porphyrin atropisomers were respectively synthesized from the four corresponding atropisomers of meso-tetra(o-aminophenyl)porphyrin that had been chromatographed on a column eluted with petrole... Four "picket fence" porphyrin atropisomers were respectively synthesized from the four corresponding atropisomers of meso-tetra(o-aminophenyl)porphyrin that had been chromatographed on a column eluted with petroleum ether and ethyl acetate. Results show that each atropisomer could be successfully synthesized by controlling the acylation temperature at 0 ℃. They were characterized by 1H NMR, HRMS, IR, UV-Vis and Langmuir-Blodgett(LB) film analyses. Although the results of HRMS, IR, UV-Vis analyses indicate there is no remarkable difference among the atropisomers, the results of the 1H NMR and the mean molecular areas obtained by LB film technique imply that the atropisomers are significantly discrepant. The former shows that the chemical shifts of the methyl and amide protons of each atropisomer are distinct, while the later presents that the different atropisomer molecules can occupy the different surface areas at the air/water interface. 展开更多
关键词 "Picket fence" porphyrin ATROPISOMER Langmuir-Blodgett(LB) film meso-tetra(o-pivalamidophenyl)porphyrin
下载PDF
A Spectrometric Setup for Synchronous Total Internal Reflection Fluorescence Measurement at the Solid/Liquid Interface 被引量:1
5
作者 Yao Qun LI Jia Ju XU +2 位作者 Run Tang WANG Li Jun YU Zhao LI 《Chinese Chemical Letters》 SCIE CAS CSCD 2002年第6期571-572,共2页
A spectrometric setup to perform total internal reflection fluorescence (TIRF) and synchronous TIRF measurements at solid/liquid interfaces is presented. The combination of TIRF and synchronous fluorescence was propo... A spectrometric setup to perform total internal reflection fluorescence (TIRF) and synchronous TIRF measurements at solid/liquid interfaces is presented. The combination of TIRF and synchronous fluorescence was proposed to analyze simultaneously different components at interfaces. The TIRF excitation, emission and synchronous spectra of a watersoluble porphyrin were obtained from water/glass interface using this setup without the existence of a surfactant. 展开更多
关键词 Total internal reflection fluorescence synchronous fluorescence spectrofluorimeter meso-tetra(4-sulfonatophenyl)porphyrin.
下载PDF
Hydrothermal Preparation, Crystal Structure and Properties of {[ZnTCPP(EtOH)][Zn(en)]2}n(EtOH)2n with a Novel Two-Dimensional (2-D) Motif
6
作者 Chen,Wentong 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2012年第2期273-276,共4页
A novel zinc porphyrin, {[ZnTCPP(EtOH)][Zn(en)]2},(EtOH)2, (1) (TCPP=meso-tetra(4-carboxyphenyl)- porphyrin; EtOH=ethanol; en=ethylenediamine) was obtained via a hydrothermal reaction and characterized by ... A novel zinc porphyrin, {[ZnTCPP(EtOH)][Zn(en)]2},(EtOH)2, (1) (TCPP=meso-tetra(4-carboxyphenyl)- porphyrin; EtOH=ethanol; en=ethylenediamine) was obtained via a hydrothermal reaction and characterized by single-crystal X-ray diffraction. Complex 1 crystallizes in the space group C2/c of the monoclinie system with eight formula units in a cell: a=32.465(4) A, b=10.527(3) A, c=31.845(3) A,β=95.524(6)°, V=10832(4) A3, C58H57NsOaIZn3, Mr= 1238.23, Dc= 1.518 g/cm3, S=1.005, μ(Mo Kα)= 1.388 mm-1, F(000)=5112, R=0.0650 and wR=0.1574. Complex 1 features a novel 2-D layered motif. The spectral data of UV-vis, FT-IR and fluorescence are reported. 展开更多
关键词 crystal fluorescence HYDROTHERMAL porphyrin meso-tetra(4-carboxyphenyl)-porphyrin (TCPP)
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部