检索结果-南通市图书馆

Chinese Chemical Letters 2024年第7期35卷 301-305页

作者： Shengwen Guan Zhaotong Wei Ningxu Han Yude Wei Bin Xu Ming Wang Junjuan Shi State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China

The stable coordinated metallo-complexes based on 2,2′:6′,2″-terpyridine(tpy)and its derivatives have been widely researched for various wide-ranging applications in photoelectronics,catalysis,sensor,photoluminescence,and so ***,the most reported studies ignored the comprehensive comparison between structures modified by different positions and ***,we design a series of metallo-complexes which were assembled with tpy substituted triphenylamine(TPA)at different positions and metal ions and explored their photophysical *** the solution state,MLE_(2)based on the 5,5″-positions modification showed the highest PLQYs and PL *** the increase of solvent polarity,MLB2exhibit the largest *** the solid state,from MLA_(2)to MLE_(2),the emission colours are gradually red-shifted from yellow to *** findings in this work may pave a new way to design functional metallo-complexes,not just for PL properties.

关键词： Metallo-complexes 2,2′:6′,2″-terpyridine Triphenylamine Different modified positions photophysical properties

photophysical properties of a new ternary europium complex with 2-thenoyltrifluoroacetone and 5-nitro-1,10-phenanthroline

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2010年第6期28卷 854-857页

作者：徐存进 College of Material Chemistry and Chemical Engineering Hangzhou Normal University

A ligand, 5-nitro-1,10-phenanthroline (phenNO2), was synthesized. Its Eu(III) complex with 2-thenoyltrifluoroacetone (HTTA) was prepared and characterized by elemental analysis, IR and 1H NMR spectra. The photophysical properties of the complex were studied in detail by using UV, luminescence spectra, luminescence lifetime and quantum yield. The complex exhibited nearly monochromatic red emission at 612 nm, a remarkable luminescence quantum yield at room temperature (36.0%) upon ligand excitation and a long 5D0 lifetime (458 μs), which indicated that the ligand phenNO2 could sensitize the luminescence of Eu(III) ion efficiently.

关键词： europium complex 5-nitro-1,10-phenanthroline 2-thenoyltrifluoroacetone energy transfer photophysical properties rare earths

photophysical properties of octupolar chromophore based on triazine core and fluorene divinylene conjugated bridge

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2012年第7期23卷 867-870页

作者： Li Wei Jie Ping Shi Zhi Qiang Zhou Yi Ping Cui Hong Wen Hu Guo Yuan Lu Department of Chemistry State Key Laboratory of Coordination ChemistryNanjing UniversityNanjing 210093China Advanced Photonics Center Southeast UniversityNanjing 210096China

A novel octupolar chromophore with 1,3,5-triazine as core,2,7-divinylene-9,9-dimethylfluorene as extendedπ-conjugated bridge,triarylamine as the electron-donating end-groups was successfully synthesized and *** linear photophysical and two-photon absorption（TPA） properties were investigated by UV absorption,excited fluorescence（SPEF） spectra and nonlinear transmission method,*** absorption cut-off of the chromophore is below 520 nm and it has stronger fluorescence emission in a nonpolar *** addition,the chromophore exhibits larger TPA cross-section（226.0 GM） in the femtosecond regime at 800 nm.

关键词： Ocmpolar molecules Synthesis Homer-Wadsworth-Emmons reaction photophysical properties TPA cross-section

Special photophysical properties of Poly(2,11-diquinoxalinopyrene)s

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2017年第9期35卷 1097-1109页

作者： Ming-jian Jiang Xin-yuan Li Lei-tao Sun Xiao-long Niu Qiu-min Liang Xiao-qiang Cai Jin-chang Huang 凌军莫越奇 College of Materials Science andEngineering South China University of Technology Guangzhou 510640 China Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 31002 7 China

A diquinoxalinopyrene （DQP） derivative and the corresponding oligomers （PDQPs） with Mn of ca. 3300, 4200, 5600, and 7300 have been synthesized. It is found that the band gaps and highest occupied molecular orbital （HOMO）/lowest unoccupied molecular orbital （LUMO） levels between DQP and its homopolymers only have a slight difference, implying a limited conjugation extension achieved from unimer to heptamer. The DFT calculation is in accordance with the experimental results. It reveals that the nodal planes are across the 2,11-positions in the LUMO and/or HOMO of DQP, dimer and trimer, which can be used to explain this special phenomenon.

关键词： Polydiquinoxalinopyrene photophysical properties Nodal

Synthesis and photophysical properties of Dy^(3+) and Gd^(3+) Polymeric Complexes with Functionalized Polybenzimidazole Containing β-Diketone Side Group

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2007年第5期25卷 562-567页

作者：吴骞钟超凡郭荣芳何爱红黄华良 Deportment of Chemistry Xiangtan University Xiangtan 411105 China

The polymeric ligand PBIa （functionalized polybenzimidazole containing β-diketone side group） was successfully synthesized via the reaction of polybenzimidazole （PBI） with 3-Br-acetylacetone in DM SO solvent using Nail as the deprotonation reagent. Its corresponding polymeric complexes of Dy^3＋ and Gd^3＋ were prepared and characterized by FT-IR, ^1H NMR, molar conductance measurements, and thermal analysis. The photoluminescence properties and the probable mechanism of the Dy and Gd complexes were studied. The measurement and analysis of the thermal properties showed that these were thermal stable.

关键词： lanthanide complexes polybenzimidazole polymeric complexes photophysical properties rare earths

Hydrothermal Preparation and photophysical properties of a Ni(Ⅱ) Complex Containing Quinoline Derivative and Phen Ligands

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2021年第4期40卷 501-506,408页

作者： CHEN Hai-Hui YI Xiu-Guang PAN Chang-Wang WEN Ji-Wu ZHANG Cong School of Chemistry and Chemical Engineering Jinggangshan UniversityJi’anJiangxi 343009China

A novel nickel complex[Ni_(2)L_(2)Phen_(3)]·3H_(2)O (HL=3-hydroxy-2-methylquioline-4-carboxylic acid)has been synthesized by a hydrothermal approach and is structurally determined by single-crystal X-ray *** title complex crystallizes in triclinic space group *** data for the title complex:C58H44N8Ni2O9,Mr=1108.35,a=11.8648(4),b=12.7369(4),c=17.0728(5)A,α=97.694(3),β=96.702(2),γ=99.566(3)°,V=2495.66(14)A^(3),Z=2,T=293(2) K,Dc=1.475 g/cm^(3),μ(Mo Kα)=0.824 mm^(–1),F(000)=1140,R=0.0757,w R=0.2129 and GOF=*** nickel ions are surrounded by five oxygen and six nitrogen atoms to yield two slightly distorted octahedral ***-state photoluminescence spectrum reveals that it shows blue purple ***-state UV/Vis diffuse reflectance spectroscopy exhibits that it has an optical band gap of 1.702 e V.

关键词： hydrothermal preparation crystal structure photophysical properties

Synthesis and Evaluation of photophysical properties of C-3 Halogenated Derivatives of 2-Phenylimidazo[1,2-a]pyridine

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2022年第19期40卷 2313-2328页

作者： Hong Chen Yanyan Wang Qingjie Liu Yanchun Guo Shuxia Cao Yufen Zhao College of Chemistry Zhengzhou UniversityZhengzhouHenan450001 China Institute of Drug Discovery Technology Ningbo UniversityNingboZhejiang315211 China

A CuX-mediated regioselective halogenation reaction of 2-phenylimidazo[1,2-a]pyridine in the presence of oxygen is introduced in this *** reaction provides an effective method for the production of C-3 halogenated 2-phenylimidazo[1,2-a]pyridines with a yield of up to 96%.A plausible mechanism for the formation of title compounds via 2-phenylimidazo[1,2-a]pyridine–CuX complex intermediate is *** structure of representative compounds is established by the single crystal XRD *** electronic structure,corroborated by Hirshfeld surface analysis and DFT calculations,rationalizes characters of relevant absorptions and emission as well as large Stokes shifts.

关键词： Imidazole[1,2-a]lpyridine Halogenation Cuprous halide DFT calculations photophysical properties

Synthesis, photophysical properties and Near Infrared Electroluminescence of 1 （4）,8（11）,15（18）,22（25）-Tetra- （methoxy-phenoxy） phthalocyanine

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2012年第3期30卷 689-694页

作者：白青龙张春花程传辉李万程王瑾杜国同 School of Physics and Optoelectronic Technology Dalian University of TechnologyDalianLiaoning 116024China College of Chemistry and Chemical Engineering Inner Mongglia University for NationalitiesTongliaoNeimenggu 028043China State Key Laboratory on Integrated Optoelectronics College of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchunJilin 130012China

A new soluble phthalocyaine 1 （4）,8（11）, 15（18）,22（25）-tetra-（methoxy-phenoxy）phthalocyanine （MPPc） was synthesized and verified by mass spectrum （MS）, 1H NMR, IR and elemental analysis. The methoxy-phenoxy groups were introduced in order to enhance the solubility of the phthalocyanine. The photophysical and electrolu- minescent properties were investigated. The organic light-emitting diodes （OLEDs） with the structure of ITO/PVK：MPPc（40 nm）/BCP（20 nm）/Alq3（30 nm）/Al were fabricated. Room-temperature near infrared （NIR） electroluminescence （EL） was observed near 891 nm that effectively covered the first optical communication win- dow near 850 nm.

关键词： phthalocyanine electroluminescence photophysical properties near infrared

Case synthesis of a β-chloro bulky bis-pocket corrole:Crystallographic characterization and photophysical properties

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2018年第12期29卷 1888-1892页

作者： Atif Ali Fan Cheng Wei-Hong Wen Xiao Ying Jaipal KANDhadi Hui Wang Hai-Yang Liu Chi-Kwong Chang Department of Chemistry Key Laboratory of Functional Molecular Engineering of Guangdong Province South China University of Technology Department of Applied Physics South China University of Technology State Key Laboratory of Optoelectronics Materials and Technologies Sun Yat-sen University Department of Chemistry Michigan State University

A new 2-chloro-5,10,15-tris（2,4,6-triphenylphenyl）-corrole was accidentally synthesized in an acceptable yield of 5.7% during the synthesis of its parent corrole, in which DDQ served as oxidant and chlorinating agent. The compound was well characterized by X-ray diffraction analysis,;H NMR, mass spectroscopy and absorption spectroscopy. photophysical properties tests revealed that the chlorination caused a sharp decrease in fluorescence intensity, fluorescence life time, and fluorescence quantum *** investigation demonstrated the positive shift of redox potentials for chlorinated corrole as compared to non-chlorinated corrole.

关键词： Corrole β-Chlorination Synthesis photophysical properties Singlet oxygen

Synthesis and photophysical properties of metal anthraquinone phthalocyanine

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2007年第5期18卷 509-512页

作者： Yi Ru Peng Kui Zhi Chen Jia Bao Wen Ji Cheng Shi Bao Quan Huang College of Chemistry ＆ Materials Science Fujian Normal University Fuzhou 350007 China Stute Key Laboratory for Structure Chemistry Chinese Academy of Science Fuzhou 350003 China

A novel anthraquinone phthalocyanine AI（Ⅲ） 4 and Co（Ⅱ） 5 were synthesized and characterized by elemental analysis, IR UV/ vis, ^1H NMlL HPLC and MS. The photophysical properties of the two metal complexes were s... 详细信息

关键词： Anthraquinone phthalocyanine Al(Ⅲ) and Co(Ⅱ) Synthesis Characterization photophysical properties