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8-羟基喹啉两亲配合物的LB膜及其电致发光器件研究 总被引:6,自引:0,他引:6
制备了两亲配体N-十六烷基-8-羟基-2-喹啉甲酰胺(HL)十个配合物的LB膜。采用π-A等温线和小角X射线衍射等方法研究了这些LB膜的性质和结构。两亲配合物的单分子占有面积为(1.25±0.06)nm^2和(0.75±0.06)nm^2,分别对应于两亲分子中两个喹啉环平躺和环与环之间以一定的角度倾斜于气/水界面。LB膜内分子排列是二维有序的超晶格结构,双层高度(5.0±0.1)nm;LB膜具有导电各向异性,其平面和垂直直流电导率分别为10^-^5S.m^-^1和10^-^9S.m^-^1;LB膜的高荧光性质使之可以用作为电致发光器件的发光材料。以LaL~2(H~2O)~4Cl的LB膜为发光层的单层电致发光器件的驱动电压为9V,发光亮度330cd/m^2,为黄绿色发光。 相似文献
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Inrecentyears,thestudyontheconversionandapplicationofsolarenergyhasbeenoneofthemostactiveaspectsinthefieldsofnewenergeticsourcedevelopment,thefabricationofnovelsolarenergycellsbecomesthegoalofpeople’sefforts.Inorganicsemiconductivesolarenergycellshave… 相似文献
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Resonance Raman and UV–vis characterization of charge transfer complexes of TCNQ and aromatic amines
Although the molecular charge transfer complexes formed by 7,7,8,8-tetracyanoquinodimethane (TCNQ) and several different donors have been widely investigated in the past, in this paper it is shown for the first time the vibrational spectroscopic characterization of the complexes formed by TCNQ and the simplest series of substituted anilines in solution. The UV–vis spectra indicate the formation of TCNQ complexes stabilized by two aromatic amines in a sandwich π type complex. It was observed that the charge transfer transition energies of the complexes follow a linear correlation with the ionization potential of the amines. The resonance Raman spectra revealed, by the analysis of the ν(CC) and ν(CN) stretching modes of TCNQ, that the complexes keep their neutral character in the ground electronic state, and not as a TCNQ2− dianion species as reported before. The observed enhancement of the TCNQ bands as the amine donor capacity increases, confirmed the charge transfer nature of the electronic transitions. The DFT and TDDFT results were obtained and the theoretical Raman and electronic spectra data supported the experimental findings. The results of the model systems presented herein can contribute to a deep understanding of the photoinduced charge transfer process in complexes of TCNQ, which is a key step in the designing of organic molecular devices. 相似文献
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含长链烷基的单羧基卟啉的合成及LB膜特性 总被引:4,自引:0,他引:4
近年来,国际上对有机光电子材料的研制和开发已成为热门课题。具有优良光电特性的卟啉分子的合成及其LB膜的结构和特性的研究,已引起人们的重视。本工作设计和合成了一种新型的含长链烷基的单羧基双亲性卟啉(Ⅳ),其结构见下图,它能在水面上展开成稳定的单层膜,并且进一步研究了这种超薄膜的结构和性质。 相似文献
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纯Y型硬脂酸铅LB膜的制备及结构表征 总被引:1,自引:0,他引:1
纯Y型硬脂酸铅LB膜的制备及结构表征陈海燕,彭笑刚,于连香,周勇亮,姜月顺,李铁津(吉林大学化学系,长春,130023)徐跃,高忠民,魏诠(吉林大学测试中心)关键词硬脂酸铅,LB膜转移,硫化铅单层膜在脂肪酸盐LB膜的沉积过程中,存在由Y型向X型沉积的... 相似文献
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Organicelectrolndnescent(EL)deviceshaverecentlyreceivedmuchattentionbecausetheycanpotentiallyproduceemissionsofallcolorsandbecauseoftheirpossibleapplicationaslarge-arealight-easttingdisplays'-'.Variousorganicmaterialswereusedastheemittinglayers.The8-hydroxyquinolinecomplexes,suchasAlq,'-',Znq2,Beq2,andMgq,'(qis8-hydroxyquinoline)wereespeciallyusedaseasttingelementsowingtotheirhighexternalquantumefficiency,luminousefficiency,brightnessandlowerdrivingvoltage.SincetheLangmuir-Blodgett(LB)film… 相似文献
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12-钨钼磷杂多酸-二甲基双十八烷基铵LB膜的制备、结构与成膜性能研究 总被引:1,自引:0,他引:1
近年来 ,用 L B技术组装有机 -多酸超分子光、电和磁功能杂化材料进展迅速 ,已引起研究者的广泛兴趣与关注 [1~ 4 ] . Clemente- Leon等 [5] 首次用 Keggin结构钨系杂多酸 ( XW12 On- 40 ,X=H2 ,P,Si,B,Co)与类脂作用制备了一系列有机 /无机超晶格 LB膜 ,并研究了它们的磁学性能 .为了设计出新型功能性有机 /无机杂化材料 ,本文报道了氧化能力更强的 1 2 -钨钼磷混配杂多阴离子与二甲基双十八烷基铵杂化 L B膜的制备、结构与成膜性能 .1 实验部分1 . 1 试剂与仪器 N ,N -二甲基双十八烷基氯化铵 (日本株式会社 ,简称 DODA ) … 相似文献
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长碳链季铵类卟啉钴配合物的合成及其LB膜和气敏性质 总被引:4,自引:0,他引:4
四-(4-N,N,N-二甲基)卟啉(TDMAPP)与溴代正十六烷反应得到溴化四-(4-N,N,N-二甲基,十六烷基氨基苯)卟啉(TDMHAPPBr)并制得其钴的配合物,两者均具有良好的成膜性。电子吸收光谱表明LB膜与成膜前固体物分子排列规整性不同,钴配合物对敢有较好的敏感性和良好的选择性,其响应和恢复时间都较短。 相似文献
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含光功能基团聚合物LB膜的研究进展 总被引:4,自引:0,他引:4
本文在简要介绍含光功能基团聚合物LB膜之后,详细回顾了功能化LB膜体系光物理过程的研究,总结了含非线性光学基团聚合物LB膜的研究现状。最后,简要介绍了它们的应用前景。 相似文献
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1,3,6,11,13,18,28,31-八溴富勒烯-C_(60)LB膜特性及导电性的研究叶玉汉,肖玉方(宁波师范学院化学系,宁波,315020)(中国科学院兰州化学物理研究所)关键词1,3,6,11,13,18,28,31-八溴富勒烯,C_(60)L... 相似文献
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Wei CAO Wei LIAN Yu Bai BAI Chun Yan LIU Hui Bo SHAO* Center for Intelligent Materials United Research 《中国化学快报》2001,(3)
Metal complexes, which are composed of metal ions and amphiphile ligands, show some structural peculiarities in Langmuir-Blodgett (LB) films. In the past studies, the metal complexes were mainly composed of the transitional metal ions1,2. The metal ions in IA, IIA and IIIA were seldom mentioned. Further more, the aluminium element is at the position where the typical metal elements transit to the typical non-metal elements in the periodic table of elements and study on the properties of … 相似文献
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Langmuir-Blodgett films of phycobiliproteins (II) --Photoelectrochemical property of R-phycoerythrin
Through an electrochemical cell deposited with R-phycoerythrin (R-PE) monolayer on SnO2 optically transparent electrode (SnO2 OTE), charge transport phenomenon and the photoelectrochemical behavior of R-PE have been investigated. The experimental results indicate that the cell is able to generate photocurrent; moreover, the signal increases apparently in the presence of electron donor or acceptor in the electrolyte solution, showing that the photocurrent of R-PE would originate from its charge transfer. Further comparative test showed that the photocurrent came from the photo-induced charge separation property of the chromorphores attached covalently to the apoprotein of R-PE. The photocurrent spectrum of R-PE LB films verified the above viewpoint, from which the mechanism of photo-induced charge transfer of R-PE is suggested. The quantum yield for photoelectric conversion of R-PE LB films was measured to be φ520nm=3.4% and the photovoltage approached 400 mV. Moreover, the protein is stable for a long 相似文献
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含偶氮生色团的“倒浮萍”聚合物LB膜及其可逆光信息存储特性 总被引:1,自引:0,他引:1
含偶氮苯功能基团的聚合物在光电子器件研制中具有诱人的应用前景.Wendorff[1]利用偶氮液晶聚合物首次实现可逆的光学信息存储后,利用偶氮苯分子的激光诱导二向色性和双折射效应实现可逆光学信息存储引起人们极大的兴趣.与传统的利用偶氮苯的顺反异构体实现信息存储的方式相比,这种信息存储方式由于偶氯苯分子始终处于热力学稳定的反式构象,因而具有突出的长期稳定性,具有更广阔的应用前景[1,2].本工作设计合成了以含有给受体的偶氮苯分子为接枝侧链的两亲性聚合物,并研究了其成膜特性与可逆光信息存储特性.1实验部分两亲性聚合物… 相似文献
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The electrical and dielectric properties of metal-insulator-semiconductor(MIS) and metal-insulator-metal(MlM) structures of various LB films were investigated. High frequency capacitance-voltage (C-V)measurements of the MIS structures of the LB films showed the accumulation,depletion and inversion regions.The dielectric constants of various LB films were calculated. Contrast with other LB films, the microgel star-shaped amphiphile(MSA) LB film showed a potential application in electronic devices due to its higher thermal and mechanical stabilities. The breakdown voltage of the MIM structure of the MSA containing only a single monolayer is over 200 V. 相似文献
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我们曾报道了沉积在 Sn O2 导电玻璃基片上的 5 ,1 0 ,1 5 ,2 0 -四 -(4 -十六烷基吡啶基 )卟啉 [TC16 Py P(4 ) ]LB膜的光电性质 [1] .结果表明 ,电解质溶液中含有电子给体和受体时 ,由于超敏化作用 ,样品光电效应明显增强 .在研究其它 LB膜时 ,我们发现将两亲性卟啉分子 A与等物质的量憎水性化合物 B一起拉膜时 ,有可能得到一一对应的混合 LB膜[2 ] .如果 A和 B分别为电子给体和受体 (反之亦然 ) ,A和 B之间应有较强的相互作用 .将这种混合 LB膜沉积在基板上 ,可能表现出新的电子与光学性质 ,从而得到具有多种功能的新材料 .本文… 相似文献