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国家自然科学基金(50733002)

作品数:4 被引量:6H指数:2
相关作者:王悦张学强陈栋张晶莹王晨光更多>>
相关机构:吉林大学更多>>
发文基金:国家自然科学基金高等学校学科创新引智计划更多>>
相关领域:理学电子电信化学工程更多>>

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Self-Assembly of Luminescent Twisted Fibers Based on Achiral Quinacridone Derivatives
2009年
It is a great challenge to spontaneously assemble achiral molecules into twisted nanostructures in the absence of chiral substances.Here we show that two achiral centrosymmetric quinacridone(QA)derivatives,N,N’-di(n-hexyl)-1,3,8,10-tetramethylquinacridone(C6TMQA)and N,N’-di(n-decyl)-1,3,8,10-tetramethylquinac ridone(C10TMQA),can be employed as building blocks to fabricate well-defi ned twisted nanostructures by controlling the solvent composition and concentration.Bowknot-like bundles with twisted fiber arms were prepared from C6TMQA,whilst uniform twisted fibers were generated from C10TMQA in ethanol/THF solution.Spectroscopic characterization and molecular simulation calculations revealed that the introduction of ethanol into the solution could induce a staggered aggregation of C6TMQA(or C10TMQA)molecules and the formation of twisted nanostructures.Such twisted materials generated from achiral organic functional molecules may be valuable in the design and fabrication of new materials for optoelectronic applications.
Yunfeng ZhaoYan FanXiaoyue MuHongze GaoJia WangJingying ZhangWensheng YangLifeng ChiYue Wang
关键词:QUINACRIDONESELF-ASSEMBLY
Ultrasound responsive organogels based on cholesterol-appended quinacridone derivatives with mechanochromic behaviors被引量:1
2011年
A series of cholesterol-appended quinacridone (QA) derivatives 1a-1d have been synthesized,in which 1b and 1c could form stable organogels in a wide range of organic solvents upon ultrasound irradiation.Field emission scanning electronic microscope (FESEM) and transmission electron microscopy (TEM) of xerogels or precipitates indicated that 1b and 1c formed 1D fibrous nanostructure,while 1a assembled into 3D flower-like microstructures.The ultrasound-induced organogel process was characterized by kinetic UV-vis and photoluminescence spectroscopic methods suggesting the formation of ?-? aggregates in the gel state.Experimental results demonstrated that the ultrasound could promote molecules to contact frequently in the solution and induce semistable initial aggregates,which propagate to form nano/micro superstructures.The aggregation model was optimized by semiempirical AM1 calculation suggesting the hierarchical self-assembly process.In addition,the formed xerogel film exhibited mechanochromic property,and the phase transition process was accompanied by the fluorescence changes between yellowish green and orange.
DOU ChuanDongLI DiZHANG HongYuGAO HongZeZHANG JingYingWANG Yue
关键词:STIMULI-RESPONSIVEORGANOGELQUINACRIDONE
二苯胺取代吖啶衍生物发光材料的合成、表征及电致发光性能被引量:4
2015年
设计合成了2个苯胺取代吖啶衍生物N3,N3,N6,N6-四苯基吖啶基-3,6-二胺(1)和N3,N3,N6,N6-四对甲苯基吖啶基-3,6-二胺(2),通过化学修饰在吖啶核的两端引入二苯胺取代基可以调节化合物的能级和堆积结构等性质,从而使这些吖啶衍生物具有良好的发光性能,可用于制备电致发光器件.基于吖啶衍生物为掺杂发光材料制备的电致发光器件均呈现绿光发射,器件开启电压较低(2.4 V),以化合物1和2制备的器件最高功率效率分别为4.9和8.2 lm/W.考察了其光物理、电化学、热学和荧光量子效率等性能.结果表明,化合物1和2具有较高的量子效率及匹配的能级结构,这是获得较高电致发光效率的基础.
陈栋张学强张晶莹王悦
关键词:有机电致发光
吖啶衍生物的合成、表征、光致发光及电致发光性质研究被引量:2
2013年
本文设计合成了一系列以吖啶为核的荧光小分子发光化合物(1~4),通过在分子两侧引入不同的取代基来调节化合物的能级、载流子传输性质.对这些材料的光物理、电化学、热力学和能量转移性能进行了系统表征.结果表明这些材料具有高的发光效率、合理的能级结构和良好的主/客体能量转移特性.以这些材料为发光层的器件显示了优良的性能,电致发光器件的开启电压为2.4V,最高效率可达到13.3lm/W和11.8cd/A.
陈栋张学强王晨光王晨光叶开其王悦
关键词:有机电致发光
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