三芴胺化合物、三芴胺聚合物发光材料及制备方法和应用

本发明公开了一种三芴胺化合物、三芴胺聚合物发光材料及制备方法和应用,该材料以三芴胺为骨架,通过改变含三芴胺聚合物发光材料侧链的化学结构可以调控发光材料的双极性和发光颜色;化学结构如右所示,制备方法是以芴作为最初的反应原料,通过一系列的简单反应,     

键接笼形倍半硅氧烷的聚芴共聚物的合成

本文成功合成了侧链含多面齐聚倍半硅氧烷(POSS)的聚芴共聚物,该聚合物易溶于常用的有机溶剂。POSS的引入能够提高聚合物的耐热和抗氧性,也能够有效抑制聚合物链的聚集,从而提高聚芴作为发光材料时的稳定性。     

基于不对称螺二芴芳胺类蓝光发光材料的合成与性能研究

螺二芴衍生物作为蓝光发光材料被广泛应用于有机发光半导体（OLED）器件。以螺二芴为母体,在2,7位分别引入具有空穴迁移率高的二苯胺和三苯胺基团,设计合成了不对称的螺二芴芳胺类发光材料7-(4-(二苯胺)苯基)-N,N-二苯-9,9’-螺二芴-2-胺。研究表明,该化合物具有较高的热稳定性,其荧光发射波长为445nm,位于蓝光区域。同时具有高度扭曲的分子结构,有利于抑制分子间相互作用和自聚集,有效抑制非辐射,可应用于构建高效的有机蓝光发光材料。     

有机电致发光材料芴衍生物的合成

芴衍生物被认为是很有开发前景和实用价值的一类发光材料,它具有较为优异的综合性能,如良好的发光效率,较好的热稳定性等。本研究工作采用条件温和、产率较高的合成路线,对芴为单体进行官能团修饰,制备了9,9-二甲基芴、9,9-二甲基-2-硝基芴、9,9-二甲基-2-氨基芴、N-（4-联苯基）-9,9-二甲基-2-氨基芴。并对影响反应的重要因素进行了考察和讨论。     

几种芴芳胺衍生物制备方法的研究进展

描述了几种带有取代基的的双胺芴化合物的合成方法,由于这些化合物具有热稳定性光稳定性、和较好的溶解性,因此是合成芴类发光材料的重要中间体,也可以合成耐热聚酰亚胺树脂等材料。这些化合物主要的合成方法为取代芴酮与苯胺在酸催化剂作用下发生缩合反应,生成9-位双胺芴类化合物。反应条件为苯胺芴酮物质的量比为8~10,苯胺盐酸盐为催化剂,反应温度130~150℃,反应时间5~6h,收率多为80%~90%。     

芴液晶的研究进展

介绍了近年来芴液晶的研究进展,包括以芴酮(醇)及9位取代芴为核心的液晶化合物,阐述了这类化合物的结构与液晶性质及光电性质之间的关系。该类化合物在光电发光材料、有机太阳能电池材料等领域有广泛的应用前景。     

9,9-二甲基芴-2-硼酸的合成研究

芴衍生物是一类很有开发前景和实用价值的发光材料。9,9-二甲基芴-2-硼酸是合成OLED材料的重要中间体。本文以芴为原料,经溴化,甲基化,格式试剂法得到9,9-二甲基芴-2-硼酸,并对影响反应的重要因素进行了考察和讨论。本文采用的工艺路线合理,反应时间短,产品收率高。     

一种聚芴类磷光主体材料的合成与性能研究

有机电致磷光材料,由于具有100%的内量子效率,在OLED领域中被广泛应用。为了避免磷光材料本身存在的三线态-三线态激子猝灭导致磷光效率的降低,磷光材料应用于有机电致发光器件时,需要用主体材料将其均匀分散以减少发光中心间的相互作用,因此主体材料的选择对磷光器件是十分重要的。而聚合物主体材料由于具有易加工,成本低等优点,且对于实现高性能的蓝光和白色旋涂器件有重要意义,而备受关注。本文设计合成了一种聚芴类主体材料PSiF,聚合物表现出良好的热稳定性(热分解温度Td≥400℃),将其与绿色磷光染料Ir(ppy)3以16 wt%的浓度掺杂,器件的最大的发光效率为0.25cd/A;最大的功率效率为0.14l m/w。     

含芴功能材料的研究与应用

从芴的结构特点出发,讨论了芴的基本性质,包括化学结构特征、酸性与反应活性、热稳定性、光谱特征;综述了含芴结构的重要有机中间体,如芴酮、芴甲醇的化学特性与应用;综述了含芴结构的高分子材料改性单体,如双酚芴、9,9-双(3-氨基-4-羟苯基)芴等,以及它们在各种材料改性中的应用;介绍了含芴结构化合物在感光与光导材料领域的应用,如9,9-二烷基芴、芴-三苯胺结构化合物、芴-偶氮结构化合物;介绍了含芴结构的电致发光材料,如聚烷基芴、芴-噻吩共聚物、芴-噁二唑共聚物等;还介绍了含芴结构的医药与农药,如苯芴醇和含芴结构的植物生长激素;另外还介绍了用于催化剂领域的含芴功能化合物。     

2,7-二溴-9-亚(α-萘胺)基芴的合成

以芴为原料,合成了一种用于制备发光材料的中间体标题化合物.所得产物的结构经红外光谱、核磁共振谱、UV-Vis和质谱表征.     

稀土有机电致发光材料

有机电致发光 (OEL)是目前国际上一个热点研究课题 ,稀土配合物发光的色纯度高 ,作为OEL材料具有独特的意义。本文介绍了稀土OEL材料的发光机理 ;讨论了稀土OEL材料的结构(包括配体、第二配体和中心离子 )对其发光特性的影响 ,以及材料的电致发光性能与光致发光性能的关系。     

1,4-二[2-(吡啶基)-1,3,4-(噁)二唑基]苯的合成及其光谱性质

利用双二酰肼的脱水化反应制备了两种新颖对称双二噁唑。通过IR、1HNMR、MS及元素分析等对化合物的结构进行表征。研究了此双噁二唑化合物在溶剂DMF中浓度为1×10-7mol/L时的紫外光谱和荧光光谱性质。结果表明:目标化合物在DMF溶液的最大紫外吸收波长在310 nm,最大荧光发射波长在364和383 nm。     

草酸共沉淀法制备的Y2O3:Eu2+发光性能

采用草酸共沉淀法,利用草酸盐的自氧化还原,制得了以Y2O3为基质及Eu2 为发光中心的荧光粉Y2O3:Eu2 .该法煅烧温度低、操作简单,不需要外界置入任何还原性物质,可将高价阳离子Eu3 还原为Eu2 ,降低了反应的危险性和生产成本.对Y2O3:Eu2 的荧光性质进行了表征,并进一步探讨了Eu2 荧光发射主峰产生较大红移现象的原因,以及发光强度与煅烧温度和Eu2 含量的关系.     

Preparation and Enhanced Luminescence of Au Nanoparticles Including SiO2:Tb3+ Three‐Dimensional Ordered Macroporous Films

Novel photoluminescent films consisting of three‐dimensionally ordered macroporous (3DOM) SiO₂:Tb³⁺ and Au nanoparticles were prepared by template assisted method, and their luminescence properties were investigated. The results show that Au nanoparticles have significant influence on luminescence property of SiO₂:Tb³⁺ 3DOM materials. The Au nanoparticles embedded in the skeleton of SiO₂:Tb³⁺ 3DOM materials could strongly improve their luminescence properties. The enhancement mechanism was discussed and demonstrated, which is attributed to the increasing of radiative decay rates of Tb³⁺ induced by surface plasmon effects of Au nanoparticles.     

Assembly of Polyoxometalate-Based Composite Materials

This paper is a review the polyoxometalate-based composite materials, including polyoxometalate incorporated Langmuir and Langmuir–Blodgett, layer-by-layer multilayers and novel honeycomb films, self-assembly structures of modified polyoxometalate complexes (e.g., onion-like structures, new inorganic–organic–inorganic vesicles, thermotropic and lyotropic liquid crystalline structures, gels), and amino acid- and protein-polyoxometalate nanorods and nanoparticles. Polyoxometalate-embedded layer-by-layer multilayer films show electrocatalytic or photochemical activity; and, novel photoluminescent honeycomb films templated by microwater droplets are reviewed. Inorganic–organic–inorganic hybrid vesicles display the potential as nano-switches. In addition, amino acid- and protein-polyoxometalate composite nanostructures indicate potential antimicrobial applications. Therefore, the polyoxometalate-based composite materials have promising applications in electrochemistry, photochemistry and biomedicine.     

Eu-Phen-AA-MMA共聚物的合成及性能

用先络合再聚合和先聚合再络合的方法,合成了稀土高分子铕(Eu)-邻菲罗啉(Phen)-丙烯酸(AA)-甲基丙烯酸甲酯(MMA)。用红外光谱和X射线衍射测试方法对其结构和物相进行了分析,表明铕与高分子基质发生配位。比较二者的荧光性质,发现得到的配位聚合物是一种良好的光致发光材料,在紫外光下发出亮度和单色性高的特征红色荧光,但当配位聚合物中铕离子(Eu3+)的质量分数达1.97%时,第二种方法合成的聚合物发生浓度猝灭现象。     

Spider Silk Inspired Robust and Photoluminescent Soybean-Protein-Based Materials

Development of mechanical robust and functional biomass-based materials still remains challenging. Here, a design strategy inspired by spider silk structure is proposed to prepare strong, robust, and photoluminescent soybean protein isolate (SPI)-based materials, by integrating epoxy soybean oil (ESO) and SPI as soft phase matrices and graphene oxide quantum dots (GQDs) as hard phase. The results show that the soft–hard coordination network can form a close covalent/hydrogen bond network. The tensile strength, elongation at break, and toughness of the SPI/ESO/GQD film are 13.22 MPa, 209%, and 22.54 MJ m⁻³, respectively. In addition, SPI/ESO/GQD has strong photoluminescence intensity due to the ring-opening polymerization of amino structure with epoxy resin. The prepared SPI-based materials are promising candidates for optical coatings and provide new ideas for the intelligent research of other protein-based materials.     

Photoluminescent Polymer Composites Based on New Tb(III) and Eu(III): Maleimide Complexes

The paper reports the preparation of two photoluminescent polymer composites by embedding two newly prepared Tb(III) and Eu(III) complexes into poly(4-styrenesulfonic acid) matrices using maleimide as ligand. In the first step, the photoluminescent complexes were prepared at 1:3 metal-to-ligand ratio. Prior to the embedment into the polymer matrix the complexes were investigated by chemical and thermal analysis, FT-IR, powder X-ray diffraction and fluorescence spectroscopy. The prepared composites preserve the photoluminescent properties of the complexes and provide them with long-term stability. Thin films of the composites were spin–coated on glass slides and investigated by SEM and AFM techniques. The remarkable photoluminescent properties of the composites prepared in bulk or deposited in thin films on various substrates recommend them for applications in optical devices as photonic conversion mediums.     

Preparation of luminescent polyethylene plastic composite nano-reinforced with glass fibers

Electrospun glass nanofibers (EGNFs) were prepared to reinforce polyethylene (PE) plastic waste towards the development of photochromic anti-counterfeiting patterns and long-persistent photoluminescent materials, such as smart windows and concrete. By physical integration of lanthanide-doped aluminate (LdA) nanoparticles (NPs) into polyethylene plastic reinforced with EGNFs, a transparent lanthanide-doped aluminate nanoparticles (LdANPs)/EGNFs@PE sheet was produced. The colorless EGNFs@PE hybrids became green under ultraviolet (UV) rays and greenish-yellow in a darkened room as proved by CIE Lab and photoluminescence analysis. In the luminescent LdANPs/EGNFs@PE hybrids, the identified photochromism was promptly reversed at low concentrations of LdANPs to designate fluorescence emission. Photoluminescence was maintained with slow reversibility for the high phosphor concentrations to designate afterglow emission. LdANPs exhibit diameters of 5–12 nm, whereas glass nanofibers have diameters of 70–120 nm. The morphologies of LdANPs/EGNFs@PE substrates were studied by energy-dispersive x-ray spectroscopy (EDX), scanning electron microscopy (SEM), and x-ray fluorescence (XRF). The mechanical properties of the prepared polyethylene plastic were enhanced by reinforcement with glass nanofibers as a roughening agent. The photoluminescent substrates showed markedly improved scratch resistance in comparison to LdANPs-free EGNFs@PE substrate. The obtained luminescence spectra displayed an emission band at 519 nm upon excitation at 365 nm. The results demonstrated that the luminous plastic has improved hydrophobicity and UV shielding upon increasing the LdANPs content.     

一种新型稀土高分子光致发光材料的制备

合成了丙烯酸 -甲基丙烯酸甲酯的共聚物 ,然后将铕离子络合到此共聚物上去 ,将反应产物掺杂到丙烯腈 -丁二烯 -苯乙烯三元共聚物和聚甲基丙烯酸甲酯基体中 ,考察了该体系的力学性能、荧光性质以及体系的微观结构。研究表明 ,加入此共聚物后体系的拉伸性能改变不大 ,但冲击强度明显下降。荧光光谱表明 ,得到的配位聚合物是一种良好的发光材料 ,在紫外光下发出高亮度、单色性的特征红光。