甲基取代三苯胺类化合物的合成

以氯化亚铜、1,10-邻菲咯啉为催化剂,二苯胺及其衍生物与对碘甲苯经U llm ann反应合成了4-甲基三苯胺(MTPA)、4,4′-二甲基三苯胺(DMTPA)和4,4,′4″-三甲基三苯胺(TMTPA),收率分别达到了94.61%、94.76%和94.93%,产物的HPLC纯度都高于99.50%,并用红外光谱、元素分析及质谱对产物结构和组成进行了鉴定。     

二苯胺和碘苯反应合成三苯胺

在氮气保护下,以二苯胺为原料,加入碘苯、铜类催化剂、碱及有机溶剂进行反应,合成三苯胺类化合物。考察了不同的碱、不同有机溶剂及反应时间对反应的影响。结果表明,在铜类催化剂作用下,选用氢化钠作碱,二甲苯为溶剂,反应16～18h,二苯胺和碘苯反应合成三苯胺可以得到良好的产率。     

一种新型三苯胺类空穴传输材料的合成与性能研究

以2,7-二碘-9,9-二甲基芴为原料分别经过Buchwald-Hartwig交叉偶联反应、Ullmann反应,对目标化合物9,9-二甲基N2,N7二苯基N2,N7二-对甲苯基-9H-芴-2,7-二胺（d-TPA）进行合成研究。通过¹H NMR、¹³C NMR以及HRMS-ESI等表征方法确定结构的正确性。研究表明：以铜粉为催化剂的Ullmann反应收率为85%,是最高效的合成方法。通过X射线衍射（XRD）测试和循环伏安法（CV）测试,结果表明：该材料为非晶材料,成膜性较好,且目标化合物的HOMO轨道能级值为-5.23 eV,与常用阳极材料ITO功函相近且化学稳定性较好,有利于空穴由阳极向空穴传输层的注入。将目标化合物用作空穴传输材料制备了有机发光二级管（OLED）并进行性能测试表征,结果显示：所得器件的启亮电压为3.8 V,最大发光亮度为21 412 cd/m²,最大电流效率为4.78 cd/A,表明该化合物有望成为一种性能优异的新型空穴传输材料。     

4-甲氧基-N-苯基-N-(4-(2,2-二苯乙烯基)苯基)苯胺的合成

在氮气保护下,以二苯胺、对碘苯甲醚和二苯基氯甲烷为原料,经过Ullmann反应、Vilsmeier-Haack反应和Wittig反应,合成了电荷传输材料4-甲氧基-N-苯基-N-(4-(2,2-二苯乙烯基)苯基)苯胺,收率达到20.1%,通过熔点、红外光谱、核磁共振谱等手段确证了所合成化合物的结构。该合成工艺具有反应温度低,反应时间短,制备简单的优点,并优化了反应条件。并用紫外光谱、荧光光谱测试了其光谱性质。     

2,4,6—三溴苯胺的合成

通过选用合适的催化剂ＭｇＢｒ２,用Ｂｒ２的ＨＢｒ水溶液溴化苯胺氢溴酸盐水溶液,一步制得９９％以上纯度的２,４,６－三溴苯胺,收率９８％左右。     

2种三苯胺衍生物的合成与生物成像研究

本文通过缩合反应,合成了2种三苯胺衍生物TP-NH和TP-NO,使用HNHR、ESI-MS进行了结构表征,通过对比2种化合物在不同极性溶剂中的紫外吸收光谱和荧光发射光谱,对其光学性质进行了分析,研究了2种化合物的聚集诱导荧光增强特性。通过扫描电子显微镜,观察了2个化合物在不同溶剂中的形貌特征。发光较好的TP-NH已成功应用于肿瘤细胞和斑马鱼荧光染色。研究结果表明,2种三苯胺衍生物都具有较好的光学和细胞成像应用前景。     

邻三氟甲基苯胺的合成

以邻甲基苯胺为起始原料,先与双（三氯甲基）碳酸酯反应制得邻甲基苯基异氰酸酯,然后在过氧化物催化下侧链氯化得邻三氯甲基苯基异氰酸酯,最后在无水氟化氢中同时进行氟化和溶解得邻三氟甲基苯胺,三步总收率为55.3%,产品纯度在99%以上.此路线原料易得、操作安全、分离简单、产品纯度高,是一条可行的工业化路线.     

对三氟甲氧基苯胺的合成及应用

详细介绍了对三氟甲氧基苯胺的合成和应用。     

微波辐射合成4-甲基三苯胺

以氢氧化钾（4）为缚酸剂,在微波辐射条件下．二苯胺（1）和对碘甲苯（2）在二甲亚砜中反应合成了4-甲基三苯胺。其结构经^1HNMR和IR表征。由正交实验确定最佳工艺条件为：125mmol。n（1）：n（2）：n（3）=1：2：4,微波功率250W,于145℃反应45min,收率84．4％．     

Synthesis and characterizations of a polyimide containing a triphenylamine derivative as an interlayer in polymer light-emitting diode

Polyimide containing triphenylamine derivative (TPD-PI) was synthesized to prepare a polymer interlayer having insolubility in common nonpolar solvent for light-emitting polymers. N,N′-diphenyl-N,N′-bis(4-aminophenyl)-1,1-biphenyl-4,4′-diamine, as a new triphenylamine-containing diamine monomer, was synthesized by the palladium-catalyzed amination reaction between 4-nitrodiphenylamine and 4,4′-dibromobiphenyl and subsequent reduction of the nitro-intermediate. The TPD-PI was prepared from the synthesized diamine monomer and 4,4′-(hexafluoropropylidene)-diphthalic anhydride by the standard two-step polymerization method, which involved ring-opening polymerization and subsequent cyclodehydration. The structures and properties of the monomer and the resulting polyimide were characterized with ¹H and ¹³C NMR, elemental analysis, gel permeation chromatography, UV-visible spectroscopy, etc. The TPD-PI is readily soluble in aprotic polar solvents such as N-methyl-2-pyrrolidinone and N,N-dimethylformamide and insoluble in nonpolar solvents such as toluene and xylene. The highest occupied molecular orbital (HOMO) level of the TPD-PI was measured to be 5.5 eV by a photoelectron spectrometer in air, and the band gap was calculated as 3.1 eV from the onset of UV-vis spectrum. The polymer light-emitting diode with the thin TPD-PI layer between a hole injection layer and an emitting polymer layer was fabricated to examine the performance of the polyimide as an polymer interlayer. Although the luminous efficiency of the device is lowered by the introduction of the TPD-PI interlayer, the lifetime of the device is improved.     

联苯双酯合成中Ullmann反应催化剂的研究

对联苯双酯的合成工艺进行了研究,针对最后一步Ullmann反应催化剂铜粉的活化进行了大量的探索,希望能提高铜粉的活性,缩短Ullmann反应时间,进一步减低成本.以没食子酸为原料,经酯化、单甲醚化、邻双羟基的次甲二氧基化、溴化和Ullmann反应,共五步反应制得联苯双酯,总收率为30.2％,TLC显示纯度较好,并经TLC和IR确证结构正确.     

Synthesis and electrochromic properties of aromatic polyimides bearing pendent triphenylamine units

A series of aromatic polyimides with pendent triphenylamine group were synthesized from equimolar mixtures of 4,4′-oxydianiline (ODA) and 4-(3,5-diaminobenzamido)triphenylamine (4), 4-(3,5-diaminobenzamido)-4′,4″-di-tert-butyltriphenylamine (t-Bu-4) or 4-(3,5-diaminobenzamido)-4′,4″-dimethoxytriphenylamine (MeO-4) with two aromatic tetracarboxylic dianhydrides (DSDA or 6FDA) via a conventional two-step procedure that included a ring-opening polyaddition to give poly(amic acid)s, followed by chemical imidization. These polyimides exhibited good solubility in polar organic solvents and could be solution-cast into flexible and strong films. They showed excellent thermal stability, with T_g values in the range of 284–309 °C. The polyimides derived from diamines t-Bu-4 and MeO-4 exhibited reversible electrochemical oxidation, accompanied by strong color changes with high contrast ratio and electrochromic stability. For the polyimides derived from diamine 4, the coupling reaction between the triphenylamine radical cations occurred during the oxidative process forming a tetraphenylbenzidine structure, which resulted in an additional oxidation state and color change together with enhanced near-IR absorption at fully oxidized state.     

Synthesis and properties of polyacetylenes carrying N-phenylcarbazole and triphenylamine moieties

Novel acetylene monomers containing N-phenyl-substituted carbazole (Cz) and triphenylamine (TPA) groups, namely, 3-ethynyl-9-phenylcarbazole (1) and p-(N,N-diphenylamino)phenylacetylene (2) were synthesized, and polymerized with several Rh-, W-, and Mo-based catalysts. Poly(1) and poly(2) with high number-average molecular weights (15?500-974?000) were obtained in good yields (77-97%), when [(nbd)RhCl]₂-Et₃N (nbd = norbornadiene) was used as a catalyst. The polymers exhibited UV-vis absorption peaks derived from the Cz and TPA moieties at 250-350 nm and polyacetylene backbone above 350 nm. The UV-vis absorption band edge wavelengths of the polymers were longer than those of the corresponding monomers. Poly(2) exhibited a UV-vis absorption peak at a longer wavelength than poly(1) did, which indicates that poly(2) has main chain conjugation longer than that of poly(1). The molecular weights and photoluminescence quantum yields of the polymers obtained by the polymerization using [(nbd)RhCl]₂-Et₃N were larger than those of the Rh⁺(nbd)[η⁶-C₆H₅B⁻(C₆H₅)₃]-based counterparts. The cyclic voltammograms of the polymers indicated that they had clear electrochemical properties; the onset oxidation voltage of poly(1) was higher than those of N-alkyl-substituted Cz derivatives. The polymers showed electrochromism and changed the color from pale yellow to blue by application of voltage, presumably caused by the formation of charged polaron at the Cz and TPA moieties. The temperatures for 5% weight loss of the polymers were around 350-420 °C under air, indicating the high thermal stability.     

Synthesis, optical and electrochemical properties of new hyperbranched poly(triphenylamine amide)s

A new triphenylamine-containing AB₂ type monomer with one carboxylic acid and two amino groups, 4-(bis(4-aminophenyl)amino)benzoic acid (3), was synthesized and used for the preparation of hyperbranched poly(triphenylamine amide)s. The self-polycondensation of the AB₂ monomer (3) afforded hyperbranched poly(triphenylamine amide) with amino end groups. The molecular weight of the hyperbranched poly(triphenylamine amide) was 21,000 Da determined by light scattering. End-capped hyperbranched polyamides were isolated by the chemical modification of unreacted amino groups with various acid chlorides. All the hyperbranched poly(triphenylamine amide)s exhibit excellent solubility in organic solvents such as NMP, DMF, DMSO, and DMAc at room temperature. The viscosities of hyperbranched poly(triphenylamine amide)s are as low as about 0.15 dL/g due to their dendritic structures. Poly(triphenylamine amide)s end-capped with rigid benzene ring have higher thermal stability than those with amino or aliphatic end groups. The photoluminescence of the hyperbranched polyamides is blue-yellow emissions around 430-510 nm. The energy gaps of the hyperbranched poly(triphenylamine amide)s with different end groups are about 2.93 eV and are independent on the end groups, but the HOMO and LUMO energy levels are dependent on the end groups.     

电荷传输材料1-(4-甲氧基)苯基-2-[4′-(4″-甲氧基)三苯胺基]-乙烯的合成

在氮气保护下,以二苯胺、对碘苯甲醚和对甲氧基氯苄为原料,经过改良的Ullmann反应、Vilsmeier-Haack反应和Wittig反应,最终合成了电荷传输材料1-(4-甲氧基)苯基-2-[4′-(4″-甲氧基)三苯胺基]-乙烯,并优化了反应条件。该合成工艺具有反应温度低、反应时间短、操作简单的优点。     

Two-photon absorption properties of hyperbranched conjugated polymers with triphenylamine as the core

Two new hyperbranched phenylene vinylenes (HPVs) with triphenylamine as the core, 2,5-dihexyloxyl substituted phenylene vinylene as the connecting unit, and electron-donating triphenylamine or electron-deficient nitrobenzene as the different terminal groups were synthesized by modified Wittig polymerization reaction. Their one- and two-photon absorption (TPA) properties have been investigated. The two-photon absorption cross sections of the two polymers were performed by open-aperture Z-scan experiment using 120 femtosecond (fs) pulse, and their TPA cross section were determined to be 1.43 and 0.64×10⁻²⁰ cm⁴/GW per repeating unit at 800 nm, respectively. In chloroform, HPVs exhibit intense frequency up-converted fluorescence under the excitation of 120 fs pulses at 800 nm with the peaks located at 544 and 554 nm, respectively.     

DNA-lipid complexes carrying carbazole and triphenylamine moieties: Synthesis, and chiroptical and photoelectronic properties

Novel DNA-lipid complexes carrying carbazole and triphenylamine moieties were prepared by substituting the sodium counter cation with cationic amphiphilic lipids, namely lipid(Cz) and lipid(TPA), in which the actual mole ratios of phosphate to lipid were 1:1.10 and 1:0.83, respectively. The DNA-lipid(Cz) and DNA-lipid(TPA) complexes were soluble in common organic solvents including CHCl₃, CH₂Cl₂, methanol and ethanol, while insoluble in THF, toluene, and aqueous solutions. CD spectroscopy revealed that the DNA-lipid complexes took a predominantly double helical structure in CHCl₃ and methanol and that the helical structure was fairly stable against heating. Solutions of DNA-lipid(Cz) and DNA-lipid(TPA) complexes emitted fluorescence in 5.7 and 76.4% quantum yields, which were higher than those of the corresponding lipid(Cz) and lipid(TPA) (4.4 and 55.3%). The cyclic voltammograms of the complexes indicated that the oxidation potentials of DNA-lipid(Cz) and DNA-lipid(TPA) were 0.95 and 0.85 V, respectively. The onset temperatures of weight loss of the DNA-lipid complexes were both 220 °C according to TGA in air.     

Development of structural characterization and physicochemical behaviour of triphenylamine blocks

A novel multitriphenylamine substituted derivatives, possessing the respective photochromic groups were synthesized by Stille cross-coupling methodology. The hyperbranched structures have been characterized by ¹H NMR, ¹³C NMR. Obtained structures show good stability in common organic solvents such as CHCl₃, toluene and CH₂Cl₂ and exhibit excellent thermal stability. Electrochemical results and theoretical calculation suggest that oxidation and reduction start from the side of amine and branching five member heterocycle ring moieties, respectively.