TiCl4—C60Cln催化体系引发异丁烯正离子聚合

研究了碳笼烯非质子酸经体系引发异丁烯正离子聚合的反应规律,并与ＴｉＣｌ４正离子催体系进行了比较。ＧＰＣ的测试结果表明,ＴｉＣｌ４－Ｃ６０Ｃｌｎ催化体系中可能存在２种活性中心：（１）体系中的微量水与ＴｉＣｌ４配位形成的质子引发体系;（２）（ＴｉＣｌ５）－（Ｃ６０Ｃｌｎ－１）＾＋离子引对引发活性中心。     

用TiCl_4／MgCl_2－Al（i－Bu）_3合成反－1，4－聚异戊二烯

研究了负载型钛催化剂ＴｉＣｌ_４／ＭｇＣｌ_２－Ａｌ（ｉ－Ｂｕ）_３体系合成反－１，４－聚异戊二烯的基本规律。结果表明，最适宜的聚合条件为：６０℃，Ａｌ／Ｔｉ＝１０（摩尔比），Ｔｉ／Ｉｐ＝２×１０￣（－４）（摩尔比），加料顺序为汽油－Ａｌ－Ｔｉ－Ｉｐ。预聚合可有效地提高催化剂效率，而对聚合物的分子量影响不大。     

新型含富勒烯的功能材料的研制和光物理研究（下）

４．１．３Ｃ６０、Ｃ７０及其衍生物、共聚物和组合材料的激光烧蚀行为 研究的主要样品为Ｃ６０（Ｃ４Ｈ５ＣＨ２）ｎ、Ｃ６０（Ｃ９Ｈ７）ｎ、Ｃ６０（ＣＣｌ２）ｘ等Ｃ６０加合物，Ｃ６０－ＰＶＫ（聚乙烯　唑）等Ｃ６０高分子共聚物以及Ｃ６０／二氧化硅气凝胶。主要结果如下： （１）研究发现富勒烯材料在激光辐照下在负离子通道中有独特的动力学行为。通过对Ｃ６０及其衍生物正负离子质谱的分析，探讨了在负离子通道中碳笼的解离、俘获小碳簇的生长、增强融合及奇数高碳团簇的形成及其机理。发现碳笼团簇正负离子的解离通道不同，衍生…     

苯乙苯／α—蒎烯嵌段共聚物的合成

考察了一种用大分子引发剂制备七乙烯／α－蒎烯嵌段共取物（ＰＳｔ－ｂ－Ｐα－Ｐ０的方法，其中大分子引发剂为末端含α－Ｃｌ的聚苯乙烯，由生阳郭子聚合剂制备。首选考察了α－氯代乙苯／ＳｎＣｌ４体系的α－蒎烯聚合，进而了不同条件下的ＰＳｔ－α－Ｃｌ／ＳｎＣｌ４Ｌｅ３ｗｉｓ碱）体系的α－蒎烯聚合。产物经ＧＰＣ、ＩＲ、ＨＮＭＲ等分析确定。方法可以在不同相对分子质量的聚苯乙烯嵌段上接枝聚α－蒎烯嵌段。     

SO^2—4／TiO2—Al2O3—SnO2催化合成邻苯二甲酸二辛酯（DOP）的研究

采用ＳＯ６２－４－ＴｉＯ２－Ａｌ２Ｏ３－ＳｎＯ２催化合成ＤＯＰ，并对不同条件下制得的催化剂和不同反应条件对催化反应的影响进行了考察。     

SO_4~(2-)/TiO_2-Al_2O_3-SnO_2催化合成邻苯二甲酸二辛酯(DOP)的研究

采用ＳＯ２－４／ＴｉＯ２－Ａｌ２Ｏ３－ＳｎＯ２催化合成ＤＯＰ，并对不同条件下制得的催化剂和不同反应条件对催化反应的影响进行了考察     

球碳衍生物在钕系催化剂催化丁二烯聚合中的应用——催化剂的相态

在Ｎｄ（ｎａｐｈ）３－Ａｌ（ｉ－Ｂ３）３－Ａｌ（ｉ－Ｂｕ）２Ｃｌ（简称Ｎｄ—Ａｌ－Ｃｌ）三元催化体系中加入球碳衍生物Ｃ６０Ｘｎ（Ｘ为某卤素基因），改善了催化剂的相态稳定性，同时对比考察了几种溶剂对Ｃ６０Ｘｎ的溶解性，发现溶解度都比加氢汽油好，以其催化丁二烯聚合，活性也有所提高。     

硅烷（CH_3）_m（C_6H_5）_nSiCl_（4－m－n）的Rochow合

用高效ＲＳＰ－Ｃｕ_３Ｓｉ合金催化剂，气化的氯苯ＰｈＣｌ与氯甲烷在４００℃同时经过催化剂ＲＳＰ－Ｃｕ_Ｓｉ可制得重要硅烷化试剂（ＣＨ_３）_ｍＰｈ_ｎＳｉＣｌ_（４－ｍ－ｎ）讨论了反应的最佳条件及速度。     

C—B4C—SiC复合材料抗氧化性能的研究

对碳／陶瓷复合材料（Ｃ－Ｂ４Ｃ－ＳｉＣ）的抗氧化性能进行了研究。结果表明：Ｃ－Ｂ４Ｃ－ＳｉＣ复合材料抗氧化性能比碳素材料大大提高，而且烧结助剂对Ｃ－Ｂ４ＣＳｉＣ复合材料的抗氧化性能影响很大。在复合材料中分别加入了Ａｌ，Ａｌ２Ｏ３，Ｎｉ，Ｔｉ，ＴｉＣ，Ｓｉ等不同烧结助剂，发现添加Ｎｉ的材料抗氧化性能最佳，经１０００℃氧化１５ｈ后，氧化度小于０．５％；加入Ｔｉ，Ｓｉ和ＴｉＣ的次之，不加烧结助剂的又次之     

新型高活性催化剂乙烯气相聚合的研究：共聚反应动力学及共聚？…

研究了新型高活性催化剂ＴｉＣｌ４、Ｔｉ（ＯＢｕ）４／ＭｇＣｌ２、ＳｉＯ２、ＺｎＣｌ２／醇／ＡｌＲ３体系催化乙烯和１－丁烯气相共聚反应的规律和动力学。     

Preparation of C60 bonded Poly(N-vinylcarbazole) with C60Cln/CuCl/Bpy catalyst system

Summary C₆₀ bonded poly(N-vinylcarbazole) has been synthesized by C₆₀Cln (the average value of n is 20)/CuCl/2,2'-bipyridine (Bpy) catalyst system and its structure was analyzed by UV-Vis and proton NMR. The polymerization mechanism was proposed proceeding via an atom transfer radical polymerization (ATRP). The photoconducting properties of C₆₀ bonded poly(N-vinylcarbazole) was better than poly(N-vinylcarbazole) initiated by AIBN. Received: 16 October 2001 /Revised version: 8 February 2002/ Accepted: 19 February 2002     

C60／C70分离,提纯技术

评述了近几年来Ｃ６０／Ｃ７０分离提纯技术的发展。指出这一领域的研究意义和发展趋势。     

齐聚噻吩/C60双电缆共聚物的合成及结构表征

可溶性聚噻吩和富勒烯(主要是C60)及其衍生物,是聚合物太阳能电池中被广泛使用的给体和受体材料[1~3],二者之间的相容性和富勒烯的聚集效应是影响光电转换效率的主要因素[4]。本文中,用Suzuki偶联法逐步合成噻吩的齐聚物,并通过氮卡宾反应将富勒烯和齐聚噻吩用共价键键接在一起,得到单一分子量分布的齐聚噻吩/C60共聚物,可实现分子水平的相连续结构。另外,通过1H-NMR、MALDI-ToF MS手段对其结构进行表征,通过循环伏安测试表征噻吩单元和C60在基态并无相互作用,紫外可见吸收光谱表明在300-500nm处有一个明显的吸收带。     

Synthesis of C60‐bonded polystyrene initiated with C60Cln/Ni(naph)2/P(Ph)3

A linear‐shaped polystyrene with C₆₀ core was prepared with a novel initiator system, C₆₀Cl_n (n average value is 20)/Ni(naph)₂/P(Ph)_3, and T_p was 130 °C. The results of gel‐permeation chromatography detected by UV detector and fluorescence spectrum of C₆₀‐PSt demonstrated that C₆₀ was chemically bonded to polystyrene. The linear increasing of molecular weights (M_n,GPC) with conversion indicated that this novel initiator system had some characters of living polymerization. A bathochromic shift was found in the UV–vis spectra curves with increasing concentration of C₆₀‐PSt in THF solution. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 1215–1218, 2005     

On C60 fullerene photopolymerization

C₆₀ photopolymerization has been studied in the solvents CCl₄ , CH₂Cl₂ , cyclohexane and decalin. Irradiation of C₆₀ solutions under nitrogen flow produced C₆₀ photopolymers, the structure of which was studied by electronic and FTIR spectroscopy and found to be comparable to that of C₆₀ photopolymers prepared by solid-state photopolymerization or by C₆₀ piezopolymerization (polymerization under high pressure). The role of oxygen as photopolymerization inhibitor in cyclohexane and in the formation of oxygenated photopolymers in halogenated solvents has been investigated and is discussed. The effect of light wavelength on the photopolymerization has been investigated and is discussed. It was found that for λ>265 nm, CCl₄ is photolysed and plays a role in promoting its photopolymerization, while for λ>300 nm no interference from CCl₄ occurs. © 1999 Society of Chemical Industry     

棒状C60/TiO2纳米复合材料的制备及其光催化性能

以商业TiO2(P25)为原料,通过水热法制备了棒状锐钛矿型TiO2,再利用化学吸附作用将C60与TiO2复合得到棒状C60/TiO2纳米复合材料。采用X射线衍射、场发射扫描电子显微镜、透射电子显微镜、X射线光电子能谱、Raman光谱、紫外可见漫反射光谱对样品进行表征,以罗丹明B(RhB)为探针分子在紫外光下考察了C60/TiO2纳米复合材料的光催化活性。结果表明:少量C60的引入可明显提高棒状TiO2的光催化活性,且1.0%C60/TiO2纳米复合材料的光催化活性最高,优于单纯的棒状TiO2和商业P25,其原因是由于C60具有良好的接受和传导电子性能,降低了TiO2光生电子–空穴的复合机率,进而提高了光催化活性。     

共轭聚合物／C60复合体系及其在光伏打电池中的应用

共轭聚合物／C60复合体系在有机太阳能电池中的应用引起了化学工作者的广泛兴趣。本文介绍了共轭聚合物／C60复合体系的光诱导电子转移，以及近年来该体系在光伏打电池中的研究进展。     

Nanocrystalline diamond synthesized from C60

A bulk sample of nanocrystalline cubic diamond with crystallite sizes of 5–12 nm was synthesised from fullerene C₆₀ at 20(1) GPa and 2000 °C using a multi-anvil apparatus. The new material is at least as hard as single crystal diamond. It was found that nanocrystalline diamond at high temperature and ambient pressure kinetically is more stable with respect to graphitisation than usual diamonds.     

Synthesis of Trinitrophenyl C60 Derivative

Trinitrophenyl C₆₀ derivative was synthesized by allowing C₆₀ to react with trinitrochlorobenzene and sodium azide. This fullerene derivative would first provide a brillant prospect in the energetic materials. The product structure was identified by FD-MS, UV-VIS, IR and ¹³C-NMR.