新型红色磷光铱（Ⅲ）配合物的合成及表征

以2-（2’-苯并噻吩基）吡啶（btp）、对乙烯基苯甲酸（VBA）为原料,通过与水合三氯化铱（IrCl3·3H2O）配合,得到了一种新型铱（Ⅲ）配合物Ir（btp）2（VBA）,通过元素分析、FT—IR光谱及^1HNMR谱对其进行了结构表征,并研究了其UV—Vis吸收光谱和光致发光光谱。结果表明,配合物在403和462nm处存在单重态和三重态的吸收峰,在630nm处有较强的金属配合物三重态的磷光发射峰,是一种新型红色磷光材料。     

溴化1-十六烷基-3-乙烯基咪唑型离子液体的制备及聚合性研究

以N-乙烯基咪唑、溴代十六烷为原料,经亲核取代反应合成溴化1-十六烷基-3-乙烯基咪唑([HDVIM]Br)离子液体。并以该离子液体为单体,偶氮二异丁腈(AIBN)为引发剂,制备聚离子液体p[HDVIM]Br。采用红外光谱(FTIR)、核磁共振仪(¹H NMR)和元素分析、凝胶色谱仪(GPC)、热重分析仪(TGA)、X-射线衍射仪(XRD)及电导率对其进行结构与性能测试与分析。结果表明,[HDVIM]Br具有可聚性,且为无定形非晶结构。[HDVIM]Br的电导率随温度升高逐渐增大,随着浓度增加而增加;溴化1-十六烷基-3-乙烯基咪唑离子液体聚合物p([HDVIM]Br)的数均分子量为3.68×101H NMR)和元素分析、凝胶色谱仪(GPC)、热重分析仪(TGA)、X-射线衍射仪(XRD)及电导率对其进行结构与性能测试与分析。结果表明,[HDVIM]Br具有可聚性,且为无定形非晶结构。[HDVIM]Br的电导率随温度升高逐渐增大,随着浓度增加而增加;溴化1-十六烷基-3-乙烯基咪唑离子液体聚合物p([HDVIM]Br)的数均分子量为3.68×10⁴ g/mol。     

溴化1-十六烷基-3-乙烯基咪唑型离子液体的制备及聚合性研究

以N-乙烯基咪唑、溴代十六烷为原料,经亲核取代反应合成溴化1-十六烷基-3-乙烯基咪唑([HDVIM]Br)离子液体。并以该离子液体为单体,偶氮二异丁腈(AIBN)为引发剂,制备聚离子液体p[HDVIM]Br。采用红外光谱(FTIR)、核磁共振仪(~1H NMR)和元素分析、凝胶色谱仪(GPC)、热重分析仪(TGA)、X-射线衍射仪(XRD)及电导率对其进行结构与性能测试与分析。结果表明,[HDVIM]Br具有可聚性,且为无定形非晶结构。[HDVIM]Br的电导率随温度升高逐渐增大,随着浓度增加而增加;溴化1-十六烷基-3-乙烯基咪唑离子液体聚合物p([HDVIM]Br)的数均分子量为3.68×10~4 g/mol。     

铱配合物磷光探针的合成及细胞荧光成像

磷光铱配合物具有良好的光热稳定性、发光颜色可调性、较长的激发寿命和较高的发光效率等特点。以2-苯基并噻唑衍生物(含有醛基、乙氧基和叔丁基)为主配体、1,10-邻菲罗啉为辅助配体,合成3个磷光铱配合物。通过核磁共振谱和高分辨质谱对其结构进行表征,利用荧光光谱和紫外-可见吸收光谱对其发光性能进行研究,并测试了磷光铱配合物的细胞荧光成像作用。     

橙红色磷光铱(Ⅲ)配合物的合成及表征

以二苯基吡啶(ppy)和2,2'-联吡啶-4,4'-二羧酸(H2dcppy)为配体,与水合三氯化铱(IrCl3·3H2O)配位,我们合成了一种结构新颖的具有橙红色磷光发射的金属铱配合物Ir(PPY)2(H2dcppy)PF6,其结构通过FT-IR光谱和核磁共振氢谱得到了确认.紫外吸收光谱和荧光光谱表明,该配合物具有明显...     

含苯磷苯并噁嗪的合成与表征

以含磷中间体(BPPP)、苯胺和甲醛溶液为原料合成了一种新型含苯磷苯并噁嗪单体,通过H谱(1H-NMR)和傅里叶红外光谱(FT-IR)对其化学结构进行了表征,利用差示扫描量热仪和热重分析仪分别研究了其热固化行为及聚合物的热稳定性.结果表明:含苯磷苯并噁嗪的固化过程从135℃开始放热,到261℃放热结束,固化峰值温度为226.5℃;含苯磷苯并噁嗪在不添加任何催化剂的情况下能完全聚合,而且该聚合物具有很好的热稳定性.     

聚咔唑磷光主体材料的合成与性能研究

聚合物主体材料由于具有易加工,成本低等优点,对于实现高性能的蓝光和白色旋涂器件有重要意义,因而备受关注。本文通过Yamamoto反应合成了一种建立在四苯基硅上的聚咔唑类主体材料P1CzSi,合成的比例咔唑对四苯基硅为95:1。采用FT-IR,GPC等对聚合物结构进行表征,其重均分子量为7.3x103,分子量分布为1.17。利用UV-Vis,PL和CV等研究了聚合物的光学和电化学性能,结果表明,聚合物的荧光最大发射峰位于417nm处,不仅发深蓝色光,而且具有宽的能带隙(3.40 eV),是一种理想的磷光聚合物主体材料。     

阻燃纤维和阻燃长丝及其生产工艺

提供了由包括以下物质的成分形成的纤维或长丝：至少一种成纤热塑性聚合物以及至少一种多溴化阴离子型苯乙烯类聚合物。多溴化阴离子型苯乙烯类聚合物具有至少约质量分数50％的溴含量以及在约5000-40000范围内的GPC重均分子量或至少约600000的GPC重均分子量。     

新型可降解聚富马酸硅基酯的合成与表征

以富马酸二叔丁基酯和2,2-双(p-二甲基-氯硅氧基苯)丙烷为单体,通过缩聚合成得到聚[富马酸-2,2-双(p-二甲基硅氧烷-苯基)丙烷硅基酯],采用核磁共振氢谱、差示扫描量热法、热失重分析和凝胶渗透色谱表征了聚合物.结果表明,该聚合物的重均分子量为6 912,聚合度为15.6,玻璃化转变温度为16.7℃,具有良好的热...     

含荧光素功能基丙烯酸酯共聚物的合成与表征

以N,N-二环己基碳酰亚胺(DCC)和4-二甲氨基吡啶(DMAP)为酯化反应的催化剂,使丙烯酸酯共聚物(CPA)和荧光素进行酯化反应,得到一种新型荧光聚合物(F-CPA)。通过傅里叶红外光谱(FT-IR)、差示扫描量热法(DSC)、凝胶色谱法(GPC)、热失重分析(TG)、紫外可见光谱(UV-Vis)和荧光光谱(PL)对F-CPA进行了表征。     

乙苯,苯乙烯的生产及合成乙苯,苯乙烯催化剂的研究进展

苯乙烯是重要的石油化工原料。本文介绍了国内外苯乙烯生产的发展概况，合成乙苯，苯乙烯所用的催化剂种类，并就苯乙烯生产及催化剂的发展趋势提出了自己的观点。     

Synthesis and characterization of homopolymers and copolymers of various acrylates and acrylonitrile

Various homopolymers and copolymers of methyl acrylate, ethyl acrylate, butyl acrylate, and acrylonitrile in different feed ratios were synthesized. These were characterized by IR, ¹³C-NMR, DSC, DTA, and TGA. Spectroscopic characterization helped in differentiating copolymers of different mol ratios. Thermal analysis revealed different degradation patterns for homopolymers and copolymers. The temperature and energy changes associated with various phase transitions were dependent on the chemical composition of homo- and copolymers, as expected. © 1993 John Wiley & Sons, Inc.     

Comparison of the Adhesion and Cohesion of Triblock and Random Copolymers of Styrene and Butadiene

A substantially greater detachment energy is required to strip a polyethylene tereph-thalate (Mylar) film from a styrene-butadiene-styrene (SBS) triblock copolymer compared to that for peeling from a random styrene-butadiene (SBR) copolymer. This is true even though the intrinsic interaction between the Mylar and each elastomer is expected to be similar because of their virtually identical chemical composition. It is proposed that this difference in peel strength (between the SBS and SBR) is a consequence of the much higher dissipative capacity of the former elastomer. Another manifestation of this is the higher cohesive tear strength of the SBS compared to the SBR. Extents of energy dissipation within each elastomer during detachment of the Mylar adherend are consistent with the hypothesis that the average maximum stress experience before detachment is some similar fraction of each elastomer's tensile strength.     

Electronic structures and reactivities of monometallic and bimetallic clusters of Au and Cu

The variation of the Au 4f binding energy of Au clusters with the cluster size has been established by measuring the binding energies of clusters whose size distributions were independently determined by HREM and STM. The binding energy increases significantly when the cluster size is less than 2 nm. Au-Cu bimetallic clusters of the composition Cu₃Au have been deposited for the first time on carbon substrates. The shifts in the core level binding energies of the bimetallic clusters show the effect of alloying in the case of large clusters, but show effects of both alloying and cluster size in the case of the small clusters. The interaction of CO with Cu₃Au clusters is stronger than with a bulk Cu metal. The interaction of CO with small Cu clusters also seems to be stronger than with bulk Cu or with large Cu clusters.     

钾盐资源及钾肥供需情况分析及预测

阐述了国内外钾盐资源及钾肥生产现状,对国内外钾盐的供需形势进行了分析及预测,从资源、原材料、国际市场三方面提出了解决我国钾盐短缺的措施。     

医药和农药纳米剂型研究和应用

系统介绍了医药和农药纳米剂型研究进展和应用前景。医药微乳剂和纳米悬浮剂可显著改善药物的悬浮性和分散性,提高生物利用度。载药纳米微粒具有缓释功能,延长药物在体内的半衰期,并可实现药物的靶向定位给药。农药微乳剂具有增溶和渗透作用,提高农药的传递效率和使用安全性。农药纳米悬浮剂和载药纳米粒均可显著提高药效。纳米技术为医药和农药剂型的研究提供了新机遇,具有广阔的应用前景。     

生物质气化及生物质与煤共气化技术的研发与应用

总结了生物质原料的特点及生物质单独气化的缺点;介绍了国内外生物质气化技术及生物质与煤共气化技术的研发与应用现状;分析了在此领域国内外的发展趋势与前景;概括了开展生物质与煤共气化技术研发的意义。     

Wetting properties of homopolymers and copolymers of pentafluorostyrene and methylacrylate and homopolymer blends

Polypentafluorostyrene (PPFS), polymethylacrylate (PMA), and poly(pentafluorostyrene-co-methylacrylate), poly(PFS-co-MA) were prepared and the wetting characteristics of polymer blends of PPFS and PMA were compared with that of poly(PFS-co-MA) via contact angle measurements. The critical surface tension of polypentafluorostyrene was found to be 22.6 dyne/cm, which is comparable to the value reported for polytrifluoroethylene (22 dyne/cm). The critical surface tension of poly(PFS-co-MA) is not linearly related to its composition. The polymer blends of PPFS and PMA exhibit significant surface enrichment of the fluoropolymer. The harmonic-mean method¹ was employed to determine surface tensions of these polymers and many known polymers. It is found that the method produces useful surface tension data provided the contact angle values are derived from testing liquids of dissimilar polarity.     

甘油锌和光稳定剂NBC、BZ的光稳定作用测试与评价

对用甘油锌作光稳定剂的光稳定作用进行了测试，并与光稳定剂NBC，BZ进行了比较。研究了甘油锌，NBC和BZ与双酚A的复配效果。研究结果表明，甘油锌是一种性能优良的光稳定剂。