叶黄素β-环糊精包合增溶效应研究

研究了叶黄素与β-环糊精包合的最佳工艺以及包合物在水中的溶解性能。结果表明,叶黄素与β-环糊精包合的最佳工艺条件为:叶黄素与β-环糊精的质量比为1∶2,包合时间4 h,包合温度35℃。叶黄素经β-环糊精包合后在水中的溶解度增大了97.4倍,增溶效果明显。     

香茅挥发油的β-环糊精包合工艺探索

目的:研究β-环糊精包合香茅挥发油的最佳包合工艺。方法:采用饱和β-环糊精水溶液法制备包合物,紫外分光光度法测定包合物中挥发油含量并考察方法学稳定性,通过正交实验法测得挥发油包封率、包合物收率,再将2个指标综合考察评价包合效果。结果:包合的优选工艺是挥发油与β-环糊精比例为1∶8(mL∶g),包合温度为50℃,包合时间为3 h。结论:此工艺使挥发油固体化,制备工艺稳定性良好,便于制剂和扩大生产。     

薄荷醇稳定性及水溶性的研究

目的:为了提高薄荷醇的稳定性和水溶性.以β-环糊精为包合壁材,制备薄荷醇β-环糊精包合物。方法:采角饱和水溶液法翩备薄荷醇β-环糊精包合物.通过正交试验,确定最佳工艺条件,并用紫外分光光度法分别测定了包合物薄荷醇量,并计算了薄荷醇的包合率。结果:以包合率为指标,确定最佳工艺条件为:表明薄荷醇与β-环糊精的摩尔比为1:1o.反应温度5O℃.反应时间2小时.在此条件下.表面薄荷醇量最低且包合率最大。结论:包合物     

超声微波法制备维生素M-β-环糊精包合物

研究了超声微波法制备维生素M-β-环糊精包合物的最佳工艺条件,以维生素M-β-环糊精包合率为指标,通过单因素（超声功率、超声时间、配料比等）实验和正交实验优化包合工艺参数,紫外分光光度计测定吸光度,根据维生素M包合前后的吸光度来计算包合率。单因素实验结果表明：在25℃,维生素M的量为0．02g时,进行超声波辅助-β-环糊精包合维生素M,超声最佳时间为30min,最佳超声功率为200w,β-环糊精饱和溶液体积最佳为15mL。正交实验结果表明：在25℃,维生素M与β-环糊精包合物的包合率在超声时间为40min、超声功率为200w、β-环糊精饱和溶液为10mL时达到最大值2．36％。超声功率对包和率的影响最大,其次是β-环糊精饱和溶液的体积,影响最小的是超声时间。     

石墨烯-酞菁复合物的制备及应用研究进展

石墨烯可通过非共价作用力和共价作用力与酞菁类化合物进行复合,进而提高酞菁类化合物的功能性。本文阐述了石墨烯通过不同结合方式与酞菁形成复合物的制备方法以及石墨烯-酞菁复合物在颜料、催化、传感器、光电器材以及光动力治疗等功能性方面的应用研究进展。     

茶树油β-环糊精包合物的制备工艺研究

采用L9(34)正交试验,以包合物产率和包合率为筛选指标,以茶树油与β-环糊精的配比、包合时间、包合温度和无水乙醇与茶树油的体积比为考察因素,采用正交试验对茶树油β-环糊精包合物的制备工艺进行优选出最佳工艺条件是茶树油:β-环糊精为1∶8(mL∶g),包合时间为4 h,包合温度为50℃,无水乙醇:茶树油为1∶1(mL∶mL)。经紫外分光光度法和薄层色谱法鉴定,确实形成了茶树油环糊精包合物。     

肉桂油β-环糊精包合物的超声法制备

以肉桂油β-环糊精包合率及包合物收率的综合值为指标,通过正交实验优化包合工艺参数,用紫外光谱与高效液相色谱考察肉桂油包合前后的理化性质来研究超声法制备肉桂油β-环糊精包合物的最佳工艺条件,考察肉桂油包合前后的物化性质。结果得到超声法制备最佳工艺条件为：包合时间40min、包合温度30℃、超声功率150W、m（肉桂油）：m（β-环糊精）=1：10。在优选的条件下包合得包合率为83．5％,包合物的收率为71．3％。实验结果表明：肉桂油被β-环糊精包合后主要成分理化性质没有发生变化。由此肉桂油β-环糊精包合物成功解决了肉桂油易挥发,遇光和热不稳定,难用于工业生产这一难题,提高了其稳定性,制成固体剂型,为肉桂油的开发利用奠定基础。     

硫酸亚铁-β-环糊精包合作用的研究

采用饱和水溶液法制备硫酸亚铁-β-环糊精包合物,紫外分光光度法表征了包合物的形成,并用循环伏安法进一步证实β-环糊精和硫酸亚铁的主客体包合作用。最后采用紫外分光光度法确定了硫酸亚铁-β-环糊精包合物的包合比,并测定了包合物的包合常数,结果表明,β-环糊精与硫酸亚铁可形成包合物,包合比为1：1,包合常数为57．74L/mol。     

几种抗结核杆菌包合物的制备与活性研究

以β-环糊精为药物载体,采用饱和水溶液法制备了吡嗪酰胺-β-环糊精包合物、异烟肼-β-环糊精包合物、异烟肼利福霉素腙-β-环糊精包合物,采用冷冻干燥法制备了胸腺五肽-β-环糊精包合物。吡嗪酰胺与β-环糊精的最佳包合工艺条件为:吡嗪酰胺与β-环糊精物质的量比1.5∶1、包合温度70℃、包合时间1.03 h,此条件下的综合评价为96.18%。异烟肼与β-环糊精的最佳包合工艺条件为:异烟肼与β-环糊精物质的量比1.5∶1、包合温度30℃、包合时间0.5 h,此条件下的综合评价为87.80%。异烟肼利福霉素腙与β-环糊精的最佳包合工艺条件为:异烟肼利福霉素腙与β-环糊精物质的量比1.5∶1、包合温度70℃、包合时间1.08 h,此条件下的综合评价为90.83%。胸腺五肽与β-环糊精的最佳包合工艺条件为:胸腺五肽与β-环糊精物质的量比1.5∶1、包合温度70℃、包合时间1.15 h,此条件下的综合评价为90.03%。包合后药物的水溶解性和热稳定性得到明显改善,具有较好的抗结核杆菌活性。     

含苯环β-环糊精衍生物自包结对反应对映选择性的影响

以单(6-O-p-甲苯磺酰基)-β-环糊精为反应原料,通过亲核取代合成了3个带苯环的β-环糊精衍生物CD-1～CD-3,收率为9.93%～17.51%,衍生物的结构通过1H NMR和ESI-MS进行了表征确认。将合成的β-环糊精衍生物与Na2MoO4?2H2O络合后应用于催化H2O2氧化苯甲硫醚。结果表明,反应介质的pH值对该反应体系的收率有一定影响。通过1H ROESY NMR发现,CD-1～CD-3的分子内自包结是影响Na2MoO4?2H2O催化氧化苯甲硫醚不对称反应产物ee%值的主要原因。通过量子化学计算对自包结状态进行了证实。     

微波法合成八羧基酞菁铁及其对聚乙烯醇纤维的改性

以均苯四甲酸酐、尿素、氯化铁为原料,钼酸铵为催化剂,采用微波固相法合成了八羧基酞菁铁（Fe—OCAP）,研究了各反应奈件对Fe-OCAP产率的影响。采用红外和紫外光谱表征了产物的结构。进一步通过溶液浸染法将Fe—OCAP负载到聚乙烯醇纤维（PVA纤维）上,测试结果表明负载后的PVA纤维去除甲醛效果明显提高。     

（急）钴酞菁修饰两亲性Janus颗粒用于乳液界面光催化染料降解

本文制备了两亲性的雪人状Janus颗粒和钴酞菁催化剂,并成功将钴酞菁催化剂选择性地负载于Janus颗粒的亲水一侧,通过扫描电镜观察到分区明显且具有非对称结构的Janus颗粒,进一步通过XPS、EDS、红外光谱分析、热重分析等测试确定了颗粒的组分。将钴酞菁修饰的两亲性雪人状Janus颗粒同时作为固体颗粒乳化剂和界面催化剂,应用于多相体系中水溶性染料罗丹明B的光催化降解反应,考察了通风和光照、催化剂用量、染料初始浓度以及H₂O₂体积分数对催化效果的影响；通过紫外可见分光光度计观察染料的降解率,结果表明,该Janus颗粒催化剂对染料的催化降解率最高可达94.6%,相对于负载前催化剂展现出明显的催化优势,并且易于回收进行重复利用,循环5次仍保持良好的催化效率。     

Catalytic grafting: A new technique for polymer/fiber composites. II. Plasma treated UHMPE fibers/polyethylene composites

In this paper, the catalytic grafting technique for preparation of polymer/fiber composites is extended to plasma treated ultra-high modulus polyethylene (UHMPE) fiber/high density polyethylene (HDPE) system. The OH groups introduced on the UHMPE fiber surface by oxygen plasma treatment were used to chemically anchor Ziegler-Natta catalyst which then was followed by ethylene polymerization on the fiber surface. The morphology and interfacial behavior, as well as the mechanical properties, of the HDPE composites reinforced by catalytic grafted or ungrafted UHMPE fibers were investigated by SEM, DSC, polarized light optical microscopy, and tensile testing. The experimental results show that the polyethylene grafted on the fibers acted as a transition layer between the reinforcing UHMPE fibers and a commercial HDPE matrix. The interfacial adhesion was also significantly improved. Compared with the composite reinforced by ungrafted UHMPE fibers, the composite reinforced by catalytic grafted UHMPE fibers exhibits much better mechanical properties.     

Two‐Phase Hydroformylation of Higher Olefins Using Randomly Methylated α‐Cyclodextrin as Mass Transfer Promoter: A Smart Solution for Preserving the Intrinsic Properties of the Rhodium/Trisulfonated Triphenylphosphine Catalytic System

The two‐phase hydroformylation of higher olefins with the rhodium/trisulfonated triphenylphosphine catalytic system in the presence of various chemically modified α‐cyclodextrins has been investigated. These cyclodextrins allowed us to increase greatly the reaction rate and the chemoselectivity of the reaction but, contrary to what has been observed previously with the chemically modified β‐cyclodextrins, the linear to branched aldehydes ratio was not affected by the presence of α‐cyclodextrin derivatives. Indeed, the latter was found to be similar to that obtained without any mass transfer promoter, suggesting that the catalytic species are stable in the presence of α‐cyclodextrin derivatives.     

Characterization of amine-functionalized single-walled carbon nanotube-low symmetry phthalocyanine conjugates

Functionalization of single-walled carbon nanotubes (SWCNTs) with amine groups using a previously developed diazonium approach, followed by reaction with a carboxylic acid moiety allows direct attachment by an amide bond. We have developed a new SWCNT-low symmetry phthalocyanine conjugate using this approach, using dicyclohexylcarbodiimide as an activating agent to facilitate formation of an amide bond to give a covalently linked conjugate. A conjugate formed by non-covalent attachment has been used for a comparative investigation by FT-IR, Raman, and UV-Vis spectroscopies, and thermal gravimetric analysis. The fluorescence of the phthalocyanine is quenched in the conjugate.     

Grafting of cotton fiber by water‐soluble cyclodextrin‐based polymer

β‐cyclodextrin (CD)‐based linear water‐soluble polymers were synthesized in a controlled manner by a one‐pot synthesis method. The synthesized water‐soluble polymer was covalently fixed onto cotton surfaces by a polycondensation reaction at controlled conditions. Grafting on cotton fibers transfers the cyclodextrin properties onto its surface. The grafting occurred through the formation of a crosslink between hydroxyl groups of cotton and CD polymer. This was confirmed using FTIR spectroscopy, DSC, tensile strength, computer color matching, and solvent fastness analysis. The tensile strength of modified fiber samples was unchanged as compared to that of unmodified fiber samples. The percentage of grafting depended on a number of parameters and specifically on (i) temperature, (ii) time, and (iii) pH of the reaction medium. Similarly, under optimum conditions the weight increase on cotton fabric due to the grafting reaction could reach 10–15 wt % The grafted cotton fabric shows good dyeability and solvent fastness properties. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

Fabrication of deodorizing fabric by grafting of metal phthalocyanine derivative onto nonwoven polypropylene fabric

Fabrication of deodorizing fabric was tried by grafting metal phthalocyanine derivative, a catalytic deodorant, onto polypropylene (PP) nonwoven fabric. Fe(III)-4,4′,4″,4‴-tetra carboxamide phthalocyanine (Fe-TCMP) was synthesized. The Fe-TCMP showed high-deodorizing performance when tested for the elimination of 2-mercaptoethanol, an index material for bad-smelling compounds. The Fe-TCMP was converted to Fe(III)-4,4′,4″,4‴-tetracarboxylic acid phthalocyanine (Fe-TCAP) by hydrolysis to have carboxyl groups. It was chemically grafted on the surface of PP nonwoven fabric, which was surface modified to have amine groups with diaminocyclohexane (DACH) plasma. Such fabricated deodorizing fabric showed high-deodorizing performance for 2-mercaptoethanol. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 839–846, 2001     

具有不同取代基金属酞菁衍生物改性SA/CS双极膜

分别用八羧基铜酞菁、四磺酸基铜酞菁对海藻酸钠阳膜和四氨基铜酞菁对壳聚糖阴膜进行了改性,制备了金属酞菁衍生物改性海藻酸钠/壳聚糖双极膜,并用热分析、电子万能试验机、接触角测定仪和J-V关系等对改性海藻酸钠/壳聚糖双极膜进行了表征。实验结果表明,金属酞菁衍生物改性海藻酸钠/壳聚糖双极膜的热稳定性、力学性能和亲水性均获得提高。金属酞菁衍生物在双极膜中间界面层形成高荷电区,促进了中间界面层水的解离,从而降低了海藻酸钠/壳聚糖双极膜的膜电压。具有不同取代基的金属酞菁衍生物对中间界面层水解离的催化能力不同,这与不同取代基的金属酞菁衍生物改性膜的亲水性大小有关。     

Ce-Cu复合催化剂用于对硝基苯酚废水处理研究

通过络合法制得Ce-Cu复合催化剂,采用X射线衍射、扫描电子显微镜和程序升温还原对催化剂性能进行了研究,考察了该催化剂用于废水中对硝基苯酚去除性能。结果表明,催化剂中Cu氧化物能很好地溶入CeO2晶格形成表面具有多孔结构的Ce0.86Cu0.14O2固溶体催化剂,催化剂中Cu-O键得到一定程度的削弱,使其可还原性能得到提高而提高了催化剂中氧化物的活性。Ce0.86Cu0.14O2催化剂可将废水中对硝基苯酚的质量浓度由150 mg.L-1降到1.8 mg.L-1左右,对硝基苯酚去除率可达98.8%。     

环糊精衍生物的分子形态及其构筑策略研究进展

根据环糊精衍生物分子结构与形态的不同,分类综述了环糊精衍生物（以β-环糊精衍生物为主）的形态及其构筑策略研究进展,包括单取代环糊精衍生物、双取代环糊精衍生物、多取代环糊精衍生物、二聚体环糊精衍生物、多聚体环糊精衍生物和环糊精聚合物（包括固载化环糊精）。指出环糊精衍生物的构筑是基于环糊精构筑各种功能材料的基础与关键,是环糊精母体应用的进一步拓展。基于环糊精构筑各种超分子仿酶,不仅可以充分发挥环糊精结构上的先天优势,也可以实现有机合成反应从有机相到水相的顺利过渡,并提高反应的选择性,对有机合成化学的"绿色化"具有重要的意义,对其他功能材料的构筑也具有重要的参考价值和指导意义。