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Metal foils for Raman scattering were prepared by HNO_3 etching method. These foils werefound to exhibit a strong SERS effect and excellent thermal stability. SERS spectra of cystaminehave been taken to illustrate the usefulness of this sample preparation method in the studies ofchemisorption. The ring opening reactions of an epoxy compound have been observed on the topof chemisorbed cystamine on silver foils. 相似文献
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The crowding agent induced phase transition of amphiphilic block copolymers in solution was explicitly considered. The influence of the size and the volume fraction of the crowding agent on the phase separation of amphiphilic diblock copolymers is investigated by using self-consistent field theory (SCFT) method. The concentration of the disorder to order transition of the block copolymer decreases when the size of the crowding agent is larger than that of the solvent. The higher volume fraction of the crowding agent will induce the transition of the block copolymer from disorder to order state at a lower concentration. The relation between the size and the volume fraction of the crowding agent is elucidated. When the size of the crowding agent is larger, its volume fraction of the disorder to order transition of the block copolymer will be lower. The conformation of the crowding agent considered as a polymer chain is also studied and compared. 相似文献
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FT-Raman光谱在高分子结构研究中的应用 总被引:1,自引:0,他引:1
近年来,继在红外、核磁共振技术领域成功地采用傅立叶变换及计算机技术之后,八十年代后期,傅立叶变换拉曼(FT-Raman)技术突破了原有实验条件的限制,得到了迅速发展[1-5]。九十年代初已进入商品市场。FT-Raman光谱仪的基本结构与普通可见光激光... 相似文献
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表面增强拉曼光谱研究高分子—金属界面结构 总被引:2,自引:0,他引:2
表面增强拉曼散射(SERS)是近十几年来迅速发展起来的一种有力的表界面分析手段。本文简要地介绍了作者对激光拉曼制样技术的改进,以及SERS在金属表面的聚合反应,聚合物在金属表面的取向,高聚物-金属表面微观结构等研究中的应用。 相似文献
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The coordination polymerization of benzotriazole with metallic copper has been investigated by infrared and X-ray photoelectron spectroscopies. We found that benzotriazole could react with copper (0) under mild conditions to form bis (benzotriazolato) copper (Ⅱ) and benzotriazolato copper (Ⅰ)which covered the surface of copper metal in the shape of polymeric materials. Since benzotriazole is of great interest as a ligand in that its presence in many biological system with metal ions, and is considered as a corrosion inhibitor, this work will be in favour of the study of protective corrosion. 相似文献
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高分子复合材料界面结构研究 总被引:1,自引:0,他引:1
高分子材料表、界面的结构变化或化学反应常影响该材料的性能。聚合物的表面结构及复合物的界面结构研究,对于工程材料、粘合及涂料工业都有重要的意义。近十几年来迅速发展起来的光谱技术,使这项研究工作可以普及到许多实验室去进行。其中X射线光电子能谱(XPS或称为ESCA)、俄歇电子能谱(AES)、离子散射光谱(ISS)、穆斯 相似文献
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表面增强喇曼散射(SERS)光谱在研究唑类化合物如苯并三氮唑(BTAH),苯并咪唑(BIMH)和2-巯基苯并咪唑(MBIH)在铜表面的行为及缓蚀作用方面已有较多应用。然而这类研究主要在电化学池中进行,存在一定局限性。本文报导利用硝酸蚀刻铜表面,用SERS直接研究铜表面在空气中的氧化以及唑类化合物对此氧化过程的阻碍作用。 相似文献