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Molecular Orientation and Structural Characterization of Ultrathin Films of C_(12)AzoNaph(1,4)C_6N-SDS Studied by FT-IR and NIR-SERS Spectroscopies

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Chemical Research in Chinese Universities 2002年第4期18卷 433-437页

作者： yukihiro ozaki DepartmentofChemistry SchoolofScienceandTechnologyKwansei-GakuinUniversity

The orientation and structural characterization of the ultrathin film of azobenzene-containing amphiphilic compound, C_ 12AzoNaph(1,4)C_6N +Br -, were studied in the present study. The compound can form a stable monolayer with sodium dextrin sulfate(SDS) by means of electrostatic interaction. Fourier-transform infrared(FT-IR) and near-infrared surface-enhanced Raman scattering(NIR-SERS) spectroscopies were used to study the orientation and characterize the structure of the Langmuir-Blodgett(LB) film and the dipping film. The FT-IR spectra indicate that the alkyl tail is nearly perpendicular to the substrate surface without any aggregation and adopts largely trans-zigzag conformation in the LB film. The NIR-SERS spectra demonstrate that the chromorphoric part in C_ 12AzoNaph(1,4)C_6N +Br is also nearly perpendicular to the surface of silver substrate both in the dipping film and the LB film. A new 'sandwiched system' model was designed to investigate the orientation and structural characterization of the chromophoric part in the multi-monolayer LB films on the non-SERS active substrate. The SERS mechanism of the 'sandwiched system' is discussed in the present paper.

关键词： Molecular orientation LB film NIR-SERS spectroscopy

Near-Infrared Imaging Using a High-Speed Monitoring Near Infrared Hyperspectral Camera(Compovision)

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光谱学与光谱分析 2015年第4期35卷 865-869页

作者： Daitaro Ishikawa Asako Motomura Yoko Igarashi yukihiro ozaki Graduate School of Agricultural Science Tohoku University 1-1 Amamiya Tsutsumidori Aobaku Sendai 981-8555 Japan Sumitomo Electric Industries Ltd. 1 Taya Sakae Yokohama Kanagawa 244-8588 Japan School of Science and Technology Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan

This review paper reports near-infrared(NIR)imaging studies using a newly-developed NIR camera,*** can measure a significantly wide area of 150mm×250mm at high speed of between 2and *** enables a wide spectral region measurement in the 1 000~2 350nm range at 6nm *** investigated the potential of Compovision in the applications to industrial problems such as the evaluation of pharmaceutical tablets and *** studies have demonstrated that NIR imaging based on Compovision can solve several issues such as long acquisition times and relatively low sensitivity of *** imaging with Compovision is strongly expected to be applied not only to pharmaceutical tablet monitoring and polymer characterization but also to various applications such as those to food products,biomedical substances and organic and inorganic materials.

关键词： Near infrared spectroscopy Imaging Hyperspectral camera

Fundamental studies on enhancement and blinking mechanism of surface-enhanced Raman scattering （SERS） and basic applications of SERS biological sensing

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Frontiers of physics 2014年第1期9卷 31-46页

作者： Yuko S. Yamamoto Mitsuru Ishikawa yukihiro ozaki Tamitake Itoh Nano-Bioanalysis Research Group Health Research Institute National Institute of Advanced Industrial Science and Technology (AIST) Takamatsu Kagawa 761-0395 Japan Department of Chemistry Josai University Itado Saitama 350-0295 Japan Department of Chemistry School of Science and Technology Kwansei Gakuin University Sanda Hyogo 669-1337 Japan

We review recent our results in the fundamental study of surface-enhanced Raman scattering （SERS） with emphasis on experiments that attempted to identify the enhancement and blinking mechanism using single Ag nanoparticle dimers attached to dye molecules. These results are quantitatively discussed in the framework of electromagnetic mechanism. We also review recent our results in basic SERS applications for biological sensing regarding detections of cell surface molecules and distinction of disease marker molecules under single cell and single molecule level.

关键词： plasmonics surface-enhanced Raman scattering (SERS) surface-enhanced fluorescence,Ag nanoparticle

不需干燥预处理过程获得含水汽的丙酮气体样品的高质量红外光谱（英文）

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光谱学与光谱分析 2015年第9期35卷 2540-2543页

作者：柳青陈玉静王海水曾强 ozaki yukihiro 华南理工大学化学与化工学院广东广州510640 Department of Chemistry School of Science and TechnologyKwansei Gakuin University

测量气体样品的红外光谱时,红外光谱仪器内的水汽和气体样品中所含的水汽会严重干扰气体的红外光谱。为消除水汽的干扰,通常作法是测量前必须将水分子(气态)彻底排除掉,也就是使光谱仪器和气体样品保持干燥状态。该研究提供一个新测量方... 详细信息

测量气体样品的红外光谱时,红外光谱仪器内的水汽和气体样品中所含的水汽会严重干扰气体的红外光谱。为消除水汽的干扰,通常作法是测量前必须将水分子(气态)彻底排除掉,也就是使光谱仪器和气体样品保持干燥状态。该研究提供一个新测量方法,不需任何干燥预处理过程,直接获得含水汽的丙酮气体的红外光谱。经过几十次光谱扫描累加后,观察并根据水汽谱的吸收峰性质(吸光率>0或吸光率<0),向光谱仪样品室引入少量干燥氮气或少量潮湿空气,在接下来的光谱扫描累加过程中,水汽吸收峰将逐渐变小直至消失。实验结果表明该方法去除水汽干扰峰简单高效。新方法在0.5cm-1光谱分辨率时效果非常好,为气体的高分辨分析提供了有力工具。

关键词：水汽干扰干扰峰扣除红外光谱高分辨气体样品

Controllable Silver Plating on Silica for Surface-enhanced Raman Scattering

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Chemical Research in Chinese Universities 2011年第4期27卷 683-687页

作者： CHEN Lei HAN Xiao-xia YANG Jing-xiu ZHOU Ji LU Zhi-cheng SONG Wei ZHAO Bing XU Wei-qing ozaki yukihiro State Key Laboratory of Supramolecular Structure and Materials Jilin University Changchun 130012 P. R. China Department of Chemistry and Research Center for Single Molecule Spectroscopy School of Science and Technology Kwansei Gakuin University Sanda Hyogo 669-1337 Japan

We proposed a facile and rapid method for preparing silica-silver core-shell（SSCS） substrates to use Ag electroless plating on SiO2@Au-seed ***-Vis-NIR absorption spectrometer and SEM were employed to monitor the reaction process of the formation of Ag on the surfaces of silica beads,and the optical resonance of the substrate could shift from visible to NIR *** has been found that surface-enhanced Raman scattering（SERS） enhancement changes with the electroless plating time and the SSCS substrate with the plating time of 90 s（90SSCS） shows the strongest SERS response under the laser excitation at 514.5 *** collected over multiple spots and substrate of rhodamine 6G（R6G） resulted in a relative standard deviation（RSD） of 9.75%.The calculated enhancement factor（EF） was approximately 105 ＂*** substrate exhibits high SERS performance,which is due to electromagnetic SERS enhancement with additional localization field within closely packed Ag nanoparticles decorated on the SiO2 *** this substrate presents tunable and broad localized surface plasmon resonance（LSPR）,so this method may open a new way for SERS studies with other laser excitation.

关键词： SiO2 nanoparticle Au seed Ag nanoparticle Surface-enhanced Raman scattering(SERS)

胸腺嘧啶在改进银溶胶溶液中的表面增强拉曼散射光谱信号与浓度的定量关系

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光谱学与光谱分析 2009年第7期29卷 1889-1891页

作者：张磊张玉兰张伟王文明杜一平 yukihiro ozaki 华东理工大学分析测试中心上海200237 School of Science and Technology Kwansei-Gakuin University Sanda 669-1337 Japan

尝试使用高分子材料作为银溶胶的稳定剂，以吡啶作为内标化合物研究胸腺嘧啶浓度与其SERS信号强度的关系。在胸腺嘧啶的浓度为2×10^-4～1×10^-3 mol·L^-1的范围内，谱峰强度之比与胸腺嘧啶的浓度之间呈现良好的线性关系，线性回归方... 详细信息

尝试使用高分子材料作为银溶胶的稳定剂，以吡啶作为内标化合物研究胸腺嘧啶浓度与其SERS信号强度的关系。在胸腺嘧啶的浓度为2×10^-4～1×10^-3 mol·L^-1的范围内，谱峰强度之比与胸腺嘧啶的浓度之间呈现良好的线性关系，线性回归方程为y=3.143x＋0.348 7, 线性相关系数R^2=0.975 4。

关键词：表面增强拉曼散射胸腺嘧啶稳定剂

Direct Demonstration of Surface Plasmon-Sensitive Surface Enhanced Raman Scattering in Single Silver Nanoparticles

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Direct Demonstration of Surface Plasmon-Sensitive Surface En...

时间分辨与偏振红外光谱研究电场诱导下手性反铁电液晶的翻转过程

第十二届全国光散射学术会议

作者： Tamitake ITOH Kazuhiro HASHIMOTO Akifumi IKEHATA yukihiro ozaki Department of Chemistry Kwansei-Gakuin University

Surface-enhanced Raman scattering(SERS)has attracted great attention because of enormous enhancement of Raman scattering intensity by 10to 10together with resonace Raman effect.[1]Polarization dependences of Rayleigh and surface-enhanced Raman scattering were measured for single Ag nanoparticles on which Rhodamine 6G molecules(R6G)were adsorbed in order to investigate a relation between surface plasmon(SP)and SERS.A mixture of a NaCl(10 mM)aqueous solution and that

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cnki会议

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光谱学与光谱分析 2000年第5期20卷 598-600页

作者：赵冰 AL Verma 尾崎幸洋吉林大学超分子结构与谱学开放实验室 Department of Physics North-Eastern Hill UniversityShillong-793022India 关西学院大学理学院

手性反铁电液晶分子中的各个不同片段、不同基团在电场诱导下展现不同的取向与取向分布。在交变电场的作用下 ,分子中各个部分的翻转动力学行为也表现的不同。

关键词：偏振红外光谱手性反铁电液晶翻转动力学

2-烷基TCNQ的红外光谱和结构研究——CH_2剪式振动的双峰与晶体场分裂的关系(英文)

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光谱学与光谱分析 2010年第4期30卷 892-896页

作者：王海水杨燕花尾崎幸洋华南理工大学化学与化工学院广东广州510640 关西学院大学理工学部化学科

测量了2-烷基TCNQ(C8TCNQ,C12TCNQ,C18TCNQ)浇铸膜的红外光谱,发现这类化合物的红外CH2剪式振动在1 471和1 462 cm-1处显示2个峰。这2个峰的强度比(I1 471/I1 462)随着烷基链的长度增加而明显减少。另外,来自CH2的1 471 cm-1吸收峰与来... 详细信息

测量了2-烷基TCNQ(C8TCNQ,C12TCNQ,C18TCNQ)浇铸膜的红外光谱,发现这类化合物的红外CH2剪式振动在1 471和1 462 cm-1处显示2个峰。这2个峰的强度比(I1 471/I1 462)随着烷基链的长度增加而明显减少。另外,来自CH2的1 471 cm-1吸收峰与来自TCNQ环的1 529 cm-1吸收峰的相对强度随着碳链的长度增加而不发生变化。CnTCNQ系列化合物的红外光谱CH2的剪式振动行为与长链脂肪酸中CH2行为很不相同。在长链脂肪酸中,晶体场效应导致了剪式振动分裂。考虑C12TCNQ的晶体结构,而将1 471cm-1峰归属为非叉指对接的碳链,将1 462 cm-1峰归于叉指对接的碳链,双峰的出现与晶体场分裂无关。并且得到烷基TCNQ中,非叉指对接的碳链的长度与碳链总长度无关的结论。

关键词：红外光谱 CH2剪式振动晶体场分裂 2-烷基TCNQ