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Spectral properties of carbazole-containing polymers with phosphore groups in the main chain 主链含磷基团的咔唑类聚合物的光谱性质
International School on Spectroscopy of Molecules and Crystals Pub Date : 2002-12-01 DOI: 10.1117/12.486648
D. Bogdał, V. Yashchuk, J. Pielichowski, K. Kushnir, M. Warzała, V. Kudrya
{"title":"Spectral properties of carbazole-containing polymers with phosphore groups in the main chain","authors":"D. Bogdał, V. Yashchuk, J. Pielichowski, K. Kushnir, M. Warzała, V. Kudrya","doi":"10.1117/12.486648","DOIUrl":"https://doi.org/10.1117/12.486648","url":null,"abstract":"The absorption, fluorescence and phosphorescence of the carbazole-containg polymers with phosphore groups in the main chain of two types and without spacer were studied. It was shown that spectral properties of pf2-sep polymer are connected mainly with optical transitions in individual carbazole chromophores. The optical properties of pf2-conj polymer are rather different comparative to the pf2-sep. That is caused by perturbation carbazole groups electron system by phosphor-groups and influence carbazole groups each other. This perturbation takes place under special relative geometrical displacement of carbazole and phosphor groups.","PeriodicalId":205850,"journal":{"name":"International School on Spectroscopy of Molecules and Crystals","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125316213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of the structure of polymorphous modifications of fluoroalkylcyclohexanecarboxylic acids by infrared spectroscopy methods 红外光谱法研究氟烷基环己烷羧酸的多形修饰结构
International School on Spectroscopy of Molecules and Crystals Pub Date : 2002-12-01 DOI: 10.1117/12.486659
L. Babkov, E. Martynova, G. Puchkovska, A. Slepoukhine, E. Vedyaeva
{"title":"Investigation of the structure of polymorphous modifications of fluoroalkylcyclohexanecarboxylic acids by infrared spectroscopy methods","authors":"L. Babkov, E. Martynova, G. Puchkovska, A. Slepoukhine, E. Vedyaeva","doi":"10.1117/12.486659","DOIUrl":"https://doi.org/10.1117/12.486659","url":null,"abstract":"The results of investigation of polymorphism and mesomorphic states of fluorinated derivatives of alkylcyclohexanecarboxylic acids nFACHCA and new results for n=4, 7 are discussed. The methods of vibrational spectroscopy have been used. The samples were investgiated in the 290-500 K temperature range. The spectra were recorded in the range of 400-4000 cm-1. The frequencies of normal modes and IR band intensities are calculated for conformers of H-bonded complexes with varioius orientations of fluoroalkyl radical and carboxylic group relative to the rest of the molecular compelx. The polymorphism of the nFACHCA is conformational. The influence of H-bonds on dynamics of H-bonded complex, polymorphic crystalline modification and mesophase formaiton was determined. The transitions solid crystal-liquid crystal-isotropic liquid and soution are accompanied by H-bond system reconstruction: the dimers, associates, chain associates and monomers appear.","PeriodicalId":205850,"journal":{"name":"International School on Spectroscopy of Molecules and Crystals","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124241697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Excimer molecules. Halogenides of noble bases. Spectra of induced radiation. 准分子分子。贵贱碱卤化物。感应辐射光谱。
International School on Spectroscopy of Molecules and Crystals Pub Date : 2002-12-01 DOI: 10.1117/12.486645
N. Zubrilin
{"title":"Excimer molecules. Halogenides of noble bases. Spectra of induced radiation.","authors":"N. Zubrilin","doi":"10.1117/12.486645","DOIUrl":"https://doi.org/10.1117/12.486645","url":null,"abstract":"Structure of stimulated emission spectra of noble gas monohalogenide moleculea lasers is considered. Spectrum of KrF lasing on bound-to-free transitions is reported. Fine structure of stimulated emission spectra of molecules with shallow potential well in the ground state is considered by the example of XeCl and XeF molecules. The structure is due to rotations in XeCl and XeF. Influence of the active medium parameters on the structure of XeF molecule stimulated emisison spectrum structure as well as spectral performances of emission of XeF laser pumped by powerful electron beam and pulsed electric discharge are considered. The nature of the lasing spectrum in the regin near 350 nm is discussed. The report is based mainly on the authors' studies.","PeriodicalId":205850,"journal":{"name":"International School on Spectroscopy of Molecules and Crystals","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121758465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical properties of porous titanium doixide 多孔氧化钛的光学性质
International School on Spectroscopy of Molecules and Crystals Pub Date : 2002-12-01 DOI: 10.1117/12.486674
V. Gayvoronsky, O. Loginenko, R. Didenko, A. Galas, V. Reznichenko, M. I. Strashnikova, T. Dittrich, V. Duzhko
{"title":"Optical properties of porous titanium doixide","authors":"V. Gayvoronsky, O. Loginenko, R. Didenko, A. Galas, V. Reznichenko, M. I. Strashnikova, T. Dittrich, V. Duzhko","doi":"10.1117/12.486674","DOIUrl":"https://doi.org/10.1117/12.486674","url":null,"abstract":"This paper presents optical absorption spectra and refractive index dispersion curves of porous anatase thin layers on glass substrate. The results have been measured in the photon energy range 1,5-3,5 eV at room temperature. Estimated samples porosity is about 58 percent in framework of Bruggeman effective medium approximation. Indicatrix of diffusion was measured at 632.8 nm. Defects absorption gives the major contribution into transmitted light losses below the gap in comparison with scattering phenomena. We obtained optical band gaps for both direct -Eg = 3.69 eV and indirect transitions Eg = 3.42 eV. The Urbach tail width 180 meV obtained from the optical absorption measurements agrees with the magnitude of trap depth 185 meV from the conductivity temperature dependencies for the similar anatase nanocrystallines.","PeriodicalId":205850,"journal":{"name":"International School on Spectroscopy of Molecules and Crystals","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122077523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectroellipsometrical measurement of large roughness surface 大粗糙度表面的光谱椭偏测量
International School on Spectroscopy of Molecules and Crystals Pub Date : 2002-12-01 DOI: 10.1117/12.486670
L. Melnichenko, B. B. Tytarchuk, I. A. Shaykevich
{"title":"Spectroellipsometrical measurement of large roughness surface","authors":"L. Melnichenko, B. B. Tytarchuk, I. A. Shaykevich","doi":"10.1117/12.486670","DOIUrl":"https://doi.org/10.1117/12.486670","url":null,"abstract":"Spectroellipsometrical measurements are usually made on smooth surfaces or surfaces with small roughness. Practical needs often demand measuring optical parameters of real details and products. The surface of these dtails and products is not mirror-like, but veyr rough, that is Ra greater than/equal to λ. This work shows possibility of ellipsometrical measurements on very rough surfaces. We proposed the method of ellipsometrical measurement of these surfaces and made investigations for metal rough plates and semiconductor surfaces of the anodized aluminum. The most common method of measurement of spectroellipsometrical parameters is the Beatty method and its different modifications. Therefore it is for this method that we work out our own principles.","PeriodicalId":205850,"journal":{"name":"International School on Spectroscopy of Molecules and Crystals","volume":"333 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120883180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Morphology and optical properties of discontinuous gold films on semiconductor surface 半导体表面不连续金膜的形貌与光学性质
International School on Spectroscopy of Molecules and Crystals Pub Date : 2002-12-01 DOI: 10.1117/12.486675
T. Barlas, N. Dmitruk, V. Romaniuk
{"title":"Morphology and optical properties of discontinuous gold films on semiconductor surface","authors":"T. Barlas, N. Dmitruk, V. Romaniuk","doi":"10.1117/12.486675","DOIUrl":"https://doi.org/10.1117/12.486675","url":null,"abstract":"This paper is devoted to investigations of discontinuous metal films on semicondcutor surface by transmission electron microscopy (TEM) and atomic force microscopy (AFM). Technology of local electrochemical deposition of noble metal nanoparticles on semiconductor substrate is elaborated. It allows to obtain as well isolated Au particles with the 2-50 nm diameter as some chain structures perhaps of fractal type. According to the TEM and AFM data the gold clusters have the form of a truncated spheres surrounded by uncovered microrelief areas of semiconductor. Comparison of these two methods allows to study the morphology of metal coating, and the shape of metal islands, and their sizes. The microrelief of substrate surface, inevitable at used technology of the gold preparation, has been identified. In order to study the effect of both gold island and surface roughness on the optical properties of structures, we performed the reflectance spectra of polarized light measurements at several angles of incidence. Optical reflectance spectra are interpreted by the modified Maxwell-Garnett theory taking into account the pair multipole interaction between the nanoparticles or by the symmetrical Bruggeman's approximation.","PeriodicalId":205850,"journal":{"name":"International School on Spectroscopy of Molecules and Crystals","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127689923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Vibrational spectra and the structure peculiarity of TiO2 different polycrystalline forms 不同多晶形式TiO2的振动光谱及结构特性
International School on Spectroscopy of Molecules and Crystals Pub Date : 2002-12-01 DOI: 10.1117/12.486638
V. V. Shimanovskaya, T. Khalyavka, G. Puchkovska, T. Bezrodna, V. Strelko, T. Veblaya, J. Baran, H. Ratajczak
{"title":"Vibrational spectra and the structure peculiarity of TiO2 different polycrystalline forms","authors":"V. V. Shimanovskaya, T. Khalyavka, G. Puchkovska, T. Bezrodna, V. Strelko, T. Veblaya, J. Baran, H. Ratajczak","doi":"10.1117/12.486638","DOIUrl":"https://doi.org/10.1117/12.486638","url":null,"abstract":"Particularly pure samples of titanium dioxide with a different crystalline structure and a different construction of TiO2 polycrystaline particles which were produced by thermal hydrolysis of TiCl4 hydrochloric acid solutions, were studied by methods of IR and Raman spectroscopy. The assignment of IR and Raman spectral bands to vibrations of different symmetry types has been performed. In accordance with positions and half-width of Raman lattice vibrational band 'ν=143 cm-1'. The stoichiometric composition estimation of TiO2 different crystalline phases has been carried out according to data obtained about the position and half-width of the lattice Raman vibrational band. The intensity and frequency of IR bands in the region of 1250-900 cm-1 were shown to be sensitive to a type of TiO2 crystalline composition and to the physically adsorbed water content.","PeriodicalId":205850,"journal":{"name":"International School on Spectroscopy of Molecules and Crystals","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129610155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Light-induced Freederiks transition in waveguide with liquid crystal core 液晶波导中的光致自由德里克跃迁
International School on Spectroscopy of Molecules and Crystals Pub Date : 2002-12-01 DOI: 10.1117/12.486656
Mikhailo F. Lednei, I. Pinkevich
{"title":"Light-induced Freederiks transition in waveguide with liquid crystal core","authors":"Mikhailo F. Lednei, I. Pinkevich","doi":"10.1117/12.486656","DOIUrl":"https://doi.org/10.1117/12.486656","url":null,"abstract":"Director reorientation threshold in the field of electromagnetic wave in round cylindrical metallic waveguide loaded with nematic liquid crystal is theoretically studied. The dependence of threshold on the frequency and type of electromagnetic wave in waveguide as well as director anchoring energy with waveguide surface is analyzed.","PeriodicalId":205850,"journal":{"name":"International School on Spectroscopy of Molecules and Crystals","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129638262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectroscopy of the spherical particles system as the eye lens biotissue by use of Monte-Carlo simulation 利用蒙特卡罗模拟方法对球形粒子系统作为眼球晶状体生物组织进行光谱学研究
International School on Spectroscopy of Molecules and Crystals Pub Date : 2002-12-01 DOI: 10.1117/12.486649
N. L. Larionova, I. L. Maksimova
{"title":"Spectroscopy of the spherical particles system as the eye lens biotissue by use of Monte-Carlo simulation","authors":"N. L. Larionova, I. L. Maksimova","doi":"10.1117/12.486649","DOIUrl":"https://doi.org/10.1117/12.486649","url":null,"abstract":"The scattering spectra of low-absorptive disperse media are not much researched. It is stipulated by the same difficulties: in experiments, the theoretical investigations had low precision and some errors and the most precise Monte-Carlo method until quite recently was difficult to use in that aim in view of the large time expenses. However, that theme required investigation since the scattering spectra are very informative and make it possible to describe the internal structure of the studied object. It is important in researches of biotissues when the scattering spectra are the means of effective non-invasive diagostics. In our study the system of spherical particles which sizes are comparable with radiation wavelength that then applied to the tissue of eye lens, the internal parameters of which were changing depending on the pathology cases were modeled. And the results of theoretical investigations of scattering spectra of these objects obtained by the Monte-Carlo simulation are presented.","PeriodicalId":205850,"journal":{"name":"International School on Spectroscopy of Molecules and Crystals","volume":"31 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120887263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of the binding of the therapeutically active nucleosides to DNA molecules with different level of lesions 不同程度病变的治疗活性核苷与DNA分子结合的比较
International School on Spectroscopy of Molecules and Crystals Pub Date : 2002-12-01 DOI: 10.1117/12.486647
E. Kruglova, N. Gladkovskaya
{"title":"Comparison of the binding of the therapeutically active nucleosides to DNA molecules with different level of lesions","authors":"E. Kruglova, N. Gladkovskaya","doi":"10.1117/12.486647","DOIUrl":"https://doi.org/10.1117/12.486647","url":null,"abstract":"Recently we have shown that DNA molecules extracted from epididymis of the Wistar male rats exposed to low doses of gamma radiation interact with some pyrimidine nucleosides. The bindign affinities of NUC to control DNA molecules are unessential. Comparing the UV melting curves for the various DNA sammples we show that observed differences are related to conformational chagnes in the DNA double helix. The samples of the damaged DNA have been obtained by partial denaturation of the calf thymus DNA in the salt-free aqueous solutions. The level of DNA damages in the model DNA smplase depends on the DNA concentration. It was shown that damages in the DNA molecules lead to changes of the melting curves of DNA-NUC mixtures that are similar to those for the DNA samples extracted from irradiated tissues. ALso it has been found that the binding mechanisms to cytosine arabinoside and 6-azacytosine to DNA molecuels having modifeid secondary structures are different.","PeriodicalId":205850,"journal":{"name":"International School on Spectroscopy of Molecules and Crystals","volume":"29 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128929001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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