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Advances in Molecular Relaxation and Interaction Processes最新文献

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Caracterisation d'un milieu presentant une relaxation dielectrique par sa reponse a l'interface. Application a l'etude de quelques derives monosubstitues du benzene 通过对界面的响应来表征介电弛缓的介质。在苯某些单取代衍生物研究中的应用
Advances in Molecular Relaxation and Interaction Processes Pub Date : 1981-10-01 DOI: 10.1016/0378-4487(81)80022-2
A.M. Bottreau, G. Vicq, F.J. Arcega, J.M. Fornies-Marquina
{"title":"Caracterisation d'un milieu presentant une relaxation dielectrique par sa reponse a l'interface. Application a l'etude de quelques derives monosubstitues du benzene","authors":"A.M. Bottreau,&nbsp;G. Vicq,&nbsp;F.J. Arcega,&nbsp;J.M. Fornies-Marquina","doi":"10.1016/0378-4487(81)80022-2","DOIUrl":"10.1016/0378-4487(81)80022-2","url":null,"abstract":"<div><p>A new method (justified by permittivity measurement) is proposed to study dielectric relaxation by means of the interface air-dielectric response.</p><p>The characterization established here for a single relaxation (the distribution of relaxation times is represented by a Dirac function) can be used when a generalization is wanted for more complex cases (symmetric or asymmetric distribution function of relaxation times).</p><p>Application of this method to a series of mono-substituted benzenes is shown in this paper.</p></div>","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1981-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(81)80022-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83666770","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
Raman studies on anticancer inorganic ring -DNA interactions 抗癌无机环-DNA相互作用的拉曼研究
Advances in Molecular Relaxation and Interaction Processes Pub Date : 1981-10-01 DOI: 10.1016/0378-4487(81)80024-6
Michel Manfait, Jean-François Labarre
{"title":"Raman studies on anticancer inorganic ring -DNA interactions","authors":"Michel Manfait,&nbsp;Jean-François Labarre","doi":"10.1016/0378-4487(81)80024-6","DOIUrl":"10.1016/0378-4487(81)80024-6","url":null,"abstract":"<div><p>A Raman investigation of pentaziridinocyclodiphosphathiazene -DNA interactions in vitro suggests that the alkylating sites on DNA for this powerful antitumour agent are essentially the oxygen atoms of the ribose backbone with a second order dialkylating effect on the N(7) and <span><math><mtext>N</mtext></math></span>H<sub>2</sub> positions of Adenine. These contrasts with the case of hexaziridinocyclotriphosphazene which interacts with the DNA by the same two routes but through a balanced mode.</p></div>","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1981-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(81)80024-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86837226","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: 8
Studies in physical and theoretical chemistry, Vol.9. Dielectric Physics 物理与理论化学研究，第9卷。电介质物理
Advances in Molecular Relaxation and Interaction Processes Pub Date : 1981-10-01 DOI: 10.1016/0378-4487(81)80026-X
A.H. P
{"title":"Studies in physical and theoretical chemistry, Vol.9. Dielectric Physics","authors":"A.H. P","doi":"10.1016/0378-4487(81)80026-X","DOIUrl":"https://doi.org/10.1016/0378-4487(81)80026-X","url":null,"abstract":"","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1981-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(81)80026-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136930035","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
A new approach to radiationless decay phenomena by generalization of the Mori theory 推广Mori理论研究无辐射衰变现象的新方法
Advances in Molecular Relaxation and Interaction Processes Pub Date : 1981-10-01 DOI: 10.1016/0378-4487(81)80025-8
P. Grigolini , V. Rosato
{"title":"A new approach to radiationless decay phenomena by generalization of the Mori theory","authors":"P. Grigolini ,&nbsp;V. Rosato","doi":"10.1016/0378-4487(81)80025-8","DOIUrl":"10.1016/0378-4487(81)80025-8","url":null,"abstract":"<div><p>A suitable extension of the Mori theory to deal with non-hermitian hamiltonians leads to a rigorous justification of models of “reduced” kind for radiationless decay phenomena. By using the model of an excited state sequentially coupled to two dissipative quasicontinua it is shown that the generalized theory leads to a reduced model consisting of only two “virtual” states. The standard Mori approach, on the contrary, would result in a chain of more than two states (probably an infinite number of states). It is shown, furthermore, that the biexponential decay behaviour can rigorously be justified in two different ways. The first model only consisists ofcouplings of intramolecular type. The second model also involves an external thermal bath. The generalized Mori theory, when applied to the second model leads to a non phenomenological justification for the kinetic scheme. It is shown, furthermore, that excitations by strong radiation fields result in a different decay behaviour according to whether the former or the latter scheme is applied.</p></div>","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1981-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(81)80025-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78129358","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: 2
Gases, liquids and solids 气体，液体和固体
Advances in Molecular Relaxation and Interaction Processes Pub Date : 1981-09-01 DOI: 10.1016/0378-4487(81)80021-0
W.J D.Tabor
{"title":"Gases, liquids and solids","authors":"W.J D.Tabor","doi":"10.1016/0378-4487(81)80021-0","DOIUrl":"https://doi.org/10.1016/0378-4487(81)80021-0","url":null,"abstract":"","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1981-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(81)80021-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137407130","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: 127
Proposals for a european collaborative project on the consistent evaluation of molecular dynamics in liquids 关于液体分子动力学一致性评价的欧洲合作项目提案
Advances in Molecular Relaxation and Interaction Processes Pub Date : 1981-09-01 DOI: 10.1016/0378-4487(81)80020-9
M.W. Evans, J. Yarwood
{"title":"Proposals for a european collaborative project on the consistent evaluation of molecular dynamics in liquids","authors":"M.W. Evans,&nbsp;J. Yarwood","doi":"10.1016/0378-4487(81)80020-9","DOIUrl":"10.1016/0378-4487(81)80020-9","url":null,"abstract":"","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1981-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(81)80020-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78507443","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: 13
Association equilibria of some 10-N-alkyl 3,6-bis dimethylamino acridinium salts in aqueous solution 一些10- n -烷基3,6-二甲基氨基吖啶盐在水溶液中的缔合平衡
Advances in Molecular Relaxation and Interaction Processes Pub Date : 1981-08-01 DOI: 10.1016/0378-4487(81)80013-1
Lucia Costantino, Ornella Ortona, Roberto Sartorio, Leonardo Silvestri, Vincenzo Vitagliano
{"title":"Association equilibria of some 10-N-alkyl 3,6-bis dimethylamino acridinium salts in aqueous solution","authors":"Lucia Costantino,&nbsp;Ornella Ortona,&nbsp;Roberto Sartorio,&nbsp;Leonardo Silvestri,&nbsp;Vincenzo Vitagliano","doi":"10.1016/0378-4487(81)80013-1","DOIUrl":"10.1016/0378-4487(81)80013-1","url":null,"abstract":"<div><p>The association equilibrium of three 10-N-alkyl derivatives of acridine orange in aqueous solution has been studied spectrophotometrically. The ΔF<sub>D</sub>, ΔH<sub>D</sub>, and ΔS<sub>D</sub> of dimerization have been computed through the experimental light absorption spectra.</p><p>The results are in favour of the assumption that hydrophobic interactions play a relevant role on the dye stacking in aqueous solution.</p></div>","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1981-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(81)80013-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74783818","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: 8
Molecular motion in liquid toluene and perfluorotoluene from carbon-13 spin-lattice relaxation measurements 基于碳-13自旋晶格弛豫测量的液态甲苯和全氟甲苯的分子运动
Advances in Molecular Relaxation and Interaction Processes Pub Date : 1981-08-01 DOI: 10.1016/0378-4487(81)80014-3
M'Hamed Ali Hamza, Guy Serratrice, Marie-José Stebe, Jean-Jacques Delpuech
{"title":"Molecular motion in liquid toluene and perfluorotoluene from carbon-13 spin-lattice relaxation measurements","authors":"M'Hamed Ali Hamza,&nbsp;Guy Serratrice,&nbsp;Marie-José Stebe,&nbsp;Jean-Jacques Delpuech","doi":"10.1016/0378-4487(81)80014-3","DOIUrl":"10.1016/0378-4487(81)80014-3","url":null,"abstract":"<div><p>Carbon-13 spin-lattice relaxation times and nuclear Overhauser enhancement factors are reported for neat toluene and octafluorotoluene at 301 K. A thorough analysis of the experimental data shows the overall reorientation of these molecules to be that of an axially symmetric ellipsoid, with diffusion coefficients D<sub>⊥</sub> = 6.45 and <figure><img></figure> and D<sub>//</sub> = 14.20 and <figure><img></figure> respectively. The internal rotation of the attached methyl group is consistent with a 60° random jump model. The rotational barrier heights are of the same order of magnitude in both compounds : 5.1 and 6.1 kJ.mol<sup>−1</sup>, thus showing that the decreased mobility of the perfluoromethyl group in perfluorotoluene with respect to that of the methyl substituent in toluene should be traced to inertial and not to structural factors. The dipolar relaxation time of the substituted carbon atom C1 of toluene can be computed from these data and is shown to coincide with the experimental value within 4 % (349 and 363 s).</p></div>","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1981-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(81)80014-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85504481","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: 11
A conductometric detection concentration jump study of the kinetics of association of nickel malonate in water-urea media 丙二酸镍在水-尿素介质中缔合动力学的电导检测浓度跳变研究
Advances in Molecular Relaxation and Interaction Processes Pub Date : 1981-08-01 DOI: 10.1016/0378-4487(81)80017-9
J. Brauner, D. Saar, P. Hemmes ∗
{"title":"A conductometric detection concentration jump study of the kinetics of association of nickel malonate in water-urea media","authors":"J. Brauner,&nbsp;D. Saar,&nbsp;P. Hemmes ∗","doi":"10.1016/0378-4487(81)80017-9","DOIUrl":"10.1016/0378-4487(81)80017-9","url":null,"abstract":"<div><p>A stopped flow study of the kinetics of association of nickel malonate in water-urea has been made. A commercial stopped flow-T-jump instrument was modified for this purpose. Up until 3M urea the rate constants for association depend only upon the solvent dielectric constants. Above 3M, urea enters the first coordinative sphere of nickel (II) and alters the rate. The effect of water activity changes is found to be negligible compared to the changes produced by the variation in dielectric constant.</p></div>","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1981-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(81)80017-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84030934","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
A multi-state barrier model for the multiple dielectric relaxations of bulk amorphous polymers and related glass-forming systems 大块非晶聚合物和相关玻璃形成系统的多重介电弛豫的多态势垒模型
Advances in Molecular Relaxation and Interaction Processes Pub Date : 1981-08-01 DOI: 10.1016/0378-4487(81)80016-7
Vittorio Rosato, Graham Williams
{"title":"A multi-state barrier model for the multiple dielectric relaxations of bulk amorphous polymers and related glass-forming systems","authors":"Vittorio Rosato,&nbsp;Graham Williams","doi":"10.1016/0378-4487(81)80016-7","DOIUrl":"10.1016/0378-4487(81)80016-7","url":null,"abstract":"<div><p>The dynamics of a fluctuation model, broadly based on an earlier model of Bueche, is considered for the motion of a molecule in a glass-forming material. The molecule is assumed to occupy a number of local states in four equivalent manifolds and relaxes by motion between the local states and between manifolds. The dipole-moment correlation function, and hence the dielectric relaxation behaviour, is calculated for a range of relaxation parameters. Two general processes are found being (i) a family of ‘fast’ relaxation modes due to motion between the local states and (ii) a single ‘slow’ relaxation mode due to motion out of one manifold into adjacent manifolds. This pattern is qualitatively in accord with observations of and α processes in glass-forming systems but the observed α-processes are generally rather broader than a ‘slow’ single relaxation-time process which results from the present model.</p></div>","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1981-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(81)80016-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81811162","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: 4
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