Results 271 to 280 of about 279,526 (309)

Paramagnetic probe technique for studying molecular motions in polymers

European Polymer Journal, 1969
Abstract In the paramagnetic probe technique, information about molecular motion in polymers is obtained using stable organic nitroxide radicals incorporated in polymer matrices. Temperature dependence of radical rotation in polymers is well described by Arrhenius equation.
A.M. Wasserman, A.L. Buchachenko, A.L. Kovarskii, M.B. Neiman   +3 more
openaire   +1 more source

Probing the Molecular Interaction of Triazole Fungicides with Human Serum Albumin by Multispectroscopic Techniques and Molecular Modeling

Journal of Agricultural and Food Chemistry, 2013
Triazole fungicides, one category of broad-spectrum fungicides, are widely applied in agriculture and medicine. The extensive use leads to many residues and casts potential detrimental effects on aquatic ecosystems and human health. After exposure of the human body, triazole fungicides may penetrate into the bloodstream and interact with plasma ...
Jing, Zhang, Shulin, Zhuang, Changlun, Tong, Weiping, Liu   +3 more
openaire   +2 more sources

Molecular aggregation of rhodamine 6G probed by optical and electrochemical techniques

Chemical Physics Letters, 1992
Abstract Emission spectra of rhodamine 6G (R6G) aggregates were observed at 77 K both in water and in alcohols. The temperature behavior of emission and excitation spectra, and their excited state lifetimes illustrated that the transition moment of the lower exciton component, μ, for rhodamine 6G aggregates in alcohols is greater than that in water ...
C.T. Lin, A.M. Mahloudji, Li Li, M.W. Hsiao   +3 more
openaire   +1 more source

The Application of the Molecular Probe Technique to a Study of Polymer Crystallization Rates

Rubber Chemistry and Technology, 1971
Abstract Most experimental methods for following the changes in crystallinity of polymeric systems have involved measurement of volume changes, changes in absorption spectra, and changes in optical properties. The basis of the novel method reported here is that the bulk interaction between small concentrations of a “probe” molecule and a ...
D. G. Gray, J. E. Guillet
openaire   +1 more source

New molecular probe technique for the assessment of ultramicroporous structure

Journal of the Chemical Society, Faraday Transactions, 1993
Adsorption–desorption isotherms of nitrogen and especially hydrogen at 18 °C and pressures up to 1 atm have been found to be good molecular probes to assess specifically ultramicroporous carbon structures such as constrictions and other restricted regions that are responsible for the molecular sieving property of these carbons.
openaire   +1 more source

Study of molecular mobility in ultraoriented polypropylene by the spin‐probe technique

Journal of Polymer Science: Polymer Physics Edition, 1985
AbstractThe rotational mobility of nitroxide radicals in polypropylene samples with draw ratios varying from 1 to 18 has been studied between 30 and 110°C by the ESR technique. The drop in the rotational frequency with increasing orientation correlates very well with the behavior of various other measures of molecular mobility such as organic vapor ...
C. L. Choy, W. P. Leung, T. L. Ma
openaire   +1 more source

Detection of methylotrophic bacteria in natural samples by molecular probing techniques

Chemosphere, 1993
Abstract To allow a full understanding of the global methane cycle, the contribution made by microbes as a sink for methane must be investigated. Many methane-oxidizing bacteria present in environmental samples are not easily cultured by using normal microbiological techniques, leading to an underestimate of the numbers of such bacteria in the marine
J.C. Murrell, V. McGowan, D.L.N. Cardy
openaire   +1 more source

The application of the molecular probes gas‐chromatographic technique to the study of polypropylene transitions

Die Makromolekulare Chemie, 1974
AbstractBy means of molecular probes gas‐chromatographic technique we have investigated the first and second order transitions of three stereoisomeric polypropylenes: isotactic, syndiotactic, atactic. The choice of the molecular probe for the detection of the first order transition is not particularly difficult.
Silvana Galassi, Guido Audisio
openaire   +1 more source

Characterization of Nonlinear Molecular Dynamics Using The Double Pump Probe Technique

Frontiers in Optics 2008/Laser Science XXIV/Plasmonics and Metamaterials/Optical Fabrication and Testing, 2008
We performed double pump-probe experiments to study the intra-molecular dynamics of several nonlinear organic dye molecules. The method allows for characterization of triplet states yield and cross-section. Several special cases of molecular dynamics are presented.
Davorin Peceli, Claudiu Cirloganu, Scott Webster, Lazaro A. Padilha, David J. Hagan, Eric W. Van Stryland, Susan Odom, Jon Matichak, Stephen Barlow, Raghunath R Dasari, Seth R. Marder   +10 more
openaire   +2 more sources

The delineation of ionic pathways in organic coatings using a molecular probe technique

Progress in Organic Coatings, 2003
Abstract The mode with which ions enter organic coatings when subjected to corrosive environments remains unresolved. Local electrochemical methods have provided insight into the local nature of the underfilm degradation process. But these local electrochemical methods have not provided conclusive evidence as to whether the transport of water and ...
P Moongkhamklang, S.R Taylor
openaire   +1 more source