Structure and Dynamics of Perfluorinated Ionomers in Aqueous Solutions and Swollen Membranes Based on Simulations of ESR Spectra from Spin Probes

1995 ◽  
Vol 99 (1) ◽  
pp. 313-319 ◽  
Author(s):  
Ewa Szajdzinska-Pietek ◽  
Jan Pilar ◽  
Shulamith Schlick
Keyword(s):  
Aqueous Solutions ◽  
Esr Spectra ◽  
Spin Probes ◽  
Structure And Dynamics

scholarly journals Water confined in solutions of biological relevance

2020 ◽  
Vol 92 (10) ◽  
pp. 1563-1574
Author(s):  
Marie-Claire Bellissent-Funel
Keyword(s):  
Aqueous Solutions ◽  
Bulk Water ◽  
Biological Macromolecules ◽  
Organic Solutes ◽  
Confined Water ◽  
The Past ◽  
Structure And Dynamics ◽  
Biological Relevance ◽  
The Stability

AbstractIn many relevant situations, water is not in its bulk form but instead attached to some substrates or filling some cavities. We shall call water in the latter environment confined water as opposed to bulk water. It is known that the confined water is essential for the stability and the function of biological macromolecules. In this paper, we provide a review of the experimental and computational advances over the past decades concerning the understanding of the structure and dynamics of water confined in aqueous solutions of biological relevance. Examples involving water in solution of organic solutes (cryoprotectants such as dimethylsulfoxide (DMSO), sugars such as trehalose) are provided.

Detection of Semiquinone Radicals of N-Acylcatecholamines in Aqueous Solution

1985 ◽  
Vol 40 (7-8) ◽  
pp. 535-538 ◽  
Author(s):  
Martin G. Peter ◽  
Hartmut B. Stegmann ◽  
Hoang Dao-Ba ◽  
Klaus Scheffler
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Esr Spectra ◽  
Semiquinone Radicals ◽  
Spin Stabilization ◽  
Michael Type Addition ◽  
Nitrogen Nucleophiles

Abstract ESR-spectra were recorded during the oxidation of N-acetyldopamine and N-β-alanyldopamine in aqueous solutions. Semiquinone radicals were detected under conditions of spin stabilization by Zn2+ ions. The appearance of the spectra was the same in the presence or in the absence of proteins. No evidence was obtained for the formation of products that could have arisen eventually from intermolecular Michael-type addition of nitrogen nucleophiles.

scholarly journals Structure and Dynamics of Aqueous Solutions of Electrolytes in Confined Space

2012 ◽  
Vol 81 (Suppl.A) ◽  
pp. SA025
Author(s):  
Yoshimasa Yamakawa ◽  
Masakazu Matsumoto ◽  
Hideki Tanaka
Keyword(s):  
Aqueous Solutions ◽  
Confined Space ◽  
Structure And Dynamics ◽  
Solutions Of Electrolytes
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