Electrical conductance of hydrophobic membranes or what happens below the surface.

Electrical conductance of hydrophobic membranes or what happens below the surface. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Electrical conductance of hydrophobic membranes or what happens below the surface. Abstract Text:

Ivan Vlassiouk,Fabian Rios,Sean A Vail,Devens Gust,Sergei Smirnov,

Nanoporous alumina membranes rendered hydrophobic by surface modification via covalent attachment of hydrocarbon or fluorocarbon chains conduct electricity via surface even when the pores are not filled with electrolyte. The resistance is many orders of magnitude higher than for electrolyte-filled membranes and does not depend on the electrolyte concentration or pH, but it does depend on the type of hydrophobic monolayer and its density. The corresponding surface resistance varies from greater than 10(18) Omega per square to less than 3 x 10(9) Omega per square. When the hydrophobic monolayer contains a small proportion of photoactive spiropyran that is insufficient to switch the surface to hydrophilic after spiropyran photoisomerization to the merocyanine form, the membrane resistance also becomes light-dependent with a reversible increase of surface resistance by as much as 15%. Surface conduction is ascribed to hydration and ionization of the alumina surface hydroxyls and the ionizable groups of the hydrophobic surface modifiers.

Electrical conductance of hydrophobic membranes or what happens below the surface. Publishing Authors By Initials

I Vlassiouk,F Rios,SA Vail,D Gust,S Smirnov,

For similar natural sciences: time: time factors research abstracts see: natural sciences: time: time factors research

PUBMED ID PMID:

MEDLINE DATE:

Electrical conductance of hydrophobic membranes or what happens below the surface. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Langmuir : the ACS journal of surfaces and colloid

VOLUME: 23

Page Numbers: 7784-92

Journal Abbreviation:

ISSN: 0743-7463

DAY: 2

MONTH: 06

YEAR: 2007

Electrical conductance of hydrophobic membranes or what happens below the surface. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 9882736

Electrical conductance of hydrophobic membranes or what happens below the surface. Keywords Mesh Terms:

KEYWORDS: Time Factors

MESH TERMS: chemistry

Chemical & Substance for Abstract: Electrical conductance of hydrophobic membranes or what happens below the surface. Information

Substance Name: spiropyran

Registry Number: 0

Grant and Affiliation Information for Electrical conductance of hydrophobic membranes or what happens below the surface.

AFFILIATION: Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico 88003, USA.

Country: United States

AGENCY: United States NIGMS

GRANT: GM08136

ACRONYM: GM

MEDLINETA: Langmuir

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Electrical conductance of hydrophobic membranes or what happens below the surface Related Publications

• Application of anodized aluminum in fluorescence detection of biological species.
• Electrical conductance of hydrophobic membranes or what happens below the surface.
• Factor Xa protects cultured hippocampal neurons from glutamate toxicity.
• Flow-through lipid nanotube arrays for structure-function studies of membrane proteins by solid-state NMR spectroscopy.
• High-frequency Bragg gratings in a photothermorefractive glass.
• Hydrothermally shrunk alumina nanopores and their application to DNA sensing.
• Post-processing of EPR spectra by convolution filtering: Calculation of a harmonics' series and automatic separation of fast-motion components from spin-label EPR spectra.
• Surface-assisted transient displacement charge technique. I. Photoinduced charge transfer in self-assembled monolayers.
• Surface-assisted transient displacement charge technique. II. Effect of gases on photoinduced charge transfer in self-assembled monolayers.
• Triplet energy transfer insight in coordination of unsaturated hydrocarbons by d(0) bent metallocenes (Zr, Hf).
• [Achievements and perspectives in the therapy and prevention of noncommunicable internal diseases in animals]
• [Apparatus for measurement of deflections of electrocardiograms.]
• [Determining residual amounts of streptomycin in honey and its hygienic assessment]
• [Disinfection in American and European apian foul brood]
• [Drug administration through cisternal puncture.]
• [Effect of ultraviolet irradiation and vitamin D2 on bulls fed on pressed pulp]
• [Intracavital and parietal digestion in normal and dyspeptic calves]
• [Intravital examination of bone marrow in animals]
• [Labor management, without cephalic flexion and protection of the perineum.]
• [Medical science and public health practice.]
• [Modification of the pupil in internal diseases.]
• [On ketosis in cows]
• [Pathogenic effect of helminths on the swine organism]
• [Pathogenic therapy in complications of foot-and-mouth disease]
• [Preventive treatment and its tasks]
• [Removing exudate and solutions from the cow's uterine cavity]
• [Serge? Ivanovich Smirnov]
• [The importance of controlling the spreding of suppurative bee diseases in wax plants]
• [The importance of the time of insemination of cows in prevention of sterility]
• [Volatile fatty acids in the rumen and subclinical ketosis in ruminants]