Mobility of Spin Probes in Quaternized Poly(4-vinylpyridine) Membranes
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چکیده
منابع مشابه
PES/Quaternized-PES Blend Anion Exchange Membranes: Investigation of Polymer Compatibility and Properties of the Blend
Polyethersulfone (PES)-based anion exchange blend membranes were prepared from quaternized-PES (Q-PES) and N-Methyl-2-pyrrolidone (NMP) casting solutions with water as coagulant via non-solvent induced phase inversion. The compatibility of the blend system was investigated through thermodynamic studies while membrane formation was determined using the cloud point techni...
متن کاملThe study of hydrocarbon chain mobility in membrane systems using spin-label probes.
The fluid nature of certain cell membranes and their relationship to growth temperature [ 1,2] is of particular interest. Highly fluid regions in cell membranes have now been demonstrated by both NMR [3] and ESR spectroscopy [4,5]. The latter technique makes use of spin labels which are incorporated in various ways into the membrane system. In a recent discussion, Crick [6] raised two points wh...
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Lipid and protein lateral mobility is essential for biological function. Our theoretical understanding of this mobility can be traced to the seminal work of Saffman and Delbrück, who predicted a logarithmic dependence of the protein diffusion coefficient (i) on the inverse of the size of the protein and (ii) on the "membrane size" for membranes of finite size [Saffman P, Delbrück M (1975) Proc ...
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Electron spin resonance (ESR) studies were carried out for 14N-labeled deuterated 3-methoxy-carbonyl-2,2,5,5-tetramethyl-pyrrolidine-1-oxyl (MC-PROXYL) and 3-carboxy-2,2,5,5-tetramethyl-1-pyrrolidin-1-oxyl (carboxy-PROXYL) in pure water and various concentrations of liposomal solutions by using 300 MHz ESR spectrometer. The ESR parameters such as the line width, hyperfine coupling constant, rot...
متن کاملSpin-Labeled Membranes
In the next few minutes I shall present a very brief discussion of what the spin-label technique is, and how it may be used to study biological membranes, x, 2 A "spin label" is a synthetic organic paramagnetic free radical. Most spin
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ژورنال
عنوان ژورنال: Polymer Journal
سال: 1987
ISSN: 0032-3896,1349-0540
DOI: 10.1295/polymj.19.737