13C relaxation measurements of molecular motion in micellar solutions
β Scribed by R.T. Roberts; C. Chachaty
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 285 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Measurements
have been made of the 13C nuclear magnetic resonance longitudinal relaxation time T1 in micellar solutions of sodium kauryl sulphate with different concentration of added sodium chloride. The purpose of the experiment was to see what effect added electrolyte had on the motion of the paraffin chains. It is shown that the methylene group next to the polar head gains more freedom as the electrolyte concentration is increased. The molecular motions inside the micelle do not change.
π SIMILAR VOLUMES
Natural-abundance 13C T1 and NOE measurements have been made for backbone and side-chain sites in peptide fragments of transthyretin (TTR 10-20, TTR 105-115, and TTR 105-115Met111) at 13C Larmor frequencies of 125 and 75 MHz. These peptides have previously been implicated in the formation of amyloid
Head-to-head polystyrene was studied by NMR relaxation measurements in solution and these measurements were compared with those for head-to-tail polystyrene. By measuring the relaxation of the ortho and meta carbons of the phenyl rings of the polystyrenes, it was found that the head-to-head polystyr