Segmental order parameters in a nonionic surfactant lamellar phase studied with 1H–13C solid-state NMR | Zendy

Tiago Mendes Ferreira | Zendy; Bruno Medronho | Zendy; Rachel W. Martin | Zendy; Daniel Topgaard | Zendy

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Segmental order parameters in a nonionic surfactant lamellar phase studied with 1H–13C solid-state NMR

Author(s) -

Tiago Mendes Ferreira,

Bruno Medronho,

Rachel W. Martin,

Daniel Topgaard

Publication year - 2008

Publication title -

physical chemistry chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.053

H-Index - 239

eISSN - 1463-9084

pISSN - 1463-9076

DOI - 10.1039/b807693f

Subject(s) - pulmonary surfactant , phase (matter) , lamellar structure , nonionic surfactant , lamellar phase , solid state , solid state nuclear magnetic resonance , materials science , carbon 13 nmr , chemistry , nuclear magnetic resonance , crystallography , stereochemistry , organic chemistry , physics , biochemistry

A lyotropic nonionic lamellar system composed of pentaethyleneglycol mono n-dodecyl ether and D(2)O was studied using natural abundance (13)C NMR under magic-angle spinning. Applying a two-dimensional recoupling method proposed by Dvinskikh (R-PDLF), (1)H-(13)C dipolar couplings were estimated over a range of temperatures (300-335 K), thus enabling analysis of structural changes in the liquid crystalline system. The results obtained are used to correlate the conformation and mobility of local sites in the surfactant molecule with overall changes in the lamellar structure.

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