Local order in polyelectrolytic solutions detected by magnetic birefringence measurements on the (Tyr‐Glu)  n   copolymer | Zendy

Maret G. | Zendy; Domard A. | Zendy; Rinaudo M. | Zendy

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Local order in polyelectrolytic solutions detected by magnetic birefringence measurements on the (Tyr‐Glu) n copolymer

Author(s) -

Maret G.,

Domard A.,

Rinaudo M.

Publication year - 1979

Publication title -

biopolymers

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.556

H-Index - 125

eISSN - 1097-0282

pISSN - 0006-3525

DOI - 10.1002/bip.1979.360180110

Subject(s) - birefringence , chemistry , polymer , ionic bonding , copolymer , order (exchange) , condensed matter physics , chemical physics , crystallography , nuclear magnetic resonance , optics , ion , physics , organic chemistry , finance , economics

The local electrostatic order in polyelectrolytic solutions has been studied by magnetic birefringence measurements on short segments ( n ∼ 34) of the (Tyr‐Glu) n polypeptide in high magnetic fields up to 13 T. We give evidence that only above a critical polymer concentration do small domains exist within which the polymers show a parallel ordering. This structural order disappears suddenly at ionic strengths above about 5 × 10 −2 M and above a melting temperature of about 50°C.

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