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Polymerization and conformational studies of poly(trans-3-ethyl-D and L-proline) (1987)

Tiba, Omar ; Overberger, C. G.

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part A: Polymer Chemistry 25 (1987), S. 2941-2952

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ISSN: 0887-624X

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Poly(L-trans-3-ethylproline), L-PT3EP, and poly(D-trans-3-ethylproline), D-PT3EP, were prepared by ring opening polymerization of the corresponding N-carboxyanhydrides (NCA) using triethylamine as an initiator. Using circular dichroism spectroscopy, it was shown that the incorporation of an ethyl group at the 3 position of the pyrrolidine ring caused a noticeable change in the conformational behavior of the polymer in solution. The ethyl group limited to some extent rotation of the polymer chain around the C——CO bond and prevented the mutarotation between the two forms found in poly-L-proline polymers.

Additional Material: 8 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/pola.1987.080251102

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