## Abstract A polarimetric electric‐field‐jump relaxation apparatus is described and used to determine the relaxation spectrum for the helix–coil transition of poly(α,L‐glutamic acid) in water at 24°C. A maximum relaxation time of 1.7 μc occurs at the transition midpoint (pH = 5.9) yielding a rate
Enhanced helicity of poly(α-L-glutamic acid) in aqueous tetraalkylammonium chloride
✍ Scribed by H. Kanehiro; J. Komiyama; O. Morikiyo; T. Iijima
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1976
- Tongue
- English
- Weight
- 170 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0006-3525
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It is well known that poly(a-cglutamic acid) (PLGA) undergoes a helix to randomcoil transition in aqueous media when the macromolecule is charged by titration with base. This behavior is clearly revealed by studies of optical properties [i.e., ultraviolet absorption and optical rotatory dispersion (
## Abstract Unexpected fluorescence of poly(α,β‐L‐malic acid) (α,β‐PMA) without traditional fluorophore was observed firstly. This fluorescent polymer was synthesized via melt polycondensation of L‐malic acid. The polymer was characterized by gel permeation chromatography (GPC), nuclear magnetic re