2015年
Preparation, characterization and magnetic behavior of a spin-labelled physical hydrogel containing a chiral cyclic nitroxide radical unit fixed inside the gelator molecule
SOFT MATTER
- 巻
- 11
- 号
- 27
- 開始ページ
- 5563
- 終了ページ
- 5570
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1039/c5sm01216c
- 出版者・発行元
- ROYAL SOC CHEMISTRY
An optically active amphiphilic nitroxide radical compound [(S,S,R)-5a], which contains a paramagnetic (2S,5S)-2,5-dimethyl-2,5-diphenylpyrrolidine-N-oxyl radical group fixed in the inner position together with a hydrophobic long alkyl chain and a hydrophilic (R)-alanine residue in the opposite terminal positions, was found to serve as a low-molecular-weight gelator in H2O to give rise to a spin-labelled physical hydrogel. Characterization of the hydrogel was performed by microscopic (SEM, TEM and AFM) techniques, XRD and SAXS measurements, and IR, UV and CD spectroscopies. The gel-sol transition temperature was determined by EPR spectral line-width (Delta H-pp) analysis. Measurement of the temperature dependence of relative paramagnetic susceptibility (chi(rel)) for the hydrogel and sol phases was achieved by means of the double-integration of VT-EPR spectra.
- リンク情報
- ID情報
-
- DOI : 10.1039/c5sm01216c
- ISSN : 1744-683X
- eISSN : 1744-6848
- PubMed ID : 26073537
- Web of Science ID : WOS:000357192200018