ARM LENGTH EFFECT ON SYNTHETIC CHEMISTRY OF FULLERENE-CONNECTED URETHANE-ETHER STAR-POLYMERS

Authors
TSENG SM WANG LY HSIEH KH LIAU WB CHIANG LY
Citation
Sm. Tseng et al., ARM LENGTH EFFECT ON SYNTHETIC CHEMISTRY OF FULLERENE-CONNECTED URETHANE-ETHER STAR-POLYMERS, Fullerene science and technology, 5(7), 1997, pp. 1313-1324
Citations number
18
Journal title
Fullerene science and technology → ACNP
ISSN journal
1064122X
Volume
5
Issue
7
Year of publication
1997
Pages
1313 - 1324
Database
ISI
SICI code
1064-122X(1997)5:7<1313:ALEOSC>2.0.ZU;2-2
Abstract
A series of star-shaped polyurethanes were synthesized by the use of f ullerenol-derived polyols as the anchoring agents and were characteriz ed by both spectrometric and gel permeation chromatographic techniques . Under similar reaction conditions, the number of attached linear pol yurethane arms per C-60 decreased as the molecular weight of each isoc yanated polymer arm precursor increased. Interestingly, the polydisper sity of all star-shaped polyurethanes synthesized was found to be much narrower than that of the corresponding parent arms, independent of t he linking efficiency.