ISSN:
0887-624X
Keywords:
cyclopolymerization
;
ferrocenophane
;
cyclophane polymer
;
poly(vinylferrocene)
;
non-conjugated conducting polymer
;
polymer electrochemistry
;
redox active polymer
;
metallocene polymer
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Radical cyclopolymerization of 3-phenyl[5]ferrocenophane-1,5-dimethylene (2) and copolymerization with styrene gave polymers (3 and 4) with [3]ferrocenophane moieties pendant to the backbone. Cyclic voltammetry (CV) on polymer 3 in CH2Cl2 showed two oxidation waves at -0.13 and +0.05 V (versus ferrocene/ferrocenium) and CV on copolymer 4 showed one oxidation potential at -0.03 V. CV on 3 in dimethylacetamide showed only one oxidation potential at -0.10 V. Near-IR spectroscopy of partially oxidized 3 showed a broad intervalence band at ca. 2000 nm, indicative of low-energy barriers to electron hopping. Conductivity measurements on 3 and poly(vinylferrocene) (PVFc) oxidatively doped with iodine vapors under an argon atmosphere showed a maximum conductivity ca. 5 × 10-5 S/cm before the samples cracked, while 4 exhibited a maximum conductivity of 1.6 × 10-6 S/cm. On iodine doping under ambient conditions, polymers 3, 4, and PVFc showed maximum conductivities of 7.6 × 10-4, 9.5 × 10-5, and 5.5 × 10-5 S/cm, respectively. Conductivity measurement were also performed on samples of 3+BF4- with oxidation levels ranging from 8 to 56%. Conductivities of these samples ranged from ca. 10-10 to 10-9 S/cm under vacuum and ca. 10-6 S/cm under ambient conditions, indicating that atmospheric moisture has a strong effect on the conductivity. © 1997 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 35: 3365-3376, 1997
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
