Synthesis and Characterization of Poly(ferrocenylsilane)s and Their Charge Transfer Salts

• Published in: Macromolecules 2004-12, Vol.37 (26), p.9785-9792
• Main Authors: Tang, Hongding, Liu, Yunyang, Chen, Xingguo, Qin, Jingui, Inokuchi, Makoto, Kinoshita, Minoru, Jin, Xianbo, Wang, Zhiyuan, Xu, Binfu
• Format: Article
• Language: English
• Subjects: Applied sciences; Exact sciences and technology; Inorganic and organomineral polymers; Physicochemistry of polymers; Preparation
• ISSN: 0024-9297; 1520-5835
• DOI: 10.1021/ma0491661

A novel series of poly(ferrocenylsilane)s (PFSs), i.e., poly(ferrocenylmethyl(N-ethyl-N-phenyl)propylsilane) (4a), poly(ferrocenylmethyl(3-(4-methoxylphenyl)propylsilane)) (4b), and poly(ferrocenylmethyl(3-(9-carbazolyl)propylsilane)) (4c), were synthesized by transition-metal-catalyzed ring-opening polymerization (ROP) of the corresponding substituted [1]silaferrocenophanes (3a − c). They were characterized by 1H and 13C NMR, FT-IR, elemental analysis, GPC, DSC, TGA, and cyclic voltammetry. Attempts have been made to dope PFSs 4 with 7,7,8,8-tetracyano-p-quinodimethane (TCNQ), chloranil (CA), tetracyanoethylene (TCNE), and iodine. Only iodine and TCNE were able to form charge transfer salts 5a − c and 6a − c, respectively. FT-IR, elemental analysis, and Mössbauer spectra results showed partially oxidized states for 5a − c and 6a − c, and magnetic measurements by a SQUID magnetometer demonstrated paramagnetic behavior with significant antiferromagnetic interactions for these complexes over a wide temperature range.