New Organometallic Polymers by Polycondensation of Ferrocene and Siloxane Derivatives

Abstract

A series of condensation polymers (polyesters and polyamides) of ferrocene and siloxane derivatives have been synthesized and characterized. Thus, 1,1′-di(chlorocarbonyl)ferrocene (CAFc) and four different siloxane derivativess1,3-bis(aminopropyl)tetramethyldisiloxane) (AP 0 ), R,ω-bis(3-aminopropyl)oligodimethylsiloxane (AP), 1,3-bis(hydroxypropyl)tetramethyldisiloxane (HP 0 ), and 1,3-bis(p-hydroxyphenyleneazomethine-3-propyl)tetramethyldisiloxane (HBS 0 )swere used as monomers for this purpose. A model polyamide was prepared by polycondensation of oxalyl chloride with AP 0 . This was analyzed as such or doped with ferrocene in order to appreciate the influence of the ferrocene units by comparison with the corresponding copolymer containing chemically linked ferrocene in the main chain. Thermal, mesomorphic, viscometric, and solubility behaviors of the obtained compounds were studied. Molecular masses were estimated by GPC. The polymers were investigated by cyclic voltammetry and UV-vis absorption spectroscopy in order to evaluate the redox properties and photochemical behavior.

Study on the electrochemical, thermal, and liquid crystalline properties of poly(diethyleneglycol 1,1′-ferrocene dicarboxylate)

“…These findings assure the previously obtained conclusion by Singh et al which states that the presence of the ferrocene units in the polymers contributed to their liquid crystallinity and also the ferrocene units were mesogenic [2,57].…”

“…Furthermore, the aromatic C-H bending vibration and Fe-Cp stretching vibration appear at 802 and 492 cm À1 , respectively. The FTIR spectrum shows the characteristic peaks of a ferrocene-based polyester and the spectrum coincides with the literature [2,[37][38][39][40][41][42][43].…”

“…The introduction of metal atoms in the structure of polymers is a promising method to prepare new processable materials due to their unusual physical and chemical properties that are different from the original ones and thus these new materials can be used in wide applications in many areas [1,2]. In addition, the presence of metal atom imparts the polymer chains new physical and chemical properties including redox, electronic, optical, and magnetic properties [3,4].…”

Solid‐state 13C, 15N and 29Si NMR characterization of block copolymers with CO2 capture properties

“…These paramagnetic impurities are typical ferricinium derivatives, which are readily formed as a result of oxidation of ferrocene compounds. [40,41] C CP/MAS NMR spectra of these copolymers also reveal a sharp resonance line at~1.4 ppm, which is assigned to the carbon sites of the methyl groups bound to silicon atoms.…”

Synthesis and Properties of Poly(ferrocenylsilane)s Containing Si-Vinylene Units in the Main Chain

“…Poly(ferrocene) is one of the most synthesized and studied metallocene containing polymers due to their characteristic features derived from the ferrocene units in the polymer. The main chain type poly(ferrocene)s have been synthesized by ring opening polymerization, condensation polymerization, coupling reaction, and so on (for examples Bellas & Rehahn, 2007;Miles, Ward, & Foucher, 2009;Miles, Ward, & Foucher, 2010;Wang, Huo, Ding, & Tan, 2008;Huo, Wang, Yu, Deng, Zhou, & Yang, 2007;Cazacu, Munteanu, Racles, Vlad, & Marcu, 2006;Caracu, Vlad, Marcu, Racles, Airinei, & Munteanu, 2006;Southard & Curti, 2001). Poly(ferrocenylsilane)s have been widely synthesized by ring opening polymerization of Si bridged ferrocene compounds, as shown in Scheme 1 (for example Bellas & Rehahn, 2007).…”