Electronic spectra of hindered silyl and organo-substituted polysilylenes

Synthesis and characterization of functional polysilanes [RMe2Si(CH2)x(Me)Si]n (R = 2‐Fu, 5‐Me‐2‐Fu, 2‐Th, 4‐Me‐2‐Th; x = 2, 3) with appended furyl/thienyl groups on the carbosilyl side chains and their application in the generation and stabilization of palladium nanoparticles

“…The polymer supported palladium nanoparticles obtained herein can thus be considered as important addition to a few previously studied examples of polysilane-palladium nanoassemblies. 2 In conclusion, the results obtained herein demonstrate the scope of Wurtz coupling reaction in the synthesis of functional, high molecular weight polysilanes [RMe 2 Si(CH 2 ) x (Me)Si] n [x ¼ 2, 3; R ¼ 2-Fu (1, 2), 5-Me-2-Fu (3, 4), 2-Th (5, 6), 4-Me-2-Th (7,8)] bearing furyl/thienyl-substituted carbosilyl moieties. The results obtained from the reactivity behavior of polysilane 2 toward palladium acetate implicate these polymers as potential candidates for the generation and stabilization of palladium nanoparticles.…”

“…One of the major drawbacks of the Wurtz coupling approach is the intolerance of functional monomers to the harsh and reducing conditions involved, thus restricting its use to the synthesis of functional polysilanes bearing ether,5, 6 amino,6 ferrocenyl,7 or silyl groups8 on the appended side chains. Hayase and coworkers have reported the synthesis of polysilanes with phenolic side chain groups by protection of the phenolic functional group in the monomer via O‐silylation and subsequent deprotection of the silyl group in the resulting polysilanes 9.…”

Properties and applications of polysilanes

“…In general, the polysilanes show high fluorescence emission quantum yields (0.1–0.7) in solution . However, incorporation of silyl groups adjacent to the main chain, such as trimethyl silyl groups, results in lower fluorescence quantum yields …”

“…[19] However, incorporation of silyl groups adjacent to the main chain, such as trimethyl silyl groups, results in lower fluorescence quantum yields. [57] Inspired from siloxene, Hiraoka et al prepared an oxygen-crosslinked polysilane on annealing the precursor polysilane in air. [58] The un-crosslinked polysilane showed a photoluminescence peak at 360 nm and a broad band in the visible region at 440 nm.…”

Synthesis and Characterization of Multifunctional Chiral and Photoactive Organic-Inorganic Block Copolymers of Poly(methylphenylsilane) with (R)-N-(1-phenylethyl)methacrylamide, Disperse Red 1 Methacrylate and Their optical and Photophysical Properties

“…The functional materials used in field of semiconductors, precursor for Si-C synthesis, radical photoinitiator and sensors [7]. The direct synthesis of functional polysilanes restricted due to drastic reaction condition (high temperature refluxing of organodichlorosilane monomer along with sodium in toluene) of their synthesis via Wurtz coupling reaction [8][9][10]. At this refluxing temperature no functional groups sustain with polysilanes.…”