Photophysics and Photochemistry of Polysilanes for Electronic Applications

Dostie, Starr; Aktik, C.; Scarlete, Mihai

doi:10.1002/9780470604090.ch6

Cited by 2 publications

(3 citation statements)

References 118 publications

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“…Polysilanes continue to be of interest for their intriguing electronic and optical properties, which arise from σ conjugation along their all-Si backbones . Practical application of these intriguing materials in device technologies remains undeveloped, however, because of the facile oxidative and photolytic degradation of the catenated silicon chains. ,, Our interest in designing more stable polysilane architectures has focused on catalytic dehydrocoupling routes to oligo- and polysilanes that contain Si–H bonds in the repeat units, on the premise that the enormous, established arsenal of organic Si–H activation chemistry could then be exploited in postpolymerization modification reactions.…”

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confidence: 99%

Borane-Catalyzed Si–H Activation Routes to Polysilanes Containing Thiolato Side Chains

2013

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Dehydrocoupling and hydrosilation reactions of the Si−H bonds in poly(phenylsilane) catalyzed by B(C 6 F 5 ) 3 allow the preparation of new polymers containing both Si−H and Si−SR side chains. This postpolymerization modification takes place without any observable competing Si−Si bond cleavage, unlike other Lewis acid, transition-metal, or radical mediated routes. The −SR-functionalized polymers have been characterized by GPC, IR, UV−vis, elemental analysis, and 1 H, 13 C, and 29 Si NMR.

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confidence: 99%

Borane-Catalyzed Si–H Activation Routes to Polysilanes Containing Thiolato Side Chains

2013

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“…The laser excitation wavelength was selected by taking into account some particular properties of polysilanes. It is known that exposure of a polysilane solution to thermal or visible light irradiation produces branching of the silicon skeleton . This increases the dimensionality of the σ‐electron degree of conjugation and induces different optical properties from those of the linear structure .…”

Section: Resultsmentioning

confidence: 99%

“…It is known that exposure of a polysilane solution to thermal or visible light irradiation produces branching of the silicon skeleton. 46 This increases the dimensionality of the σ -electron degree of conjugation and induces different optical properties from those of the linear structure. 47 The absorption and emission spectra have completely different profiles and quite a long tail in the visible region of the absorption spectrum is present.…”

Section: Resultsmentioning

confidence: 99%

Surface‐enhanced fluorescence of in situ synthesized polysilanesilver nanoparticles

Săcărescu¹,

Taran²,

Donose³

et al. 2012

Polymer International

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To produce surface plasmons, silver nanoparticles are synthesized in situ in a pseudo‐template system based on polyhydrosilanes. Adsorption on the silver nanoparticle surface produces a thin layer of polymer with properties different from those of bulk polysilane. The metal‐adsorbed polymer layer serves as a spacer between the polysilane fluorophore and the plasmonic nanoparticle. This prevents quenching of the polysilane emission and leads to a strong surface‐enhanced fluorescence through coupling of surface plasmons having a resonance frequency that matches the emission frequency of the polymeric emitter. Copyright © 2012 Society of Chemical Industry

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Photophysics and Photochemistry of Polysilanes for Electronic Applications

Cited by 2 publications

References 118 publications

Borane-Catalyzed Si–H Activation Routes to Polysilanes Containing Thiolato Side Chains

Borane-Catalyzed Si–H Activation Routes to Polysilanes Containing Thiolato Side Chains

Surface‐enhanced fluorescence of in situ synthesized polysilanesilver nanoparticles

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