2011
DOI: 10.1002/macp.201100440
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Branched and Network Polysilanes as Cleavable Macrophotoinitiators

Abstract: The branched polysilane [(PhMeSi)0.8‐co‐(Et3Si(CH2)2Si)0.2]n (PS‐1) as well as the network polysilane [Et3Si(CH2)3Si]n (PS‐2) have been investigated as new polymerization photoinitiating structures. The behavior of PS‐1 was compared with that of [(PhMeSi)]n to demonstrate the enhancement of the photoinitiation for the branched system. As a result of the Si–Si bond cleavage under light and the formation of reactive silyl radicals or silyl cations, these compounds act as efficient photoinitiators (PIs) for free … Show more

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Cited by 9 publications
(7 citation statements)
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“…Polysilane has been an exceptional example of polymeric PIs due both to its simple preparation and its multiple desirable properties . In the absence of organic catalyst, chlorosilanes can be polymerized by means of a Wurtz coupling, forming polysilanes with varied chain lengths and configurations, which can generate multiple primary radicals . However, one of the major issues is the synthetic procedure which could drastically impact the interest of the PI.…”
Section: Figurementioning
confidence: 99%
See 1 more Smart Citation
“…Polysilane has been an exceptional example of polymeric PIs due both to its simple preparation and its multiple desirable properties . In the absence of organic catalyst, chlorosilanes can be polymerized by means of a Wurtz coupling, forming polysilanes with varied chain lengths and configurations, which can generate multiple primary radicals . However, one of the major issues is the synthetic procedure which could drastically impact the interest of the PI.…”
Section: Figurementioning
confidence: 99%
“…[11] In the absence of organic catalyst, chlorosilanes can be polymerizedb ym eans of a Wurtz coupling, formingp olysilanesw ith varied chain lengths and configurations, which can generate multiple primaryr adicals. [12] However,one of the major issues is the synthetic procedure which could drastically impact the interest of the PI. Therefore, we still require af acile methodt os ynthesize highmolecular-weight PIs.…”
mentioning
confidence: 99%
“…聚硅烷是一类以硅-硅键为骨架的有机 硅高分子, 在紫外区具有高的摩尔吸光系数, 而且在 紫外光照下能高效产生硅自由基引发光聚合 [16] . 由 于其突出的紫外光引发聚合性能, 油溶性 [ 1 7 ] 、水 性 [18,19] 、超支化聚硅烷光引发剂 [20] 被相继开发出来. [16,28] .…”
Section: 引言unclassified
“…New reactive silanes could also be used as radical reducing agents or type II coinitiators . Multifunctional silanes (e.g., polysilanes) have also been reported as macrophotointiators for free radical polymerization . By studying the chemical bond dissociation energy of SiH bonds for various silanes and the reactivity of silyl radicals toward the addition to enes, tris(trimethylsilyl)silane (TTMSSiH) has been identified as the most suitable component .…”
Section: Introductionmentioning
confidence: 99%
“…[21,22] Multifunctional silanes (e.g., polysilanes) have also been reported as macrophotointiators for free radical polymerization. [23,24] By studying the chemical bond dissociation energy of SiH bonds for various silanes [25] and the reactivity of silyl radicals toward the addition to enes, [26] tris(trimethylsilyl) silane (TTMSSiH) has been identified as the most suitable component. [25] However, aside from its great ability to undergo radical silane-ene reactions, multifunctional components based on TTMSSiH are not easily accessible.…”
Section: Introductionmentioning
confidence: 99%