1997
DOI: 10.1016/s0014-3057(97)00044-x
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Cationic polymerization photochemically and thermally induced by phenothiazine cation radical salts

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Cited by 22 publications
(14 citation statements)
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“…At this point, it is important to notice that the appearance of a broad absorbance band at the 600 nm region in TR-containing samples submitted to UV irradiation could result from the contribution of the phenothiazine oligomerization rather than the stable cation radical. Similar spectrum was previously observed by Abu-Abdoun & Ledwith, 1997, after photochemical polymerization of the phenothiazine nucleous (PHT) [28,36]. Therefore, the photo-induced oligomerization of TR from the reaction of cation radical derivatives might also prevent the contribution of TR radicals for cytochrome c damage induced by UV light irradiation.…”
Section: Resultssupporting
confidence: 80%
“…At this point, it is important to notice that the appearance of a broad absorbance band at the 600 nm region in TR-containing samples submitted to UV irradiation could result from the contribution of the phenothiazine oligomerization rather than the stable cation radical. Similar spectrum was previously observed by Abu-Abdoun & Ledwith, 1997, after photochemical polymerization of the phenothiazine nucleous (PHT) [28,36]. Therefore, the photo-induced oligomerization of TR from the reaction of cation radical derivatives might also prevent the contribution of TR radicals for cytochrome c damage induced by UV light irradiation.…”
Section: Resultssupporting
confidence: 80%
“…Recently, we reported on the cationic polymerization of epoxide and vinyl monomers initiated by cation radical salts of phenothiazine derivatives (salt 1) [5], and N, N, N,N-tetraphenyl-p-phenelenediamine (salt 2) [6].…”
Section: Ar 2 I + X -----------------> Armentioning
confidence: 99%
“…After polymerization, the polymer was precipitated into methanol, filtered, dried, and weighed. Polymer yield percentage and rate of polymerization were determined gravimetrically [5,6]. The number averaged molecular weight (Mn) of the isolated polymer was measured in toluene on a Hewlett Packard (Model 501), and High-Speed Membrane Osmometer in toluene.…”
Section: Tetrahydrofuranmentioning
confidence: 99%
“…cently, also phenothiazine radical cation salts were used as cationic polymerization initiators 12) .…”
Section: Cationic Photoinitiatorsmentioning
confidence: 99%
“…The methoxyphenylmethyl radical generated in this way is oxidizable by 1 + (reaction (12)). The resulting carbocation functions as cationic initiator.…”
Section: Benzoin Methyl Ether/1 + Pf 6 -mentioning
confidence: 99%