Abstract
Absorption, ESR and photoluminescence of hexakis(pentamethyldisilyl)disilane [(Me3SiMe2Si) 3Si]2 1 were studied. Two branched polysilyl radicals were observed by ESR spectroscopy under UV irradiation of 1. The smaller 'star' radical (Me3SiMe2Si) 3Si 2 has half-lifetime 1 s whereas the bigger one (Me3SiMe2Si)3Si (Me3SiMe2Si)2Si 3 has a half-lifetime about 50 min. During irradiation the reaction 1 → 2 + 3 followed by 2 + 3 → products (P) occur. The behavior of the 300 nm absorption of radical 3 during the irradiation was found to be similar to the radical 3 appearance measured by ESR. The silane (Me3SiMe2Si)3SiH was found as main product (∼50% yield) of the photo-cleavage of the disilane 1.
| Original language | English |
|---|---|
| Pages (from-to) | 257-263 |
| Number of pages | 7 |
| Journal | Chemical Physics Letters |
| Volume | 374 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - Jun 11 2003 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Spectroscopy
- Atomic and Molecular Physics, and Optics
Cite this
Spectroscopic studies of the role of silyl radicals in photolysis of polysilanes. / Azinović, Davorka; Bravo-Zhivotovskii, D.; Bendikov, Michael; Apeloig, Y.; Tumanskii, B.; Vepřek, S.
In: Chemical Physics Letters, Vol. 374, No. 3-4, 11.06.2003, p. 257-263.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Spectroscopic studies of the role of silyl radicals in photolysis of polysilanes
AU - Azinović, Davorka
AU - Bravo-Zhivotovskii, D.
AU - Bendikov, Michael
AU - Apeloig, Y.
AU - Tumanskii, B.
AU - Vepřek, S.
PY - 2003/6/11
Y1 - 2003/6/11
N2 - Absorption, ESR and photoluminescence of hexakis(pentamethyldisilyl)disilane [(Me3SiMe2Si) 3Si]2 1 were studied. Two branched polysilyl radicals were observed by ESR spectroscopy under UV irradiation of 1. The smaller 'star' radical (Me3SiMe2Si) 3Si 2 has half-lifetime 1 s whereas the bigger one (Me3SiMe2Si)3Si (Me3SiMe2Si)2Si 3 has a half-lifetime about 50 min. During irradiation the reaction 1 → 2 + 3 followed by 2 + 3 → products (P) occur. The behavior of the 300 nm absorption of radical 3 during the irradiation was found to be similar to the radical 3 appearance measured by ESR. The silane (Me3SiMe2Si)3SiH was found as main product (∼50% yield) of the photo-cleavage of the disilane 1.
AB - Absorption, ESR and photoluminescence of hexakis(pentamethyldisilyl)disilane [(Me3SiMe2Si) 3Si]2 1 were studied. Two branched polysilyl radicals were observed by ESR spectroscopy under UV irradiation of 1. The smaller 'star' radical (Me3SiMe2Si) 3Si 2 has half-lifetime 1 s whereas the bigger one (Me3SiMe2Si)3Si (Me3SiMe2Si)2Si 3 has a half-lifetime about 50 min. During irradiation the reaction 1 → 2 + 3 followed by 2 + 3 → products (P) occur. The behavior of the 300 nm absorption of radical 3 during the irradiation was found to be similar to the radical 3 appearance measured by ESR. The silane (Me3SiMe2Si)3SiH was found as main product (∼50% yield) of the photo-cleavage of the disilane 1.
UR - http://www.scopus.com/inward/record.url?scp=0038693098&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0038693098&partnerID=8YFLogxK
U2 - 10.1016/S0009-2614(03)00717-6
DO - 10.1016/S0009-2614(03)00717-6
M3 - Article
VL - 374
SP - 257
EP - 263
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 3-4
ER -