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ID 649
本文ファイル
別タイトル
Photo-induced Polymerization and the Relaxation in Liquid Sulfur
著者
坂口 佳史
田村 剛三郎
キーワード
液体イオウ
重合化
光誘起吸収スペクトル
緩和時間
電荷移動錯体
NDC
化学
抄録(英)
In order to study dynamical properties of the polymerization transition in liquid sulfur we have measured the transient absorption spectra after illuminating pulsed laser below and above the polymerization temperature, T_p. For the measurement we have developed a specially designed optical cell made of quartz. The thickness of liquid specimen contained in the cell was less than 1μm, which enabled us to measure the change of optical absorption spectra accompanying the polymerization. We have found that the photo-induced polymerization occurs below T_p. When the relaxation to the thermal equilibrium state occurs after stopping the illumination there appear two different relaxation processes, that is, the fast and slow ones. The fast one is observed just after stopping the illumination of pulsed laser and the relaxation time is about 30 seconds. The slow one follows the fast one and the relaxation time is of the order of one or ten minutes. On the basis of these findings we propose a possible idea that the fast relaxation process corresponds to the relaxation from a polymeric chain to a charge-transfer complex and the slow one the relaxation from the charge-transfer complex to the most stable ring molecules.
掲載誌名
広島大学総合科学部紀要. IV, 理系編
20巻
開始ページ
131
終了ページ
151
出版年月日
1994-12-28
出版者
広島大学総合科学部
寄与者
国立情報学研究所
作成年月日
2006-03-21
ISSN
1340-8364
NCID
SelfDOI
言語
日本語
NII資源タイプ
紀要論文
広大資料タイプ
学内刊行物(紀要等)
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
部局名
総合科学研究科
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