کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
232365 | 1427475 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Local density augmentation of excited 1-(dimethylamino)naphthalene in supercritical water
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Local density around excited 1-(dimethylamino)naphthalene in supercritical water was measured by peak shift of fluorescence spectrum from 8 to 37 MPa at 380 °C. Local density augmentation was evaluated by the excess density, which was defined as the difference between the local density and bulk density. Local density augmentation was observed to be lower than the critical density (ρc = 0.32 g cm−3). The excess density exhibited a maximum at about 0.11 g cm−3, which is lower than the critical density. Our results show that excited-state 1-(dimethylamino)naphthalene has strong interactions with water molecules and that local density augmentation occurs even if the solute life time is very short (ca. ns order).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Supercritical Fluids - Volume 39, Issue 2, December 2006, Pages 206–210
Journal: The Journal of Supercritical Fluids - Volume 39, Issue 2, December 2006, Pages 206–210
نویسندگان
Kimitaka Minami, Takafumi Aizawa, Mitsuhiro Kanakubo, Yusuke Hiejima, Hiroshi Nanjo, Richard L. Smith Jr.,