کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
28829 | 44094 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Excited-state proton transfer and geminate recombination in the molecular cage of β-cyclodextrin
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Excited-state proton transfer and geminate recombination in the molecular cage of β-cyclodextrin Excited-state proton transfer and geminate recombination in the molecular cage of β-cyclodextrin](/preview/png/28829.png)
چکیده انگلیسی
Excited-state proton transfer and geminate recombination in aqueous heptakis(2,6-di-O-methyl)-β-cyclodextrin have been compared with those in water by monitoring the photoinduced prototropic tautomerization of 6-hydroxyquinoline, which occurs via forming anionic intermediate. Enol deprotonation decelerates by 18 times whereas its reverse process accelerates slightly with encapsulation. The imine protonation of the intermediate slows down by 8.2 times in the molecular cage. These unusual kinetic features have been explained with the geminate recombination of protons as well as the structural dynamics of solvent molecules and the relative energetics of involved species.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 194, Issue 1, 5 February 2008, Pages 105–109
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 194, Issue 1, 5 February 2008, Pages 105–109
نویسندگان
Young-Shin Lee, Oh-Hoon Kwon, Han Jung Park, Jan Franz, Du-Jeon Jang,