کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1886786 | 1533545 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fragmentation and dimerization of aliphatic amino acid films induced by vacuum ultraviolet irradiation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Fragmentation and dimerization of aliphatic amino acid films induced by vacuum ultraviolet irradiation Fragmentation and dimerization of aliphatic amino acid films induced by vacuum ultraviolet irradiation](/preview/png/1886786.png)
چکیده انگلیسی
The chemical reaction of aliphatic amino acid, such as alanine (Ala) and leucine (Leu), in the solid phase induced by vacuum ultraviolet (VUV) irradiation was studied by high-performance liquid chromatography technique and mass spectroscopic method. Quantum efficiencies of dimerization of Ala in the solid phase obviously showed irradiated VUV wavelength dependence. The values of quantum efficiencies of formation of Ala dimer were determined to be 5.7Ã10-5, 1.3Ã10-3, and 2.4Ã10-4 for 208, 183, and 87Â nm irradiation, respectively. VUV-induced fragment desorption from Ala and Leu films has also been examined by mass spectroscopic method. Observed mass spectra clearly indicated that both the deamination and decarboxylation reactions were common in both Ala and Leu films, and the dissociation of side chain occurred only in Leu film.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 77, Issues 10â12, OctoberâDecember 2008, Pages 1164-1168
Journal: Radiation Physics and Chemistry - Volume 77, Issues 10â12, OctoberâDecember 2008, Pages 1164-1168
نویسندگان
Masahito Tanaka, Fusae Kaneko, Toshiyuki Koketsu, Kazumichi Nakagawa, Toru Yamada,