کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9605501 | 44111 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoreactivity of diarylnitrone additive/pendant in poly(methyl methacrylate) film and photocontrol of refractive index for this polymer film
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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: Photoreactivity of diarylnitrone additive/pendant in poly(methyl methacrylate) film and photocontrol of refractive index for this polymer film Photoreactivity of diarylnitrone additive/pendant in poly(methyl methacrylate) film and photocontrol of refractive index for this polymer film](/preview/png/9605501.png)
چکیده انگلیسی
Photoreactivities of hydroxy-substituted diarylnitrones (1a-f) in solution and methyl methacrylate(MMA)-derived polymer film were studied. The methyl group introduced at the ortho-position on the N-aryl benzene ring of 1 (1c-e) was found to exert a great steric effect on the photoreaction pathway to eventually give a different photoproduct distribution. This steric effect also contributed to suppressing a decrease in the refractive index of PMMA polymer film. The irradiation at 366 nm of MMA-derived copolymer film (bearing the diarylnitrone pendants) lowered the refractive index of this film by âÎn = 0.0152, which was much larger than the refractive-index decrease of PMMA polymer film containing 1c-e as additives (âÎn = 0.0017-0.0044).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 174, Issue 3, 1 September 2005, Pages 199-206
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 174, Issue 3, 1 September 2005, Pages 199-206
نویسندگان
Kenta Tanaka, Hiroki Shiraishi, Emi Takayanagi, Akiko Korechika, Tetsutaro Igarashi, Tadamitsu Sakurai,