کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1409936 1501839 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microscopic origin of secondary modes observed in decahydroisoquinoline
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Microscopic origin of secondary modes observed in decahydroisoquinoline
چکیده انگلیسی
Secondary modes in glass-forming liquids can be divided into two classes, i.e. intermolecular processes, known as Johari-Goldstein type and intramolecular processes which probably originates from conformational changes. In this article we present method of identification what molecular motions are responsible for intramolecular secondary mode. We have shown, that intense secondary relaxation (β) observed in decahydroisoquinoline is related with chair to boat interconversion occurring in single cyclohexane type ring. Moreover, fast γ-process observed in dielectric spectra can be interpreted as change of hydrogen linked with heterogenic nitrogen atom from equatorial to axial position.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 975, Issues 1–3, 30 June 2010, Pages 200-204
نویسندگان
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