کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1231943 968783 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of anisotropic and isotropic solvent on the dipole moment of coumarin dyes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Effect of anisotropic and isotropic solvent on the dipole moment of coumarin dyes
چکیده انگلیسی

The ground state (μg) and the excited state (μe) dipole moments of two coumarin laser dyes, coumarin 440 and 460, were studied at room temperature in various solvents, viz., general solvents, alcohols and liquid crystals at 298 K. In this work, we report dipole moment of laser dyes in different anisotropic (liquid crystal) and isotropic environments for understanding the effects of environments on the molecular dipole moment and comparing them. Ground and excited state dipole moments of coumarin dyes were evaluated by means of solvatochromic shift method. It was observed that dipole moment values of excited states (μe) were higher than the corresponding ground state values (μg) in all media.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 78, Issue 3, March 2011, Pages 961–966
نویسندگان
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