نوع مقاله : مقاله مروری
نویسندگان
1 پژوهشگر پسادکتری، دکتری تخصصی شیمی فیزیک، دانشکده فیزیک دانشگاه تبریز، ایران
2 استاد تمام، دکتری تخصصی شیمی فیزیک، دانشکده فیزیک دانشگاه تبریز، ایران
3 دکتری تخصصی شیمی فیزیک، دانشگاه فنی و حرفه ای، ایران
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Liquid crystals are materials that their structural and mechanical properties are between the liquids and crystals. Meaning that, they can flow like a liquid while its molecules like solids, have a certain order and orientation. In recent years, liquid crystals have attracted the attention of many researchers due to their unique structural features. Considering that solvent effects play an important role in many physical and chemical interactions, it is important to investigate their optical properties in various industrial and medical fields. Dipole moment is an important optical and electronic property of molecules, its changes lead to change in electronic structure and as a result change in photophysical and biological behavior of this group of molecules. Based on this, in this research work, dipole moment in the ground and excited states of Discotic liquid crystals with three different substitution groups were measured through UV–visible spectroscopic technique. The results reveal that the electron cloud resides in the central part of these liquid crystals.
کلیدواژه‌ها [English]
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