کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5010104 | 1462050 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tetrasubstituted copper phthalocyanines: Correlation between liquid crystalline properties, films alignment and sensing properties
ترجمه فارسی عنوان
فتالوسیانین های مس مخلوط شده: ارتباط بین خواص کریستالی مایع، تراز کردن فیلم و خواص حساسیتی
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کلمات کلیدی
فتالوسیانین های مس، حسگرهای شیمیایی، سنسورهای آمونیاک، کریستال مایع، تطبیق فیلم،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Copper phthalocyanines (CuPc) containing alkylthio (-S(CH2)nCH3, n = 7 and 15), alkyloxy- (-O(CH2)nCH3, n = 7 and 15) and polyoxo [-O(CH2CH2O)3CH3 and âS(CH2CH2O)3CH3] substituents were synthesized and investigated to reveal the effects of substituents type (alkylthio, alkyloxy and polyoxo) and the type of the connecting heteroatom (oxygen or sulphur) on the mesogenic properties, films alignment and sensing behaviour. The liquid crystalline properties of these phthalocyanines were investigated by differential scanning calorimetry, polarizing optical microscopy and X-ray diffraction techniques. The structure and morphology of spun thin films of copper phthalocyanine derivatives were studied by the UV-vis and Raman spectroscopies as well atomic force microscopy. The sensing properties of CuPc films were studied by the measurement of conductivity change upon interaction with ammonia in the range 10-50 ppm. All investigated films of CuPc derivatives display thermotropic columnar mesomorphism. It was shown that the films with polyoxo- [-O(CH2CH2O)3CH3 and âS(CH2CH2O)3CH3] substituents as well as with alkylthio âS(CH2)nCH3 (n = 7) substituents, which are liquid crystalline at room temperature, form ordered films with a random planar alignment of columns. Their films exhibit the better sensor performance with the maximal sensor response for the films of CuPc containing (-S(CH2CH2O)3CH3) substituents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 241, 31 March 2017, Pages 364-375
Journal: Sensors and Actuators B: Chemical - Volume 241, 31 March 2017, Pages 364-375
نویسندگان
Asuman DakoÄlu Gülmez, Maxim S. Polyakov, Victoria V. Volchek, Sinem Tuncel KostakoÄlu, Aliye Aslı Esenpinar, Tamara V. Basova, Mahmut DurmuÅ, AyÅe Gül Gürek, Vefa Ahsen, Hikmat Adnan Banimuslem, Aseel K. Hassan,