کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1238438 | 968936 | 2007 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Linear-dichroic infrared spectroscopy-Validation and experimental design of the new orientation technique of solid samples as suspension in nematic liquid crystal
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Linear-dichroic infrared spectroscopy-Validation and experimental design of the new orientation technique of solid samples as suspension in nematic liquid crystal Linear-dichroic infrared spectroscopy-Validation and experimental design of the new orientation technique of solid samples as suspension in nematic liquid crystal](/preview/png/1238438.png)
چکیده انگلیسی
A validation of the developed new orientation method of solid samples as suspension in nematic liquid crystal (NLC), applied in linear-dichroic infrared (IR-LD) spectroscopy has been carried out using a model system dl-isoleucine (dl-isoleu). Accuracy, precision and the influence of the liquid crystal medium on peak positions and integral absorbances of guest molecules have been presented. Optimization of experimental conditions has been performed as well. An experimental design for quantitative evaluation of the impact of four input factors: the number of scans, the rubbing-out of KBr-pellets, the amount of studied compounds included in the liquid crystal medium and the ratios of Lorentzian to Gaussian peak functions in the curve fitting procedure on the spectroscopic signal at five different frequencies, indicating important specifities of the system has been studied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 67, Issue 1, May 2007, Pages 66-75
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 67, Issue 1, May 2007, Pages 66-75
نویسندگان
B.B. Ivanova, V.D. Simeonov, M.G. Arnaudov, D.L. Tsalev,