کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
175268 | 458906 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermodynamic properties and photodegradation kinetics of indocyanine green in aqueous solution
ترجمه فارسی عنوان
خواص ترمودینامیکی و سینتیک فتوسنتزی سبز اندوسیانین در محلول آبی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Aqueous solutions of indocyanine green (ICG) are spectrophotometrically and fluorimetrically studied as a function of the dye concentration. The integral absorbance concept is introduced to minimize uncertainties due to the use of only a point. This new method, provides a value of the equilibrium constant consistent with those obtained, by a different method, for safranine and thionine. The influence of ICG concentration on its fluorescence spectrum is determined. When ICG is exposed to white light degrades through the formation of free radicals. The overall kinetics of degradation is monitored spectrophotometrically and studied in an unconventional way. The results exhibit a power law, regardless of the initial concentration of dye. An apparent order of 1.5 suggests a complex mechanism where the collision between radicals is very important whilst a lifetime of 4Â h it is indicative of a rapid degradation kinetics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 134, November 2016, Pages 342-347
Journal: Dyes and Pigments - Volume 134, November 2016, Pages 342-347
نویسندگان
F. Di Nezza, G. Guerra, C. Costagliola, L. Zeppa, L. Ambrosone,