کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
25920 43920 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Molecular structure and reversible photodegradation in anthraquinone dyes
ترجمه فارسی عنوان
ساختار مولکولی و تجزیه فوتونی برگشت پذیر در رنگ های آنتراکینون
کلمات کلیدی
عکاسی خود شفا، رنگ آنتراکینون، پلیمر طیف سنجی جذب و فلورسانس، جمعیت آسیب دیده و آسیب دیده، نقطه ایسوزبستیک، مدل دامنه
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
چکیده انگلیسی

Reversible photodegradation is a process that has been observed in several dye molecules, but the underlying mechanisms are not still well understood. In this contribution, we characterize a series of anthraquinone dyes to determine how self-healing depends on molecular structure. Past studies have used probing techniques that rely on linear absorption, two-photon fluorescence, and amplified spontaneous emission. Each of these probes provide an indirect measure of the populations of the damaged and undamaged species, requiring calibrations or assumptions to be made that might affect the accuracy of the results. The present studies use fluorescence as a probe, which is shown to directly measure the undamaged population. It is found that certain anthraquinone classes share common structural features that are associated with self healing. Furthermore, the time and temperature dependence of photodegradation and self-healing is found to be consistent with the domain model of self healing.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 328, 1 September 2016, Pages 66–76
نویسندگان
, ,