کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
28671 44085 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spectroscopic properties of meso-thienylporphyrins with different porphyrin cores
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Spectroscopic properties of meso-thienylporphyrins with different porphyrin cores
چکیده انگلیسی

The absorption and fluorescence properties of a series of meso-thienylporphyrins with different porphyrin cores (N4, N3O, N3S and N2S2 cores) were studied and compared with the corresponding meso-tetraarylporphyrins. The replacement of six-membered phenyl groups with five-membered thienyl groups at meso-positions resulted in red shifts and broadening of absorption and emission bands, low quantum yields and decreased S1 state lifetimes and the maximum effects were observed for meso-tetrathienylporphyrin with N2S2 porphyrin core. Similar observations were noted for the dications of meso-thienylporphyrins compared to the dications of the corresponding meso-tetraarylporphyrins. These results suggest that the replacement of six-membered aryl group with five-membered thienyl groups at meso-positions, the electronic properties of the porphyrin were altered significantly.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 177, Issues 2–3, 25 January 2006, Pages 156–163
نویسندگان
, ,