کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5375512 | 1504300 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrafast Hemithioindigo-based peptide-switches
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Four newly synthesized Hemithioindigo-based peptide-switches with changing meta/para-substitution-pattern within the stilbene-part of the molecule are characterized with time-resolved absorption spectroscopy. The different substances undergo a light-induced Z/E-isomerization: the reaction proceeds on a picosecond timescale with time constants <50 ps for the Z â E photoreaction and <10 ps for the inverse process from E â Z. The reaction times strongly depend on the specific substitution-pattern: fast reaction dynamics (<10 ps) are observed for the direct attachment of electron donating groups in the para-position. The molecular mechanism of the isomerization-process can be described with the same reaction model as used for related systems. The presented Hemithioindigos are hence promising alternatives to Azobenzene-switches due to their fast switching speed, improved spectral characteristics and an improved stability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 358, Issues 1â2, 30 March 2009, Pages 103-110
Journal: Chemical Physics - Volume 358, Issues 1â2, 30 March 2009, Pages 103-110
نویسندگان
Thorben Cordes, Cord Elsner, Teja T. Herzog, Christian Hoppmann, Torsten Schadendorf, Wolfram Summerer, Karola Rück-Braun, Wolfgang Zinth,