Academic Journal
Photostability and Dynamic Helical Behavior in Chiral Poly(phenylacetylene)s with a Preferred Screw‐Sense
| العنوان: | Photostability and Dynamic Helical Behavior in Chiral Poly(phenylacetylene)s with a Preferred Screw‐Sense |
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| المؤلفون: | Rey‐Tarrío, Francisco, Guisán‐Ceinos, Santiago, Cuerva, Juan M., Miguel, Delia, Ribagorda, Maria, Quiñoá, Emilio, Freire, Félix |
| المساهمون: | Agencia Estatal de Investigación, Ministerio de Ciencia e Innovación, Consellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia, Secretaria Xeral de Investigación e Desenvolvemento, Xunta de Galicia |
| المصدر: | Angewandte Chemie ; volume 134, issue 33 ; ISSN 0044-8249 1521-3757 |
| بيانات النشر: | Wiley |
| سنة النشر: | 2022 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | Helical polymers such as poly(phenylacetylene)s (PPAs) are interesting materials due to the possibility of tuning their helical scaffold (sense and elongation) once they have been prepared and by the presence of external stimuli. The main limitation in the application of PPAs is their poor photostability. These polymers degrade under visible light exposure through a photochemical electrocyclization process. In this work, it was demonstrated, through a selected example, how the photochemical degradation in PPAs is directly related to their dynamic helical behavior. Thus, while PPAs with dynamic helical structures show poor photostability under UV/Vis light exposure, poly‐( R )‐ 1 , bearing an enantiopure sulfoxide group as pendant group and designed to have a quasi‐static helical behavior, shows a large photostability due to the restricted conformational composition at the polyene backbone, needed to orient the conjugated double bonds prior to the photochemical electrocyclization process and the subsequent degradation of the material. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1002/ange.202207623 |
| الاتاحة: | http://dx.doi.org/10.1002/ange.202207623 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ange.202207623 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ange.202207623 |
| Rights: | http://creativecommons.org/licenses/by-nc/4.0/ |
| رقم الانضمام: | edsbas.BFE5E306 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/ange.202207623 |
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