Academic Journal
Dissymmetric Chiral Poly(diphenylacetylene)s: Secondary Structure Elucidation and Dynamic Luminescence
| العنوان: | Dissymmetric Chiral Poly(diphenylacetylene)s: Secondary Structure Elucidation and Dynamic Luminescence |
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| المؤلفون: | Tarrío, Juan José, Rodríguez, Rafael, Fernández, Berta, Quiñoá, Emilio, Freire, Félix |
| المساهمون: | Agencia Estatal de Investigación, Secretaria Xeral de Investigación e Desenvolvemento, Xunta de Galicia, Ministerio de Ciencia, Innovación y Universidades |
| المصدر: | Angewandte Chemie International Edition ; volume 61, issue 9 ; ISSN 1433-7851 1521-3773 |
| بيانات النشر: | Wiley |
| سنة النشر: | 2022 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | The secondary structure of a dissymmetric and chiral poly(diphenylacetylene) (PDPA) is elucidated by combining the data from NMR experiments (regioregular head to tail structure), Raman and IR studies ( E configuration of the polyene double bonds), and high‐resolution AFM images (helical pitch, packing angle and orientation of the external helix). As a result, an E‐transoidal polyene backbone describing three coaxial helices is obtained. Theoretical electronic circular dichroism (ECD) studies of the structure show a good correspondence between experimental and theoretical data and allow one to decipher that the first Cotton band is generated by the poly(diphenylacetylene) core and not only by the polyene backbone. The dynamic behavior of poly‐( S )‐ 2 is also demonstrated by a helix inversion effect produced by conformational changes at the pendant groups when annealed in solvents with different donor abilities. This phenomenon is accompanied by an inversion of the circular polarized luminescence of the PDPA (CPL switch). |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1002/anie.202115070 |
| الاتاحة: | http://dx.doi.org/10.1002/anie.202115070 https://onlinelibrary.wiley.com/doi/pdf/10.1002/anie.202115070 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/anie.202115070 |
| Rights: | http://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.A7DA7AC0 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/anie.202115070 |
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