التفاصيل البيبلوغرافية
| العنوان: |
Photophysical and electrochemical properties of two trans-A 2 B-corroles: differences between phenyl or pyrenyl groups at the meso-10 position. |
| المؤلفون: |
Acunha TV; Laboratório de Bioinorgânica e Materiais Porfirínicos, Departamento de Química, Universidade Federal de Santa Maria - UFSM, Av. Roraima 1000, 97105-900 Santa Maria, RS, Brazil. bernardopgq@gmail.com., Victória HFV, Krambrock K, Marques AC, Costa LAS, Iglesias BA |
| المصدر: |
Physical chemistry chemical physics : PCCP [Phys Chem Chem Phys] 2020 Aug 07; Vol. 22 (29), pp. 16965-16977. Date of Electronic Publication: 2020 Jul 16. |
| نوع المنشور: |
Journal Article |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: Royal Society of Chemistry Country of Publication: England NLM ID: 100888160 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1463-9084 (Electronic) Linking ISSN: 14639076 NLM ISO Abbreviation: Phys Chem Chem Phys Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: |
Original Publication: Cambridge [England] : Royal Society of Chemistry, c1999- |
| مستخلص: |
The present study reports on the optical and photophysical properties of trans-A 2 B-corroles possessing pyrenyl units attached at the meso-10-position and compares them with those of model trans-A 2 B-corroles having phenyl substituents at that position. In contrast to the model meso-substituted corrole, the new pyrenyl-corrole shows slightly red-shifted absorption bands and blue-shifted emission, slightly higher fluorescence quantum yield, and more importantly, it shows better photo-stability under white-light illumination. Theoretical calculations were used to determine the electronic transitions and geometries of the singlet and triplet excited states (TD-DFT and NTO). Moreover, we demonstrate that the pyrenyl-corrole in analogy to previously studied model corroles is able to generate reactive oxygen species (ROS) under visible light using photo-degradation of 1,3-diphenylisobenzofuran (DBPF), a singlet oxygen quencher, and EPR spectroscopy allied with the spin-trapping method is used for identifying singlet oxygen species. The results show that the pyrenyl unit attached at the meso-10-position of the corrole increases the photo-stability and efficiency in ROS generation compared to the phenyl substituent. |
| تواريخ الأحداث: |
Date Created: 20200717 Latest Revision: 20200730 |
| رمز التحديث: |
20240628 |
| DOI: |
10.1039/d0cp02364g |
| PMID: |
32672779 |
| قاعدة البيانات: |
MEDLINE |
