A Comprehensive Scope of Peripheral and Axial Substituent Effect on the Spectroelectrochemistry of Boron Subphthalocyanines
| Autor: | Karl M Kasdish, Esmeralda Bukuroshi, Hasan Raboui, Xiaoqin Jiang, Aleksa Dovijarski, Timothy P. Bender, Kathleen L. Sampson |
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| Rok vydání: | 2018 |
| Předmět: |
Absorption spectroscopy
010405 organic chemistry Supporting electrolyte Substituent 010402 general chemistry Photochemistry Electrochemistry 01 natural sciences Redox 0104 chemical sciences Absorbance chemistry.chemical_compound Perchlorate chemistry Physical and Theoretical Chemistry Cyclic voltammetry |
| Zdroj: | The Journal of Physical Chemistry A. 122:4414-4424 |
| ISSN: | 1520-5215 1089-5639 |
| DOI: | 10.1021/acs.jpca.8b02023 |
| Popis: | An extensive study of the electrochemical and spectroelectrochemical properties of 14 boron subphthalocyanine (BsubPc) derivatives with various axial and peripheral substituents was performed in 1,2-dichloromethane (CH2Cl2) containing 0.1 M tetra-n-butyl-ammonium perchlorate (TBAP) as the supporting electrolyte. From the cyclic voltammetry results, all compounds exhibit one oxidation and at least two reduction processes within the solvent potential window of +1.6 to −1.8 V vs SCE. It was found that the reversibility of the redox reactions depends on the axial and peripheral substituents and the dipole moment of the boron-to-axial substituent. In general, UV–vis absorption spectra of the singly reduced BsubPc derivatives exhibit three equal intensity peaks in the 450 to 650 nm region that are derived from the maximum BsubPc absorbance peak upon reduction. Axial substituents affect the intensity of the three peaks upon reduction, while peripheral substituents shift the position of the peaks to higher wavele... |
| Databáze: | OpenAIRE |
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