التفاصيل البيبلوغرافية
| العنوان: |
Spectroscopic and Spectroelectrochemical Studies of Hexapentyloxytriphenylene—A Model Discotic Molecule. |
| المؤلفون: |
Ślęczkowski, Piotr |
| المصدر: |
International Journal of Molecular Sciences; Apr2023, Vol. 24 Issue 8, p6924, 12p |
| مصطلحات موضوعية: |
ELECTRON paramagnetic resonance, ELECTRON paramagnetic resonance spectroscopy, DISCOTIC liquid crystals, RADICAL cations, CYCLIC voltammetry, ULTRAVIOLET-visible spectroscopy |
| مستخلص: |
The electrochemical and spectroelectrochemical properties of the discotic mesogen 2,3,6,7,10,11-pentyloxytriphenylene (H5T) were studied with the use of cyclic voltammetry combined with UV-Vis and electron paramagnetic resonance (EPR) spectroscopy in solution. The UV-Vis absorption spectroscopy of H5T in dichloromethane showed its monomeric state in a concentration range up to 10−3 mol dm−3. The reversible process of the electrochemical formation of the radical cation was evidenced within the experimentally accessible potential window. The in situ UV-Vis spectroelectrochemical measurements further enabled identification of the product of the redox process and evaluation of the effect of aggregation in the concentration range of 5 × 10−3 mol dm−3. The results are discussed in the frame of solvent effects on the self-assembly propensity of solute molecules, in a wide range of concentrations. In particular, the crucial role of the solvent polarity is indicated, which contributes to the understanding of solution effects and pre-programming of supramolecular organic materials, in particular anisotropic disc-shaped hexa-substituted triphenylenes. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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