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Article: Research in the area of physical chemistry reported from Humboldt University.
- Article from:
- Chemicals & Chemistry
- Article date:
- November 6, 2009
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"The long-wavelength absorption band of 2,6-diphenyl-4-(2,4,6-triphenylpyridinium-1-yl) phenolate (betaine-30, B30) in ethanol and 1-chlorobutane shifts to the blue by cooling in the temperature range of 294-128 K. In addition, B30 shows fluorescence in both solvents at 77 K, which is absent at room temperature. The study of the ground and excited state of B30 and its model compound 4-(pyridinium-1-yl)-phenolate PyPo by DFT/TDDFT calculations indicates that for the perpendicular conformation, the ground state possesses a charge-separated closed-shell hole pair (hp) electronic configuration, and the S, state corresponds to a. biradicaloid electronic structure (dd) with a ...
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Article: Scientists at Humboldt University publish new data ...
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... ... Solvents. Journal of Physical Chemistry B, 2009;113 ... contact Z.W. Qu, Humboldt University, Institute Physics ... the Journal of Physical Chemistry B can be contacted ... Keywords: Physics, Humboldt University. This article ...
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