Stilbene and Its Derivatives for Multistate Spectral Sensing

Gelmont, Boris; Chen, Yikan; Xie, Zhen; Luo, Ying; Jensen, James O.

doi:10.1109/tnano.2010.2050210

Cited by 2 publications

(1 citation statement)

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“…1,2 Flexible systems, including flexible push-pull donor-acceptor compounds, are interesting from many points of view, and carry the promise for potential applications. 22,23 The DCS [1][2][3][4]8 and similar molecules, for example, the aminostilbenes 5,24 with the CN group replaced by the NO 2 , have been extensively studied for many years. Their lowest excited electronic state has a charge-transfer (CT) nature and they were used by Lippert 4 to propose a method for estimation of the electric dipole moment of the molecule in its excited state.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast excited state dynamics of trans-[4-(4′-dimethylaminostyryl)] pyridine N-oxide in solution: femtosecond fluorescence up-conversion and theoretical calculations

Szemik-Hojniak

Deperasińska

Oberda

et al. 2013

Phys. Chem. Chem. Phys.

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The results of the steady-state and time-resolved fluorescence-spectroscopy measurements and DFT calculations for trans-[4-(4'-dimethylaminostyryl)] pyridine N-oxide (trans-DPO) in various solvents are presented. These results are similar to those reported in the literature for trans-4-(dimethylamino)-4'-cyanostilbene (DCS) where the S1 emissive state shows the charge-transfer (CT) nature. Alcohol solvents, however, have aroused our particular interest because hydrogen-bonded complexes are formed between them and the trans-DPO molecule. They demonstrate a stronger CT character of the lower lying excited state and a larger separation between the first and the second absorption band than in the free trans-DPO molecule. The different effects found in time-dependent femtosecond up-conversion (performed for several emission wavelengths in dioxane and methanol solution over the time range 0-40 ps) were assigned to the hydrogen bond assisted charge transfer process in trans-DPO in methanol, to the excited-state solvation dynamics and mainly to solvent relaxation of trans-DPO dissolved in dioxane and methanol.

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