Electronic spectra of carbazole and its N-ethyl and N-acetyl derivatives

Volkova, V. P.; Dmitrieva, I. L.; Klimova, L. A.; Milliaresi, E. E.

doi:10.1007/bf00624309

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“…have studied the absorption spectra of carbazole derivatives with 3‐position styrene substituent; it is indicated that the absorption peaks would shift to a longer wavelength when the electronic π‐conjugated structure is extended . The electron‐donor effect of the 9‐position group of derivatives could also lead to the bathochromic red‐shift, which is in agreement with the theoretical and experimental results by Volkova et al . In the compounds 4a , 4b , and 4c , the 3‐position and 6‐position were substituted by styrene, and the substituents in the 9‐position were the electron‐donor effect group, ethyl, n ‐butyl, and benzyl; therefore, their absorption peaks λ absmax red‐shifted 39, 38, and 36 nm, respectively, compared with carbazole because of the energy level difference of π → π*, 4a < 4b < 4c .…”

Section: Resultssupporting

confidence: 90%

Experimental and theoretical studies on the one‐photon and two‐photon properties of a series of carbazole derivatives containing styrene

Zhou

et al. 2011

J of Physical Organic Chem

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Symmetric-type carbazole derivatives show great potential for application in two-photon absorption (TPA) materials and organic light-emitting diodes. The absorption spectra and fluorescence emission spectra of three different N-alkyl symmetric-type carbazole derivatives were investigated. The density functional theory (DFT) timedependent-DFT//Becke, three-parameter, Lee-Yang-Parr/6-31 G* method has been used to theoretically study one-photon absorption properties. The computational results are in good agreement with the available experimental values. The two-photon excited fluorescence of the compounds was surveyed by 120 fs pulse at 790 nm Ti: sapphire laser operating at 1 kHz repetition rate. Two-photon excited fluorescence was obtained in the range of 380-600 nm, and TPA cross-sections were calculated. The TPA properties of the series of compounds were investigated by the ZINDO/single and double electronic excitation configuration interaction method. The influence of the chemical structure of the compounds on two-photon optical properties was discussed. The results show how the different changes in one-photon absorption and TPA properties on the basis of lengthening the conjugated bridge and the different carbazole N-alkyl substituents are attributed to the transition dipole moment in the excited process.

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Section: Resultssupporting

confidence: 90%

Experimental and theoretical studies on the one‐photon and two‐photon properties of a series of carbazole derivatives containing styrene

Zhou

et al. 2011

J of Physical Organic Chem

View full text Add to dashboard Cite

show abstract

Electronic spectra of carbazole and its N-ethyl and N-acetyl derivatives

Cited by 1 publication

References 5 publications

Experimental and theoretical studies on the one‐photon and two‐photon properties of a series of carbazole derivatives containing styrene

Experimental and theoretical studies on the one‐photon and two‐photon properties of a series of carbazole derivatives containing styrene

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