Author
Nikhil Guchhait
Bio: Nikhil Guchhait is an academic researcher from Indian National Association. The author has contributed to research in topics: Excited state. The author has an hindex of 1, co-authored 1 publications receiving 10 citations.
Topics: Excited state
Papers
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TL;DR: In this paper, the laser-induced fluorescence excitation (FE) and multiphoton ionisation (MPI) spectra of tetrahydroquinoline (THQ) and N-deuterotetetrahydronigenoline (D-THQ), cooled by seeding in a supersonic jet expansion of He, have been investigated in the wavenumber range 32400 to 33200 cm−1.
10 citations
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TL;DR: In this paper, the authors presented the fluorescence excitation and dispersed emission spectra of tetrahydroisoquinoline and confirmed two origins for two conformers with the hydrogen atom attached to the nitrogen atom at axial and equatorial positions.
Abstract: Fluorescence excitation and dispersed emission spectra of tetrahydroisoquinoline are presented here. Two bands at 36 781 and 36 884 cm−1 are confirmed from the spectral hole burning studies as two origins for two conformers. These bands correspond to the inequivalent twist conformers with the hydrogen atom attached to the nitrogen atom at axial and equatorial positions, respectively. The former is found to be the most stable one. SVL spectra are explained on the basis of two theoretically calculated low-frequency vibrations. These correspond to the butterfly and puckering motions of the benzene chromophore, respectively.
17 citations
TL;DR: In this paper, a conformational search for 1, 2, 3, 4-tetrahydroisoquinoline (THIQ) yields a number of conformers in S0 and S1 states.
12 citations
TL;DR: In this paper, the laser induced fluorescence excitation (FE) spectra of jet-cooled isochroman is used along with the theoretical calculations to assign vibronic levels in 0-500 cm−1 region in the S1 (π, π∗) state.
11 citations
TL;DR: In this article, the twisted conformer with the equatorial hydrogen of the NH group is computed to be the most stable conformer of tetrahydroquinoline in S0 and S1 states at various levels of quantum chemical computations.
11 citations
TL;DR: In this article, the twisted structure of chroman was found to be the most stable conformer in S0 and S1 states at various levels of theoretical calculations and the barrier to planarity was calculated to be 3500 ± 300 cm−1 with the twisting angle as 30.5°.
9 citations