Excited State Perturbations of 7-AZAINDOLE Mediated Through Micro-Solvation

Physics

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Electronic

Scientific paper

7-azaindole readily forms water clusters when seeded into a molecular beam. Interestingly, the addition of water considerably perturbs the excited state of 7-azaindole: the electronic origin of 7-azaindole(H_2O) is shifted drastically to lower energy, 1290 wn, relative to the origin of the bare molecule; furthermore, recent evidence indicates that 7-azaindole(H_2O) is of L_a character, contrary to the bare molecule. In this work, high resolution electronic spectra of 7-azaindole(H_2O) were measured in the presence of an external electric field , as a means to study water induced changes in the electronic distribution of 7-azaindole. Furthermore, the L_a/L_b character of the excited state of 7-azaindole(H_2O) was examined by recording similar spectra of isotopically labeled species.
T. B. C. Vu, I. Kalkman, L. W. Meerts, Y. Svartsov, C. Jacoby, and M. Schmitt, J. Chem. Phys. 128, 214311 (2008).

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