Excited-State Dynamics Affected by Switching of a Hydrogen-Bond Network in Hydrated Aminopyrazine Clusters

The Journal of Physical Chemistry. a
Yuji YamadaYoshinori Nibu

Abstract

The cluster structures of hydrated aminopyrazines, APz-(H2O)n=2-4, in supersonic jets have been investigated measuring the size-selected electronic and vibrational spectra and determined with the aid of quantum chemical calculations. The APz-(H2O)2 structure is assigned as a cyclic N1 type where a homodromic hydrogen-bond chain starts from the amino group and ends at the 1-position nitrogen atom of the pyrazine moiety, corresponding to 2-aminopyridine-(H2O)2. On the other hand, APz-(H2O)n=3,4 has a linear hydrogen-bond network ending at the 4-position one (N4), which resembles 3-aminopyridine-(H2O)n=3,4. The hydrogen-bond network switching from the N1 type to the N4 one provides the accompanying red shifts of the S1-S0 electronic transition that are entirely consistent with those of the corresponding 2-aminopyridine and 3-aminopyridine clusters and also shows the drastically strengthened fluorescence intensity of origin bands in the electronic spectrum. The significant change in the excited-state dynamics is explored by the fluorescence lifetime measurement and the time-dependent density functional theory (TD-DFT) calculation. It is suggested that the drastic elongation of fluorescence lifetimes is due to the change in the elec...Continue Reading

References

Dec 26, 2001·Chemical Reviews·U Buck, F Huisken
Nov 13, 2003·Proceedings of the National Academy of Sciences of the United States of America·Joseph R Roscioli, David W Pratt
Oct 30, 2004·The Journal of Chemical Physics·Jann A FreySamuel Leutwyler
Feb 24, 2005·Journal of the American Chemical Society·Ali Abo-RiziqMattanjah S de Vries
May 5, 2006·The Journal of Physical Chemistry. a·Yoshinori NibuHiroko Shimada
Feb 13, 2007·Annual Review of Physical Chemistry·Mattanjah S de Vries, Pavel Hobza
Apr 4, 2007·The Journal of Physical Chemistry. a·Prashant Chandra Singh, G Naresh Patwari
Oct 19, 2007·The Journal of Physical Chemistry. a·Andrzej L Sobolewski, Wolfgang Domcke
Jul 22, 2008·Proceedings of the National Academy of Sciences of the United States of America·Yuji YamadaTakayuki Ebata
Apr 11, 2009·The Journal of Physical Chemistry. a·Philipp OttigerSamuel Leutwyler
Mar 4, 2011·Journal of Computational Chemistry·Stefan GrimmeLars Goerigk
Jul 13, 2011·The Journal of Chemical Physics·Chunmei DengBen Zhong Tang
Jul 9, 2013·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Shuo ChaiShu-Lin Cong
Feb 26, 2014·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Toshinori Suzuki
Oct 25, 2014·Nature Chemistry·Simon LobsigerSamuel Leutwyler
Nov 7, 2018·The Journal of Physical Chemistry. a·Luca SiffertSamuel Leutwyler
Apr 10, 2019·The Journal of Physical Chemistry. a·Yuji YamadaYoshinori Nibu
May 27, 2020·Physical Chemistry Chemical Physics : PCCP·Xiang HuangWolfgang Domcke
Aug 14, 2020·The Journal of Physical Chemistry. a·Mini Bharati AhirwarMilind M Deshmukh

❮ Previous
Next ❯

Related Concepts

Related Feeds

Barrel cortex

Here is the latest research on barrel cortex, a region of somatosensory and motor corticies in the brain, which are used by animals that rely on whiskers for world exploration.