Excited state proton transfer in amino- and hydroxy-phenyl heteroazoles and related compounds

Tautomerization in the ground and first excited singlet states of phenyl-lapimidazole

“…Proton transfer is an area of wide interest due to its ubiquitous nature and recently many intramolecular proton transfer (IPT) reactions have been studied [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. The advent of ultrafast spectroscopic methods has permitted kinetic studies on the nano-, pico-and femtosecond timescales [2][3][4].…”

“…Benzimidazole-like molecules absorb in the ultraviolet region and, because of their excellent photostability, have proven to be highly useful model compounds for investigating ground and excited state properties [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Some 2 0 -hydroxyphenyl-benzimidazoles are used as laser dyes.…”