Excited state proton transfer of a metal complex: determination of the acid dissociation constant for a metal-to-ligand charge transfer state of a ruthenium(II) complex

1977 ◽  
Vol 99 (9) ◽  
pp. 3187-3189 ◽  
Author(s):  
Paul J. Giordano ◽  
C. Randolph Bock ◽  
Mark S. Wrighton ◽  
Leonard V. Interrante ◽  
Raymond F. X. Williams
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Proton Transfer ◽  
Metal Complex ◽  
Acid Dissociation ◽  
Acid Dissociation Constant ◽  
Ligand Charge Transfer ◽  
Excited State Proton Transfer ◽  
Transfer State

Photooxidation of Dicyanoaurate(I) Induced by Metal-to-Ligand Charge Transfer Excitation

1998 ◽  
Vol 53 (8) ◽  
pp. 853-855 ◽  
Author(s):  
Horst Kunkely ◽  
Arad Vogler
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Charge Transfer ◽  
Charge Transfer State ◽  
State Electron ◽  
Ligand Charge Transfer ◽  
Charge Transfer Excitation ◽  
Transfer State

Abstract The irradiation of [Au(CN)2]- in oxygen-saturated acetonitrile leads to photooxidation of Au(I). In the presence of additional chloride [Au(CN)2CL2]- is formed with φ= 0.5 x 10-4 at λirr = 254 nm. It is assumed that [Au(CN)2]- in its metal-to-ligand charge transfer state undergoes an excited state electron transfer to oxygen in the primary photochemical step.

Effects of intermolecular hydrogen bonding on the excited-state proton transfer properties of the cinnamonitrile–methanol complex

2013 ◽  
Vol 91 (3) ◽  
pp. 229-234 ◽  
Author(s):  
Dapeng Yang ◽  
Ruiquan Qi
Keyword(s):  
Hydrogen Bonding ◽  
Excited State ◽  
Charge Transfer ◽  
Proton Transfer ◽  
Density Functional ◽  
Dft Method ◽  
Electronic Energy ◽  
Intermolecular Hydrogen Bonding ◽  
Excited State Proton Transfer ◽  
Hydrogen Bonded

The time-dependent density functional theory (TD-DFT) method was used to study the excited-state proton transfer (ESPT) properties of the hydrogen-bonded cinnamonitrile (3TPAN)–methanol (MeOH) complex (3TPAN–MeOH). The intermolecular hydrogen bonds N1···H11 in both the ground state S0 and the excited state S1 were demonstrated by the optimized geometric structures of the hydrogen-bonded 3TPAN–MeOH complex. While in the excited state S3, a new hydrogen bond H11···O1 was formed after the ESPT took place from the hydrogen-bonded MeOH molecule to the 3TPAN moiety. It was demonstrated that the electronic transitions of the S1 states for both the 3TPAN monomer (including the S3 state) and the hydrogen-bonded 3TPAN–MeOH complex should be of a localized-excited (LE) nature on the 3TPAN molecule, while the S3 state of the hydrogen-bonded 3TPAN–MeOH complex should be of charge transfer (CT) character from the hydrogen-bonded MeOH molecule (through O1···H11) to the 3TPAN moiety. The S3-state proton transfer and charge transfer due to the intermolecular hydrogen-bonding interaction should be the reasons for the remarkable redshift (0.91 eV) of the S3-state electronic energy for the hydrogen-bonded 3TPAN–MeOH complex compared with that of the 3TPAN monomer.

Excited-state proton transfer as a biological probe. Determination of rate constants by means of nanosecond fluorometry

Biochemistry ◽  
1972 ◽  
Vol 11 (25) ◽  
pp. 4779-4786 ◽  
Author(s):  
Michael R. Loken ◽  
John W. Hayes ◽  
James R. Gohlke ◽  
Ludwig Brand
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Rate Constants ◽  
Excited State Proton Transfer ◽  
Biological Probe
Sign in / Sign up

Export Citation Format

Share Document