Monitoring ultrafast intramolecular proton transfer processes in an unsymmetric β-diketone

2015 ◽  
Vol 17 (13) ◽  
pp. 8459-8466 ◽  
Author(s):  
Pramod Kumar Verma ◽  
Andreas Steinbacher ◽  
Federico Koch ◽  
Patrick Nuernberger ◽  
Tobias Brixner
Keyword(s):  
Proton Transfer ◽  
Excited States ◽  
Electronic Excitation ◽  
Intramolecular Proton Transfer ◽  
Transfer Processes ◽  
Electronic Ground

Electronic excitation of a UV-absorbing unsymmetric β-diketone discloses intramolecular proton transfer among electronic ground as well as excited states.

scholarly journals Photoacidity as a tool to rationalize excited state intramolecular proton transfer reactivity in flavonols

2018 ◽  
Vol 17 (2) ◽  
pp. 231-238 ◽  
Author(s):  
Luís Gustavo Teixeira Alves Duarte ◽  
José Carlos Germino ◽  
Cláudia de Ávila Braga ◽  
Cristina Aparecida Barboza ◽  
Teresa Dib Zambon Atvars ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Excited States ◽  
Intramolecular Proton Transfer ◽  
Flavonol Derivatives ◽  
Proton Transfer Reactivity ◽  
Electronic Ground

Determination of acidic strengths at the electronic ground and excited states of flavonol derivatives.

Excited electronic states in dark biological process

1973 ◽  
Vol 6 (4) ◽  
pp. 485-501 ◽  
Author(s):  
G. Cilento
Keyword(s):  
Amino Acids ◽  
Excited States ◽  
Electronic Excitation ◽  
Light Emission ◽  
Biological Process ◽  
Electronic States ◽  
Aromatic Amino Acids ◽  
Active Species ◽  
Excited Electronic States ◽  
Transfer Processes

It is well known that excited states may be generated chemically in biological systems as evidencex and by the phenomenon of bioluminescence and it is natural to suspect that they may also be generated and used in dark processes (Szent-Györgyi, 1941; Steele, 1963; Cilento, 1965; White & Wei, 1970; Whiteet al.1971). Förster (1967) has pointed out that electronic excitation and subsequent transfer processes may occur in biological dark systems despite the fact that the energy available from enzymic processes is too low to excite aromatic amino acids and other biochemical structures. Hastings (1968) suggests that in some organisms light emission is just an alternative to the formation of an active species.

DFT based computational study on the excited state intramolecular proton transfer processes in o-hydroxybenzaldehyde

2009 ◽  
Vol 71 (5) ◽  
pp. 1728-1735 ◽  
Author(s):  
Sankar Prasad De ◽  
Sankarlal Ash ◽  
Dipak kumar Bhui ◽  
Harekrishna Bar ◽  
Priyanka Sarkar ◽  
...  
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Computational Study ◽  
Intramolecular Proton Transfer ◽  
Transfer Processes
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