Ultrafast fluorescence quenching by electron transfer and fluorescence from the second excited state of a charge transfer complex as studied by femtosecond up-conversion spectroscopy

1998 ◽  
Vol 109 (14) ◽  
pp. 5963-5970 ◽  
Author(s):  
Shinichiro Iwai ◽  
Shigeo Murata ◽  
M. Tachiya
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Charge Transfer ◽  
Fluorescence Quenching ◽  
Charge Transfer Complex ◽  
A Charge

scholarly journals Electron transfer dynamics and excited state branching in a charge-transfer platinum(ii) donor–bridge-acceptor assembly

2014 ◽  
Vol 43 (47) ◽  
pp. 17677-17693 ◽  
Author(s):  
Paul A. Scattergood ◽  
Milan Delor ◽  
Igor V. Sazanovich ◽  
Oleg V. Bouganov ◽  
Sergei A. Tikhomirov ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Charge Transfer ◽  
A Charge

Photoinduced Electron Transfer in a Charge-Transfer Complex Formed between Corannulene and Li+@C60 by Concave–Convex π–π Interactions

2014 ◽  
Vol 136 (38) ◽  
pp. 13240-13248 ◽  
Author(s):  
Mihoko Yamada ◽  
Kei Ohkubo ◽  
Mitsuhiko Shionoya ◽  
Shunichi Fukuzumi
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Photoinduced Electron Transfer ◽  
Charge Transfer Complex ◽  
Π Interactions ◽  
A Charge

scholarly journals Femtosecond excited state dynamics of a stilbene–viologen charge transfer complex assembled via host–guest interaction

2017 ◽  
Vol 16 (12) ◽  
pp. 1801-1811 ◽  
Author(s):  
Mikhail V. Rusalov ◽  
Valery V. Volchkov ◽  
Vladimir L. Ivanov ◽  
Mikhail Ya. Melnikov ◽  
Ivan V. Shelaev ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Charge Transfer ◽  
Photoinduced Electron Transfer ◽  
Charge Transfer Complex ◽  
Excited State Dynamics

The ultrafast photoinduced electron transfer in a supramolecular charge transfer complex was studied.

scholarly journals Formation of a supramolecular charge-transfer complex. Ultrafast excited state dynamics and quantum-chemical calculations

2019 ◽  
Vol 18 (1) ◽  
pp. 232-241 ◽  
Author(s):  
Valery V. Volchkov ◽  
Mikhail N. Khimich ◽  
Mikhail V. Rusalov ◽  
Fedor E. Gostev ◽  
Ivan V. Shelaev ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Charge Transfer ◽  
Vibrational Relaxation ◽  
Quantum Chemical ◽  
Singlet State ◽  
Charge Transfer Complex ◽  
Relaxation Scheme ◽  
Back Electron Transfer ◽  
Fs Laser

The relaxation scheme of the 1·3 singlet state excited by a 25 fs laser pulse was proposed. It includes very fast vibrational relaxation, and direct and back electron transfer resulting in complete fluorescence quenching.

Fluorescence Quenching of Aminodiphenylamines with Chloromethanes

2002 ◽  
Vol 67 (8) ◽  
pp. 1154-1164 ◽  
Author(s):  
Nachiappan Radha ◽  
Meenakshisundaram Swaminathan
Keyword(s):  
Charge Transfer ◽  
Fluorescence Quenching ◽  
Ground State ◽  
Rate Constants ◽  
Quenching Mechanism ◽  
Quenching Rate ◽  
Charge Transfer Interaction ◽  
Electronically Excited ◽  
A Charge

The fluorescence quenching of 2-aminodiphenylamine (2ADPA), 4-aminodiphenylamine (4ADPA) and 4,4'-diaminodiphenylamine (DADPA) with tetrachloromethane, chloroform and dichloromethane have been studied in hexane, dioxane, acetonitrile and methanol as solvents. The quenching rate constants for the process have also been obtained by measuring the lifetimes of the fluorophores. The quenching was found to be dynamic in all cases. For 2ADPA and 4ADPA, the quenching rate constants of CCl4 and CHCl3 depend on the viscosity, whereas in the case of CH2Cl2, kq depends on polarity. The quenching rate constants for DADPA with CCl4 are viscosity-dependent but the quenching with CHCl3 and CH2Cl2 depends on the polarity of the solvents. From the results, the quenching mechanism is explained by the formation of a non-emissive complex involving a charge-transfer interaction between the electronically excited fluorophores and ground-state chloromethanes.

scholarly journals Anion-enhanced excited state charge separation in a spiro-locked N-heterocycle-fused push-pull zinc porphyrin

2021 ◽  
Author(s):  
Mandeep K. Chahal ◽  
Anuradha Liyanage ◽  
Ajyal Z. Alsaleh ◽  
Paul A. Karr ◽  
Jonathan P. Hill ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Charge Separation ◽  
Charge Transfer Complex ◽  
Zinc Porphyrin ◽  
New Type ◽  
State Charge

A new type of push–pull charge transfer complex, viz., a spiro-locked N-heterocycle-fused zinc porphyrin, ZnP-SQ, is shown to undergo excited state charge separation, which is enhanced by axial F− binding to the Zn center.

scholarly journals Multi-configurational Ehrenfest simulations of ultrafast nonadiabatic dynamics in a charge-transfer complex

2018 ◽  
Vol 149 (24) ◽  
pp. 244107 ◽  
Author(s):  
Tianji Ma ◽  
Matteo Bonfanti ◽  
Pierre Eisenbrandt ◽  
Rocco Martinazzo ◽  
Irene Burghardt
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Nonadiabatic Dynamics ◽  
A Charge

scholarly journals Exploring the Franck-Condon region of a photoexcited charge transfer complex in solution to interpret femtosecond stimulated Raman spectroscopy: excited state electronic structure methods to unveil non-radiative pathways

2021 ◽  
Author(s):  
Federico Coppola ◽  
Paola Cimino ◽  
Umberto Raucci ◽  
Maria Gabriella Chiariello ◽  
Alessio Petrone ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Electronic Structure ◽  
Excited State ◽  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Main Role ◽  
Photoinduced Charge Transfer ◽  
Electronic Structure Methods ◽  
Franck Condon ◽  
Photoinduced Charge

We present electronic structure methods to unveil non-radiative pathways of photoinduced charge transfer (CT) reactions that play a main role in photophysics and light harvesting technologies. A prototypical π-stacked molecular...

Sign in / Sign up

Export Citation Format

Share Document