Excited-State Kinetics of the Carotenoid S1State in LHC II and Two-Photon Excitation Spectra of Lutein and β-Carotene in Solution:  Efficient Car S1→Chl Electronic Energy Transfer via Hot S1States?†

2002 ◽  
Vol 106 (10) ◽  
pp. 1909-1916 ◽  
Author(s):  
Peter J. Walla ◽  
Patricia A. Linden ◽  
Kaoru Ohta ◽  
Graham R. Fleming
Keyword(s):  
Energy Transfer ◽  
Excited State ◽  
Electronic Energy ◽  
Excitation Spectra ◽  
Lhc Ii ◽  
Electronic Energy Transfer ◽  
Two Photon ◽  
Photon Excitation ◽  
Kinetics Of ◽  
Β Carotene

The photophysics of metalloporphyrins excited in their Soret and higher energy UV absorption bands

2007 ◽  
Vol 11 (04) ◽  
pp. 228-243 ◽  
Author(s):  
Umakanta Tripathy ◽  
Ronald P. Steer
Keyword(s):  
Energy Transfer ◽  
Transition Metals ◽  
Electronic Energy ◽  
Relaxation Dynamics ◽  
Absorption Bands ◽  
Electronic Energy Transfer ◽  
Two Photon ◽  
Photon Excitation ◽  
Singlet States ◽  
D Orbitals

Photophysical processes involving the higher electronic excited states of diamagnetic porphyrins and metalloporphyrins are critically reviewed. Intramolecular electronic relaxation of one-photon Soret-excited molecules in solution is now known to involve processes other than S 2 - S 1 internal conversion; dark electronic states are implicated. Sequential two-photon excitation to produce gerade excited singlet states ( S n , n > 2) results in relaxation dynamics that are quantitatively different from those resulting from one-photon excitation to ungerade states of about the same energy. Intermolecular electron and electronic energy transfer involving Soret-excited metalloporphyrins and intramolecular electron and electronic energy transfer in Soret-excited dyads and larger arrays containing porphyrins are reviewed. Metalloporphyrins containing main group metals or transition metals with filled d orbitals exhibit relaxation dynamics that differ from metalloporphyrins containing transition metals with unfilled d orbitals. Non-linear phenomena associated with multi-photon excitation of diamagnetic metalloporphyrins are also reviewed.

ChemInform Abstract: Reversible Electronic Energy Transfer: A Means to Govern Excited-State Properties of Supramolecular Systems

ChemInform ◽  
2010 ◽  
Vol 41 (17) ◽  
Author(s):  
Aurelie Lavie-Cambot ◽  
Christophe Lincheneau ◽  
Martine Cantuel ◽  
Yoann Leydet ◽  
Nathan D. McClenaghan
Keyword(s):  
Energy Transfer ◽  
Excited State ◽  
Electronic Energy ◽  
Supramolecular Systems ◽  
Electronic Energy Transfer

XeO∗ production through collisional electronic energy transfer from two-photon excited Xe atoms

1978 ◽  
Vol 49 (4) ◽  
pp. 2219 ◽  
Author(s):  
D. Kligler ◽  
D. Pritchard ◽  
W. K. Bischel ◽  
C. K. Rhodes
Keyword(s):  
Energy Transfer ◽  
Electronic Energy ◽  
Electronic Energy Transfer ◽  
Two Photon
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