Dyad data overviewUniversity of Vienna

31.03.2009

Janne Savolainen

University of Twente, the Netherlands

Structure

Purpurin (Pur)

Carotenoid (Car)

Absorption spectra

Pur

(dashed line)

Car (dash-dotted line)

Dyad (solid line)

Pur

Car

linker

Car: Transient absorption surface

Short Long

Car: Transient spectra and time traces

Car: SAS Target analysis results

KIC K1 K2 K3

100 fs 500 fs 7.4 ps 10.0 ps

Dyad

Structure and spectra

Fluorescence excitation spectrum: ET ~60%

Transient absorption data

carotenoid (donor)

porphyrin (acceptor)

S2

S1Q

y

S0

Sn

2

1 3S0

4

T1

Tn

Savolainen et al. J Phys Chem B 2008

Fits well to the data

Coherent Control

Feedback signals

Transient absorption spectrum at time delay of 8 ps

carotenoid (donor)

porphyrin (acceptor)

S 2

S 1Q y

S 0

70%

30%

50 fs

110 fs

S n

probe IC

pump

probe ET

S 0

7.7 psFew ns

Optimize the loss channel (IC/ET)

Optimize IC/ETusing Fourier parameterization

Optimize ET/ICusing Fourier parameterization

Savolainen et al. PNAS 2008

Savolainen et al. PNAS 2008

2D

SAS and the laser spectrum

2D at T=60 fs real part

2D at T=60 fs Car bleach

2D at T=60 fs Pur Bleach

2D at T=60 fs Qy ESA

2D at T=60 fs HotS0

2D at T=60 fs ???

2D amplitude spectrum at T=60 fs

Vibrational cross peak amplitude

Summary 2D at 60 fs real part

Carotenoid vs Dyad 2D at 0 fs amplitude spectra

Acknowledgments

FOM-institute AMOLF,University of Twente:Jennifer HerekNiels DijkuizenRiccardo Fanciulli

University of Vienna:Harald KauffmannJürgen HauerFranz Milota

Arizona state university:Ana Moore

University of Marburg:Marcus MotzkusTiago Buckup