TY - JOUR
T1 - Dendrimers as light harvesting antennae
AU - Bar-Haim, Arie
AU - Klafter, Joseph
N1 - Funding Information:
We thank Dr. G.M. Rozman for fruitful discussions. J.K. acknowledges the support of the German Israeli Foundation (GIF).
PY - 1998/2
Y1 - 1998/2
N2 - We consider energy transfer from an initially excited state on a dendrimer to a trap located at its center. The energy transfer process is dominated by an inherent geometric bias. We propose that dendrimers can serve as efficient artificial antenna systems for light harvesting. Based on mean first passage time calculations, we demonstrate that the effective rate of capture by the trap depends on the size of the dendrimer, the coordination number, the rates of migration, and the initial condition. The efficiency of the system increases rapidly when an energetic funnel is added, which competes with the geometric bias.
AB - We consider energy transfer from an initially excited state on a dendrimer to a trap located at its center. The energy transfer process is dominated by an inherent geometric bias. We propose that dendrimers can serve as efficient artificial antenna systems for light harvesting. Based on mean first passage time calculations, we demonstrate that the effective rate of capture by the trap depends on the size of the dendrimer, the coordination number, the rates of migration, and the initial condition. The efficiency of the system increases rapidly when an energetic funnel is added, which competes with the geometric bias.
KW - Antenna system
KW - Dendrimers
KW - Energy transfer
KW - Mean first passage time
UR - http://www.scopus.com/inward/record.url?scp=0346425992&partnerID=8YFLogxK
U2 - 10.1016/S0022-2313(97)00150-6
DO - 10.1016/S0022-2313(97)00150-6
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AN - SCOPUS:0346425992
SN - 0022-2313
VL - 76-77
SP - 197
EP - 200
JO - Journal of Luminescence
JF - Journal of Luminescence
ER -