TY - JOUR
T1 - Competing Energy Transfer Pathways in a Five-Chromophore Perylene Array
AU - Yasarapudi, Vineeth B.
AU - Frazer, Laszlo
AU - Webb, James E.A.
AU - Gallaher, Joseph K.
AU - MacMillan, Alexander
AU - Falber, Alexander
AU - Thordarson, Pall
AU - Schmidt, Timothy W.
PY - 2018/6/28
Y1 - 2018/6/28
N2 - A perylene (donor-dimer)-acceptor-(donor-dimer) pentamer array is synthesized to investigate the competition between excimer formation and Förster resonance energy transfer. Using time-resolved fluorescence, we show that, upon excitation, the isolated perylene dimer forms an excimer with a time constant of 4.3 ns. However, in the pentamer array, when either of two constituent dimers donate their energy to the acceptor fluorophore, the excimer energy trap is eliminated. The pentamer macromolecule shows broad absorption and reduced self-absorption, at some cost to fluorescence quantum yield.
AB - A perylene (donor-dimer)-acceptor-(donor-dimer) pentamer array is synthesized to investigate the competition between excimer formation and Förster resonance energy transfer. Using time-resolved fluorescence, we show that, upon excitation, the isolated perylene dimer forms an excimer with a time constant of 4.3 ns. However, in the pentamer array, when either of two constituent dimers donate their energy to the acceptor fluorophore, the excimer energy trap is eliminated. The pentamer macromolecule shows broad absorption and reduced self-absorption, at some cost to fluorescence quantum yield.
UR - http://www.scopus.com/inward/record.url?scp=85049410792&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.8b01084
DO - 10.1021/acs.jpcc.8b01084
M3 - Article
AN - SCOPUS:85049410792
SN - 1932-7447
VL - 122
SP - 13937
EP - 13943
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 25
ER -