Abstract
Small- and wide-angle X-ray scattering (SAXS/WAXS) and DOSY 1H NMR reveal that a zinc methyl pyrochlorophyllide a (Chl) derivative with a 3-pyridyl ligand at the Chl 20-position self-assembles in toluene solution into a cyclic trimer having a radius of 8.2 ± 0.1 Å. Femtosecond transient absorption spectroscopy shows that singlet-singlet annihilation occurs within the cyclic trimer as a result of energy transfer between the Chls that occurs with an (11 ± 1 ps)-1 rate constant, which agrees with the predictions of Förster theory, even though the Chl-Chl distances are comparable to the length of the Chl transition dipole.
| Original language | English |
|---|---|
| Pages (from-to) | 303-307 |
| Number of pages | 5 |
| Journal | Chemical Physics Letters |
| Volume | 556 |
| DOIs | |
| Publication status | Published - Jan 29 2013 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Physics and Astronomy(all)
Cite this
Self-assembly of a chlorophyll-based cyclic trimer : Structure and intramolecular energy transfer. / Gunderson, Victoria L.; Wasielewski, Michael R.
In: Chemical Physics Letters, Vol. 556, 29.01.2013, p. 303-307.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Self-assembly of a chlorophyll-based cyclic trimer
T2 - Structure and intramolecular energy transfer
AU - Gunderson, Victoria L.
AU - Wasielewski, Michael R
PY - 2013/1/29
Y1 - 2013/1/29
N2 - Small- and wide-angle X-ray scattering (SAXS/WAXS) and DOSY 1H NMR reveal that a zinc methyl pyrochlorophyllide a (Chl) derivative with a 3-pyridyl ligand at the Chl 20-position self-assembles in toluene solution into a cyclic trimer having a radius of 8.2 ± 0.1 Å. Femtosecond transient absorption spectroscopy shows that singlet-singlet annihilation occurs within the cyclic trimer as a result of energy transfer between the Chls that occurs with an (11 ± 1 ps)-1 rate constant, which agrees with the predictions of Förster theory, even though the Chl-Chl distances are comparable to the length of the Chl transition dipole.
AB - Small- and wide-angle X-ray scattering (SAXS/WAXS) and DOSY 1H NMR reveal that a zinc methyl pyrochlorophyllide a (Chl) derivative with a 3-pyridyl ligand at the Chl 20-position self-assembles in toluene solution into a cyclic trimer having a radius of 8.2 ± 0.1 Å. Femtosecond transient absorption spectroscopy shows that singlet-singlet annihilation occurs within the cyclic trimer as a result of energy transfer between the Chls that occurs with an (11 ± 1 ps)-1 rate constant, which agrees with the predictions of Förster theory, even though the Chl-Chl distances are comparable to the length of the Chl transition dipole.
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UR - http://www.scopus.com/inward/citedby.url?scp=84872303057&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2012.12.025
DO - 10.1016/j.cplett.2012.12.025
M3 - Article
AN - SCOPUS:84872303057
VL - 556
SP - 303
EP - 307
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
ER -