Energy transfer within Zn-porphyrin dendrimers: Study of the singlet-singlet annihilation kinetics
(2005) In The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory 109(47). p.10654-10662- Abstract
- In this article, we explore energy transfer processes within a series of Zn-porphyrin-appended dendrimers by means of excitation intensity dependent transient absorption measurements. We report singlet-singlet annihilation on two distinct time scales of 18 +/- 5 ps and 130 +/- 10 ps in the dimer and the dendrimers. The two distinct processes reflect the presence of two structural conformer distributions. Analysis of the singlet-singlet annihilation transient kinetics shows that sequential annihilation occurs within subunits up to four Zn-porphyrins in the dendrimers. The onset of the singlet-singlet annihilation process depending on the size of the Molecule reveals a difference in the number Of Communicating Zn-porphyrins. We further... (More)
- In this article, we explore energy transfer processes within a series of Zn-porphyrin-appended dendrimers by means of excitation intensity dependent transient absorption measurements. We report singlet-singlet annihilation on two distinct time scales of 18 +/- 5 ps and 130 +/- 10 ps in the dimer and the dendrimers. The two distinct processes reflect the presence of two structural conformer distributions. Analysis of the singlet-singlet annihilation transient kinetics shows that sequential annihilation occurs within subunits up to four Zn-porphyrins in the dendrimers. The onset of the singlet-singlet annihilation process depending on the size of the Molecule reveals a difference in the number Of Communicating Zn-porphyrins. We further report a full characterization of the transient absorption kinetics of the monomer over a spectral range from 450 to 730 nm. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/151787
- author
- Larsen, Jane LU ; Brüggemann, Ben LU ; Polivka, Tomas LU ; Sundström, Villy LU ; Åkesson, Eva LU ; Sly, J and Crossley, MJ
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
- volume
- 109
- issue
- 47
- pages
- 10654 - 10662
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000233684700005
- scopus:29144432682
- ISSN
- 1520-5215
- DOI
- 10.1021/jp053514z
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
- id
- 7b18feb1-51f9-4213-b4b7-62d37b1eeb85 (old id 151787)
- date added to LUP
- 2016-04-01 15:40:19
- date last changed
- 2023-04-07 13:57:46
@article{7b18feb1-51f9-4213-b4b7-62d37b1eeb85, abstract = {{In this article, we explore energy transfer processes within a series of Zn-porphyrin-appended dendrimers by means of excitation intensity dependent transient absorption measurements. We report singlet-singlet annihilation on two distinct time scales of 18 +/- 5 ps and 130 +/- 10 ps in the dimer and the dendrimers. The two distinct processes reflect the presence of two structural conformer distributions. Analysis of the singlet-singlet annihilation transient kinetics shows that sequential annihilation occurs within subunits up to four Zn-porphyrins in the dendrimers. The onset of the singlet-singlet annihilation process depending on the size of the Molecule reveals a difference in the number Of Communicating Zn-porphyrins. We further report a full characterization of the transient absorption kinetics of the monomer over a spectral range from 450 to 730 nm.}}, author = {{Larsen, Jane and Brüggemann, Ben and Polivka, Tomas and Sundström, Villy and Åkesson, Eva and Sly, J and Crossley, MJ}}, issn = {{1520-5215}}, language = {{eng}}, number = {{47}}, pages = {{10654--10662}}, publisher = {{The American Chemical Society (ACS)}}, series = {{The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory}}, title = {{Energy transfer within Zn-porphyrin dendrimers: Study of the singlet-singlet annihilation kinetics}}, url = {{http://dx.doi.org/10.1021/jp053514z}}, doi = {{10.1021/jp053514z}}, volume = {{109}}, year = {{2005}}, }