Energy transfer within Zn-porphyrin dendrimers: Study of the singlet-singlet annihilation kinetics

Jane Larsen; Ben Brüggemann; Tomas Polivka; Villy Sundström; Eva Åkesson; J Sly; MJ Crossley

doi:10.1021/jp053514z

Energy transfer within Zn-porphyrin dendrimers: Study of the singlet-singlet annihilation kinetics

Jane Larsen, Ben Brüggemann, Tomas Polivka, Villy Sundström, Eva Åkesson, J Sly, MJ Crossley

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Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

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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.

Originalspråk	engelska
Sidor (från-till)	10654-10662
Tidskrift	The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
Volym	109
Nummer	47
DOI	https://doi.org/10.1021/jp053514z
Status	Published - 2005

Bibliografisk information

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)

Ämnesklassifikation (UKÄ)

Atom- och molekylfysik och optik

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10.1021/jp053514z

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title = "Energy transfer within Zn-porphyrin dendrimers: Study of the singlet-singlet annihilation kinetics",

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 = "Jane Larsen and Ben Br{\"u}ggemann and Tomas Polivka and Villy Sundstr{\"o}m and Eva {\AA}kesson and J Sly and MJ Crossley",

note = "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)",

year = "2005",

doi = "10.1021/jp053514z",

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Larsen, J, Brüggemann, B, Polivka, T, Sundström, V , Åkesson, E, Sly, J & Crossley, MJ 2005, 'Energy transfer within Zn-porphyrin dendrimers: Study of the singlet-singlet annihilation kinetics', The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, vol. 109, nr. 47, s. 10654-10662. https://doi.org/10.1021/jp053514z

Energy transfer within Zn-porphyrin dendrimers: Study of the singlet-singlet annihilation kinetics. / Larsen, Jane; Brüggemann, Ben; Polivka, Tomas et al.
I: The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, Vol. 109, Nr. 47, 2005, s. 10654-10662.

Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

TY - JOUR

T1 - Energy transfer within Zn-porphyrin dendrimers: Study of the singlet-singlet annihilation kinetics

AU - Larsen, Jane

AU - Brüggemann, Ben

AU - Polivka, Tomas

AU - Sundström, Villy

AU - Åkesson, Eva

AU - Sly, J

AU - Crossley, MJ

N1 - 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)

PY - 2005

Y1 - 2005

N2 - 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.

AB - 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.

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JO - The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory

JF - The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory

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ER -

Energy transfer within Zn-porphyrin dendrimers: Study of the singlet-singlet annihilation kinetics

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