Molecular origin of the temperature-dependent energy migration in a rigid-rod ladder-phenylene molecular host

Herbert Wiesenhofer; Egbert Zojer; Emil J.W. List; Ullrich Scherf; Jean Luc Brédas; David Beljonne

doi:10.1002/adma.200501473

Molecular origin of the temperature-dependent energy migration in a rigid-rod ladder-phenylene molecular host

Herbert Wiesenhofer, Egbert Zojer, Emil J.W. List, Ullrich Scherf, Jean Luc Brédas, David Beljonne

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24 Scopus citations

Abstract

The molecular origin of the temperature-dependent emission lineshapes and linewidths in a model system of a rigid-rod ladder-phenylene molecular host, was analyzed. The investigated system consists of a five-ring ladder-type paraphenylene oligomer host incorporated into an inert polystyrene matrix doped with a molecular guest that has a high luminescence quantum yield. The temperature-dependent homogeneous broadening in the phenylene-based five-ring ladder-type paraphenylene oligomer host (5LOPP) has been rationalized in terms of coupling of the electronic excitations to specific low-frequency vibrational modes. The results show that this model provides an unambiguous correlation between the T-dependent spectral lineshapes and the diffusion dynamics.

Original language	English (US)
Pages (from-to)	310-314
Number of pages	5
Journal	Advanced Materials
Volume	18
Issue number	3
DOIs	https://doi.org/10.1002/adma.200501473
State	Published - Feb 3 2006
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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title = "Molecular origin of the temperature-dependent energy migration in a rigid-rod ladder-phenylene molecular host",

abstract = "The molecular origin of the temperature-dependent emission lineshapes and linewidths in a model system of a rigid-rod ladder-phenylene molecular host, was analyzed. The investigated system consists of a five-ring ladder-type paraphenylene oligomer host incorporated into an inert polystyrene matrix doped with a molecular guest that has a high luminescence quantum yield. The temperature-dependent homogeneous broadening in the phenylene-based five-ring ladder-type paraphenylene oligomer host (5LOPP) has been rationalized in terms of coupling of the electronic excitations to specific low-frequency vibrational modes. The results show that this model provides an unambiguous correlation between the T-dependent spectral lineshapes and the diffusion dynamics.",

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T1 - Molecular origin of the temperature-dependent energy migration in a rigid-rod ladder-phenylene molecular host

AU - Wiesenhofer, Herbert

AU - Zojer, Egbert

AU - List, Emil J.W.

AU - Scherf, Ullrich

AU - Brédas, Jean Luc

AU - Beljonne, David

PY - 2006/2/3

Y1 - 2006/2/3

N2 - The molecular origin of the temperature-dependent emission lineshapes and linewidths in a model system of a rigid-rod ladder-phenylene molecular host, was analyzed. The investigated system consists of a five-ring ladder-type paraphenylene oligomer host incorporated into an inert polystyrene matrix doped with a molecular guest that has a high luminescence quantum yield. The temperature-dependent homogeneous broadening in the phenylene-based five-ring ladder-type paraphenylene oligomer host (5LOPP) has been rationalized in terms of coupling of the electronic excitations to specific low-frequency vibrational modes. The results show that this model provides an unambiguous correlation between the T-dependent spectral lineshapes and the diffusion dynamics.

AB - The molecular origin of the temperature-dependent emission lineshapes and linewidths in a model system of a rigid-rod ladder-phenylene molecular host, was analyzed. The investigated system consists of a five-ring ladder-type paraphenylene oligomer host incorporated into an inert polystyrene matrix doped with a molecular guest that has a high luminescence quantum yield. The temperature-dependent homogeneous broadening in the phenylene-based five-ring ladder-type paraphenylene oligomer host (5LOPP) has been rationalized in terms of coupling of the electronic excitations to specific low-frequency vibrational modes. The results show that this model provides an unambiguous correlation between the T-dependent spectral lineshapes and the diffusion dynamics.

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Molecular origin of the temperature-dependent energy migration in a rigid-rod ladder-phenylene molecular host

Abstract

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