Exciton self-trapping in tetrafluoro-dimethyl-aminoacridine single crystals

S. Tavazzi; L. Miozzo; A. Papagni; L. Raimondo; L. Silvestri; P. Spearman; A. Camposeo; M. Polo; D. Pisignano

doi:10.1063/1.2735622

Exciton self-trapping in tetrafluoro-dimethyl-aminoacridine single crystals

S. Tavazzi, L. Miozzo, A. Papagni, L. Raimondo, L. Silvestri, P. Spearman, A. Camposeo, M. Polo, D. Pisignano

Research output: Contribution to journal › Article › peer-review

Abstract

The UV-visible optical spectra of 1,2,3,4-tetrafluoro-7-(N,N)dimethyl-amino-acridine single crystals are reported. The results are discussed on the basis of the molecular transitions and crystal packing in the framework of the theory of molecular excitons under a fluctuating potential field due to dynamic disorder. A strong local geometry distortion is demonstrated by applying the Urbach rule to the absorption tails, which is the amplitude of the local potential fluctuation being larger than the intermolecular transfer energy. The lineshape and linewidth of the emission band and its temperature dependence give further evidence of exciton self-trapping.

Original language	English
Article number	234501
Journal	The Journal of Chemical Physics
Volume	126
Issue number	23
DOIs	https://doi.org/10.1063/1.2735622
Publication status	Published - 21 Jun 2007

Bibliographical note

Note: Article no: 234501
Article was also included in review issue Virtual Journal of Biological Physics Research, 15 June 2007.

Keywords

state emitting systems
molecular-crystals
optical-properties
Urbach rule
Chemistry

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10.1063/1.2735622

http://dx.doi.org/10.1063/1.2735622

Cite this

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title = "Exciton self-trapping in tetrafluoro-dimethyl-aminoacridine single crystals",

abstract = "The UV-visible optical spectra of 1,2,3,4-tetrafluoro-7-(N,N)dimethyl-amino-acridine single crystals are reported. The results are discussed on the basis of the molecular transitions and crystal packing in the framework of the theory of molecular excitons under a fluctuating potential field due to dynamic disorder. A strong local geometry distortion is demonstrated by applying the Urbach rule to the absorption tails, which is the amplitude of the local potential fluctuation being larger than the intermolecular transfer energy. The lineshape and linewidth of the emission band and its temperature dependence give further evidence of exciton self-trapping.",

keywords = "state emitting systems, molecular-crystals, optical-properties, Urbach rule, Chemistry",

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note = "Note: Article no: 234501 Article was also included in review issue Virtual Journal of Biological Physics Research, 15 June 2007.",

year = "2007",

month = jun,

day = "21",

doi = "10.1063/1.2735622",

language = "English",

volume = "126",

journal = "The Journal of Chemical Physics",

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T1 - Exciton self-trapping in tetrafluoro-dimethyl-aminoacridine single crystals

AU - Tavazzi, S.

AU - Miozzo, L.

AU - Papagni, A.

AU - Raimondo, L.

AU - Silvestri, L.

AU - Spearman, P.

AU - Camposeo, A.

AU - Polo, M.

AU - Pisignano, D.

N1 - Note: Article no: 234501 Article was also included in review issue Virtual Journal of Biological Physics Research, 15 June 2007.

PY - 2007/6/21

Y1 - 2007/6/21

N2 - The UV-visible optical spectra of 1,2,3,4-tetrafluoro-7-(N,N)dimethyl-amino-acridine single crystals are reported. The results are discussed on the basis of the molecular transitions and crystal packing in the framework of the theory of molecular excitons under a fluctuating potential field due to dynamic disorder. A strong local geometry distortion is demonstrated by applying the Urbach rule to the absorption tails, which is the amplitude of the local potential fluctuation being larger than the intermolecular transfer energy. The lineshape and linewidth of the emission band and its temperature dependence give further evidence of exciton self-trapping.

AB - The UV-visible optical spectra of 1,2,3,4-tetrafluoro-7-(N,N)dimethyl-amino-acridine single crystals are reported. The results are discussed on the basis of the molecular transitions and crystal packing in the framework of the theory of molecular excitons under a fluctuating potential field due to dynamic disorder. A strong local geometry distortion is demonstrated by applying the Urbach rule to the absorption tails, which is the amplitude of the local potential fluctuation being larger than the intermolecular transfer energy. The lineshape and linewidth of the emission band and its temperature dependence give further evidence of exciton self-trapping.

KW - state emitting systems

KW - molecular-crystals

KW - optical-properties

KW - Urbach rule

KW - Chemistry

UR - http://www.ncbi.nlm.nih.gov/pubmed/17600419

U2 - 10.1063/1.2735622

DO - 10.1063/1.2735622

M3 - Article

SN - 0021-9606

VL - 126

JO - The Journal of Chemical Physics

JF - The Journal of Chemical Physics

IS - 23

M1 - 234501

ER -

Exciton self-trapping in tetrafluoro-dimethyl-aminoacridine single crystals

Abstract

Bibliographical note

Keywords

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