Raman spectroscopy shows interchain through space charge delocalization in a mixed valence oligothiophene cation and in its π-dimeric biradicaloid dication

Juan Casado; Kazuo Takimiya; Tetsuo Otsubo; Francisco J. Ramírez; J. Joaquín Quírante; Rocío Ponce Ortiz; Sandra R. González; María Moreno Oliva; Juan T. López Navarrete

doi:10.1021/ja806207j

Raman spectroscopy shows interchain through space charge delocalization in a mixed valence oligothiophene cation and in its π-dimeric biradicaloid dication

Juan Casado, Kazuo Takimiya, Tetsuo Otsubo, Francisco J. Ramírez, J. Joaquín Quírante, Rocío Ponce Ortiz, Sandra R. González, María Moreno Oliva, Juan T. López Navarrete

SCI - Chemistry

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

31 Citations (Scopus)

Abstract

The vibrational Raman spectra of a decathiophene are provided in three relevant oxidations states: for the radical cation, its class III mixed valence system and its "frozen, -170 °C" class II MV analogue; for the dication, its singlet biradical π-dimer and its "hot, +70 °C" magnetically active triplet excited state. Everything is compatible with interpentathiophene charge delocalization occurring at distances of ∼4-5 Å similar to those found in the crystals of π-stacked oligothiophenes. This stresses the interest of this spectroscopic tool for the analyses of electronic processes in crystals or in thin films of conjugated organic molecules.

Original language	English
Pages (from-to)	14028-14029
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	130
Issue number	43
DOIs	https://doi.org/10.1021/ja806207j
Publication status	Published - 2008 Oct 29

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Casado, J., Takimiya, K., Otsubo, T., Ramírez, F. J., Joaquín Quírante, J., Ponce Ortiz, R., González, S. R., Moreno Oliva, M., & López Navarrete, J. T. (2008). Raman spectroscopy shows interchain through space charge delocalization in a mixed valence oligothiophene cation and in its π-dimeric biradicaloid dication. Journal of the American Chemical Society, 130(43), 14028-14029. https://doi.org/10.1021/ja806207j

@article{f5e07127c1ff48e2b253f1fa8571b4c3,

title = "Raman spectroscopy shows interchain through space charge delocalization in a mixed valence oligothiophene cation and in its π-dimeric biradicaloid dication",

abstract = "The vibrational Raman spectra of a decathiophene are provided in three relevant oxidations states: for the radical cation, its class III mixed valence system and its {"}frozen, -170 °C{"} class II MV analogue; for the dication, its singlet biradical π-dimer and its {"}hot, +70 °C{"} magnetically active triplet excited state. Everything is compatible with interpentathiophene charge delocalization occurring at distances of ∼4-5 {\AA} similar to those found in the crystals of π-stacked oligothiophenes. This stresses the interest of this spectroscopic tool for the analyses of electronic processes in crystals or in thin films of conjugated organic molecules.",

author = "Juan Casado and Kazuo Takimiya and Tetsuo Otsubo and Ram{\'i}rez, {Francisco J.} and {Joaqu{\'i}n Qu{\'i}rante}, J. and {Ponce Ortiz}, Roc{\'i}o and Gonz{\'a}lez, {Sandra R.} and {Moreno Oliva}, Mar{\'i}a and {L{\'o}pez Navarrete}, {Juan T.}",

year = "2008",

month = oct,

day = "29",

doi = "10.1021/ja806207j",

language = "English",

volume = "130",

pages = "14028--14029",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "American Chemical Society",

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Casado, J, Takimiya, K, Otsubo, T, Ramírez, FJ, Joaquín Quírante, J, Ponce Ortiz, R, González, SR, Moreno Oliva, M & López Navarrete, JT 2008, 'Raman spectroscopy shows interchain through space charge delocalization in a mixed valence oligothiophene cation and in its π-dimeric biradicaloid dication', Journal of the American Chemical Society, vol. 130, no. 43, pp. 14028-14029. https://doi.org/10.1021/ja806207j

Raman spectroscopy shows interchain through space charge delocalization in a mixed valence oligothiophene cation and in its π-dimeric biradicaloid dication. / Casado, Juan; Takimiya, Kazuo; Otsubo, Tetsuo et al.
In: Journal of the American Chemical Society, Vol. 130, No. 43, 29.10.2008, p. 14028-14029.

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

TY - JOUR

T1 - Raman spectroscopy shows interchain through space charge delocalization in a mixed valence oligothiophene cation and in its π-dimeric biradicaloid dication

AU - Casado, Juan

AU - Takimiya, Kazuo

AU - Otsubo, Tetsuo

AU - Ramírez, Francisco J.

AU - Joaquín Quírante, J.

AU - Ponce Ortiz, Rocío

AU - González, Sandra R.

AU - Moreno Oliva, María

AU - López Navarrete, Juan T.

PY - 2008/10/29

Y1 - 2008/10/29

N2 - The vibrational Raman spectra of a decathiophene are provided in three relevant oxidations states: for the radical cation, its class III mixed valence system and its "frozen, -170 °C" class II MV analogue; for the dication, its singlet biradical π-dimer and its "hot, +70 °C" magnetically active triplet excited state. Everything is compatible with interpentathiophene charge delocalization occurring at distances of ∼4-5 Å similar to those found in the crystals of π-stacked oligothiophenes. This stresses the interest of this spectroscopic tool for the analyses of electronic processes in crystals or in thin films of conjugated organic molecules.

AB - The vibrational Raman spectra of a decathiophene are provided in three relevant oxidations states: for the radical cation, its class III mixed valence system and its "frozen, -170 °C" class II MV analogue; for the dication, its singlet biradical π-dimer and its "hot, +70 °C" magnetically active triplet excited state. Everything is compatible with interpentathiophene charge delocalization occurring at distances of ∼4-5 Å similar to those found in the crystals of π-stacked oligothiophenes. This stresses the interest of this spectroscopic tool for the analyses of electronic processes in crystals or in thin films of conjugated organic molecules.

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ER -

Raman spectroscopy shows interchain through space charge delocalization in a mixed valence oligothiophene cation and in its π-dimeric biradicaloid dication

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