MersV1, France, Analysis, bibRecord, 000088

Difluorenyl carbo-Benzenes: Synthesis, Electronic Structure, and Two-Photon Absorption Properties of Hydrocarbon Quadrupolar Chromophores.

Identifieur interne : 000088 ( France/Analysis ); précédent : 000087; suivant : 000089

Difluorenyl carbo-Benzenes: Synthesis, Electronic Structure, and Two-Photon Absorption Properties of Hydrocarbon Quadrupolar Chromophores.

Auteurs : Iaroslav Baglai ; Manuel De Anda-Villa ; Rodrigo M. Barba-Barba ; Corentin Poidevin ; Gabriel Ramos-Ortíz [Mexique] ; Valérie Maraval [France] ; Christine Lepetit ; Nathalie Saffon-Merceron ; José-Luis Maldonado ; Remi Chauvin [France]

Source :

Chemistry (Weinheim an der Bergstrasse, Germany) [ 1521-3765 ] ; 2015.

RBID : pubmed:26267308

Abstract

The synthesis, crystal and electronic structures, and one- and two-photon absorption properties of two quadrupolar fluorenyl-substituted tetraphenyl carbo-benzenes are described. These all-hydrocarbon chromophores, differing in the nature of the linkers between the fluorenyl substituents and the carbo-benzene core (C-C bonds for 3 a, C-C=C-C expanders for 3 b), exhibit quasi-superimposable one-photon absorption (1PA) spectra but different two-photon absorption (2PA) cross-sections σ2PA. Z-scan measurements (under NIR femtosecond excitation) indeed showed that the C≡C expansion results in an approximately twofold increase in the σ2PA value, from 336 to 656 GM (1 GM = 10(-50) cm(4) s molecule(-1) photon(-1)) at λ = 800 nm. The first excited states of Au and Ag symmetry accounting for 1PA and 2PA, respectively, were calculated at the TDDFT level of theory and used for sum-over-state estimations of σ2PA(λi), in which λi = 2 hc/Ei, h is Planck's constant, c is the speed of light, and Ei is the energy of the 2PA-allowed transition. The calculated σ2PA values of 227 GM at 687 nm for 3 a and 349 GM at 708 nm for 3 b are in agreement with the Z-scan results.

DOI: 10.1002/chem.201500482
PubMed: 26267308

Affiliations:

France, Mexique

Links to Exploration step

pubmed:26267308

Le document en format XML

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<affiliation wicri:level="1"><nlm:affiliation>CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse CEDEX 4 (France). chauvin@lcc-toulouse.fr.</nlm:affiliation>
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<author><name sortKey="Lepetit, Christine" sort="Lepetit, Christine" uniqKey="Lepetit C" first="Christine" last="Lepetit">Christine Lepetit</name>
<affiliation><nlm:affiliation>CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse CEDEX 4 (France).</nlm:affiliation>
<wicri:noCountry code="subField">31077 Toulouse CEDEX 4 (France)</wicri:noCountry>
</affiliation>
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<author><name sortKey="Saffon Merceron, Nathalie" sort="Saffon Merceron, Nathalie" uniqKey="Saffon Merceron N" first="Nathalie" last="Saffon-Merceron">Nathalie Saffon-Merceron</name>
<affiliation><nlm:affiliation>Université de Toulouse, UPS, ICT-FR 2599, 31062 Toulouse CEDEX 9 (France).</nlm:affiliation>
<wicri:noCountry code="subField">31062 Toulouse CEDEX 9 (France)</wicri:noCountry>
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<author><name sortKey="Maldonado, Jose Luis" sort="Maldonado, Jose Luis" uniqKey="Maldonado J" first="José-Luis" last="Maldonado">José-Luis Maldonado</name>
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<front><div type="abstract" xml:lang="en">The synthesis, crystal and electronic structures, and one- and two-photon absorption properties of two quadrupolar fluorenyl-substituted tetraphenyl carbo-benzenes are described. These all-hydrocarbon chromophores, differing in the nature of the linkers between the fluorenyl substituents and the carbo-benzene core (C-C bonds for 3 a, C-C=C-C expanders for 3 b), exhibit quasi-superimposable one-photon absorption (1PA) spectra but different two-photon absorption (2PA) cross-sections σ2PA. Z-scan measurements (under NIR femtosecond excitation) indeed showed that the C≡C expansion results in an approximately twofold increase in the σ2PA value, from 336 to 656 GM (1 GM = 10(-50) cm(4) s molecule(-1) photon(-1)) at λ = 800 nm. The first excited states of Au and Ag symmetry accounting for 1PA and 2PA, respectively, were calculated at the TDDFT level of theory and used for sum-over-state estimations of σ2PA(λi), in which λi = 2 hc/Ei, h is Planck's constant, c is the speed of light, and Ei is the energy of the 2PA-allowed transition. The calculated σ2PA values of 227 GM at 687 nm for 3 a and 349 GM at 708 nm for 3 b are in agreement with the Z-scan results.</div>
</front>
</TEI>
<affiliations><list><country><li>France</li>
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<tree><noCountry><name sortKey="Baglai, Iaroslav" sort="Baglai, Iaroslav" uniqKey="Baglai I" first="Iaroslav" last="Baglai">Iaroslav Baglai</name>
<name sortKey="Barba Barba, Rodrigo M" sort="Barba Barba, Rodrigo M" uniqKey="Barba Barba R" first="Rodrigo M" last="Barba-Barba">Rodrigo M. Barba-Barba</name>
<name sortKey="De Anda Villa, Manuel" sort="De Anda Villa, Manuel" uniqKey="De Anda Villa M" first="Manuel" last="De Anda-Villa">Manuel De Anda-Villa</name>
<name sortKey="Lepetit, Christine" sort="Lepetit, Christine" uniqKey="Lepetit C" first="Christine" last="Lepetit">Christine Lepetit</name>
<name sortKey="Maldonado, Jose Luis" sort="Maldonado, Jose Luis" uniqKey="Maldonado J" first="José-Luis" last="Maldonado">José-Luis Maldonado</name>
<name sortKey="Poidevin, Corentin" sort="Poidevin, Corentin" uniqKey="Poidevin C" first="Corentin" last="Poidevin">Corentin Poidevin</name>
<name sortKey="Saffon Merceron, Nathalie" sort="Saffon Merceron, Nathalie" uniqKey="Saffon Merceron N" first="Nathalie" last="Saffon-Merceron">Nathalie Saffon-Merceron</name>
</noCountry>
<country name="Mexique"><noRegion><name sortKey="Ramos Ortiz, Gabriel" sort="Ramos Ortiz, Gabriel" uniqKey="Ramos Ortiz G" first="Gabriel" last="Ramos-Ortíz">Gabriel Ramos-Ortíz</name>
</noRegion>
</country>
<country name="France"><noRegion><name sortKey="Maraval, Valerie" sort="Maraval, Valerie" uniqKey="Maraval V" first="Valérie" last="Maraval">Valérie Maraval</name>
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<name sortKey="Chauvin, Remi" sort="Chauvin, Remi" uniqKey="Chauvin R" first="Remi" last="Chauvin">Remi Chauvin</name>
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</record>

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Difluorenyl carbo-Benzenes: Synthesis, Electronic Structure, and Two-Photon Absorption Properties of Hydrocarbon Quadrupolar Chromophores.

Difluorenyl carbo-Benzenes: Synthesis, Electronic Structure, and Two-Photon Absorption Properties of Hydrocarbon Quadrupolar Chromophores.

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Abstract

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