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Royal Society of Chemistry, Organic and Biomolecular Chemistry, 43(10), p. 8684, 2012

DOI: 10.1039/c2ob26515j

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Cycloaddition reactions of polyenic donor-π-acceptor systems with an electron-rich alkyne: Access to new chromophores with second-order optical nonlinearities

Journal article published in 2012 by Elena Galán, Raquel Andreu, Javier Garín, Jesús Orduna ORCID, Belén Villacampa ORCID, Beatriz E. Diosdado
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This paper is available in a repository.

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Abstract

The formal [2 + 2] cycloaddition-cycloreversion (CA-CR) between 4-ethynyl-N,N-dimethylaniline and polyenic Donor-π-Acceptor (D-π-A) systems takes place to yield compounds bearing two donors and one acceptor. Structural, linear and second-order nonlinear optical (NLO) properties of the new molecules reveal the stronger polarization of these systems when compared to analogous merocyanines lacking the dimethylaminophenyl (DMA) ring.