Tetrathiafulvalene Derivatives as NLO-phores: Synthesis, Electrochemistry, Raman Spectroscopy, Theoretical Calculations, and NLO Properties of Novel TTF-Derived Donor-π-Acceptor Dyads

Autor:	Mar González, José L. Segura, López Navarrete Jt, Hernández, Rafael Alcalá, Javier Garín, Nazario Martín, Belén Villacampa, Carlos Seoane, Jesús Orduna
Rok vydání:	2001
Předmět:	chemistry.chemical_compound symbols.namesake chemistry Organic Chemistry symbols Moiety Chromophore Photochemistry Electrochemistry Raman spectroscopy Acceptor Tetrathiafulvalene
Zdroj:	The Journal of Organic Chemistry. 66:8872-8882
ISSN:	1520-6904 0022-3263
DOI:	10.1021/jo010717k
Popis:	Novel pi-conjugated donor-acceptor chromophores, based on the strong electron-donating tetrathiafulvalene moiety and different electron-withdrawing acceptors, exhibit large second-order optical nonlinearities. The effect of increasing the length of the polyenic spacer and the influence of the nature of the acceptor moiety on the NLO properties have been studied by using the electric field-induced second-harmonic generation (EFISH) technique as well as by semiempirical and ab initio theoretical calculations. A charge-transfer band has been observed in the absorption spectra of these D-pi-A compounds that undergoes an hypsochromic shift when increasing the number of vinylenic spacer units connecting both donor and acceptor moieties. The degree of the intramolecular charge transfer from the donor to the acceptor has also been analyzed by means of Raman spectroscopy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7e02c92d18c8695be09b5df50950363 https://doi.org/10.1021/jo010717k Zobrazit plný text záznamu