Charge transfer complexes involving calix[4]resorcinarenes: potential candidates for non-linear optics

✍ Scribed by Oksana Pietraszkiewicz; Małgorzata Koźbiał; Marek Pietraszkiewicz

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 150 KB
• Volume: 8
• Category: Article
• ISSN: 1616-301X
• DOI: 10.1002/(sici)1099-0712(1998090)8:5<277::aid-amo356>3.0.co;2-s

✦ Synopsis

Lipophilic calix[4]resorcinarenes-condensation products of resorcinol and lauryl aldehyde comprising four resorcinol units-form electron donor-acceptor complexes with electron acceptors tetracyanoquinodimethane (TCNQ) and tetracyanoethylene (TCNE) in organic solvents. Their formation was confirmed by EPR and UV-vis spectroscopy, except for compounds c1 and c3 which did not form charge transfer (CT) complexes with TCNE. Titration experiments involving calixarenes and electron acceptors indicated the presence of species of different stoichiometries. Complexes with ligands c1-c4 were characterised spectroscopically. CT bands appeared in most cases. *