The synthesis and characterisation of new trans 2-(thiophen-2-yl)vinyl pyridinium, imidazolium and quinoilinium iodides is reported together with their solvatochromic shifts and EFISH characterization. 2-{(E)-2-[5¢-(dibutylamino)-2,2¢-bithien-5-yl]vinyl}-1-methyl pyridinium and quinolinium iodides display high m.bvec values up to 1200 ¥ 10-48 esu. The promising non-linear optical (NLO) properties of this new family of chromophores, which can be further improved by the design of highly efficient systems exploiting the donor and acceptor properties of both heteroaromatic rings and substituents, make them suitable candidates for second harmonic generation imaging with interesting biological applications
Synthesis and NLO properties of new trans 2-(thiophen-2-yl)vinyl heteroaromatic iodides
FORTUNA, COSIMO GIANLUCAPrimo
;BONACCORSO, CARMELASecondo
;MUSUMARRA, Giuseppe
2011-01-01
Abstract
The synthesis and characterisation of new trans 2-(thiophen-2-yl)vinyl pyridinium, imidazolium and quinoilinium iodides is reported together with their solvatochromic shifts and EFISH characterization. 2-{(E)-2-[5¢-(dibutylamino)-2,2¢-bithien-5-yl]vinyl}-1-methyl pyridinium and quinolinium iodides display high m.bvec values up to 1200 ¥ 10-48 esu. The promising non-linear optical (NLO) properties of this new family of chromophores, which can be further improved by the design of highly efficient systems exploiting the donor and acceptor properties of both heteroaromatic rings and substituents, make them suitable candidates for second harmonic generation imaging with interesting biological applicationsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
