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Synthesis and photo-physical properties of fluorescent 1,3,5-triazine styryl derivatives
Vikas S Padalkar1, Vikas S Patil, N Sekar
1Department of Intermediate and Dyestuff Technology, Institute of Chemical Technology (Formerly UDCT), N, P, Marg, Matunga, Mumbai-400 019, Maharashtra, India. n.sekar@ictmumbai.edu.in.
Background:
Organic fluorophore contains well-defined D-π-A (Donor-π system-Acceptor) push-pull system have wide application in the field of NLO, OLED and high tech application. Electron donor diphenyl, triphenyl and carbazole conjugated with electron acceptor terminal through π-system were reported recently for high-tech applications. N,N-Dialkyl substituted 1,3,5-triazine also acts as donor keeping this idea in mind we developed D-π-A styryl dyes.
Results:
Novel "Y"-shaped acceptor-π-donor-π-acceptor type of compounds were synthesized from 4,4'-((6-(4-(diethylamino)phenyl)-1,3,5-triazine-2,4diyl)bis(oxy)) dibenzaldehyde (DIPOD) as electron donors and different active methylene compounds as electron acceptors by conventional Knoevenagel condensation reaction. Their photophysical and thermal properties were investigated.
Conclusion:
It was found that the strong electron acceptor-donor chromophoric system of these compounds showed high Stoke's shift and excellent thermal stability. Compounds showed positive solvatofluorism behavior from nonpolar to polar solvent. All compounds have good thermal stability.
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