Synthesis and photophysical properties of extended π conjugated naphthalimides. Issue 4 (26th January 2017)

• Record Type: Journal Article
• Authors: Rémy, C.; Allain, C.; Leray, I.
• Is Part Of: Photochemical & photobiological sciences. Volume 16:Issue 4(2017)
• Page Start: 539
• Page End: 546
• Publication Date: 2017-01-26
• Subjects: Photochemistry -- Periodicals; Photobiology -- Periodicals; 541.35
• DOI: 10.1039/c6pp00372a
• Languages: English
• ISSNs: 1474-905X

Abstract

Abstract : A series of π conjugated naphthalimide derivatives were prepared. Compounds display efficient photoinduced charge transfer in solution which was rationalized by time-resolved spectroscopy and modelled by TD-DFT calculations. Abstract : A series of π conjugated naphthalimide derivatives having an imide group as an acceptor conjugated with a methoxy arylethynyl or a methoxyphenyl triazole as a donor were prepared by Sonogashira coupling or "click" chemistry. Their photophysical properties were investigated by steady state and time resolved fluorescence spectroscopy and modelled by TD-DFT calculations. Compound Naphth-AlkyneOMe has a high fluorescence quantum yield and displays efficient photoinduced charge transfer in solution as well as in the powder state. Compound Naphth-TriazoleOMe exhibits a very high Stokes shift and its fluorescence quantum yield is low, which can be rationalized by theoretical calculations.