Electrofluorescence switching from a multilayer thin film by spin-assisted layer-by-layer assembly of an anionic fluorescent conjugated polyelectrolyte with poly(diallyldimethylammonium chloride)

An electrofluorochromic conjugated polyelectrolyte, PFTSO 3 Na as a polyanion, was synthesized and used in the fabrication of layer-by-layer (LbL) assembled multilayer film with poly(diallyldimethylammonium chloride) (PDDA) as a polycation. The electrofluorescent device (EFD) fabricated from the mul...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2014-01, Vol.16 (1), p.79-87
Main Authors: Kuo, Cheng-Po, Leung, Man-kit
Format: Article
Language:English
Subjects:
Assembly
Electrochemistry
Optical Phenomena
Polyethylenes - chemistry
Quaternary Ammonium Compounds - chemistry
Spectrometry, Fluorescence
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Summary:An electrofluorochromic conjugated polyelectrolyte, PFTSO 3 Na as a polyanion, was synthesized and used in the fabrication of layer-by-layer (LbL) assembled multilayer film with poly(diallyldimethylammonium chloride) (PDDA) as a polycation. The electrofluorescent device (EFD) fabricated from the multilayer thin film of PFTSO 3 Na /PDDA emits blue light under UV excitation. The fluorescence intensity can be switched off upon electrochemical oxidation. The electrofluorescent behavior of the EFD is reversible and can be switched between the non-fluorescent (oxidized) state and the fluorescent (neutral) state with a maximum contrast ratio ( I f / I f0 ) of 5.20. While the electrofluorescent device fabricated using a multilayer film of PFTSO 3 Na /PDDA emits blue light under UV excitation, the fluorescent behavior can be reversibly switched between the non-fluorescent (oxidized) state and the fluorescent (neutral) state.
ISSN:1463-9076
1463-9084
DOI:10.1039/c3cp53912a