New Blue-Photoluminescent Semi-Conducting Polymer Derived from Fluorinated Bisphenol A

Nejmeddine Jaballah (1) , Khaled Hriz (1) , Mustapha Majdoub (1) , Mohamed Jouini (2) , Jean-Louis Fave (3)

1 FSM - Faculté des Sciences de Monastir
2 ITODYS (UMR_7086) - Interfaces, Traitements, Organisation et Dynamique des Systèmes
3 INSP - Institut des Nanosciences de Paris

A new confined p-phenylenevinylene (PPV)-type polymer (BPAF-PPV) has been synthesized using Wittig condensation. The chemical structure of the polymer was well defined by (1)H-NMR, (13)C-NMR, and FT-IR spectroscopic analysis. BPAF-PPV contains oligomeric PPV units separated by hexafluoroisopropylidene groups in the main chain; it is fully soluble in common organic solvents and has a number-average molecular weight of 4570 g mol(-1). Differential scanning calorimetry indicates that BPAF-PPV is amorphous and displays a glass transition temperature of 114 degrees C. The optical properties of the polymer were investigated by UV-visible absorption and photoluminescence spectroscopies. Its thin film showed a blue photoluminescence with a narrow emission spectrum. A high photoluminescence quantum efficiency of about 83% was determined in dilute solution. From the cyclic voltammetry analysis, the electrochemical bandgap was estimated to be 3.08 eV. A single-layer diode device of the configuration indium-tin oxide/BPAF-PPV/aluminium has been fabricated and has a relatively low turn-on voltage of 3.0 V.

Mots clés: Conjugated semi-conducting polymers; confined p-phenylenevinylene; blue photoluminescence; fluorinated bisphenol A

Domaines: Polymères

Nejmeddine Jaballah, Khaled Hriz, Mustapha Majdoub, Mohamed Jouini, Jean-Louis Fave. New Blue-Photoluminescent Semi-Conducting Polymer Derived from Fluorinated Bisphenol A. High Performance Polymers, 2010, 22 (4), pp.483-497. ⟨10.1177/0954008309348664⟩. ⟨hal-01236810⟩