Blue Solid-State Photoluminescence and Electroluminescence from Novel Poly(para-phenyleneethynylene) Copolymers

摘要: We report the synthesis of a series random copolymers composed phenyleneethynylene and 3,7-di-tert-butylnaphthalene units by alkyne metathesis with simple catalyst systems, formed from Mo(CO)6 4-chlorophenol in situ. These novel give rise to efficient (Φ = 0.16−0.76) blue solid-state emission (λmax 422−443 nm) which can be fine-tuned according their naphthalene content differing greatly that standard dialkyl-PPE 500−520 nm). The effective blue-shifted is result disrupting alignment thereby diminishing π-π interactions addition interruption planarization conjugated backbone. Electroluminescent multilayer devices showed low turn-on voltages (5.5 V) maximum brightness 100 cd/m2.