title: A blue emission polymer: synthesis, photophysical and electrochemical properties.
abstract: A novel π-conjugated polymer (PCPyrene) containing N-benzylcarbazole and pyrene units has been synthesized and characterized. The polymer possesses high thermal stability with the decomposition temperature of 440 °C. It shows higher fluorescence quantum yields of in solution and solid state, respectively. PCPyrene can emit bright blue-lights both in different organic solutions (440-460 nm) and in the solid state (492 nm). Compared the emission spectra of PCPyrene in solutions with in solid state, the solid state emission of PCPyrene is significantly red-shifted. Additionally, it is not obvious changes of the solid emission spectra even after being annealed at 150 °C under nitrogen for 24 h. The electrochemical properties and energy levels of PCPyrene were also investigated by cyclic voltammetry. Furthermore, in order to provide a basis forecasting the structure-physical property relationships, the photophysical properties of PCPyrene have been carefully investigated by fluorescence emission and UV-vis absorption spectra.
authors.affiliation: School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, PR China.
authors.forename: Caihong
authors.initials: C
authors.lastname: Zhang
authors.forename: Lifeng
authors.initials: L
authors.lastname: Li
authors.forename: Yue
authors.initials: Y
authors.lastname: Wang
authors.forename: Liheng
authors.initials: L
authors.lastname: Feng
mesh_terms: D004563:Electrochemistry; D004583:Electrons; D055620:Optical Phenomena; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry*; D011721:Pyrenes / Q000138:chemical synthesis / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature
chemical_list: D011108:Polymers; D011721:Pyrenes
keywords: Carbazole; PLEDs; Photoluminescence; Polymer; Pyrene