SYNTHESIS AND CHARACTERIZATION OF NOVEL BIPOLAR PPV-BASED COPOLYMER CONTAINING TRIAZOLE AND CARBAZOLE UNITS*

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SYNTHESIS AND CHARACTERIZATION OF NOVEL BIPOLAR PPV-BASED COPOLYMER CONTAINING TRIAZOLE AND CARBAZOLE UNITS*

Papers | Updated：2021-06-21

- SYNTHESIS AND CHARACTERIZATION OF NOVEL BIPOLAR PPV-BASED COPOLYMER CONTAINING TRIAZOLE AND CARBAZOLE UNITS*
- Vol. 19, Issue 6, Pages: 615-621(2001)
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- Published：20 December 2001
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SYNTHESIS AND CHARACTERIZATION OF NOVEL BIPOLAR PPV-BASED COPOLYMER CONTAINING TRIAZOLE AND CARBAZOLE UNITS*[J]. 2001, 19(6): 615-621.
DOI：

SYNTHESIS AND CHARACTERIZATION OF NOVEL BIPOLAR PPV-BASED COPOLYMER CONTAINING TRIAZOLE AND CARBAZOLE UNITS*[J]. 2001, 19(6): 615-621. DOI：

摘要

Two new blue light-emitting PPV-based conjugated copolymers containing both an electron-withdrawing unit(triazole-TAZ) and electron-rich moieties (carbazole-CAR and bicarbazole-BCAR were prepared by Wittig condensationpolymerization between the triazole diphosphonium salt and the corresponding dialdehyde monomers. Their structures andproperties were characterized by FT-IR

TGA

DSC

UV-Vis

PL spectroscopy and electrochemical measurements. The resulting copolymers are soluble in common organic solvents and thermally stable with a Tg of 147℃ for TAZ-CAR-PPV and of 157℃ for TAZ-BCAR-PPV.The maximum photoluminescence wavelengths of TAZ-CAR-PPV and TAZ-BCAR-PPV film appear at 460 nm and 480 nm

respectively.Cyclic voltammetry measurement demonstrates that TAZ-BCAR-PPV has good electrochemical reversibility

while TAZ-CAR-PPV exhibits the irreversible redox process.The triazole unit was found to be an effective π-conjugation interrupter and can play the rigid spacer role in determining the emission colour of the resulting copolymer.

Abstract

TGA

DSC

UV-Vis

respectively.Cyclic voltammetry measurement demonstrates that TAZ-BCAR-PPV has good electrochemical reversibility

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