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Citation: ZHANG Cheng, XU Yu, XU Yi, OUYANG Mi, MA Chun-An. Synthesis and Luminescence Properties of Soluble Spirobifluorene-Based Conjugated Polymers[J]. Acta Physico-Chimica Sinica, ;2010, 26(04): 993-998. doi: 10.3866/PKU.WHXB20100403 shu

Synthesis and Luminescence Properties of Soluble Spirobifluorene-Based Conjugated Polymers

1.
State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China

Received Date: 22 September 2009
Available Online: 25 December 2009

Spirobifluorene (SPF)-based soluble copolymers containing different chain lengths of alkoxy-benzene units in the main chain were synthesized via a chemical oxidative method using FeCl3 as the catalyst. The copolymers are soluble in common organic solvents such as methylene chloride, tetrahydrofuran (THF), and chloroform. The chemical structure and luminescence properties of the as-prepared copolymers were investigated by Fourier transform infrared (FT-IR) spectroscopy, proton nuclear magnetic resonance spectroscopy (1HNMR), ultraviolet-visible (UV-Vis) spectroscopy, and photoluminescence (PL) spectroscopy. With dimethylsulfoxide (DMSO) as solvent, the copolymers emit a strong blue light. The absorption and PL emission peaks appear at 356 and 413 nm, respectively. Using quinine sulfate as the reference, the fluorescence quantum yields of the copolymers were found to be 0.69 and 0.77. Cyclic voltammetry (CV) tests indicated that the highest occupied molecular orbital (HOMO) energy levels of the copolymers are located between -5.85 and -5.69 eV.
- Photoluminescence,
- Copolymer,
- Spirobifluorene,
- Solubility,
- Chemical oxidative method
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