Single-Molecule Spectroscopy and AFM Morphology Studies of a Diblock Copolymer Consisting of Poly(3-hexylthiophene) and Fullerene

Authors

  • Zhongjian Hu,

    1. NanoScience Technology Center, Department of Chemistry and CREOL, The College of Optics and Photonics, University of Central Florida, 12424 Research Parkway Suite 400, Orlando FL32826, USA
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    • Z. Hu and J. Zou contributed equally to this work.

  • Jianhua Zou,

    1. NanoScience Technology Center, Department of Chemistry and CREOL, The College of Optics and Photonics, University of Central Florida, 12424 Research Parkway Suite 400, Orlando FL32826, USA
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    • Z. Hu and J. Zou contributed equally to this work.

  • Carsten Deibel,

    1. Experimental Physics VI, Julius-Maximilian-University Würzburg, 97074 Würzburg, Germany
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  • Andre J. Gesquiere,

    Corresponding author
    1. NanoScience Technology Center, Department of Chemistry and CREOL, The College of Optics and Photonics, University of Central Florida, 12424 Research Parkway Suite 400, Orlando FL32826, USA
    • NanoScience Technology Center, Department of Chemistry and CREOL, The College of Optics and Photonics, University of Central Florida, 12424 Research Parkway Suite 400, Orlando FL 32826, USA. Fax: +1 407 882 2819
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  • Lei Zhai

    Corresponding author
    1. NanoScience Technology Center, Department of Chemistry and CREOL, The College of Optics and Photonics, University of Central Florida, 12424 Research Parkway Suite 400, Orlando FL32826, USA
    • NanoScience Technology Center, Department of Chemistry and CREOL, The College of Optics and Photonics, University of Central Florida, 12424 Research Parkway Suite 400, Orlando FL 32826, USA. Fax: +1 407 882 2819
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Abstract

A block copolymer containing P3HT and C60 is synthesized and subjected to single-molecule spectroscopy (SMS) and AFM studies to investigate the impact of the C60 on the P3HT chain conformation and the phase-separation behavior upon annealing, respectively. Both the SMS and the single-molecule polarization investigations indicate that the grafting of the C60-containing block to the P3HT moiety does not significantly change its conformational structure. AFM studies on thin films of the block copolymer indicate that they are stable with microphase separation, while blended films of the block-copolymer precursor (without C60) with PCBM undergo macroscale phase separation upon thermal annealing.

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