Polymeric ladderphanes

Chih Ming Chou, Shern Long Lee, Chih Hsien Chen, Akkattu Thankappan Biju, Hsian Wen Wang, Yi Lin Wu, Guo Fu Zhang, Kuang Wei Yang, Tsong Shin Lim, Min Jie Huang, Po Yu Tsai, Kin Chuan Lin, Shou Ling Huang, Chun Hsien Chen, Tien Yau Luh

    Research output: Contribution to journalArticlepeer-review

    68 Scopus citations


    A new class of polymers, which have a double-stranded polybinorbornene skeleton with multilayer planar oligoaryl linkers, defined as polymeric ladderphanes, are synthesized. The structures of these ladderphanes are determined by spectroscopic means. Photophysical studies and time-resolved fluorescence spectroscopic investigations reveal that there is a strong interaction between the chromophore linkers. Thus, Soret band splitting in the absorption spectrum of the polymer with porphyrin linker (12e), significant fluorescence quenching with oligoaryl linkers (12b-d), and excimer emission with a terphenylene-diethynylene linker (12a) are characteristic photophysical properties of these polymers. Scanning tunneling microscopy shows that polymers 12b and d exhibit a ladder-like morphology and form a supramolecular assembly leading to a two-dimensional ordered array on a highly oriented pyrolytic graphite surface.

    Original languageEnglish (US)
    Pages (from-to)12579-12585
    Number of pages7
    JournalJournal of the American Chemical Society
    Issue number35
    StatePublished - Sep 9 2009

    ASJC Scopus subject areas

    • Catalysis
    • Chemistry(all)
    • Biochemistry
    • Colloid and Surface Chemistry


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