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Synthesis and Characterization of 9,9-diethyl-1-phenyl-1,9-dihydrofluoreno[2,3-d]imidazole-ended Fluorophores

  • Organic Materials
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Abstract

A series of π-conjugated compounds ending with 9,9-diethyl-1-phenyl-1,9-dihydrofluoreno[2,3-d]imidazole were conveniently synthesized by condensation of the key intermediate 9,9-diethyl-N2-phenyl-9H-fluorene-2,3-diamine with the corresponding symmetric aryl phthalaldehydes under very mild conditions. The structures of these compounds were confirmed by 1H NMR, 13C NMR, and HRMS. Their UV-Vis spectroscopy data, fluorescent spectroscopy data, and further details of the electronic properties from cyclic voltammetry measurements and theoretical calculations were studied. Most compounds possess good fluorescence-emitting ability with quantum yield of fluorescence values in the region of 0.36–0.92 and display emission within 449–513 nm depending on the molecular nature.

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Authors and Affiliations

  1. College of Science, Shanghai University, Shanghai, 200444, China

    Saijun Li  (李赛君), Tianqi Wang, Qitao Tan, Haixia Lin & Yongmei Cui  (崔永梅)

  2. School of Medicine, Shanghai University, Shanghai, 200444, China

    Saijun Li  (李赛君)

Authors
  1. Saijun Li  (李赛君)
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  2. Tianqi Wang
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  3. Qitao Tan
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  4. Haixia Lin
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  5. Yongmei Cui  (崔永梅)
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Corresponding author

Correspondence to Yongmei Cui  (崔永梅).

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All authors declare that there are no competing interests.

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Funded by the Natural Science Foundation of Shanghai City (No. 19ZR1419700)

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Li, S., Wang, T., Tan, Q. et al. Synthesis and Characterization of 9,9-diethyl-1-phenyl-1,9-dihydrofluoreno[2,3-d]imidazole-ended Fluorophores. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 38, 1484–1488 (2023). https://doi.org/10.1007/s11595-023-2845-7

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  • DOI: https://doi.org/10.1007/s11595-023-2845-7

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