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Synthesis, characterization, photophysical and oxygen-sensing properties of a copper(I) complex

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Abstract

In this paper, we report the synthesis, crystal structure, photophysical properties, and electronic nature of a phosphorescent Cu(I) complex of [Cu(TBT)(POP)]BF4, where TBT and POP stand for 4,5,9,14-tetraaza-benzo[b]triphenylene and bis(2-(diphenylphosphanyl)phenyl) ether, respectively. [Cu(TBT)(POP)]BF4 renders a red phosphorescence peaking at 622 nm, with a long excited-state lifetime of 13.2 μs. Density functional calculation reveals that the emission comes from a triplet metal-to-ligand-charge-transfer excited state. We electrospun composite nanofibers of [Cu(TBT)(POP)]BF4 and polystyrene, hoping to explore the possibility of replacing precious-metal-based oxygen sensors with cheap Cu-based ones. The finally obtained samples with average diameter of ~700 nm exhibit a maximum sensitivity of 5.8 toward molecular oxygen with short response/recovery time (5/13 s) due to the large surface-area-to-volume ratio of nanofibrous membranes. No photobleaching is detected in these samples. All these results suggest that phosphorescent Cu(I) complexes doped nanofibrous membranes are promising candidates for low-cost and quick-response oxygen-sensing materials.

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Acknowledgments

The authors gratefully thank the financial and experimental supports from Beijing Institute of Genomics, Chinese Academy of Sciences.

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Authors and Affiliations

  1. Beijing Institute of Genomics, Chinese Academy of Sciences, No. 7 Beitucheng West Road, Chaoyang District, 100029, Beijing, People’s Republic of China

    Chuanqi Zhou

  2. School of Life Science and Technology, Changchun University of Science and Technology, 7089 Weixing Road, Changchun, 130022, Jilin, People’s Republic of China

    Qingshuang Wang

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  1. Chuanqi Zhou
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  2. Qingshuang Wang
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Correspondence to Chuanqi Zhou.

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Zhou, C., Wang, Q. Synthesis, characterization, photophysical and oxygen-sensing properties of a copper(I) complex. Transition Met Chem 35, 605–611 (2010). https://doi.org/10.1007/s11243-010-9370-1

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  • DOI: https://doi.org/10.1007/s11243-010-9370-1

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