Synthesis and linear optical spectroscopy of thioflavylium near-infrared absorbing dyes

Authors

  • Dr. Chin-Ti Chen,

    1. Molecular Materials Resource Center, The Beckman Institute California, Institute of Technology Pasadena, CA, 91125 (USA)
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  • Dr. Seth R. Marder

    Corresponding author
    1. Molecular Materials Resource Center, The Beckman Institute California, Institute of Technology Pasadena, CA, 91125 (USA)
    • Molecular Materials Resource Center, The Beckman Institute California, Institute of Technology Pasadena, CA, 91125 (USA)
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    • Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive, Pasadena, CA 91109 (USA)


  • The authors thank Dr. Sandra Gilmour for preparing compounds Ald 9, Ald 12, and Ald 13. Thanks also due to Dr. Peter Bedworth in preparing compounds Ald 10 and Ald 11. The work in this paper was performed, in part, by the Center for Space Microelectronics Technology, Jet Propulsion Laboratory (JPL), California Institute of Technology and was sponsored by the Ballistic Missile Defense Organization, Innovative Science and Technology Office. Support at the Beckman Institute from the Air Force Office of Scientific Research and the National Science Foundation is gratefully acknowledged. We thank a referee for helpful comments regarding using 1H-NMR chemical shifts to probe the electronic structure of the chromophores in this paper.

Abstract

Near-infrared adsorbing dyes have potential applications in optical recording and printing technology which employs inexpensive semiconductor lasers that emit light around 800 nm. A convenient and high yield synthesis of thioflavylium chromophores is presented, materials which are found to act as a powerful acceptor for creating such near-IR absorbing dyes.

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