Exceptional Blueshifted and Enhanced Aggregation-Induced Emission of Conjugated Asymmetric Triazines and Their Applications in Superamplified Detection of Explosives

Authors

  • Zhong-Fu An,

    1. Key Laboratory for Organic Electronics & Information, Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046 (P.R. China), Fax: (+86) 25-8586-6999
    Search for more papers by this author
  • Chao Zheng,

    1. Key Laboratory for Organic Electronics & Information, Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046 (P.R. China), Fax: (+86) 25-8586-6999
    Search for more papers by this author
  • Dr. Run-Feng Chen,

    Corresponding author
    1. Key Laboratory for Organic Electronics & Information, Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046 (P.R. China), Fax: (+86) 25-8586-6999
    • Key Laboratory for Organic Electronics & Information, Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046 (P.R. China), Fax: (+86) 25-8586-6999
    Search for more papers by this author
  • Jun Yin,

    1. Key Laboratory for Organic Electronics & Information, Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046 (P.R. China), Fax: (+86) 25-8586-6999
    Search for more papers by this author
  • Jian-Jian Xiao,

    1. Key Laboratory for Organic Electronics & Information, Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046 (P.R. China), Fax: (+86) 25-8586-6999
    Search for more papers by this author
  • Hui-Fang Shi,

    1. Key Laboratory for Organic Electronics & Information, Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046 (P.R. China), Fax: (+86) 25-8586-6999
    Search for more papers by this author
  • Ye Tao,

    1. Key Laboratory for Organic Electronics & Information, Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046 (P.R. China), Fax: (+86) 25-8586-6999
    Search for more papers by this author
  • Dr. Yan Qian,

    1. Key Laboratory for Organic Electronics & Information, Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046 (P.R. China), Fax: (+86) 25-8586-6999
    Search for more papers by this author
  • Prof. Wei Huang

    Corresponding author
    1. Key Laboratory for Organic Electronics & Information, Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046 (P.R. China), Fax: (+86) 25-8586-6999
    • Key Laboratory for Organic Electronics & Information, Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210046 (P.R. China), Fax: (+86) 25-8586-6999
    Search for more papers by this author

Abstract

A novel conjugated asymmetric donor–acceptor (CADA) strategy for preventing the redshift in photoluminescence, as well as preserving the merits of donor–acceptor architectures, was proposed and demonstrated for two triazine derivatives, which showed highly efficient, narrow, and blueshifted ultraviolet light emission in solid films along with special aggregation-induced emission behavior. A mechanism of aggregation-induced locally excited-state emission by suppressing the twisted intramolecular charge-transfer emission for the spectacular optoelectronic phenomena of these CADA molecules was suggested on the basis of both experimental measurements and theoretical calculations. By taking advantage of this special CADA architecture, fluorescent probes based on aggregates of conjugated asymmetric triazines in THF/water for the detection of explosives show superamplified detection of picric acid with high quenching constants (>1.0×107M−1) and a low detection limit of 15 ppb.

Ancillary