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1 results

  • Luminogen-functionalized mesoporous SBA-15 for fluorescent detection of antibiotic cefalexin

  • Lei Liu, Xinyu Fu, Hongliang Zhang, Weiqing Ma, Lili Zhang, Yixin Zhang, Meng Liu, Kehan Liang, Senlin Hou, Aibing Chen
  • Journal:
    Journal of Materials Research / Volume 33 / Issue 10 / 28 May 2018
    Published online by Cambridge University Press:
    25 May 2018, pp. 1442-1448
    Print publication:
    28 May 2018

  • A novel luminogen-functionalized SBA-15, denoted as SNT, was developed by incorporating tris(4-bromophenyl)amine (TBPA) into SBA-15 via a “fixation-induced emission” strategy. The emission of TBPA on the matrix of SBA-15 was greatly enhanced, making the SNT possible as a fluorescence sensor. Cefalexin, a typical antibiotic, was chosen as the model analyte to be assayed and sensitive detection performance was achieved. This is the first time for cefalexin to be detected by a fluorescent method. Moreover, the SNT can be recycled by simply washing with proper solvents then used for next detection. This work provides a strategy to greatly improve the emission characteristics of fluorophores, even if a mediocre small fluorophore. It can be extended to design practical fluorescent sensors with high performance and recyclability by this strategy.