Click-generated triazole based ferrocene-carbohydrate bioconjugates: A highly selective multisignalling probe for Cu(II) ions
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  • 作者:Arunabha Thakur (1)
    Sinjinee Sardar (1)
    Sundargopal Ghosh (1)
  • 关键词:Organometallic bioconjugates ; Cu(II) cation sensor ; chromogenic and electrochemical chemosensor
  • 刊名:Journal of Chemical Sciences
  • 出版年:2012
  • 出版时间:November 2012
  • 年:2012
  • 卷:124
  • 期:6
  • 页码:1255-1260
  • 全文大小:462KB
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  • 作者单位:Arunabha Thakur (1)
    Sinjinee Sardar (1)
    Sundargopal Ghosh (1)

    1. Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036, India
  • ISSN:0973-7103
文摘
Two Cu2+-specific colorimetric sensors, based on ferrocene-carbohydrate bioconjugates, 2, C46H56O20N6Fe and 3, C28H33O10N3Fe were designed and synthesized in good yields. Both the compounds, 2 and 3, behave as very selective and sensitive chromogenic and electrochemical chemosensor for Cu2+ ion in aqueous environment (CH3CN/H2O (2:8, v/v). The analytical detection limit (ADL) for receptor 2 was 7.5 × 10??M. The considerable changes in their absorption spectra of 2 and 3 are accompanied by the appearance of a new low energy (LE) peak at 630?nm (2: ε = 1600?M??cm? and 3: 822?M??cm?). This is further accompanied by a strong colour change from yellow to dark green that allows the prospective for ‘naked eye-detection of Cu2+ ion. Graphical Abstract The Cu2+-specific colorimetric sensors 2, C46H56O20N6Fe and 3, C28H33O10N3Fe based on ferrocene-carbohydrate bioconjugates, were designed and synthesized in good yields. Both the compounds 2 and 3 behave as selective chromogenic and electrochemical chemosensor for Cu2+ ion in aqueous environment.

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