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First Dual Responsive "Turn-On" and "Ratiometric" AIEgen Probe for Selective Detection of Hydrazine Both in Solution and the Vapour Phase.

Deepak PurohitChandra P SharmaAshutosh RaghuvanshiAnkita JainKundan S RawatNeeraj M GuptaJagriti SinghMonika SachdevAtul Goel
Published in: Chemistry (Weinheim an der Bergstrasse, Germany) (2019)
A new dual responsive "turn-on" and "ratiometric" aggregation-induced emission luminogen (AIEgen) 3-formyl-5-(piperidin-1-yl)biphenyl-4-carbonitrile 6 a (FPBC 6 a) for selective detection of hydrazine in solution as well as in vapour phase is described. At a low concentration of 2.5 μm, the probe FPBC 6 a is non-fluorescent (turn-off) but remarkably lights up (turn-on with blue emission) in the presence of hydrazine solution (0.25-25 μm). Interestingly, at higher concentrations, the nanoaggregates of FPBC 6 a (>25 μm, 99 % HEPES in DMSO) displayed ratiometric response in the presence of hydrazine with a remarkable hypsochromic shift from the green (500-550 nm) to blue regions (440-480 nm). Furthermore, a real application of FPBC 6 a was successfully demonstrated through the detection and visualization of hydrazine in live cervical cancer cells as well as using portable test strips.
Keyphrases
  • fluorescent probe
  • living cells
  • loop mediated isothermal amplification
  • label free
  • real time pcr
  • solid state
  • cancer therapy
  • quantum dots
  • single molecule