Article

Journal of Chemical Sciences

, Volume 115, Issue 5, pp 703-709

Ciprofloxacin@SiO2: Fluorescent nanobubbles

  • M. J. RosemaryAffiliated withDepartment of Chemistry, Indian Institute of Technology MadrasRegional Sophisticated Instrumentation Centre, Indian Institute of Technology Madras
  • , V. SuryanarayananAffiliated withDepartment of Chemistry, Indian Institute of Technology MadrasRegional Sophisticated Instrumentation Centre, Indian Institute of Technology Madras
  • , P. GanapatireddyAffiliated withDepartment of Chemistry, Indian Institute of Technology Madras
  • , Ian MaclarenAffiliated withDarmstadt University of Technology, Institute for Materials Science
  • , S. BaskaranAffiliated withDepartment of Chemistry, Indian Institute of Technology Madras
  • , T PradeepAffiliated withDepartment of Chemistry, Indian Institute of Technology MadrasRegional Sophisticated Instrumentation Centre, Indian Institute of Technology Madras Email author 

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Abstract

We report a new nanomaterial in which ciprofloxacin molecules are incorporated inside silica nanobubbles, denoted as ciprofloxacin@SiO2. The material has been characterised using UV/Vis absorption spectroscopy, transmission electron microscopy, cyclic voltammetry, and emission spectroscopy. The material is stable and the freestanding particles can be precipitated and redispersed in several solvents. Confinement of the molecule is complete as leaching through the shell is minimal. The material behaves like free ciprofloxacin in solution; however, effects of confinement are manifested. Energy transfer reaction between ciprofloxacin@SiO2 and Tb3+ was monitored by emission spectroscopy. The emission intensity decreased with metal ion exposure indicating selective electronic interaction.

Keywords

Ciprofloxacin SiO2 nanobubble Tb3+ fluorescence