Quinoline-Benzimidazole Conjugate Based Fluorescent Chemosensor: A Ratiometric Sensor for the Differentiation of Rutile and Anatase TiO2 Nanoparticles| Chapter 2 | New Innovations in Chemistry and Biochemistry Vol.7

 The quinoline-benzimidazole conjugate 1 was produced and analysed using standard spectroscopic and analytical techniques. As a possible fluorescent chemosensor, the probe is used to distinguish TiO2 anatase and rutile nanoparticles using the spectrofluorimetry technique. Probe 1 has a photoinduced electron transfer (PET) mechanism for selective TiO2 sensing and a ratiometric sensing response via an intramolecular charge transfer (ICT) mechanism for ratiometric sensing. Fluorescence titration data of TiO2 rutile and anatase phases with conjugate 1 were used to arrive at a 1:2 binding ratio, and the association constants (Ka) of 1+TiO2 anatase and 1+TiO2 rutile were calculated to be 6.34 104 M-2 and 5.179 104 M-2, respectively. Probe 1 had a detection limit of micro molar concentrations of TiO2 nanoparticles. Time and pH effects were also recorded. As a result, the probe 1 might be used on environmental and biological materials.

Author(s) Details:

K. Velmurugan,
Fluorensic Materials Laboratory, Department of Applied Chemistry, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore- 641114, India and College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211100, P.R. China.

S. Suguna,
Fluorensic Materials Laboratory, Department of Applied Chemistry, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore- 641114, India.

I. Sheebha,
Department of Applied Physics, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore- 641114, India.

C. Immanuel David,
Fluorensic Materials Laboratory, Department of Applied Chemistry, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore- 641114, India.

B. Vidhya,
Department of Applied Physics, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore- 641114, India.

J. Prabhu,
Fluorensic Materials Laboratory, Department of Applied Chemistry, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore- 641114, India.

R. Nandhakumar,
Fluorensic Materials Laboratory, Department of Applied Chemistry, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore- 641114, India.

Please see the link here: https://stm.bookpi.org/NICB-V7/article/view/5918