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Sivasankaran U, Cyriac ST, Menon S, et al. Fluorescence Turn off Sensor for Brilliant Blue FCF- an Approach Based on Inner Filter Effect. J Fluoresc. 2016;27(1):69-77doi: 10.1007/s10895-016-1935-8.
Sivasankaran, U., Cyriac, S. T., Menon, S., & Kumar, K. G. (2017). Fluorescence Turn off Sensor for Brilliant Blue FCF- an Approach Based on Inner Filter Effect. Journal of fluorescence, 27(1), 69-77. https://doi.org/10.1007/s10895-016-1935-8
Sivasankaran, Unni, et al. "Fluorescence Turn off Sensor for Brilliant Blue FCF- an Approach Based on Inner Filter Effect." Journal of fluorescence vol. 27,1 (2017): 69-77. doi: https://doi.org/10.1007/s10895-016-1935-8
Sivasankaran U, Cyriac ST, Menon S, Kumar KG. Fluorescence Turn off Sensor for Brilliant Blue FCF- an Approach Based on Inner Filter Effect. J Fluoresc. 2017 Jan;27(1):69-77. doi: 10.1007/s10895-016-1935-8. Epub 2016 Sep 18. PMID: 27639570.
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J Fluoresc. 2017 Jan;27(1):69-77. doi: 10.1007/s10895-016-1935-8. Epub 2016 Sep 18.

Fluorescence Turn off Sensor for Brilliant Blue FCF- an Approach Based on Inner Filter Effect.

Journal of fluorescence

Unni Sivasankaran, Soumya T Cyriac, Shalini Menon, Krishnapillai Girish Kumar

Affiliations

  1. Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, 22, India.
  2. Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, 22, India. [email protected].

PMID: 27639570 DOI: 10.1007/s10895-016-1935-8

Abstract

A nanosensor with fluorometric readout based on L-cysteine capped cadmium sulphide quantum dots for discriminative detection and determination of Brilliant blue FCF (BB) (in 0.5 M Tris buffer solution of pH 9.5) over other synthetic food colourants is developed. Mechanism of the nanosensor is based on inner filter effect (IFE). The addition of BB into quantum dot solution might induce the quenching of fluorescence. The nanosensor described in this report reveals its simplicity and flexibility due to less laborious and more cost-effective synthesis. The developed fluorescence sensor showed excellent selectivity towards BB, and allows the detection as low as 3.50 × 10

Keywords: Brilliant blue; Fluorescence; Inner filter effect; Quantum dots; Quenching; Sensor

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