Journal article
Nanoarchitectonics of Congo red dye to biocompatible fluorescent carbon dots for highly sensitive Fe3 and ferritin detection
A Kathiravan, S Thulasi, TA Smith, M Ashokkumar, M Asha Jhonsi
Analyst | ROYAL SOC CHEMISTRY | Published : 2023
DOI: 10.1039/d2an01674e
Abstract
In this work, we have meticulously tuned the carcinogenic Congo red dye to environmentally benign fluorescent carbon dots (CDs) by adopting a typical hydrothermal method without any additives. The as-synthesized CDs were extremely water soluble, exhibited an excitation wavelength independent emission with a high fluorescence quantum yield (46%) and were biocompatible. The microscopy results revealed that the CDs were quasi-spherical with a particle diameter of ∼5 nm. The structure and functional groups of the CDs were comprehensively investigated using Fourier-transform infrared, X-ray photoelectron and Raman spectroscopy analyses. These studies show that the CDs were intrinsically functiona..
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Awarded by Institute of Science and Technology Austria
Funding Acknowledgements
A. K. thanks the SERB Research Scientists scheme (SB/SRS/2018-2019-05/CS, dated: 30/01/2019). A. K. would like to express gratitude to Vel Tech Rangarajan Dr Sagunthala R & D Institute of Science and Technology for funding the analytical characterization charges. A. K. also thanks the sophisticated analytical instruments facility (SAIF), Indian Institute of Technology, Chennai, for the fluorescence lifetime measurements. MAJ thanks the BSACIST for providing the seed grant (ref. no. CSD/CSM/2022/08, dated: 14/07/2022) for conducting independent research. TAS acknowledges the support from the ARC Centre of Excellence in Exciton Science (CE170100026).