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https://hdl.handle.net/2440/117745
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Type: | Journal article |
Title: | Nitric oxide optical fiber sensor based on exposed core fibers and CdTe/CdS quantum dots |
Author: | Ding, L. Ruan, Y. Li, T. Huang, J. Warren-Smith, S. Ebendorff-Heidepriem, H. Monro, T. |
Citation: | Sensors and Actuators B: Chemical: international journal devoted to research and development of physical and chemical transducers, 2018; 273:9-17 |
Publisher: | Elsevier |
Issue Date: | 2018 |
ISSN: | 0925-4005 0925-4005 |
Statement of Responsibility: | Liyun Ding, Yinlan Ruan, Tao Li, Jun Huang, Stephen C. Warren-Smith, Heike Ebendorff-Heidepriem, Tanya M. Monro |
Abstract: | Nitric oxide plays a crucial role as a messenger in biological systems, but limitations in measurement are restricted due to its relatively low concentration and short half-life time. Here we report a novel approach to sensing nitric oxide by using an exposed core fiber with its core coated with CdTe/CdS core/shell quantum dots. This enables rapid detection and opens up the possibility of monitoring its production within biological systems. The detection mechanism is based on fluorescence quenching of CdTe/CdS quantum dots by nitric oxide, which can coordinate with Cd²⁺ directly as a ligand forming transition metal complexes. We demonstrate that CdTe/CdS quantum dots functionlization exposed core optical fibers can respond rapidly to nitric oxide in physiological environments with picomolar sensitivity. |
Keywords: | Nitric oxide sensing; exposed core optical fiber; CdTe/CdS core/shell quantum dots; picomolar sensitivity |
Rights: | © 2018 Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.snb.2018.06.012 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1016/j.snb.2018.06.012 |
Appears in Collections: | Aurora harvest 3 IPAS publications |
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