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Interaction between chlorophyll and silver nanoparticles: A close analysis of chlorophyll fluorescence quenching

Falco, WF and Queiroz, AM and Fernandes, J and Botero, ER and Falcão, EA and Guimarães, FEG and M'Peko, JC and Oliveira, SL and Colbeck, I and Caires, ARL (2014) 'Interaction between chlorophyll and silver nanoparticles: A close analysis of chlorophyll fluorescence quenching.' Journal of Photochemistry and Photobiology A: Chemistry, 299. 203 - 209. ISSN 1010-6030

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Silver nanoparticles (Ag NPs) are among the most widely produced and used nanomaterial due to their antimicrobial and antibacterial properties, allowing a wide range of commercial applications. Thereby, the increasing use of Ag NPs should inevitably lead to the release and accumulation of these NPs into the environment, resulting in adverse effects on plants, animals and humans. Chlorophyll fluorescence (ChlF) has been proposed as a non-destructive and accurate tool for detecting the impacts of environmental stress on plants. Little is known about the photophysical behavior of plants when exposed to a metallic NPs-containing environment. The present study evaluated the interaction between chlorophyll (Chl) and Ag NPs, over a wide range of nanoparticle concentrations (from 0 μM to 200.0 μM), by monitoring the ChlF. The results reveal that the ChlF is quenched in the presence of Ag NPs, as a result of the static and dynamic quenching processes. The present results suggest that ChlF has a great potential to be used in the future as an analytical tool for monitoring the interaction of plants and NPs as well as investigating the effects of NPs on plants.

Item Type: Article
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Faculty of Science and Health > Life Sciences, School of
Depositing User: Jim Jamieson
Date Deposited: 09 Feb 2015 17:00
Last Modified: 30 Mar 2021 19:15

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