Luminescent carbon-based nanoparticles, addressed as carbon dots (CDs), were synthesized at relatively low temperature from lactose following an easy and inexpensive procedure. Modification of their surface was done by functionalization with mercaptosuccinic acid (MSA) (CDs-MSA). Transmission electron microscopy images showed regular spherical nanoparticles of 5 nm diameter. Raw and functionalized (CDs-MSA) CDs were highly fluorescent at 448 and 472 nm, with relative high quantum yield (Phi = 0.21 and 0.46 respectively). At the maximum fluorescence of CDs-MSA the intensity was quenched by addition of Ag+ ions by a static mechanism with a Stern-Volmer constant of 3.7 x 10(3) M-1. The analysis of the emission spectra showed that the CD-MSA complex was stable after this process. The quenching profiles showed that only 44% of the CD-MSA fluorophores are accessible to Ag+. The main figures of merit were detection and quantification limits of 385.8 nM and 1.2 mu M respectively, and the preci...sion as relative standard deviation was 1.76%. No interference was observed when other metal ions were present indicating a high selectivity for Ag+ detection. The results showed that CDs-MSA can be used for efficient quantification of Ag+ in silver nanoparticle dissolution.
TY - JOUR
AU - Algarra, Manuel
AU - Campos, Bruno B
AU - Radotić, Ksenija
AU - Mutavdžić, Dragosav
AU - Bandosz, Teresa
AU - Jimenez-Jimenez, Jose
AU - Rodriguez-Castellon, Enrique
AU - Esteves da Silva, Joaquim C.G.
PY - 2014
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/785
AB - Luminescent carbon-based nanoparticles, addressed as carbon dots (CDs), were synthesized at relatively low temperature from lactose following an easy and inexpensive procedure. Modification of their surface was done by functionalization with mercaptosuccinic acid (MSA) (CDs-MSA). Transmission electron microscopy images showed regular spherical nanoparticles of 5 nm diameter. Raw and functionalized (CDs-MSA) CDs were highly fluorescent at 448 and 472 nm, with relative high quantum yield (Phi = 0.21 and 0.46 respectively). At the maximum fluorescence of CDs-MSA the intensity was quenched by addition of Ag+ ions by a static mechanism with a Stern-Volmer constant of 3.7 x 10(3) M-1. The analysis of the emission spectra showed that the CD-MSA complex was stable after this process. The quenching profiles showed that only 44% of the CD-MSA fluorophores are accessible to Ag+. The main figures of merit were detection and quantification limits of 385.8 nM and 1.2 mu M respectively, and the precision as relative standard deviation was 1.76%. No interference was observed when other metal ions were present indicating a high selectivity for Ag+ detection. The results showed that CDs-MSA can be used for efficient quantification of Ag+ in silver nanoparticle dissolution.
PB - Royal Soc Chemistry, Cambridge
T2 - Journal of Materials Chemistry A
T1 - Luminescent carbon nanoparticles: effects of chemical functionalization, and evaluation of Ag+ sensing properties
EP - 8351
IS - 22
SP - 8342
VL - 2
DO - 10.1039/c4ta00264d
ER -
@article{
author = "Algarra, Manuel and Campos, Bruno B and Radotić, Ksenija and Mutavdžić, Dragosav and Bandosz, Teresa and Jimenez-Jimenez, Jose and Rodriguez-Castellon, Enrique and Esteves da Silva, Joaquim C.G.",
year = "2014",
abstract = "Luminescent carbon-based nanoparticles, addressed as carbon dots (CDs), were synthesized at relatively low temperature from lactose following an easy and inexpensive procedure. Modification of their surface was done by functionalization with mercaptosuccinic acid (MSA) (CDs-MSA). Transmission electron microscopy images showed regular spherical nanoparticles of 5 nm diameter. Raw and functionalized (CDs-MSA) CDs were highly fluorescent at 448 and 472 nm, with relative high quantum yield (Phi = 0.21 and 0.46 respectively). At the maximum fluorescence of CDs-MSA the intensity was quenched by addition of Ag+ ions by a static mechanism with a Stern-Volmer constant of 3.7 x 10(3) M-1. The analysis of the emission spectra showed that the CD-MSA complex was stable after this process. The quenching profiles showed that only 44% of the CD-MSA fluorophores are accessible to Ag+. The main figures of merit were detection and quantification limits of 385.8 nM and 1.2 mu M respectively, and the precision as relative standard deviation was 1.76%. No interference was observed when other metal ions were present indicating a high selectivity for Ag+ detection. The results showed that CDs-MSA can be used for efficient quantification of Ag+ in silver nanoparticle dissolution.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Journal of Materials Chemistry A",
title = "Luminescent carbon nanoparticles: effects of chemical functionalization, and evaluation of Ag+ sensing properties",
pages = "8351-8342",
number = "22",
volume = "2",
doi = "10.1039/c4ta00264d"
}
Algarra, M., Campos, B. B., Radotić, K., Mutavdžić, D., Bandosz, T., Jimenez-Jimenez, J., Rodriguez-Castellon, E.,& Esteves da Silva, J. C.G.. (2014). Luminescent carbon nanoparticles: effects of chemical functionalization, and evaluation of Ag+ sensing properties. in Journal of Materials Chemistry A
Royal Soc Chemistry, Cambridge., 2(22), 8342-8351.
https://doi.org/10.1039/c4ta00264d
Algarra M, Campos BB, Radotić K, Mutavdžić D, Bandosz T, Jimenez-Jimenez J, Rodriguez-Castellon E, Esteves da Silva JC. Luminescent carbon nanoparticles: effects of chemical functionalization, and evaluation of Ag+ sensing properties. in Journal of Materials Chemistry A. 2014;2(22):8342-8351.
doi:10.1039/c4ta00264d .
Algarra, Manuel, Campos, Bruno B, Radotić, Ksenija, Mutavdžić, Dragosav, Bandosz, Teresa, Jimenez-Jimenez, Jose, Rodriguez-Castellon, Enrique, Esteves da Silva, Joaquim C.G., "Luminescent carbon nanoparticles: effects of chemical functionalization, and evaluation of Ag+ sensing properties" in Journal of Materials Chemistry A, 2, no. 22 (2014):8342-8351,
https://doi.org/10.1039/c4ta00264d . .
