Luminescent carbon nanoparticles: effects of chemical functionalization, and evaluation of Ag+ sensing properties
Само за регистроване кориснике
2014
Аутори
Algarra, ManuelCampos, Bruno B
Radotić, Ksenija
Mutavdžić, Dragosav
Bandosz, Teresa
Jimenez-Jimenez, Jose
Rodriguez-Castellon, Enrique
Esteves da Silva, Joaquim C.G.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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.
Кључне речи:
carbon dots / mercaprosuccinic acid / fluorescence / quantum yield / Ag detectionИзвор:
Journal of Materials Chemistry A, 2014, 2, 22, 8342-8351Издавач:
- Royal Soc Chemistry, Cambridge
Финансирање / пројекти:
- Andalucia Tech program
- Испитивања односа структура-функција у ћелијском зиду биљака и измене структуре зида ензимским инжењерингом (RS-MESTD-Basic Research (BR or ON)-173017)
DOI: 10.1039/c4ta00264d
ISSN: 2050-7488
WoS: 000336848000026
Scopus: 2-s2.0-84900790381
Институција/група
Institut za multidisciplinarna istraživanjaTY - 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 . .