Rapid Induced Aggregation of Gold Nanoparticles by Diolefinic Dyes

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dc.contributor.author Abo-Alhasan, Ahmed A
dc.contributor.author El-Daly, Samy A
dc.contributor.author El- Hendawy, Morad M
dc.contributor.author El-Khalfy, Shahar H
dc.contributor.author Ebeid, El-Zeiny M
dc.date.accessioned 2017-09-25T09:38:03Z
dc.date.available 2017-09-25T09:38:03Z
dc.date.issued 2014
dc.identifier.citation Abo-Alhasan, A. A., El-Daly, S. A., El- Hendawy, M. M., El-Khalfy, S. H., & Ebeid, E. M. (2014). Rapid Induced Aggregation of Gold Nanoparticles by Diolefinic Dyes. Journal of Nanomaterials & Molecular Nanotechnology, 3(2).
dc.identifier.uri http://dspace.must.edu.eg/handle/123456789/487
dc.description.abstract Aggregation kinetics of gold nanoparticles (Au NPs) interaction in the presence of some diolefinic dyes, namely 1,4-bis (β-pyridyl-2-vinyl) benzene (P2VB), 1,4 bis(2-methylstyryl) benzene (MSB) and 2,5 distyrylpyrazine (DSP), were studied in methanol using steady state UV-Vis spectrophotometry and stopped-flow spectrophotometry. All three dyes induced the aggregation of Au NPs, but with different rates. The rate of interaction of P2VB and MSB with Au NPs were in time-scale of milliseconds, 6 ms-1 and 3.25 ms-1, respectively, while the interaction between DSP and Au NPs occurred in time-scale of minutes. The rates of interaction between Au NPs and these dyes go in the order of P2VB > MSB » DSP. The density functional theory (CAM-B3LYP) predicted that the dye with higher group charge on the terminal moieties possess higher affinity toward the aggregation as it strengthen its electrostatic interactions with the citrate-capped Au NPs. en_US
dc.language.iso en en_US
dc.publisher SciTechnol en_US
dc.relation.ispartofseries Journal of Nanomaterials & Molecular Nanotechnology;3:2
dc.subject Gold nanoparticles en_US
dc.subject Dye – induced aggregation en_US
dc.subject Fast kinetic measurements en_US
dc.subject Diolefinic dyes en_US
dc.subject DFT en_US
dc.title Rapid Induced Aggregation of Gold Nanoparticles by Diolefinic Dyes en_US
dc.type Article en_US


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