Silver nanomaterials for the detection of chemical and biological targets

Lee, Jae Seung

doi:10.1515/ntrev-2014-0017

Cited by 5 publications

(3 citation statements)

References 115 publications

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“…All non-hydrogen atoms were anisotropically refined, and in the last cycles of refinement a weighting scheme was used, where weights are calculated from the following formula: w = 1/[σ 2 (F o 2 ) + (aP) 2 + bP], where P = (F o 2 + 2F c 2 )/3. Drawings of molecules were performed with the program ORTEP32 45 with 30% probability displacement ellipsoids for nonhydrogen atoms.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…Silver nanoparticles (AgNPs) are employed as biomedical agents, 1 they exhibit optical properties due to a strong localized surface plasmon resonance (LSPR) that can expand from the visible to the nearinfrared (NIR) range. 2,3 They find also applications in catalysis or bio-catalysis reactions. [4][5][6] Unpredicted properties can arise at the bottom range of the nanoscale.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, a cohort of new and exciting physical and chemical properties have emerged for Ag cores, when they are confined under the form of small-size nanoparticles, exhibiting a high surface to volume ratio. Silver nanoparticles (AgNPs) are employed as biomedical agents; they exhibit optical properties due to a strong localized surface plasmon resonance (LSPR) that can expand from the visible to the near-infrared (NIR) range. , They find also applications in catalysis or biocatalysis reactions. − Unpredicted properties can arise at the bottom range of the nanoscale. For example, coinage Ag atoms of AgNPs of 1–3 nm size exhibit red or NIR photoluminescence properties …”

Section: Introductionmentioning

confidence: 99%

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Topological Analysis of Ag–Ag and Ag–N Interactions in Silver Amidinate Precursor Complexes of Silver Nanoparticles

et al. 2020

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A series of silver-amidinate complexes is studied both experimentally and theoretically, in order to investigate the role of the precursor complex in the control of the synthesis of silver nanoparticles via an organometallic route. The replacement of the methyl substituent of the central carbon atom of the amidinate anion by a n-butyl group, allows for the crystallization of a tetranuclear silver-amidinate complex 3 instead of a mixture of di-and trinuclear silver-amidinate complexes 1 and 2, as obtained with a methyl substituent. The relative stabilities and dissociation schemes of various isomeric arrangements of silver atoms in 3 are investigated at the computational DFT level of calculation, depending on the substituents of the amidinate ligand. A tetranuclear silver-amidinate complex 4, exhibiting a diamond-like arrangement of the four silver atoms is also considered. Ag-N bonds and argentophilic Ag-Ag interactions are finely characterized using ELF and QTAIM topological analyses, and compared over the series of the related di, tri and tetranuclear silver-amidinate complexes 1-4. In contrast to the Ag-N dative bonds very similar over the series, argentophilic Ag-Ag interactions of various strengths and covalence degree are characterized for complexes 1-4. This gives insight into the role of the amidinate substituents on the nuclearity and intramolecular chemical bonding of the silver-amidinate precursors, required for the synthesis of dedicated AgNPs with chemically well-defined surfaces.

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Section: ■ Experimental Sectionmentioning

confidence: 99%