Understanding energy transfer with luminescent gold nanoclusters: a promising new transduction modality for biorelated applications

Dı́az, Sebastián A.; Hastman, David A.; Medintz, Igor L.; Oh, Eunkeu

doi:10.1039/c7tb01654a

Cited by 60 publications

(47 citation statements)

References 129 publications

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“…However, if the nanoparticles become very small (a few nm), their quenching ability is lost and an autofluorescence can result, depending on the nanoparticle and the ligand shell. [ 46b,58 ]…”

Section: Optical Properties Of Bimetallic Nanoparticlesmentioning

confidence: 99%

Synthesis, Structure, Properties, and Applications of Bimetallic Nanoparticles of Noble Metals

Loza

Heggen

Epple

2020

Adv Funct Materials

326

202

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Bimetallic nanoparticles of noble metals are of high interest in imaging, biomedical devices, including nanomedicine, and heterogeneous catalysis. Synthesis, properties, characterization, biological properties, and practical applicability of nanoparticles on the basis of platinum group metals and the coin metals Ag and Au are discussed, also in comparison with the corresponding monometallic nanoparticles. In addition to the parameters that are required to characterize monometallic nanoparticles (mainly size, size distribution, shape, crystallographic nature, surface functionalization, charge), further information is required for a full characterization of bimetallic nanoparticles. This concerns the overall elemental composition of a bimetallic nanoparticle population (ratio of the two metals) and the internal distribution of the elements in individual nanoparticles (e.g., the presence of homogeneous alloys, core-shell systems, and possible intermediate stages). It is also important to ensure that all particles are identical in terms of elemental composition, that is, that the homogeneity of the particle population is given. Macroscopic properties like light absorption, antibacterial effects, and catalytic activity depend on these properties. The currently available methods for a full characterization of bimetallic nanoparticles are discussed, and future developments in this field are outlined.

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Section: Optical Properties Of Bimetallic Nanoparticlesmentioning

confidence: 99%

Synthesis, Structure, Properties, and Applications of Bimetallic Nanoparticles of Noble Metals

Loza

Heggen

Epple

2020

Adv Funct Materials

326

202

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“…The application where DNA structures still present perhaps the best near and long‐term opportunity is that of acting as a precise scaffold for placement of diverse optically active materials in order to understand their near‐ and far‐field interactions. This can extend to: fluorescent nanodiamonds, fluorescent proteins, photoactive enzymes, carbon and graphene QDs, upconversion NPs, fluorescent gold, and noble metal nanoclusters, for example 4b–d,214. Such combinations present the exciting possibility to harvest via antenna or chemically generated blue light, transfer it across the spectrum to some terminal red‐shifted acceptor and then allow it to be converted to useful energy or drive a reaction.…”

Section: Challenges and Outlookmentioning

confidence: 99%

“…Examples of new optically active materials include gold nanoparticles (AuNPs) and gold nanorods (AuNRs), which manifest unique size‐and shape dependent plasmonic resonance bands when interacting with light, and semiconductor quantum dots (QDs) which demonstrate size‐tunable quantum confined photoluminescent spectra . Other even newer materials include luminescent gold nanoclusters, nanodiamonds, and various types of carbon allotropes . Indeed, some of these materials such as QDs, for example, have already even seen preliminary commercial application with incorporation into televisions .…”

Section: Introductionmentioning

confidence: 99%

Utilizing the Organizational Power of DNA Scaffolds for New Nanophotonic Applications

Bui

Dı́az

Fontana

et al. 2019

Advanced Optical Materials

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Rapid development of DNA technology has provided a feasible route to creating nanoscale materials. DNA acts as a self‐assembled nanoscaffold capable of assuming any three‐dimensional shape. The ability to integrate dyes and new optical materials such as quantum dots and plasmonic nanoparticles precisely onto these architectures provides new ways to exploit their near‐ and far‐field interactions. A fundamental understanding of these optical processes will help drive development of next‐generation photonic nanomaterials. This review is focused on latest progress in DNA‐based photonic materials and highlights DNA scaffolds for rapidly assembling and prototyping nanoscale optical devices. Three areas are discussed including intrinsically active DNA structures displaying chiral properties, DNA scaffolds hosting plasmonic nanomaterials, and fluorophore‐labeled DNAs that engage in Förster resonance energy transfer and give rise to complex molecular photonic wires. An explanation of what is desired from these optical processes when harnessed sets the tone for what DNA scaffolds are providing toward each focus. Examples from the literature illustrate current progress along with a discussion of challenges to overcome for further improvements. Opportunities to integrate diverse classes of optically active molecules including light‐generating enzymes, fluorescent proteins, nanoclusters, and metal–chelates in new structural combinations on DNA scaffolds are also highlighted.

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“…Between them phosphines, thiols, amines, citrate anion, dendrimers, DNA, proteins etc. represent the most used capping molecules . These molecules determine robust binding to the Au NPs thus providing stability and solubility in numerous solvents, comprising water.…”

Section: Introductionmentioning

confidence: 99%

One Pot Synthesis of Au_ZnO Core‐Shell Nanoparticles Using a Zn Complex Acting as ZnO Precursor, Capping and Reducing Agent During the Formation of Au NPs

et al. 2018

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Semiconducting ZnO nanostructures show a wide band gap, a large free exciton binding energy, high electron mobility and are excellent for ultraviolet detection. Noble metals absorb visible light and produce localized surface plasmon resonance useful to enhance visible photodetection. Therefore, the coupling of gold nanoparticles and the wide-band-gap ZnO semiconductor represents the moist suited way to enhance photodetection. The Au_ZnO system has already been obtained by multiple-step syntheses that involve the selective prepara- [a]

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Understanding energy transfer with luminescent gold nanoclusters: a promising new transduction modality for biorelated applications

Abstract: AuNCs engage in energy transfer by a non-Förster process although many of the same photophysical requirements are needed.

Cited by 60 publications

References 129 publications

Synthesis, Structure, Properties, and Applications of Bimetallic Nanoparticles of Noble Metals

Synthesis, Structure, Properties, and Applications of Bimetallic Nanoparticles of Noble Metals

Utilizing the Organizational Power of DNA Scaffolds for New Nanophotonic Applications

One Pot Synthesis of Au_ZnO Core‐Shell Nanoparticles Using a Zn Complex Acting as ZnO Precursor, Capping and Reducing Agent During the Formation of Au NPs

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