Chrysotype: Photography in nanoparticle gold

Ware, Mike

doi:10.1007/bf03215540

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…Although photoreduction in a cell may in fact be simple, the exact pathway may be complicated to unravel. However, recently, a two-step photoreduction process was recently developed for photographic printing in gold 33 . Gold ion photoreduction played an important role as one of the most promising early techniques in photography, and in a collagen matrix, pure gold ion solution could be photoreduced to form images, given sufficient irradiation.…”

Section: Nature Communications | Doi: 101038/ncomms6144mentioning

confidence: 99%

“…However, the technique was too insensitive and was instead used as a later 'toning' step after irradiation of other photoreducable agents. Later, the use of simultaneous additional agents, notably iron (III)-based salts of citric, tartaric or oxalic acid 33 allowed the light-induced photoreduction of the additional ion to give high sensitivity, and in turn trigger the reduction of the gold ions in the same solution. The resulting multiple path reduction process depends on the concentration and type of additional ions present.…”

Section: Nature Communications | Doi: 101038/ncomms6144mentioning

confidence: 99%

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Laser-targeted photofabrication of gold nanoparticles inside cells

et al. 2014

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Nanoparticle manipulation is of increasing interest, since they can report single moleculelevel measurements of the cellular environment. Until now, however, intracellular nanoparticle locations have been essentially uncontrollable. Here we show that by infusing a gold ion solution, focused laser light-induced photoreduction allows in situ fabrication of gold nanoparticles at precise locations. The resulting particles are pure gold nanocrystals, distributed throughout the laser focus at sizes ranging from 2 to 20 nm, and remain in place even after removing the gold solution. We demonstrate the spatial control by scanning a laser beam to write characters in gold inside a cell. Plasmonically enhanced molecular signals could be detected from nanoparticles, allowing their use as nano-chemical probes at targeted locations inside the cell, with intracellular molecular feedback. Such light-based control of the intracellular particle generation reaction also offers avenues for in situ plasmonic device creation in organic targets, and may eventually link optical and electron microscopy.

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Section: Nature Communications | Doi: 101038/ncomms6144mentioning

confidence: 99%

Section: Nature Communications | Doi: 101038/ncomms6144mentioning

confidence: 99%

Laser-targeted photofabrication of gold nanoparticles inside cells

et al. 2014

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“…, the printing of photographs in pure gold. 34 The equation involved in this galvanic replacement reaction can be summarized as follows:…”

Section: Resultsmentioning

confidence: 99%

“…In fact, this gold complex has been applied for 'chrysotype' since the 1840s, i.e., the printing of photographs in pure gold. 34 The equation involved in this galvanic replacement reaction can be summarized as follows:…”

Section: Nanoscale Papermentioning

confidence: 99%

Direct synthesis of Au–Ag nanoframes by galvanic replacement via a continuous concaving process

Cheng

Zhang

et al. 2022

Nanoscale

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Surfactantless Synthesis of Silver Nanoplates and Their Application in SERS

Sun

Wiederrecht

2007

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150

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Silver nanoplates with thicknesses of 50-70 nm and edge lengths ranging from 200 nm to 1 mum have been grown on semiconductor wafers at room temperature through a simple galvanic reaction between an aqueous solution of AgNO(3) and n-type GaAs. The as-grown Ag structures have chemically clean surfaces due to no surfactant or coordinating molecules being involved in the synthesis. Electron microscopy characterizations indicate that each Ag plate has rough surfaces and a half-moon morphology with one straight edge and one arclike edge. Systematic studies on varying reaction conditions reveal that the oxide (i.e., Ga(2)O(3) and As(2)O(3)) layers of GaAs, generated in situ in the reactions, play an important role in assisting the growth of anisotropic nanoplates. The cleanliness of the surfaces of the Ag nanoplates is beneficial to attachment of interesting molecules on their surfaces for various applications, such as plasmonic-enhanced photophysical and photochemical processes and surface-enhanced spectroscopies.

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Chrysotype: Photography in nanoparticle gold

Cited by 8 publications

References 21 publications

Laser-targeted photofabrication of gold nanoparticles inside cells

Laser-targeted photofabrication of gold nanoparticles inside cells

Direct synthesis of Au–Ag nanoframes by galvanic replacement via a continuous concaving process

Surfactantless Synthesis of Silver Nanoplates and Their Application in SERS

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