Nucleotide-Based Assemblies for Green Synthesis of Silver Nanoparticles with Controlled Localized Surface Plasmon Resonances and Their Applications

Pu, Fang; Huang, Yanyan; Yang, Zhiguang; Qiu, H.; Ren, Jinsong

doi:10.1021/acsami.7b18915

Cited by 30 publications

(16 citation statements)

References 51 publications

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“…The Ag3d core spectra consisted of two components, Ag3d 5/2 and Ag 3d 3/2 , with binding energies of 368.1 and 374.2 eV, respectively. The Ag3d doublet was split by 6.1 eV, in agreement with the metallic silver and literature values [18,19]. As shown in Figure 1d, the C1s core spectra of the AgNPs had a single dominant peak with a binding energy of 284.5 eV, which is attributed to carbon atoms of phenyl rings.…”

Section: High-resolution Transmission Electron Microscopy (Hr-tem) Ansupporting

confidence: 87%

Chlortetracycline-Functionalized Silver Nanoparticles as a Colorimetric Probe for Aminoglycosides: Ultrasensitive Determination of Kanamycin and Streptomycin

Saratale

Ghodake

et al. 2020

Nanomaterials

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Aminoglycosides (AMGs) have been extensively used to treat infectious diseases caused by Gram-negative bacteria in livestock and humans. A selective and sensitive colorimetric probe for the determination of streptomycin and kanamycin was proposed based on chlortetracycline-coated silver nanoparticles (AgNPs–CTC) as the sensing element. Almost all of the tested aminoglycoside antibiotics can rapidly induce the aggregation of AgNPs, along with a color change from yellow to orange/red. The selective detection of aminoglycoside antibiotics, including tobramycin, streptomycin, amikacin, gentamicin, neomycin, and kanamycin, with other types of antibiotics, can be achieved by ultraviolet (UV) spectroscopy. This developed colorimetric assay has ability to detect various AMGs using in-depth surface plasmon resonance (SPR) studies. With this determination of streptomycin and kanamycin was achieved at the picomolar level (pM) by using a UV–visible spectrophotometer. Under aqueous conditions, the linear range of the colorimetric sensor for streptomycin and kanamycin was 1000–1,1000 and 120–480 pM, respectively. The corresponding limit of detection was 2000 pM and 120 pM, respectively. Thus, the validated dual colorimetric and ratiometric method can find various analytical applications for the ultrasensitive and rapid detection of AMG antibiotics in water samples.

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Section: High-resolution Transmission Electron Microscopy (Hr-tem) Ansupporting

confidence: 87%

Chlortetracycline-Functionalized Silver Nanoparticles as a Colorimetric Probe for Aminoglycosides: Ultrasensitive Determination of Kanamycin and Streptomycin

Saratale

Ghodake

et al. 2020

Nanomaterials

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“…In plasmonic nanostructures the electromagnetic field is not evenly arranged but located spatially in constricted regions called as hotspots, it plays a vital role in enhancing the Raman signals of analyte molecule by increasing the EF [58]. The hotspots are mostly located at the edges and corners of the NMs.…”

Section: Role Of Hotspot In Sersmentioning

confidence: 99%

Bio-Mediated Synthesis of Metal Nanomaterials for SERS Application

Kundu

Kumaravel

2021

Materials Research Foundations

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The discovery of nanomaterials (NMs) caused a great revolution in the field of science especially in material science. The highly exotic and tunable size and shape of NMs have devoted more interest due to their unique physiochemical properties. There are various methods and methodologies involved to prepare NMs in a desired morphology. Among these, the fabrication of bio-molecules mediated NMs are highly attractive because their size and shape can be easily tuned by simple, eco-friendly and reliable way. Deoxyribonucleic acid (DNA) is considered to be one of the most promising and well-studied bio-molecule in the fabrication of various types of NMs. The rich functionalities with the double-helix structure of DNA facilitate to accommodate a higher number of metal ions on its surface and results in perfect chain-like nano-assemblies. Moreover, the DNA mediated NMs can be highly useful for the Surface Enhanced Raman Scattering (SERS) studies with appropriate analytes. The SERS technique provides the fingerprint information of the analyte molecules even at very low concentration (such as even in ppm levels). The SERS intensity is greatly influenced by the size and shape of the NMs prepared using DNA scaffolds due to their assembly in a close proximity and generation of higher number of ‘hot spots’. In this present book chapter, we elaborated the numerous methodologies involved for the synthesis of DNA-based NMs considering their size, shapes, and also highlighted the possible mechanism involved for their growth with DNA scaffolds. In-addition, the possible application of DNA mediated NMs towards SERS studies has also been detailed in this book chapter.

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“…It is a surface sensitive technique when the analyte molecules adsorb over the rough metal surface such as Au, Ag and Pt etc. [115,116]. The LASER beam hit on the metal surface causes plasmonic resonance which interacts with the analyte molecules and gets detected even in very low concentration (even in ppm levels) [117].…”

Section: Energy and Environmental Applicationsmentioning

confidence: 99%

Introduction to Bioinspired Nanomaterials

Kundu

Kumaravel

2021

Materials Research Foundations

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Nanomaterials (NMs) developed using biomolecules display numerous advantages which attract the science community to explore them for a wide range of applications. In this line, bio-scaffolds are studied as templates to form nano-bio heterojunctions in the nano confined materials. With the high flexibility of biomediated NMs, it is possible to develop desired size and shape selective NMs. Such bio-based NMs have great benefits in wide areas including catalysis, sensors and energy related applications particularly, electrocatalysis, supercapacitor, batteries etc. The viability of bio-scaffolds in developing metal superstructures makes them better choice in the medicinal fields. This book chapter mainly focused on the advantageous and challenges of bioinspired NMs in the medicinal field, particularly in drug delivery systems. Moreover, the synthetic methods such as enzyme catalyzed wet-chemical route, photo-irradiation and incubation methods were also discussed in detail. Also, this chapter gives a better understanding to the readers about the development of new nano-bio heterojunctions for medicine, energy and environmental fields. Moreover, the morphological features of nano-bio interactions at nanoscale level show predominant activity particularly in Surface Enhanced Raman Scattering (SERS) and sensor applications. With the knowledge gained from this chapter, in futuristic, one can go for the development of new metal nanostructures with different bio-scaffolds such as microorganisms, viruses, DNA and protein to mainstream applications for the medicinal fields.

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Nucleotide-Based Assemblies for Green Synthesis of Silver Nanoparticles with Controlled Localized Surface Plasmon Resonances and Their Applications

Cited by 30 publications

References 51 publications

Chlortetracycline-Functionalized Silver Nanoparticles as a Colorimetric Probe for Aminoglycosides: Ultrasensitive Determination of Kanamycin and Streptomycin

Chlortetracycline-Functionalized Silver Nanoparticles as a Colorimetric Probe for Aminoglycosides: Ultrasensitive Determination of Kanamycin and Streptomycin

Bio-Mediated Synthesis of Metal Nanomaterials for SERS Application

Introduction to Bioinspired Nanomaterials

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