Tailoring Plasmonics of Au@Ag Nanoparticles by Silica Encapsulation

Schultz, Johannes; Kirner, Felizitas; Potapov, Pavel; Büchner, B.; Lubk, Axel; Sturm, Elena V.

doi:10.1002/adom.202101221

Cited by 5 publications

(2 citation statements)

References 52 publications

(72 reference statements)

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“…Recently, EELS has been used to study interactions in dielectric-noble metal systems [2,5]. In Figure 1(c), we move further in this direction with the study of an Au nanorod-a-Si disc-Ag nanorod trimer.…”

mentioning

confidence: 88%

STEM-EELS Mapping of Eigenmodes and Coupling Effects of Photonic Silicon Nanocavities

Alexander

Flauraud²,

Demming-Janssen³

2022

Microscopy and Microanalysis

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mentioning

confidence: 88%

STEM-EELS Mapping of Eigenmodes and Coupling Effects of Photonic Silicon Nanocavities

Alexander

Flauraud²,

Demming-Janssen³

2022

Microscopy and Microanalysis

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“…The main chemical composition of BBO has been extensively resolved 13) (BBO, purity＞99％, purchased in Guizhou Ailikang Co., Ltd, China) , and here we use Gas chromatography (GC, GC-2010, Shimadzu Corporation, Japan) to analyze the main components of essential oil (including L-borneol, L-camphor, pinene, linalool, βcaryophyllene, pepper oleoresin) .…”

Section: Principal Component Analysis Of Bbomentioning

confidence: 99%

Nanoemulsion of the Essential Oil from <i>Blumea balsamifera</i> (L.) DC. and Its Effect on Trauma Repair

Liu,

Wang,

Zheng

et al. 2023

J. Oleo Sci.

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toms such as nausea and vomiting. The BBO can only work slowly and is not suitable for emergency patients and patients with oral disorders 2) . Nanoemulsions, as good carriers for lipophilic drugs, can improve drug solubility, fast absorption, high stability, and slow release targeting 3) , and are the ideal dosage form to address the application of BBO.Studies have shown that topical application of BBO improves wound healing 4) . Via enhancing the production of granulation in body tissues, it promotes the formation of new blood vessels, promoting epithelial deposition and wound contraction 5) . Fatty acids, as important components of the essential oils, accelerate wound healing by reducing free radicals and scavenging reactive oxygen species, alter-Abstract: The essential oil, extracted from the Hmong medicine Blumea balsamifera (L.) DC. (BBO), is a purely natural wound repair agent. Its application has, however, been restricted due to its low solubility and high volatility properties. In this study, we have developed a nanoemulsion formulation to improve the characteristics of BBO. The particle size of the nanoemulsion was normally distributed, and 71% of its range was concentrated between 10-100 nm, with an average particle size of 62.8 nm and an encapsulation rate of 98%. After 7 days of application, the wound healing rate of the BBO nanoemulsion (BBO-NE) group was 1.5 times higher than that of the normal BBO group. Along with histological observations, nanoemulsion formulation has been demonstrated to significantly improve the efficacy of BBO for wound repair. In addition, inflammation-related TLR4, CD14 and IRAK-1 gene transcript levels were significantly reduced after the administration of BBO-NE compared to the BBO group, with downregulation of 47.8%, 35.7% and 57.8%, respectively, while the secretion of pro-inflammatory factors IL-6 and TNF-α was also significantly reduced by 83.8% and 32.7%, respectively, in the nanoformulation administration (BBO-NE) group compared to the BBO group. In contrast, the anti-inflammatory factor IL-10 was significantly increased by 4.2-fold. It was further found that the drug penetration per unit area increased significantly 6.30% to 19.5% at different time points after the application of the BBO-NE compared to the BBO. In conclusion, nano-formulation enhanced the drug penetration of the BBO, reduced inflammatory factors, increased the level of anti-inflammatory factors, and promoted collagen deposition, thereby accelerating wound repair.

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Revealing the Impact of Polystyrene Functionalization of Au Octahedral Nanocrystals of Different Sizes on the Formation and Structure of Mesocrystals

Lapkin,

Singh,

Kirner

et al. 2023

ChemNanoMat

Self Cite

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The self‐assembly of anisotropic nanocrystals (stabilized by organic capping molecules) with pre‐selected composition, size, and shape allows for the creation of nanostructured materials with unique structures and features. For such a material, the shape and packing of the individual nanoparticles play an important role. This work presents a synthesis procedure for ω‐thiol‐terminated polystyrene (PS‐SH) functionalized gold nanooctahedra of variable size (edge length 37, 46, 58, and 72 nm). The impact of polymer chain length (Mw: 11k, 22k, 43k, and 66k g∙mol‐1) on the growth of colloidal crystals (e.g. mesocrystals) and their resulting crystal structure is investigated. Small‐angle X‐ray scattering (SAXS) and scanning transmission electron microscopy (STEM) methods provide a detailed structural examination of the self‐assembled faceted mesocrystals based on octahedral gold nanoparticles of different size and surface functionalization. Three‐dimensional angular X‐ray cross‐correlation analysis (AXCCA) enables high‐precision determination of the superlattice structure and relative orientation of nanoparticles in mesocrystals. This approach allows us to perform non‐destructive characterization of mesocrystalline materials and reveals their structure with resolution down to the nanometer scale.

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Tailoring Plasmonics of Au@Ag Nanoparticles by Silica Encapsulation

Cited by 5 publications

References 52 publications

STEM-EELS Mapping of Eigenmodes and Coupling Effects of Photonic Silicon Nanocavities

STEM-EELS Mapping of Eigenmodes and Coupling Effects of Photonic Silicon Nanocavities

Nanoemulsion of the Essential Oil from <i>Blumea balsamifera</i> (L.) DC. and Its Effect on Trauma Repair

Revealing the Impact of Polystyrene Functionalization of Au Octahedral Nanocrystals of Different Sizes on the Formation and Structure of Mesocrystals

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