Bimetallic nanostructures on porous silicon with controllable surface plasmon resonance

Khinevich, Nadzeya; Zavatski, Siarhei; Kholyavo, Victor; Bandarenka, Hanna

doi:10.1140/epjp/i2019-12567-4

Cited by 3 publications

(2 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The above observation shows that more electrons are transferred from porous MXene (Nb and O) to Dox than from MXene to Dox, indicating the relatively strong interaction between Dox and porous MXene compared to Dox and MXene. XPS characterization demonstrates the difference of surface properties between porous MXene and MXene, where the nanopore structure of porous MXene can further improve optical absorbance performance by enhanced SPR effect. − In addition, the dangling bonds and defects formed by C–Co, Nb–O, etc., can also act as exciton–phonon recombination centers to enhance the PTCE (Figure f). − The FTIR spectral analysis was performed to analyze the functional groups of MXene and porous MXene before and after Dox loading (Figure e). The FTIR spectrum of Dox exhibits a representative absorption peak at 1620 and 1577 cm –1 , which corresponds to the bending vibration of the N–H bond in Dox.…”

Section: Resultsmentioning

confidence: 99%

“…On the contrary, the design concept of subtractive structural engineering refers to improving the performance of materials by reducing and manipulating the crystal structure of materials at the atomic level. Subtractive structural modifications, such as porous engineering of nanomaterials such as silica 3D materials, have effectively increased the surface area for cargo-loading, , surface plasmon resonance (SPR), − and PTCE. − For biological applications, the nanoporous structure is promising to increase drug-loading and cell adhesion. − The addition of porous material to 2D nanosheets has been tested, mainly including the coating of mesoporous silica on MXene nanosheets, − black phosphorus nanosheets, and silicene nanosheets. , This additive porous engineering of 2D nanomaterials indeed promotes drug-loading. However, the porous mesoporous-silica layer impaired the extinction coefficient of MXene nanosheets .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Subtractive Nanopore Engineered MXene Photonic Nanomedicine with Enhanced Capability of Photothermia and Drug Delivery for Synergistic Treatment of Osteosarcoma

Hui,

Fu,

Zheng

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Two-dimensional (2D) nanomaterials as drug carriers and photosensitizers have emerged as a promising antitumor strategy. However, our understanding of 2D antitumor nanomaterials is limited to intrinsic properties or additive modification of different materials. Subtractive structural engineering of 2D nanomaterials for better antitumor efficacy is largely overlooked. Here, subtractively engineered 2D MXenes with uniformly distributed nanopores are synthesized. The nanoporous defects endowed MXene with enhanced surface plasmon resonance effect for better optical absorbance performance and strong exciton−phonon coupling for higher photothermal conversion efficiency. In addition, porous structure improves the binding ability between drug and unsaturated bonds, thus promoting drugloading capacity and reducing uncontrolled drug release. Furthermore, the porous structure provides adhesion sites for filopodia, thereby promoting the cellular internalization of the drug. Clinically, osteosarcoma is the most common bone malignancy routinely treated with doxorubicin-based chemotherapy. There have been no significant treatment advances in the past decade. As a proof-of-concept, nanoporous MXene loaded with doxorubicin is developed for treating human osteosarcoma cells. The porous MXene platform results in a higher amount of doxorubicin-loading, faster near-infrared (NIR)controlled doxorubicin release, higher photothermal efficacy under NIR irradiation, and increased cell adhesion and internalization. This facile method pioneers a new paradigm for enhancing 2D material functions and is attractive for tumor treatment.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Subtractive Nanopore Engineered MXene Photonic Nanomedicine with Enhanced Capability of Photothermia and Drug Delivery for Synergistic Treatment of Osteosarcoma

Hui,

Fu,

Zheng

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

Fabrication of silver nanostructure array patterns (SNAPs) on silicon wafer for highly sensitive and reliable SERS substrates

Huang,

Chen,

Shang

et al. 2024

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

View full text Add to dashboard Cite

Size effect on nonlinear optical properties and ultrafast dynamics of silver nanoparticles

Jiang

Miao

et al. 2022

Opt. Express

View full text Add to dashboard Cite

Z-scan technology was used to study the nonlinear absorption (NLA) and nonlinear refraction (NLR) of silver nanoparticles (Ag NPs) with various sizes under different laser intensities. The results demonstrate that the NLA and NLR of Ag NPs were size-dependent. Specifically, the 10 nm Ag NPs exhibit saturation absorption (SA) and insignificant NLR. The 20 and 40 nm Ag NPs show the coexistence of SA and reverse saturation absorption (RSA). SA is believed to result from ground-state plasma bleaching, whereas RSA originates from excited state absorption (ESA). The 20 nm and 40 nm Ag NPs shows increasing self-defocusing with the increase of laser intensity. It was observed that the energy relaxation of Ag NPs mainly includes two processes of electron-phonon and phonon-phonon couplings on the order of picoseconds.

show abstract

Bimetallic nanostructures on porous silicon with controllable surface plasmon resonance

Cited by 3 publications

References 34 publications

Subtractive Nanopore Engineered MXene Photonic Nanomedicine with Enhanced Capability of Photothermia and Drug Delivery for Synergistic Treatment of Osteosarcoma

Subtractive Nanopore Engineered MXene Photonic Nanomedicine with Enhanced Capability of Photothermia and Drug Delivery for Synergistic Treatment of Osteosarcoma

Fabrication of silver nanostructure array patterns (SNAPs) on silicon wafer for highly sensitive and reliable SERS substrates

Size effect on nonlinear optical properties and ultrafast dynamics of silver nanoparticles

Contact Info

Product

Resources

About