Bio-synthesised Silver Nanoparticle-Conjugated l-Cysteine Ceiled Mn:ZnS Quantum Dots for Eco-friendly Biosensor and Antimicrobial Applications

2021 ◽  
Author(s):  
Sunil Kumar ◽  
Shalini Taneja ◽  
Shelza Banyal ◽  
Manju Singhal ◽  
Vijay Kumar ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Silver Nanoparticle

scholarly journals Plasmonic Oleylamine-Capped Gold and Silver Nanoparticle-Assisted Synthesis of Luminescent Alloyed CdZnSeS Quantum Dots

ACS Omega ◽  
2018 ◽  
Vol 3 (2) ◽  
pp. 1357-1366 ◽  
Author(s):  
Oluwasesan Adegoke ◽  
Kenshin Takemura ◽  
Enoch Y. Park
Keyword(s):  
Quantum Dots ◽  
Silver Nanoparticle

Ag-Conjugated graphene quantum dots with blue light-enhanced singlet oxygen generation for ternary-mode highly-efficient antimicrobial therapy

2020 ◽  
Vol 8 (7) ◽  
pp. 1371-1382 ◽  
Author(s):  
Yunjian Yu ◽  
Lin Mei ◽  
Yanmei Shi ◽  
Xinge Zhang ◽  
Kesong Cheng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Singlet Oxygen ◽  
Blue Light ◽  
Silver Nanoparticle ◽  
Broad Spectrum ◽  
Antimicrobial Therapy ◽  
Graphene Quantum Dots ◽  
Oxygen Generation ◽  
Singlet Oxygen Generation ◽  
Highly Efficient

A broad-spectrum antibacterial system was produced in which silver nanoparticle-conjugated graphene quantum dots were utilised as a blue light-enhanced nanotherapeutic for efficient ternary-mode antimicrobial therapy.

scholarly journals Construction of novel multifunctional luminescent nanoparticles based on DNA bridging and their inhibitory effect on tumor growth

RSC Advances ◽  
2019 ◽  
Vol 9 (26) ◽  
pp. 15042-15052 ◽  
Author(s):  
Qiaobei Pan ◽  
Jing Zhang ◽  
Xiang Li ◽  
Qian Zou ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Tumor Growth ◽  
Silver Nanoparticle ◽  
Graphene Quantum Dots ◽  
Inhibitory Effect ◽  
Rgd Peptide ◽  
Single Strand ◽  
Luminescent Nanoparticles

Cyclic RGD peptide was introduced onto the surface of silver nanoparticle (AgNP)-single strand DNA (ssDNA)-graphene quantum dots (GQDs) (ADG) after coating with a hybrid phospholipid material (ADG-DDPC) to be used for antitumor treatment.

Silver nanoparticle film induced photoluminescence enhancement of near-infrared emitting PbS and PbS/CdS core/shell quantum dots: observation of different enhancement mechanisms

Nanoscale ◽  
2016 ◽  
Vol 8 (9) ◽  
pp. 4882-4887 ◽  
Author(s):  
H. Y. Liang ◽  
H. G. Zhao ◽  
Z. P. Li ◽  
C. Harnagea ◽  
D. L. Ma
Keyword(s):  
Quantum Dots ◽  
Silver Nanoparticle ◽  
Ag Nanoparticles ◽  
Near Infrared ◽  
Core Shell ◽  
Photoluminescence Enhancement ◽  
Silver Nanoparticle Film ◽  
Nanoparticle Film

A plasmon/fluorophore system consisting of Ag nanoparticles and near-infrared quantum dots (QDs) is investigated for photoluminescence (PL) enhancement.

A novel strategy for the detection of tert-butylhydroquinone based on graphene quantum dots and silver nanoparticle modified glass carbon electrode

2015 ◽  
Vol 93 (6) ◽  
pp. 648-654 ◽  
Author(s):  
Xiuli Niu ◽  
Wu Yang ◽  
Hao Guo ◽  
Jie Ren ◽  
Jing Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electron Transfer ◽  
Modified Electrode ◽  
Silver Nanoparticle ◽  
Graphene Quantum Dots ◽  
Surface Concentration ◽  
Glass Carbon Electrode ◽  
Glass Carbon ◽  
One Step ◽  
Novel Strategy

Graphene quantum dots (GQDs) were synthesized by a facile one-step wet chemically derived from carbon fibers. A novel, sensitive, simple, and convenient method for the detection of tert-butylhydroquinone (TBHQ) was established based on GQDs and silver nanoparticle (AgNP) modified electrode. The modified electrode exhibited excellent electrocatalytic performance toward the electrochemical detection of TBHQ. Meanwhile, a possible reaction mechanism related to the oxidation of TBHQ was proposed. The electron transfer number and electron transfer coefficient were found to be 3.05 and 0.40. The surface concentration of TBHQ on GQD/AgNP-modified electrode was calculated as 2.62 × 10−10 mol cm−2. Under the optimum conditions, a good linear relationship between peak current and the concentration of TBHQ was obtained in the range of 0.15–300 μmol L–1 with a detection limit of 0.07 μmol L–1 (S/N = 3). The proposed method was successfully applied for the detection of TBHQ in edible vegetable oil.

Nanostructure of semiconductor quantum dots in a borosilicate glass matrix by complementary use of HREM and AEM

1990 ◽  
Vol 48 (4) ◽  
pp. 728-729
Author(s):  
M.J. Kim ◽  
L.C. Liu ◽  
S.H. Risbud ◽  
R.W. Carpenter
Keyword(s):  
Quantum Dots ◽  
Borosilicate Glass ◽  
Glass Matrix ◽  
Optical Switching ◽  
Response Times ◽  
Fast Response ◽  
Processing Technique ◽  
Internal Stresses ◽  
Electron Hole ◽  
Spatial Dimensions

When the size of a semiconductor is reduced by an appropriate materials processing technique to a dimension less than about twice the radius of an exciton in the bulk crystal, the band like structure of the semiconductor gives way to discrete molecular orbital electronic states. Clusters of semiconductors in a size regime lower than 2R {where R is the exciton Bohr radius; e.g. 3 nm for CdS and 7.3 nm for CdTe) are called Quantum Dots (QD) because they confine optically excited electron- hole pairs (excitons) in all three spatial dimensions. Structures based on QD are of great interest because of fast response times and non-linearity in optical switching applications.In this paper we report the first HREM analysis of the size and structure of CdTe and CdS QD formed by precipitation from a modified borosilicate glass matrix. The glass melts were quenched by pouring on brass plates, and then annealed to relieve internal stresses. QD precipitate particles were formed during subsequent "striking" heat treatments above the glass crystallization temperature, which was determined by differential thermal analysis.

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