scholarly journals ZnO quantum dots modified bioactive glass nanoparticles with pH-sensitive release of Zn ions, fluorescence, antibacterial and osteogenic properties

2016 ◽  
Vol 4 (48) ◽  
pp. 7936-7949 ◽  
Author(s):  
Kai Zheng ◽  
Miao Lu ◽  
Bogdan Rutkowski ◽  
Xinyi Dai ◽  
Yuyun Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Antibacterial Activity ◽  
Quantum Dot ◽  
Bioactive Glass ◽  
Ph Sensitive ◽  
Zno Quantum Dots ◽  
Zn Ions

Zn containing bioactive glass nanoparticles fabricated by ZnO quantum dot coating of BG nanoparticles exhibit apatite forming ability, antibacterial activity and non-cytotoxicity.

pH-Sensitive ZnO Quantum Dots–Doxorubicin Nanoparticles for Lung Cancer Targeted Drug Delivery

2016 ◽  
Vol 8 (34) ◽  
pp. 22442-22450 ◽  
Author(s):  
Xiaoli Cai ◽  
Yanan Luo ◽  
Weiying Zhang ◽  
Dan Du ◽  
Yuehe Lin
Keyword(s):  
Lung Cancer ◽  
Drug Delivery ◽  
Quantum Dots ◽  
Targeted Drug Delivery ◽  
Ph Sensitive ◽  
Targeted Drug ◽  
Zno Quantum Dots

Role of Surface Adsorbed Anionic Species in Antibacterial Activity of ZnO Quantum Dots Against Escherichia coli

2009 ◽  
Vol 9 (11) ◽  
pp. 6427-6433 ◽  
Author(s):  
Prachi Joshi ◽  
Soumyananda Chakraborti ◽  
Pinak Chakrabarti ◽  
D. Haranath ◽  
Virendra Shanker ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Quantum Dots ◽  
Antibacterial Activity ◽  
Anionic Species ◽  
Zno Quantum Dots

Antibacterial activity of ZnO quantum dots and its protective effects of chicks infected with Salmonella pullorum

2021 ◽  
Vol 32 (50) ◽  
pp. 505104
Author(s):  
Yunchun Li ◽  
Songtao Xie ◽  
Dan Xu ◽  
Gang Shu ◽  
Xianxiang Wang
Keyword(s):  
Quantum Dots ◽  
Antibacterial Activity ◽  
Protective Effects ◽  
Salmonella Pullorum ◽  
Zno Quantum Dots

Synthesis and characterization of quantum dots for application in laser soft desorption/ionization mass spectrometry to detect labile metal–drug interactions and their antibacterial activity

RSC Advances ◽  
2015 ◽  
Vol 5 (93) ◽  
pp. 76107-76115 ◽  
Author(s):  
Hani Nasser Abdelhamid ◽  
Hui-Fen Wu
Keyword(s):  
Mass Spectrometry ◽  
Quantum Dots ◽  
Antibacterial Activity ◽  
Quantum Dot ◽  
Drug Interactions ◽  
Synthesis And Characterization ◽  
Ionization Mass ◽  
Mercaptopropionic Acid ◽  
Desorption Ionization

Synthesis and characterization of quantum dot modified mercaptopropionic acid (CdS@MPA) and its application in laser soft desorption/ionization for labile metal–drug interactions is reported.

scholarly journals pH-Responsive quantum dots (RQDs) that combine a fluorescent nanoparticle with a pH-sensitive dye

2014 ◽  
Vol 16 (46) ◽  
pp. 25255-25257 ◽  
Author(s):  
S. Ast ◽  
P. J. Rutledge ◽  
M. H. Todd
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Self Assembly ◽  
Ph Sensitive ◽  
Ph Responsive ◽  
Simple Process ◽  
Fluorescent Nanoparticle

A quantum dot conjugated to a dye through an experimentally simple process of self-assembly exhibits an enhanced emission when the dye is attached, and this effect is pH-sensitive.

Interpretation of the Phonon Frequency Shifts in ZnO Quantum Dots

2005 ◽  
Vol 872 ◽  
Author(s):  
Khan A. Alim ◽  
Vladimir A. Fonoberov ◽  
Alexander A. Balandin
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Phonon Frequency ◽  
Low Voltage ◽  
Red Shift ◽  
Phonon Confinement ◽  
Free Standing ◽  
Frequency Shifts ◽  
Zno Quantum Dots ◽  
Phonon Localization

AbstractNanostructures made of zinc oxide (ZnO), a wide-bandgap semiconductor, have recently attracted attention due to their proposed applications in low-voltage and short-wavelength (368 nm) electro-optical devices, transparent ultraviolet (UV) protection films, gas sensors, and varistors. Raman spectroscopy presents a powerful tool for identifying specific materials in complex structures and for extracting useful information on properties of nanoscale objects. At the same time the origin of Raman peak deviation from the bulk values is not always well understood for new material systems. There are three main mechanisms that can induce phonon shifts in the free-standing undoped ZnO nanostructures: (i) phonon confinement by the quantum dot boundaries; (ii) phonon localization on defects and (iii) the laser-induced heating in nanostructure ensembles. Here, we report results of the combined non-resonant and resonant Raman scattering studies of an ensemble of ZnO quantum dots with diameter 20 nm. Based on our experimental data, we have been able to identify the origin of the observed phonon frequency shifts. It has been found that the ultraviolet laser heating of the ensemble induces a large red shift of the phonon frequencies. It is calculated that the observed red shift of 14 cm-1 corresponds to the local temperature of the quantum dot ensemble of about 700°C.

scholarly journals Enhanced photoresponse of ZnO quantum dot-decorated MoS2 thin films

RSC Advances ◽  
2017 ◽  
Vol 7 (27) ◽  
pp. 16890-16900 ◽  
Author(s):  
Ghazanfar Nazir ◽  
M. Farooq Khan ◽  
Imtisal Akhtar ◽  
Kamran Akbar ◽  
Praveen Gautam ◽  
...  
Keyword(s):  
Thin Films ◽  
Quantum Dots ◽  
Quantum Dot ◽  
Thin Layer ◽  
Zno Quantum Dots

This paper reports on high photo responsivity (Rλ ∼ 1913 AW−1) of MoS2 photodetector by decorating a thin layer of ZnO quantum dots on MoS2.

NiAg-graphene quantum dot-graphene hybrid with high oxidase-like catalytic activity for sensitive colorimetric detection of malathion

2021 ◽  
Author(s):  
Xu Dan ◽  
Ruiyi Li ◽  
Qinsheng Wang ◽  
Yongqiang Yang ◽  
Haiyan Zhu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Catalytic Activity ◽  
Quantum Dot ◽  
Colorimetric Detection ◽  
Graphene Quantum Dots ◽  
Functionalized Graphene ◽  
Graphene Quantum Dot ◽  
Nickel Silver

The paper reports the synthesis of nickel-silver-graphene quantum dot-graphene hybrid. Histidine-functionalized graphene quantum dots (His-GQDs) were bonded to graphene oxide (GO) and then combined with Ni2+ and Ag+ to form...

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