A chelating dendritic ligand capped quantum dot: preparation, surface passivation, bioconjugation and specific DNA detection

Nanoscale ◽  
2011 ◽  
Vol 3 (1) ◽  
pp. 201-211 ◽  
Author(s):  
Dejian Zhou ◽  
Yang Li ◽  
Elizabeth A. H. Hall ◽  
Chris Abell ◽  
David Klenerman
Keyword(s):  
Quantum Dot ◽  
Surface Passivation ◽  
Dna Detection ◽  
Dendritic Ligand

Probing and Controlling Surface Passivation of PbS Quantum Dot Solid for Improved Performance of Infrared Absorbing Solar Cells

2019 ◽  
Vol 31 (11) ◽  
pp. 4081-4091 ◽  
Author(s):  
Xiaoliang Zhang ◽  
Ute B. Cappel ◽  
Donglin Jia ◽  
Qisen Zhou ◽  
Juan Du ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Surface Passivation ◽  
Improved Performance ◽  
Pbs Quantum Dot

Surface passivation dependent photoluminescence from silicon quantum dot phosphors

2012 ◽  
Vol 37 (22) ◽  
pp. 4771 ◽  
Author(s):  
Chang-Ching Tu ◽  
Ji-Hao Hoo ◽  
Karl F. Böhringer ◽  
Lih Y. Lin ◽  
Guozhong Cao
Keyword(s):  
Quantum Dot ◽  
Surface Passivation ◽  
Silicon Quantum Dot

Polypyrrole/Graphene Quantum Dot Composites as a Sensor Media for Epinephrine

2020 ◽  
Vol 20 (7) ◽  
pp. 4005-4010 ◽  
Author(s):  
Thi Hoa Le ◽  
Dal Ho Lee ◽  
Ji Hyeon Kim ◽  
Sang Joon Park
Keyword(s):  
Quantum Dot ◽  
Photoinduced Electron Transfer ◽  
Surface Passivation ◽  
Fluorescence Emission ◽  
Fluorescence Signal ◽  
Serum Samples ◽  
Strong Fluorescence ◽  
Electron Transfer Process ◽  
Graphene Quantum Dot ◽  
Amine Groups

In this paper, we discuss a new biosensor for simple and rapid detection of epinephrine (EP) based on polypyrrole/graphene quantum dot (PPy/GQD) composites. Presence of amine groups on the PPy backbone leads to surface passivation of GQDs. As a result, the composites exhibit strong fluorescence emission, which can be up to three times that of pristine GQDs. In neutral to alkaline solution, the EP on the surface of PPy/GQD composites is converted to a quinone, which triggers the fluorescence quenching of PPy/GQD composites via a photoinduced electron transfer process. Hence, the concentration of EP can be effectively monitored by measuring the variation in the fluorescence signal of PPy/GQD composites. The quenched fluorescence intensity of PPy/GQDs was proportional to the concentration of EP (0.7–400 μM). We used our method to determine the concentration of EP in human serum samples and obtained satisfactory results.

scholarly journals Quantum-dot-embedded silica nanotubes as nanoprobes for simple and sensitive DNA detection

2011 ◽  
Vol 22 (15) ◽  
pp. 155102 ◽  
Author(s):  
Yi-Hsin Liu ◽  
Yi-Yun Tsai ◽  
Hsiao-Ju Chien ◽  
Chien-Ying Chen ◽  
Yu-Feng Huang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Dna Detection ◽  
Silica Nanotubes

Single Quantum Dot-Based Nanosensor for Multiple DNA Detection

2010 ◽  
Vol 82 (5) ◽  
pp. 1921-1927 ◽  
Author(s):  
Chun-yang Zhang ◽  
Juan Hu
Keyword(s):  
Quantum Dot ◽  
Dna Detection ◽  
Single Quantum ◽  
Single Quantum Dot

scholarly journals A Compact Functional Quantum Dot−DNA Conjugate:  Preparation, Hybridization, and Specific Label-Free DNA Detection

Langmuir ◽  
2008 ◽  
Vol 24 (5) ◽  
pp. 1659-1664 ◽  
Author(s):  
Dejian Zhou ◽  
Liming Ying ◽  
Xin Hong ◽  
Elizabeth A. Hall ◽  
Chris Abell ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Dna Detection ◽  
Label Free ◽  
Free Dna ◽  
Specific Label

Silicon Surface Passivation for Silicon-Colloidal Quantum Dot Heterojunction Photodetectors

ACS Nano ◽  
2021 ◽  
Author(s):  
Qiwei Xu ◽  
I Teng Cheong ◽  
Lingju Meng ◽  
Jonathan G. C. Veinot ◽  
Xihua Wang
Keyword(s):  
Quantum Dot ◽  
Silicon Surface ◽  
Surface Passivation ◽  
Colloidal Quantum Dot ◽  
Silicon Surface Passivation

Quantum dot-functionalized porous ZnO nanosheets as a visible light induced photoelectrochemical platform for DNA detection

Nanoscale ◽  
2014 ◽  
Vol 6 (5) ◽  
pp. 2710-2717 ◽  
Author(s):  
Wenjing Wang ◽  
Qing Hao ◽  
Wei Wang ◽  
Lei Bao ◽  
Jianping Lei ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Visible Light ◽  
Dna Detection ◽  
Zno Nanosheets

A visible light induced photoelectrochemical strategy is achieved using CdTe QD-functionalized porous ZnO nanosheets for the detection of DNA.

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