Supercritical CO2-assisted synthesis of an ultrasensitive amphibious quantum dot-molecularly imprinted sensor

RSC Advances ◽  
2014 ◽  
Vol 4 (108) ◽  
pp. 63338-63341 ◽  
Author(s):  
A. Lourenço ◽  
R. Viveiros ◽  
A. Mouro ◽  
J. C. Lima ◽  
V. D. B. Bonifácio ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Molecular Recognition ◽  
Quantum Dot ◽  
Bisphenol A ◽  
Molecular Imprinting ◽  
Supercritical Co2 ◽  
Molecularly Imprinted ◽  
Low Concentrations

A green supercritical CO2-assisted molecular imprinting protocol enabled the production of smart sensory particles, incorporating quantum dots, with molecular recognition to bisphenol A at very low concentrations (4 nM).

scholarly journals Polymer composition primarily determines the protein recognition characteristics of molecularly imprinted hydrogels

2020 ◽  
Vol 8 (34) ◽  
pp. 7685-7695
Author(s):  
Abhijeet K. Venkataraman ◽  
John R. Clegg ◽  
Nicholas A. Peppas
Keyword(s):  
Molecular Recognition ◽  
Molecular Imprinting ◽  
Material Composition ◽  
Polymer Composition ◽  
Protein Recognition ◽  
Molecularly Imprinted

A hydrogel's molecular recognition properties are determined by the material composition, and are minimally influenced by molecular imprinting.

Effects of Cu Dopant on Lattice and Optical Properties of ZnS Quantum Dots

2016 ◽  
Vol 16 (4) ◽  
pp. 3816-3820
Author(s):  
Lu Shuhua ◽  
Wang Aiji ◽  
Chen Tingfang ◽  
Wang Yinshu
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Quantum Dot ◽  
Blue Shift ◽  
Red Shift ◽  
Colloidal Nanocrystals ◽  
Long Tail ◽  
Low Concentrations ◽  
Cu Dopant ◽  
Cu Ions

Doped and undoped ZnS colloidal nanocrystals have drawn much attention due to their versatile applications in the fields of optoelectronics and biotechnology. In this paper, Cu doped ZnS quantum dots were synthesized via the simple thermolysis of ethylxanthate salts. The lattice and optical properties of the nanocrystals were then studied in detail. The quantum dot lattice contracted linearly between Cu concentrations of 0.2–2%, while it continued to contract more gradually as Cu concentrations were further increased from 4 to 6%, due in part to the Cu ions located on the surface of the ZnS lattice. Cu incorporation induces a long tail in absorption at long wavelengths. The PL spectrum shows a red shift at first, and then a blue shift with increases in Cu concentration. Cu doped at low concentrations (0.2–1%) enhanced the emission, while high Cu concentrations (2–6%) quenched emissions.

Layer-by-layer fabrication of restricted access media-molecularly imprinted magnetic microspheres for magnetic dispersion microextraction of bisphenol A from milk samples

2015 ◽  
Vol 39 (3) ◽  
pp. 1792-1799 ◽  
Author(s):  
Yun-Kai Lv ◽  
Yan-Dong He ◽  
Xue Xiong ◽  
Jin-Zhi Wang ◽  
Hai-Yan Wang ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Bisphenol A ◽  
Magnetic Microspheres ◽  
Layer By Layer ◽  
Magnetic Microsphere ◽  
Molecularly Imprinted ◽  
Restricted Access ◽  
Milk Samples ◽  
Restricted Access Media

A novel hydrophilic BPA-imprinted magnetic microsphere was prepared with specific molecular recognition (2.54), water compatibility and exclusion biomacromolecules.

Molecularly imprinted electrochemical aptasensor based on functionalized graphene and nitrogen-doped carbon quantum dots for trace cortisol assay

The Analyst ◽  
2022 ◽  
Author(s):  
Chenhong Yu ◽  
Li Li ◽  
Yaping Ding ◽  
Huajie Liu ◽  
Hanyue Cui
Keyword(s):  
Quantum Dots ◽  
Molecular Imprinting ◽  
Trace Analysis ◽  
Carbon Quantum Dots ◽  
Functionalized Graphene ◽  
Electrochemical Aptasensor ◽  
Molecularly Imprinted ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

This paper proposes a novel electrochemical aptasensor that integrates molecular imprinting techniques for trace analysis of cortisol. This sensor is based on functionalized graphene and nitrogen-doped carbon quantum dots. The...

Signalling molecular recognition nanocavities with multiple functional groups prepared by molecular imprinting and sequential post-imprinting modifications for prostate cancer biomarker glycoprotein detection

2020 ◽  
Vol 8 (35) ◽  
pp. 7987-7993
Author(s):  
Tetsuro Saeki ◽  
Eri Takano ◽  
Hirobumi Sunayama ◽  
Yuri Kamon ◽  
Ryo Horikawa ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Molecular Recognition ◽  
Functional Groups ◽  
Molecular Imprinting ◽  
Molecularly Imprinted Polymers ◽  
Cancer Biomarker ◽  
Glycoprotein P ◽  
Molecularly Imprinted ◽  
Imprinted Polymers

Novel sequential post-imprinting modifications were demonstrated on the development of multi-functionalized molecularly imprinted polymers for a biomarker glycoprotein.

A core–shell CdTe quantum dots molecularly imprinted polymer for recognizing and detecting p-nitrophenol based on computer simulation

RSC Advances ◽  
2015 ◽  
Vol 5 (90) ◽  
pp. 73424-73433 ◽  
Author(s):  
Yingchun Wang ◽  
Ningwei Wang ◽  
Xiaoni Ni ◽  
Qianqian Jiang ◽  
Wenming Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Computer Simulation ◽  
Molecular Imprinting ◽  
Molecularly Imprinted Polymer ◽  
Cdte Quantum Dots ◽  
Core Shell ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Molecular Imprinting Technology

A novel molecular imprinting technology, combined with computer simulation and QDs, was used to detect 4-NP.

Discovery and Development of OMNiMIPs: One MoNomer Molecularly Imprinted Polymers

2007 ◽  
Vol 1005 ◽  
Author(s):  
David A. Spivak ◽  
Martha Sibrian-Vazquez ◽  
Stephen Houck
Keyword(s):  
Molecular Recognition ◽  
Molecular Imprinting ◽  
Molecularly Imprinted Polymers ◽  
Functional Monomer ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Recognition Element ◽  
Molecular Recognition Element ◽  
New Formulation ◽  
Separation Media

AbstractThere is enormous potential for the analytical applications of molecularly imprinted polymers (MIPs); for example, the imprinted polymer sites can function as the molecular recognition element of sensors, immunoassays, and separation media. However, difficulties with formulation variables and the need for empirical optimization have inhibited the widespread use of MIPs by the general scientific community. While investigating new crosslinkers for molecular imprinting, we have recently discovered a much simpler approach to MIP formation which utilizes a single crosslinking monomer, NOBE (N, Obismethacryloyl ethanolamine) in addition to template, solvent and initiator (shown in Scheme 1). We have given this molecular imprinting method the acronym “OMNiMIPs” which stands for one monomer molecularly imprinted polymers. This new formulation eliminates variables such as choice of functional monomer (FM) and crosslinker (XL), the ratio of functional monomer to crosslinker (FM/XL), and the ratio of functional monomer to template which normally complicates MIP design. The affects of OMNiMIP performance variables toward molecular recognition indicate significant differences between these new materials and traditional MIPs formulated with ethyleneglycol dimethacrylate (EGDMA) and methacrylic acid (MAA). These differences and the utility of OMNiMIPs will be discussed.

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