Self-Assembled Core–Satellite Gold Nanoparticle Networks for Ultrasensitive Detection of Chiral Molecules by Recognition Tunneling Current

ACS Nano ◽  
2016 ◽  
Vol 10 (5) ◽  
pp. 5096-5103 ◽  
Author(s):  
Yuanchao Zhang ◽  
Jingquan Liu ◽  
Da Li ◽  
Xing Dai ◽  
Fuhua Yan ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Tunneling Current ◽  
Ultrasensitive Detection ◽  
Chiral Molecules ◽  
Self Assembled ◽  
Recognition Tunneling

Label-free electrochemical immunosensor based on gold nanoparticle/polyethyleneimine/reduced graphene oxide nanocomposite for the ultrasensitive detection of cancer biomarker matrix metalloproteinase-1

The Analyst ◽  
2021 ◽  
Author(s):  
Xinke Liu ◽  
Lu-Yin Lin ◽  
Fu-Yen Tseng ◽  
Yu-Cheng Tan ◽  
Jian Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Matrix Metalloproteinase ◽  
Gold Nanoparticle ◽  
Reduced Graphene Oxide ◽  
Electrochemical Immunosensor ◽  
Ultrasensitive Detection ◽  
Label Free ◽  
Matrix Metalloproteinase 1 ◽  
Reduced Graphene ◽  
P Matrix

Matrix metalloproteinase-1 (MMP-1) is associated with many types of cancers, including oral, colorectal, and brain cancers. This paper describes the fabrication of an MMP-1 immunosensor based on a gold nanoparticle/polyethyleneimine/reduced...

Detecting spatial rearrangement of individual gold nanoparticle heterodimers

2019 ◽  
Vol 21 (19) ◽  
pp. 10146-10151
Author(s):  
Dániel Péter Szekrényes ◽  
Szilárd Pothorszky ◽  
Dániel Zámbó ◽  
András Deák
Keyword(s):  
Gold Nanoparticle ◽  
Spatial Arrangement ◽  
Gold Nanosphere ◽  
Self Assembled

Spatial arrangement of self-assembled gold nanosphere/nanorod heterodimers and their reorgaization upon drying detected using polarization-resolved scattering spectroscopy.

Self-Assembled Gold Nanoparticle/Alkanedithiol Films:  Preparation, Electron Microscopy, XPS-Analysis, Charge Transport, and Vapor-Sensing Properties†

2003 ◽  
Vol 107 (30) ◽  
pp. 7406-7413 ◽  
Author(s):  
Yvonne Joseph ◽  
Isabelle Besnard ◽  
Miriam Rosenberger ◽  
Berit Guse ◽  
Heinz-Georg Nothofer ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Charge Transport ◽  
Gold Nanoparticle ◽  
Xps Analysis ◽  
Sensing Properties ◽  
Vapor Sensing ◽  
Self Assembled

Self-Assembled Gold Nanoparticle Thin Films with Nonmetallic Optical and Electronic Properties

Langmuir ◽  
1998 ◽  
Vol 14 (19) ◽  
pp. 5425-5429 ◽  
Author(s):  
Mathias Brust ◽  
Donald Bethell ◽  
Christopher J. Kiely ◽  
David J. Schiffrin
Keyword(s):  
Thin Films ◽  
Electronic Properties ◽  
Gold Nanoparticle ◽  
Optical And Electronic Properties ◽  
Self Assembled

scholarly journals Facile Detection and Quantification of Acetamiprid Using a Portable Raman Spectrometer Combined with Self-Assembled Gold Nanoparticle Array

Chemosensors ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 327
Author(s):  
Panxue Wang ◽  
Yan Sun ◽  
Li Wang ◽  
Xiang Li ◽  
Miaomiao Liu ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Correlation Coefficients ◽  
Nanoparticle Array ◽  
Sers Signal ◽  
Sers Substrates ◽  
Specificity And Sensitivity ◽  
Exciting Opportunity ◽  
Sers Detection ◽  
Self Assembled ◽  
Detection And Quantification

Rapid and facile determination of pesticides is critically important in food and environmental monitoring. This study developed a self-assembled gold nanoparticle array based SERS method for highly specific and sensitive detection of acetamiprid, a neonicotinoid pesticide that used to be difficult in SERS analysis due to its low affinity with SERS substrates. SERS detection and quantification of acetamiprid was conducted with self-assembled gold nanoparticle arrays at the interface of chloroform and water as the enhancing substrate. Since targets dissolved in chloroform (organic phase) also have access to the hot-spots of Au NP array, the developed method exhibited good sensitivity and specificity for acetamiprid determination. Under the optimal conditions, SERS intensities at Raman shifts of 631 cm−1 and 1109 cm−1 displayed a good linear relationship with the logarithm concentration of acetamiprid in the range of 5.0 × 10−7 to 1.0 × 10−4 mol/L (0.11335 ppm to 22.67 ppm), with correlation coefficients of 0.97972 and 0.97552, respectively. The calculated LOD and LOQ of this method were 1.19 × 10−7 mol/L (0.265 ppb) and 2.63 × 10−7 mol/L (0.586 ppb), respectively, using SERS signal at 631 cm−1, and 2.95 × 10−7 mol/L (0.657 ppb) and 3.86 × 10−7 mol/L (0.860 ppb) using SERS signal at 1109 cm−1, respectively. Furthermore, the developed SERS method was successfully applied in determining acetamiprid on the surface of apple and spinach. This method offers an exciting opportunity for rapid detection of acetamiprid and other organic pesticides considering its advantages of simple preparation process, good specificity and sensitivity, and short detection time (within 1 h).

Self-assembled gold nanoparticle-molecular electronic networks

2017 ◽  
Vol 254 (9) ◽  
pp. 1700061 ◽  
Author(s):  
Po Zhang ◽  
Anusha Venkataraman ◽  
Chris Papadopoulos
Keyword(s):  
Gold Nanoparticle ◽  
Molecular Electronic ◽  
Electronic Networks ◽  
Self Assembled

A nano-structured Ni(II)–ACDA modified gold nanoparticle self-assembled electrode for electrocatalytic oxidation and determination of tryptophan

2011 ◽  
Vol 56 (11) ◽  
pp. 4022-4030 ◽  
Author(s):  
Mohammad Bagher Gholivand ◽  
Afshin Pashabadi ◽  
Azadeh Azadbakht ◽  
Saeid Menati
Keyword(s):  
Gold Nanoparticle ◽  
Electrocatalytic Oxidation ◽  
Self Assembled

scholarly journals Formation of self-assembled gold nanoparticle supercrystals with facet-dependent surface plasmonic coupling

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Kaifu Bian ◽  
Hattie Schunk ◽  
Dongmei Ye ◽  
Austin Hwang ◽  
Ting Shan Luk ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Plasmonic Coupling ◽  
Self Assembled
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