Photocatalytic Nanostructured Self-Assembled Poly(allylamine hydrochloride)/Poly(acrylic acid) Polyelectrolyte Films Containing Titanium Dioxide–Gold Nanoparticles for Hydrogen Generation

2013 ◽  
Vol 117 (44) ◽  
pp. 23235-23243 ◽  
Author(s):  
Nicolle Dal’Acqua ◽  
Francine Ramos Scheffer ◽  
Rosiana Boniatti ◽  
Barbara Virgínia Mendonça da Silva ◽  
Janaina Viana de Melo ◽  
...  
2019 ◽  
Vol 950 ◽  
pp. 138-143
Author(s):  
Erindyah Retno Wikantyasning ◽  
Mutmainnah Mutmainnah ◽  
Ghiyats Ramadhan ◽  
Zakky Cholisoh ◽  
Muhammad Da'i

The aims of this study are to synthesize and characterize gold nanoparticles (AuNPs) crosslinked by pH-responsive polymer poly (acrylic acid) (PAA) and its application for detection of some analytes in herbal medicine product. In this study, a pH-responsive polymer, poly (acrylic acid) was prepared by the reversible addition-fragmentation chain transfer (RAFT) polymerization method. The polymer was then cross-linked by gold nanoparticles, which was synthesized by the Turkevich method. The response of the AuNPs-crosslinked PAA was observed by the color change from red to blue at a specific pH (4-5) and was characterized by TEM. The reversible color change was resulted from aggregation and disaggregation of the AuNPs due to the shrinking and swelling of the polymer when different pH was introduced as a stimulant. This sensor has the capability of recognizing analytes such as aspirin and tolbutamide added in the herbal medicine product at the concentration of 0.04-0.05 M.


2011 ◽  
Vol 212 (16) ◽  
pp. 1735-1741 ◽  
Author(s):  
Xin Zhang ◽  
Christopher J. Metting ◽  
Robert M. Briber ◽  
Florian Weilnboeck ◽  
Sang Hak Shin ◽  
...  

2016 ◽  
Vol 49 (19) ◽  
pp. 7563-7570 ◽  
Author(s):  
Yanpu Zhang ◽  
Fei Li ◽  
Luis D. Valenzuela ◽  
Maria Sammalkorpi ◽  
Jodie L. Lutkenhaus

2006 ◽  
Vol 922 ◽  
Author(s):  
Lei Liu ◽  
Jaime C. Grunlan

AbstractPoly(acrylic acid) (PAA) and poly(allylamine hydrochloride) (PAH) were used to tailor the microstructure of single-walled carbon nanotubes (SWNTs) in both aqueous solutions and dry composite films. Microstructural changes were achieved as the pH of aqueous suspensions were changed, as evidenced by elevated suspension viscosity, scanning electron microscopy and electrical conductivity measurements. The ability to tailor microstructure is useful for aqueous SWNT processing and solid polymer nanocomposites.


2015 ◽  
Vol 3 (28) ◽  
pp. 5769-5776 ◽  
Author(s):  
Jiaxiang Juan ◽  
Liang Cheng ◽  
Min Shi ◽  
Zhuang Liu ◽  
Xinliang Mao

Upconversion nanoparticles (UCNPs) have gained increased attention due to their various medical applications such as drug delivery, detection, imaging, and photodynamic therapy.


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