Facile Synthesis of Thermally Stable Core−Shell Gold Nanoparticles via Photo-Cross-Linkable Polymeric Ligands

Yoo, Misang; Kim, Seyong; Lim, Jong-Min; Krämer, Edward J.; Hawker, Craig J.; Kim, Bumjoon J.; Bang, Joona

doi:10.1021/ma1000145

Cited by 71 publications

(87 citation statements)

References 54 publications

(73 reference statements)

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“…16 Figure S1). [33][34][35] The δ value is comparable to the values reported previously for other systems involving PNIPAAm brushes on graphene. 13,36 The conjugation of the P7AC-b-PNIPAAm polymers to the surface of the GQDs was confirmed by attenuated total-reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) measurements.…”

Section: Introductionsupporting

confidence: 86%

Multicolor Emitting Block Copolymer-Integrated Graphene Quantum Dots for Colorimetric, Simultaneous Sensing of Temperature, pH, and Metal Ions

et al. 2015

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Highly-selective optical sensors that are capable of detecting complex stimuli have attracted significant interest in environmental, biomedical, and analytical chemistry applications. In this work, we report the development of novel and versatile platform for highly-efficient, colorimetric multi-functional sensors using block copolymer-integrated graphene quantum dots (bcp-GQDs). In particular, the multi-functional sensing behavior is successfully generated simply by grafting blue emitting, temperature-responsive block copolymers onto greenemitting, 10-nm size GQD with the GQD providing luminescent response to pH changes. Thus, the bcp-GQDs showed simultaneous, orthogonal sensing behavior to temperature and pH, as well as dose-dependent responses to different types of metal ions. In addition, the bcp-GQD sensor showed excellent reversibility and dispersion stability in pure water, indicating that our system is an ideal platform for environmental and biological applications. The detailed mechanism of the responsive behavior of the bcp-GQDs was elucidated by measurements of time-resolved fluorescence and dynamic light scattering.

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Section: Introductionsupporting

confidence: 86%

Multicolor Emitting Block Copolymer-Integrated Graphene Quantum Dots for Colorimetric, Simultaneous Sensing of Temperature, pH, and Metal Ions

et al. 2015

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“…They used the diblock copolymer as ligands to improve the thermal stability and compatibility of Au NPs. 24 A thiol-terminated block copolymer consisting of polystyrene (M n 2 kg/mol) and azido-polystyrene (M n 1 kg/mol), P(S-b-S-N 3 )-SH, was synthesized via RAFT polymerization. They circumspectly designed the ligands where the short P(SAN 3 ) block is placed adjacent to the thiol group.…”

Section: Grafting-to Methodsmentioning

confidence: 99%

Design and fabrication of thermally stable nanoparticles for well‐defined nanocomposites

Yoo

Kim

Bang

2013

J Polym Sci B Polym Phys

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The nanocomposites consisted of polymer and nanoparticles (NPs) have been regarded as one of core materials in the nanotechnology. From the practical viewpoint, the heat treatment is often required in many nanocomposite fabrication processes. However, some NPs such as gold NPs exhibit the low thermal stability due to the dissociation of ligands from the nanoparticle surface at elevated temperature, limiting their use in many applications. Herein, we provide an overview of the recent efforts in strategies for the design and fabrication of inorganic NPs which have enhanced thermal stability. The recent investigation on the phase behavior of thermally stable NPs within the polymer matrices (polymer blends and block copolymer), morphologies of nanocomposites induced by NPs, and examples of their applications are also discussed. These approaches may provide useful strategy to employ the NPs for the fabrication of nanocomposites in diverse applications especially where heat treatment are required.

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“…Color test result between indicator strips (before reaction) and after reaction with 50,000 ppm standard solution of diclofenac sodium concentrations lead to pore formed more tightly [26]. Increasing concentrations of polymers will make polymer intermolecular pores become smaller and be selective [27].…”

Section: Figmentioning

confidence: 99%

Design of Indicator Strip Using Polystyrene (PS) and Polymethylmethacrylate (PMMA) for Detection of Diclofenac Sodium in Traditional Pain Relief Herbal Medicines

2017

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Facile Synthesis of Thermally Stable Core−Shell Gold Nanoparticles via Photo-Cross-Linkable Polymeric Ligands

Cited by 71 publications

References 54 publications

Multicolor Emitting Block Copolymer-Integrated Graphene Quantum Dots for Colorimetric, Simultaneous Sensing of Temperature, pH, and Metal Ions

Multicolor Emitting Block Copolymer-Integrated Graphene Quantum Dots for Colorimetric, Simultaneous Sensing of Temperature, pH, and Metal Ions

Design and fabrication of thermally stable nanoparticles for well‐defined nanocomposites

Design of Indicator Strip Using Polystyrene (PS) and Polymethylmethacrylate (PMMA) for Detection of Diclofenac Sodium in Traditional Pain Relief Herbal Medicines

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