Preparation of a highly luminescent nanocomposite by chelating copolymer

Wang, Cheng Chien; Chen, An-Liu; Chen, I-Han

doi:10.1002/pat.757

Cited by 13 publications

(4 citation statements)

References 26 publications

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“…Through this method, QDs can be grown inside polymer and polymer acts as the protective shell for QDs in aqueous solution. For example, PAMAM dendrimer [ 59 ] and PMMA polymeric microsphere [ 60 , 61 ] were used to fabricate highly luminescent PAMAM/CdS and PMMA/CdS QDs hybrid materials. Zhang et al [ 62 ] reported the employment of PNIPAM nanogel for kinds of QDs synthesis inside, such as semiconductor, metal and magnetic nanoparticles.…”

Section: How To Make Biocompatible Polymer/qds Hybrids?mentioning

confidence: 99%

Biocompatible Polymer/Quantum Dots Hybrid Materials: Current Status and Future Developments

Shen

2011

JFB

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Quantum dots (QDs) are nanometer-sized semiconductor particles with tunable fluorescent optical property that can be adjusted by their chemical composition, size, or shape. In the past 10 years, they have been demonstrated as a powerful fluorescence tool for biological and biomedical applications, such as diagnostics, biosensing and biolabeling. QDs with high fluorescence quantum yield and optical stability are usually synthesized in organic solvents. In aqueous solution, however, their metallic toxicity, non-dissolubility and photo-luminescence instability prevent the direct utility of QDs in biological media. Polymers are widely used to cover and coat QDs for fabricating biocompatible QDs. Such hybrid materials can provide solubility and robust colloidal and optical stability in water. At the same time, polymers can carry ionic or reactive functional groups for incorporation into the end-use application of QDs, such as receptor targeting and cell attachment. This review provides an overview of the recent development of methods for generating biocompatible polymer/QDs hybrid materials with desirable properties. Polymers with different architectures, such as homo- and co-polymer, hyperbranched polymer, and polymeric nanogel, have been used to anchor and protect QDs. The resulted biocompatible polymer/QDs hybrid materials show successful applications in the fields of bioimaging and biosensing. While considerable progress has been made in the design of biocompatible polymer/QDs materials, the research challenges and future developments in this area should affect the technologies of biomaterials and biosensors and result in even better biocompatible polymer/QDs hybrid materials.

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Section: How To Make Biocompatible Polymer/qds Hybrids?mentioning

confidence: 99%

Biocompatible Polymer/Quantum Dots Hybrid Materials: Current Status and Future Developments

Shen

2011

JFB

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“…QDs resemble particle size of the order of 1 nme20 nm (Goncharova et al, 2004). Due to their unique optical and electrical properties they have been already utilised in optoelectronic sensors (Guo et al, 2000;Eychmuller, 2000;Ma et al, 2003;Wang et al, 2006;Gbur et al, 2013), as radiation sensors (Del Sordo et al, 2009, Stodilka et al, 2009Baharin et al, 2010;Hobson et al, 2011;Nistor et al, 2013;Sahi and Chen, 2013) and theranostics in nuclear medicine (Assadi et al, 2011). Recent studies suggest also that QDs can be employed in optical diffusion applications of high sensitivity (e.g.…”

Section: Introductionmentioning

confidence: 98%

Radioluminescence properties of the CdSe/ZnS Quantum Dot nanocrystals with analysis of long-memory trends

Nikolopoulos

Valais

Michail

et al. 2016

Radiation Measurements

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h i g h l i g h t sLuminescence properties of CdSe/ZnS QDs under UV and X-ray irradiation. Detrended fluctuation analysis used to identify long-memory trends in the signal. QDs of high concentrations exhibited high absolute efficiency up to 80 kVp. CdSe/ZnS showed potential for detection of X-rays in the medical imaging energies. a b s t r a c tThis paper reports radioluminescence properties of the CdSe/ZnS quantum dots. Three quantum dot samples were prepared with concentrations 14.2 Â 10 À5 mg/mL, 21.3 Â 10 À5 mg/mL and 28.5 Â 10 À5 mg/ mL, respectively. The ultraviolet induced emission spectra of CdSe/ZnS dots exhibited a peak at 550 nm ranging between 450 nm and 650 nm. Discrepancies observed between 250 nm and 450 nm were attributed to the solvent and cuvette. The absolute efficiency calculated from random fractional-Gaussian luminescence segments varied. Long-memory fractional-Brownian segments were also found. The quantum dot solution with concentration of 21.3 Â 10 À5 mg/mL exhibited the maximum absolute efficiency value at 90 kVp. The CdSe/ZnS dots have demonstrated potential for detection of X-rays in the medical imaging energy range.

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“…Nano-sized semiconductor particles show unique size-dependent optical properties and are of high potentials in applications such as optoelectronics, and sensors [17][18][19][20][21][22]. Embedding semiconductor nano-particles to polymer particles, either on the polymer particle surfaces or enclosed inside, offer a pathway to form the inorganic-organic composite particles for applications as mentioned above.…”

Section: Introductionmentioning

confidence: 99%