Publications (7)37.87 Total impact
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Article: A Spherical Porphyrin Sensor Array Based on Encoded Colloidal Crystal Beads for VOC Vapour Detection.
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ABSTRACT: A spherical porphyrin sensor array using colloidal crystal beads (CCBs) as the encoding microcarriers has been developed for VOC vapour detection. Six different porphyrins were coated onto the CCBs with distinctive encoded reflection peaks via physical adsorption and the sensor array was fabricated by placing the prepared porphyrin-modified CCBs together. The change in fluorescence colour of the porphyrin-modified CCBs array serves as the detection signal for discriminating between different VOC vapours and the reflection peak of the CCBs serves as the encoding signal to distinguish between different sensors. It was demonstrated that the VOC vapours detection using the prepared sensor array showed excellent discrimination: not only could the compounds from the different chemical classes be easily differentiated (e.g., alcohol vs. acids vs. ketones), but similar compounds from the same chemical family (e.g., methanol vs. ethanol) and the same compound with different concentration ((e.g., Sat. ethanol vs. 60ppm ethanol vs. 10ppm ethanol) could also be distinguished. The detection reproducibility and the humidity effect were also investigated. The present spherical sensor array, with its simple preparation, rapid response, high sensitivity, reproducibility and humidity insensitivity, and especially with stable and high-throughput encoding, is promising for real applications in artificial olfactory systems.ACS Applied Materials & Interfaces 11/2012; · 4.53 Impact Factor -
Article: A thermally tunable inverse opal photonic crystal for monitoring glass transition.
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ABSTRACT: An optical method was developed to monitor the glass transition of the polymer by taking advantage of reflection spectrum change of the thermally tunable inverse opal photonic crystal. The thermally tunable photonic bands of the polymer inverse opal photonic crystal were traceable to the segmental motion of macromolecules, and the segmental motion was temperature dependent. By observing the reflection spectrum change of the polystyrene inverse opal photonic crystal during thermal treatment, the glass transition temperature of polystyrene was gotten. Both changes of the position and intensity of the reflection peak were observed during the glass transition process of the polystyrene inverse opal photonic crystal. The optical change of inverse opal photonic crystal was so large that the glass transition temperature could even be estimated by naked eyes. The glass transition temperature derived from this method was consistent with the values measured by differential scanning calorimeter.Journal of Nanoscience and Nanotechnology 03/2012; 12(3):1984-7. · 1.56 Impact Factor -
Article: Magnetochromatic Microcapsule Arrays for Displays
Advanced Functional Materials 03/2011; 21(11):2043 - 2048. · 10.18 Impact Factor -
Article: A magnetically tunable colloidal crystal film for reflective display.
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ABSTRACT: A general approach to fabricate a magnetic field responsive colloidal crystal film has been developed. This is carried out by depositing monodisperse Fe(3) O(4) /PS composite magnetic nanospheres on the surface of an agarose-gel coated substrate. The optical properties of the resultant film can be easily controlled by an external magnetic field, which is caused by assembly of the magnetic nanospheres and alteration of the interparticle distance. With the help of a designed array of small magnets, both the color and pattern of the film can be conveniently modulated and the tuning range covers almost the whole visible spectrum. This work will be important for the potential application of monodisperse magnetic nanospheres in fabricating novel sensors, displays and optoelectronic devices.Macromolecular Rapid Communications 11/2009; 30(22):1945-9. · 4.60 Impact Factor -
Article: Multiplex chemiluminescent immunoassay based on silica colloidal crystal beads.
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ABSTRACT: The paper presented a novel multiplex chemiluminescence (CL) immunoassay method, which was based on silica colloidal crystals beads (SCCBs) as carriers using enhanced chemiluminescence (CL) detection of a horseradish peroxidase (HRP) catalyzing the luminal reaction. The monodisperse and size-controlled SCCBs were fabricated by a microfluidic device. The experimental conditions were optimized and analytical performance was studied. Results showed that the SCCBs as supports were much sensitive (0.05 ng/ml IgG) than the glass beads (18 ng/ml IgG) and the planar carriers (125 ng/ml IgG). A multiplex immunoassay suggested the feasibility of high throughput applications. This novel immunoassay system provided a simple, sensitive and low-cost approach for multianalyte immunoassay without using of expensive array detector.Journal of Nanoscience and Nanotechnology 11/2009; 9(11):6320-5. · 1.56 Impact Factor -
Article: Colloidal crystal beads composed of core-shell particles for multiplex bioassay.
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ABSTRACT: A convenient method was developed to fabricate colloidal crystal beads (CCBs) with tough mechanical strength, which was used as encoded carriers for multiplex bioassay. The latex particles used for the construction of the CCBs were designed with a rigid core PS and a elastomeric shell poly(MMA/EA/MAA), and were prepared via one-step soap-free emulsion polymerization. The as-above-prepared CCBs were thermo-treated to drive the elastomeric shells of adjacent latex particles joining together. It was found that the coalescence of latex particles can greatly improve the mechanical strength of the CCBs for multiplex bioassay.Journal of Nanoscience and Nanotechnology 05/2009; 9(4):2586-91. · 1.56 Impact Factor -
Article: Encoded porous beads for label-free multiplex detection of tumor markers.
Advanced Materials 02/2009; 21(5):569-72. · 13.88 Impact Factor
Top co-authors
Top Journals
Institutions
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2009–2012
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Southeast University (China)
Nanjing, Jiangxi Sheng, China
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2011
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Nanjing University
- Department of Chemical Engineering
Nanjing, Jiangsu Sheng, China
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