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	Optically pH and H(2)O(2) Dual Responsive Composite Colloids through the Directed Assembly of Organic Dyes on Responsive Microgels
	Wu, Weitai ; Zhou, Ting ; Aiello, Michael ; Zhou, Shuiqin ; Wu WT(吴伟泰)
	2009
关键词	CONJUGATED GOLD NANOPARTICLES POLYMER MICROGELS SUPRAMOLECULAR ASSEMBLIES CDTE NANOCRYSTALS PLASMON RESONANCE ACID) MICROGELS CARBOXYLIC-ACID AZO-DYE PARTICLES NANORODS
英文摘要	A novel type of smart composite materials based on the directed assembly of organic dyes on a responsive microgel template was prepared and investigated. We have chosen Calcon, a monoazo dye, as model organic dye molecules and the copolymer microgel of poly(N-isopropylacrylamide-acrylic acid-acrylamide) [p(NIPAM-AA-AAm)] as template with the pAA segments designed for inducing pH-sensitivity and the pAAm segments designed for directing the highly ordered assembly of dye molecules. Transmission electron microscopy, X-ray scattering, and light scattering were used to study the dye assembling structures and the pH-induced volume phase transitions of the composite microgels. The UV-vis absorption. and photoluminescence properties of the composite microgels were respectively investigated at different pH values and H2O2 concentrations. The pH-induced shrinkage of the template microgels not only results in a systematic shift in the wavelength of bands, but also significantly increases the absorption and emission intensity. The composite microgels also exhibit a highly H2O2-sensitive fluorescence quenching. The pAAm-directed highly ordered assembling structure of dye molecules is critical to produce the unique pH/H2O2 dual responsive optical properties, which may find important applications in bioimaging and biosensing.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/61466]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Wu, Weitai,Zhou, Ting,Aiello, Michael,et al. Optically pH and H(2)O(2) Dual Responsive Composite Colloids through the Directed Assembly of Organic Dyes on Responsive Microgels[J],2009.
APA	Wu, Weitai,Zhou, Ting,Aiello, Michael,Zhou, Shuiqin,&吴伟泰.(2009).Optically pH and H(2)O(2) Dual Responsive Composite Colloids through the Directed Assembly of Organic Dyes on Responsive Microgels..
MLA	Wu, Weitai,et al."Optically pH and H(2)O(2) Dual Responsive Composite Colloids through the Directed Assembly of Organic Dyes on Responsive Microgels".(2009).

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