Centrifugation-Induced Water-Tunable Photonic Colloidal Crystals with Narrow Diffraction Bandwidth and Highly Sensitive Detection of SCN-

	Centrifugation-Induced Water-Tunable Photonic Colloidal Crystals with Narrow Diffraction Bandwidth and Highly Sensitive Detection of SCN-
	Ma C ; Jiang YN ; Yang XD ; Wang CX ; Li H ; Dong FX ; Yang B ; Yu K ; Lin Q
刊名	acs applied materials & interfaces
	2013
卷号	5 期号:6 页码:1990-1996
关键词	INVERSE-OPAL HYDROGELS IONIC-STRENGTH CHEMICAL SENSORS POLYMER ARRAYS MICROSPHERES HUMIDITY COLORS FILMS NANOPARTICLES
ISSN号	1944-8244
通讯作者	yu k
中文摘要	novel opal hydrogels with water-tunable photonic bandgap (pbg) exhibiting responses to external stimuli were self-assembled from polystyrene-co-poly(n,n-dimethylacrylamide) (ps-co-pdmaa) microspheres. the polymeric microspheres with narrow size distribution were successfully prepared in water, consisting of two regions. the inner region is rich in ps which is hard and hydrophobic; the outer region is rich in pdmaa which is soft and hydrophilic. the self-assembly of the ps-co-pdmaa hydrogel microspheres is ready induced by centrifugation and resulted in highly ordered three-dimensional (3d) photonic colloidal crystals (pccs). with an increase of the amount of water, the pbg of the opal hydrogels shifted from the visible to near-infrared region of the electromagnetic spectrum. the maximum shift of diffraction peak positions could be larger than 500 nm with narrow full width at half maximum (fwhm) in the range of 20 to 40 nm only. the change in color was visible to the naked eye. the remarkable sensitivity to water of the lattice spacing of the opal hydrogels was repeatable after centrifugation. these observations are attributed to a reproducible degree of hydration of the hydrophilic outer region of the polymeric microspheres. furthermore, the diffraction of the opal hydrogels was particularly sensitive to the presence of thiocyanate (scn-) ions. the interaction between scn- ions and dmaa repeat units is argued to block hydrogen bonds between dmaa and water molecules. our ps-co-pdmaa opal hydrogels could be a practical system for diffraction-based detections.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000317031900018
公开日期	2014-04-16
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49960]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Ma C,Jiang YN,Yang XD,et al. Centrifugation-Induced Water-Tunable Photonic Colloidal Crystals with Narrow Diffraction Bandwidth and Highly Sensitive Detection of SCN-[J]. acs applied materials & interfaces,2013,5(6):1990-1996.
APA	Ma C.,Jiang YN.,Yang XD.,Wang CX.,Li H.,...&Lin Q.(2013).Centrifugation-Induced Water-Tunable Photonic Colloidal Crystals with Narrow Diffraction Bandwidth and Highly Sensitive Detection of SCN-.acs applied materials & interfaces,5(6),1990-1996.
MLA	Ma C,et al."Centrifugation-Induced Water-Tunable Photonic Colloidal Crystals with Narrow Diffraction Bandwidth and Highly Sensitive Detection of SCN-".acs applied materials & interfaces 5.6(2013):1990-1996.