Color-Tunable Colloidal Crystals from Soft Hydrogel Nanoparticles

Debord, Justin; Eustis, Susie; Debord, Saet Byul; Lofye, M.T.; Lyon, L. Andrew

doi:10.1002/1521-4095(20020503)14:9<658::aid-adma658>3.0.co;2-3

Cited by 223 publications

(203 citation statements)

References 1 publication

Supporting

Mentioning

198

Contrasting

Unclassified

Order By: Relevance

“…In a similar system using N,N ′ -methylene bis(acrylamide) to crosslink the particles, the initial color could be locked in, stabilizing the thermoresponsive behavior over multiple cycles. [ 68 ] Watanabe's group has investigated a range of different opaline hydrogels that respond to changes in temperature and, in certain cases, to specifi c ions. They demonstrated that interconnected sphere arrays exhibited reversible changes in the position of refl ection peaks with temperature, whereas spheres embedded in a hydrogel matrix merely changed peak intensity as the temperature was varied.…”

Section: Temperaturementioning

confidence: 99%

Tunable Colors in Opals and Inverse Opal Photonic Crystals

Aguirre¹,

Reguera²,

Stein

2010

Adv Funct Materials

534

417

View full text Add to dashboard Cite

Colloidal photonic crystals and materials derived from colloidal crystals can exhibit distinct structural colors that result from incomplete photonic band gaps. Through rational materials design, the colors of such photonic crystals can be tuned reversibly by external physical and chemical stimuli. Such stimuli include solvent and dye infi ltration, applied electric or magnetic fi elds, mechanical deformation, light irradiation, temperature changes, changes in pH, and specifi c molecular interactions. Reversible color changes result from alterations in lattice spacings, fi lling fractions, and refractive index of system components. This review article highlights the different systems and mechanisms for achieving tunable color based on opaline materials with closepacked or non-close-packed structural elements and inverse opal photonic crystals. Inorganic and polymeric systems, such as hydrogels, metallopolymers, and elastomers are discussed.

show abstract

Section: Temperaturementioning

confidence: 99%

Tunable Colors in Opals and Inverse Opal Photonic Crystals

Aguirre¹,

Reguera²,

Stein

2010

Adv Funct Materials

534

417

View full text Add to dashboard Cite

show abstract

“…The dramatic response and stimuli-specific behavior makes these materials extremely valuable for numerous applications, [1][2][3][4][5] including drug delivery, [6][7][8][9][10][11] chemical separations, [12,13] sensors, [14][15][16] catalysis, [17] enzyme immobilization, [18] and color-tunable crystals. [19] Several potential applications of these microgels, such as 'smart' actuators, on-off switches, and pulse-release, require a short response time. Currently, numerous strategies are employed to speed up the response kinetics of typical thermo-responsive hydrogel microspheres such as poly(N-isopropylacrylamide) (PNIPAM) microgels.…”

Section: Introductionmentioning

confidence: 99%

Monodisperse Thermoresponsive Microgels with Tunable Volume‐Phase Transition Kinetics

Chu

Kim

Shah

et al. 2007

Adv Funct Materials

152

142

View full text Add to dashboard Cite

A facile method to control the volume‐phase transition kinetics of thermo‐sensitive poly(N‐isopropylacrylamide) (PNIPAM) microgels is presented. Monodisperse PNIPAM microgels with spherical voids are prepared using a microfluidic device. The swelling and shrinking responses of these microgels with spherical voids to changes in temperature are compared with those of voidless microgels of the same size and chemical composition prepared using the same microfluidic device. It is shown that the PNIPAM microgels with voids respond faster to changes in temperature as compared with their voidless counterparts. Also, the induced void structure does not have a detrimental effect on the equilibrium volume change of the microgels. Thus, the volume phase transition kinetics of the microgels can be finely tuned by controlling the number and size of the voids. The flexibility, control, and simplicity in fabrication rendered by this approach make these microgels appealing for applications that range from drug delivery systems and chemical separations to chemical/biosensing and actuators.

show abstract

“…[5,6] Research work on the further application of structure color has also been carried out. [7][8][9][10][11][12][13] For example, Xia [9a] developed a photonics paper/ ink system by embedding 3D colloidal crystals with liquids capable of swelling the elastomer, and the system could serve as a reusable recording medium where no pigments would be required for color display. From a practical point of view there are two main drawbacks that restrict the application of colloidal crystal films.…”

Section: Introductionmentioning

confidence: 99%

Simple Fabrication of Full Color Colloidal Crystal Films with Tough Mechanical Strength

Wang

Wen

et al. 2006

Macro Chemistry & Physics

232

145

View full text Add to dashboard Cite

Summary: Colloidal crystal films with a special FCC structure and tough mechanical strength were simply fabricated using latex spheres with a hard PS core and an elastometric PMMA/PAA shell. The monodispersed latex spheres were prepared in one step without any further purification procedure. Distinguished from conventional colloidal crystal films by a bicontinuous FCC structure, the film was fully dense with separate air space, which can greatly improve the mechanical strength of the film. Furthermore, films with brilliant and monochromatic colors covering the entire visible region were fabricated by controlling the diameters of the assembled latex spheres (see Figure). Such a simple method for fabricating PBG tunable colloidal crystal films with tough mechanical strength would have wide applications in many fields, such as optical devices and decorative materials. magnified image

show abstract

Color-Tunable Colloidal Crystals from Soft Hydrogel Nanoparticles

Cited by 223 publications

References 1 publication

Tunable Colors in Opals and Inverse Opal Photonic Crystals

Tunable Colors in Opals and Inverse Opal Photonic Crystals

Monodisperse Thermoresponsive Microgels with Tunable Volume‐Phase Transition Kinetics

Simple Fabrication of Full Color Colloidal Crystal Films with Tough Mechanical Strength

Contact Info

Product

Resources

About