Anisotropic Particles from a One‐Pot Double Emulsion Induced by Partial Wetting and Their Triggered Release

Huang, Xiaopeng; Qian, Qiuping; Wang, Yapei

doi:10.1002/smll.201302743

Cited by 45 publications

(43 citation statements)

References 46 publications

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“…[8][9][10][11][12][13] To date, a great many routes have been developed to fabricate JSs, including self-assembly, microfluidics, biphasic electrified jetting, protonation-deprotonation cycling, emulsion polymerization, etc. [14][15][16][17][18][19][20][21][22][23][24] Among them, microfluidic technology as a powerful platform to fabricate JSs with diverse architectures/geometry and versatile functions is vital and efficient because of its simplicity, good repeatability, and high stability. [25][26][27] Especially, the construction of CPCs-derived JSs is particular interest due to their unique optical performance.…”

Section: Introductionmentioning

confidence: 99%

Janus Suprabead Displays Derived from the Modified Photonic Crystals toward Temperature Magnetism and Optics Multiple Responses

Wang

Yang

Yin

et al. 2015

ACS Appl. Mater. Interfaces

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The design and development of Janus suprabeads (JSs) with multiple responses are highly desirable in the fabrication of functional nanomaterials. In this work, we report a triphase microfluidic strategy for the construction of JSs with temperature-magnetism-optics triple responses. Initially, macromonomer poly(methacrylic acid) (PMAA) obtained via catalytic chain transfer polymerization (CCTP) was grafted onto the polystyrene (PS) colloidal photonic crystals (CPCs) surface. Because abundant carboxylic acid groups in PMAA could coordinate cadmium ions for in situ production of fluorescent CdS quantum dots (QDs) after introducing sulfur ions, the as-prepared JSs were endowed with favorable optical properties. Meanwhile, the as-prepared Cd(2+)/PS CPCs were employed as a template to build JSs with temperature-magnetism sensitivity via the introduction of magnetic Fe3O4 and hydrogels. Finally, the fluorescence pattern was easily performed by using chalcogenides as "ink" to write on the pad, in which in situ reaction mechanism was involved in the response. The multiple responsive JSs show promising applications in sensor, display, and anticounterfeit fields.

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Section: Introductionmentioning

confidence: 99%

Janus Suprabead Displays Derived from the Modified Photonic Crystals toward Temperature Magnetism and Optics Multiple Responses

Wang

Yang

Yin

et al. 2015

ACS Appl. Mater. Interfaces

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“…Furthermore, asymmetric particles (such as hemispherical particles) are easier to be taken‐up by the cancer cells, compared to symmetric ones . More importantly, triggered release of anisotropic particles show great potential for the development of smart drug delivery and advanced disease therapy . In this work, the triggered release of loadings (e. g. Rhodamine B (RhB)) inside the engines loaded in the asymmetric microgels was demonstrated by applying NIR light irradiation.…”

Section: Introductionmentioning

confidence: 99%

Controlled Shape Transformation and Loading Release of Smart Hemispherical Hybrid Microgels Triggered by ‘Inner Engines’

Zhu

Wei²,

et al. 2018

ChemistrySelect

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The dynamic controlling and changing the shape of microgels, especially the anisotropic change, remains a challenge for the construction of advanced smart materials. To this end, the fabrication of hemispherical hybrid microgels (HHMs) with Au nanorods(AuNRs)‐based vesicles was demonstrated, with the thermo‐ and NIR light‐triggered anisotropic shape transformation and controlled release induced by ‘inner engines’. AuNRs‐based vesicles acting as ‘inner engines’ were first fabricated by the self‐assembly of thiol‐terminated block copolymers modified AuNRs, with the absorbance of NIR light (808 nm), thus generating heat in the system; second, poly(N‐isopropyl acrylamide) (pNIPAM)‐based HHMs containing AuNRs‐based vesicles were synthesized by the assistance of both microfluidics and photopolymerization. Importantly, uneven heat generated by the gradationally distributed AuNRs‐based vesicles in the hybrid microgels could cause an anisotropic shape change from hemispherical to mushroom‐like shape via external stimuli, with good reversibility and reproducibility. Based on this, the controlled release of loadings (e. g. Rhodamine B (RhB)) inside the engines of the microgels can be realized by combining NIR light irradiation and the shape transformation. Thus, HHMs with AuNRs‐vesicle‐based engines provide a novel platform for the investigation of drug release, artificial actuators, and micromotors.

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“…As a multiphasic mixture system, emulsions typically consist of three main components: oil phase, water phase, and emulsifier [8]. Various emulsifiers, including surfactants [9,10,11,12], polymers [13,14,15,16,17], proteins [18,19,20,21,22,23], and particles [24,25,26,27], have been utilized to prepare different kinds of emulsions. Compared with emulsions stabilized by surfactants, polymers, and proteins, particles stabilized emulsions, which are commonly named Pickering emulsions, enjoy characteristic superiority [2].…”

Section: Introductionmentioning

confidence: 99%

Tuning Amphiphilicity of Particles for Controllable Pickering Emulsion

Wang

2016

Materials

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Pickering emulsions with the use of particles as emulsifiers have been extensively used in scientific research and industrial production due to their edge in biocompatibility and stability compared with traditional emulsions. The control over Pickering emulsion stability and type plays a significant role in these applications. Among the present methods to build controllable Pickering emulsions, tuning the amphiphilicity of particles is comparatively effective and has attracted enormous attention. In this review, we highlight some recent advances in tuning the amphiphilicity of particles for controlling the stability and type of Pickering emulsions. The amphiphilicity of three types of particles including rigid particles, soft particles, and Janus particles are tailored by means of different mechanisms and discussed here in detail. The stabilization-destabilization interconversion and phase inversion of Pickering emulsions have been successfully achieved by changing the surface properties of these particles. This article provides a comprehensive review of controllable Pickering emulsions, which is expected to stimulate inspiration for designing and preparing novel Pickering emulsions, and ultimately directing the preparation of functional materials.

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Anisotropic Particles from a One‐Pot Double Emulsion Induced by Partial Wetting and Their Triggered Release

Cited by 45 publications

References 46 publications

Janus Suprabead Displays Derived from the Modified Photonic Crystals toward Temperature Magnetism and Optics Multiple Responses

Janus Suprabead Displays Derived from the Modified Photonic Crystals toward Temperature Magnetism and Optics Multiple Responses

Controlled Shape Transformation and Loading Release of Smart Hemispherical Hybrid Microgels Triggered by ‘Inner Engines’

Tuning Amphiphilicity of Particles for Controllable Pickering Emulsion

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