Azo Polymer Microspheres with Photo‐Manipulated Surface and Topographic Structure

Zhou, Xinran; Du, Yi; Wang, Xiaogong

doi:10.1002/macp.201500435

Cited by 12 publications

(8 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The isolated IA‐Chol microspheres were fabricated by the solution dispersion method . In the process, a suitable amount of IA‐Chol was dissolved in anhydrous dichloromethane (DCM) and then the solution was quickly added into a poly(vinyl alcohol) aqueous solution (5 wt%) under moderate stirring.…”

Section: Resultsmentioning

confidence: 99%

“…Ultrapure water (resistivity > 18.0 MΩ cm) was obtained from a Milli‐Q water purification system. IA‐Chol was synthesized by the method reported in the previous article, and the isolated IA‐Chol microspheres were fabricated by the solution dispersion method . PS latex particles for preparing the soft‐lithographic masters were synthesized through the suspension polymerization and the IA‐Chol microsphere monolayers were prepared by soft‐lithographic duplication .…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Symmetry‐Breaking Response of Azo Molecular Glass Microspheres to Interfering Circularly Polarized Light: From Shape Manipulation to 3D Patterning

Hsu

Wang

2018

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

This work investigates symmetry-breaking deformation of azo molecular glass microspheres induced by interfering circularly polarized light, and related particle shape manipulation as well as 3D patterning. The isolated microspheres and microsphere monolayers are obtained from an azo molecular glass (IA-Chol) by the solution dispersion method and soft-lithography, respectively. Unique symmetry-breaking deformation is observed for the microspheres upon exposure to the spatially modulated light field, which is produced by interference of two orthogonally polarized laser beams with the right-circular polarization (RCP) and left-circular polarization (LCP). Two distinct deformation modes are developed upon the irradiation with the interfering beams in RCP:LCP and LCP:RCP superposition manners, respectively. The unique morphologies with the symmetry-breaking characteristics are caused by mass transfer induced by the light irradiation. For the microsphere monolayers, the deformations of the microspheres not only capture and record the polarization states of the light field, but also create various surface patterns combining the symmetry-breaking deformations and periodic surface modulation. A variety of unique surface patterns are obtained by irradiation with the interfering circularly polarized waves with the orthogonal and also the same-handed polarizations. The material and methodology developed in this study are promising for applications in sensing, optics, responsive surfaces, and others.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201806703. dichroism (CD) spectroscopy, [4,5] quantumbased optical computing and information processing, [6,7] and all-optical magnetic recording with circularly polarized light, [8] to unmentioned others. As conventional semiconductors lack intrinsic chirality, the handedness of CPL cannot be distinguished and directly detected by ordinary photodetectors. Recently, materials and devices with selective responses to the handedness, such as chiral organic semiconductor transistor, chiral plasmonic metamaterials, and others, [9,10] have been developed for the CPL detection. Compared with conventional methods such as temporal modulation, ellipsometry, and others requiring specific optical set-ups, [11] the approaches based on the newly developed materials show advantages of being highly compatible with various photonic platforms without additional optical elements. Despite the wide-spread use of CPL and interest in its interaction with matter, it has scarcely been reported to use nonchiral material through shape deformation of the substances to capture and store the chirality of the electromagnetic wave. Distinct from the available usages and studies, such a research will not only supply a new method to distinctly detect polarization states of CPL through microscopic observations, but also pave a way toward shape manipulation and three-dimensional (3D) surface patterning with the light.In recent years, photoinduced mass...

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Symmetry‐Breaking Response of Azo Molecular Glass Microspheres to Interfering Circularly Polarized Light: From Shape Manipulation to 3D Patterning

Hsu

Wang

2018

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…SRG have mainly been inscribed on planar surface, but a few examples show also that mass transport can take place at the surface of colloidal particles , or along the length of an azopolymer nanotube …”

Section: Motion From Photochromic Molecular Switchesmentioning

confidence: 99%

“…SRG have mainly been inscribed on planar surface, but a few examples show also that mass transport can take place at the surface of colloidal particles 531,532 or along the length of an azopolymer nanotube. 533 The main part of the available literature about SRG deals with azobenzene derivatives, as already discussed, 335,384,519,534,535 but b i s a z o b e n z e n e d e r i v a t i v e s h a v e a l s o b e e n r eported.…”

Section: Chemical Reviewsmentioning

confidence: 99%

Design of Collective Motions from Synthetic Molecular Switches, Rotors, and Motors

et al. 2019

View full text Add to dashboard Cite

Precise control over molecular movement is of fundamental and practical importance in physics, biology, and chemistry. At nanoscale, the peculiar functioning principles and the synthesis of individual molecular actuators and machines has been the subject of intense investigations and debates over the past 60 years. In this review, we focus on the design of collective motions that are achieved by integrating, in space and time, several or many of these individual mechanical units together. In particular, we provide an in-depth look at the intermolecular couplings used to physically connect a number of artificial mechanically active molecular units such as photochromic molecular switches, nanomachines based on mechanical bonds, molecular rotors, and light-powered rotary motors. We highlight the various functioning principles that can lead to their collective motion at various length scales. We also emphasize how their synchronized, or desynchronized, mechanical behavior can lead to emerging functional properties and to their implementation into new active devices and materials.

show abstract

“…It is not surprising that the development of antimicrobial polymer materials or the incorporation of antimicrobials into polymer matrices represents an active research area . Numerous literature results show that encapsulation in a polymeric matrix can help to enhance the effectiveness of antimicrobial agents already available, by reducing their residual toxicity and prolonging their lifetime . In the biomedical field one of the most important reason for medical treatment failure is the infections associated with biomaterial devices .…”

Section: Introductionmentioning

confidence: 99%

Controlled release mechanisms of sodium benzoate from a biodegradable polymer and halloysite nanotube composite

et al. 2016

View full text Add to dashboard Cite

Multiscale polymeric composites combining a biodegradable matrix with low cost and biocompatible hybrid nanocarriers promise to supply a new generation of multipurpose devices for drug delivery. The aim of this work was to investigate the release mechanisms of sodium benzoate (NaBz) from halloysite nanotubes (HNTs) embedded in a biodegradable polymer matrix (poly(ϵ-caprolactone)). To that purpose, different amounts of NaBz molecules were successfully incorporated into HNTs using a simple environmentally friendly procedure. The resulting HNT-NaBz nano-hybrids were then incorporated into a poly(ϵ-caprolactone) matrix by high energy ball milling at ambient temperature and in dry conditions. Analysis of the resulting composites showed important effects of the HNT-NaBz nano-hybrids on the thermal and mechanical properties. Controlled drug release, followed by UV spectrophotometry, was also found to be dependent on the HNT-NaBz relative fractions. Experimental data were thus analyzed using a modified Gallagher − Corrigan model and correlated with the nano-hybrid morphologies. © 2016 Society of Chemical Industry. © 2016 Society of Chemical Industr

show abstract

Azo Polymer Microspheres with Photo‐Manipulated Surface and Topographic Structure

Cited by 12 publications

References 45 publications

Symmetry‐Breaking Response of Azo Molecular Glass Microspheres to Interfering Circularly Polarized Light: From Shape Manipulation to 3D Patterning

Symmetry‐Breaking Response of Azo Molecular Glass Microspheres to Interfering Circularly Polarized Light: From Shape Manipulation to 3D Patterning

Design of Collective Motions from Synthetic Molecular Switches, Rotors, and Motors

Controlled release mechanisms of sodium benzoate from a biodegradable polymer and halloysite nanotube composite

Contact Info

Product

Resources

About