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Liu M, Fu J, Yang S. Synthesis of Microparticles with Diverse Thermally Responsive Shapes Originated from the Same Janus Liquid Crystalline Microdroplets. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303106. [PMID: 37495936 DOI: 10.1002/smll.202303106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/14/2023] [Indexed: 07/28/2023]
Abstract
Liquid crystalline elastomer (LCE)-based microparticles that can change shapes in response to external stimuli are of great interest for potential applications such as artificial cells, micro-actuators, micro-valves, and smart drug carriers. Here, the synthesis of LCE microparticles with diverse temperature-dependent anisotropic shapes originated from the same Janus microdroplets is reported. The Janus microdroplets, suspended in an aqueous solution of surfactants, are transformed from microdroplets consisting of a mixture of liquid crystal (LC) monomers, oligomers, silicone oil, and an organic solvent, after the removal of the organic solvent. The molecular alignment of the LC part at the interface, whether planar, homeotropic, or hybrid, is dependent on the choice of the surfactants but not affected by the silicone oil. After polymerization and solvent extraction of the unreacted components, LCE microparticles of various shapes are obtained depending on the concentration and composition of the surfactants, the weight ratio of the LC part to the silicone oil part, and the choice of the extraction solvent. The microparticles that undergo different synthetic pathways show distinct thermally responsive shapes, much like how stem cells differentiate in different environmental conditions.
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Affiliation(s)
- Mingzhu Liu
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Jiemin Fu
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA
| | - Shu Yang
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA
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Zhang Y, Zhang D, Geng Y, He Y, Song P, Wang R. Construction of self-propelled micromotor for "hunting bacteria". Biomater Sci 2023; 11:6775-6780. [PMID: 37695067 DOI: 10.1039/d3bm01175e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
The inherent migration behavior of bacteria has inevitably impacted the advancement of the antibacterial treatment technology. Hunting bacteria, especially those with flagellates, requires self-propelled materials, which could kill bacteria autonomously. Herein, we designed and synthesized a self-propelled micromotor (SPM) tailed with poly(thiazole) to yield bimetallic organic frameworks (BiOFs), in which the assembly of BiOFs are similar to the "Newman projection". The moving speed of the obtained SPM was 238.6 μm s-1 and presented excellent antibacterial activity; more than 90% bacteria were hunted and killed in flowing water. Its minimum inhibitory concentration (MIC) against E. coli and S. aureus was 3.2 and 0.4 mg mL-1, respectively, and its antibacterial activity was still retained after recycling for 5 times. Its antibacterial mechanism along with the contribution of the active units and flow rate was investigated. In summary, a novel self-propelled material for hunting bacteria was synthesized by an unprecedented and efficient strategy. This approach is anticipated to create huge possibilities for its applications in the fields of antibacterial, disinfection, and microdevices.
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Affiliation(s)
- Yaping Zhang
- Key Lab Eco-Functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
| | - Duoxin Zhang
- Key Lab Eco-Functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
| | - Yuanze Geng
- Key Lab Eco-Functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
| | - Yufeng He
- Key Lab Eco-Functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
| | - Pengfei Song
- Key Lab Eco-Functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
| | - Rongmin Wang
- Key Lab Eco-Functional Polymer Materials of MOE, Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
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Qi X, Du Y, Zhang Z, Zhang X. Amphiphilic Bowl-Shaped Janus Particles Prepared via Thiol-Ene Click Reaction for Effective Oil-Water Separation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:455. [PMID: 36770416 PMCID: PMC9921205 DOI: 10.3390/nano13030455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Janus particles for oil-water separation have attracted widespread attention in recent years. Herein, we prepared a bowl-shaped Janus particle that could rapidly separate oil and water through a thiol-ene click reaction and selective etching. Firstly, snowman-like composite microspheres based on silica and mercaptopropyl polysilsesquioxane (SiO2@MPSQ) were prepared by a hydrolytic condensation reaction and phase separation, and the effects of the rotational speed and molar ratios on their microscopic morphologies were investigated. Subsequently, bowl-shaped Janus particles with convex hydrophilic and concave oleophilic surfaces were prepared via a thiol-ene click reaction followed by HF etching. Our amphiphilic bowl-shaped Janus particles could remarkably separate micro-sized oil droplets from an n-heptane-water emulsion with a separation efficiency of >98% within 300 s. Based on the experimental and theoretical results, we proposed the underlying mechanism for the coalescence of oil droplets upon the addition of the amphiphilic bowl-shaped Janus particles.
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Zhang D, Li X, Liang T, Niu S, He Y, Song P, Wang R. Construction of antibacterial fabrics with polymer cationic broccolo‐shaped nanoparticles. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Duoxin Zhang
- Key Laboratory Eco‐Functional Polymer Materials of MOE Institute of Copolymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
| | - Xuemei Li
- Key Laboratory Eco‐Functional Polymer Materials of MOE Institute of Copolymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
| | - Tingyu Liang
- College of Life Science College of Life Science, Northwest Normal University Lanzhou China
| | - Shiquan Niu
- College of Life Science College of Life Science, Northwest Normal University Lanzhou China
| | - Yufeng He
- Key Laboratory Eco‐Functional Polymer Materials of MOE Institute of Copolymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
| | - Pengfei Song
- Key Laboratory Eco‐Functional Polymer Materials of MOE Institute of Copolymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
| | - Rongmin Wang
- Key Laboratory Eco‐Functional Polymer Materials of MOE Institute of Copolymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
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Guo W, Cao P, Dai F, Li Y, Wang R, Song P, He Y. Reversible addition‐fragmentation chain transfer polymerization for fabrication of polymer cations‐adjustable porous materials with excellent antibacterial activity. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Wenling Guo
- Key Lab. Eco‐functional Polymer Materials of MOE Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
| | - Peng Cao
- Key Lab. Eco‐functional Polymer Materials of MOE Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
| | - Fengli Dai
- Key Lab. Eco‐functional Polymer Materials of MOE Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
| | - Yonggang Li
- Key Lab. Eco‐functional Polymer Materials of MOE Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
| | - Rongmin Wang
- Key Lab. Eco‐functional Polymer Materials of MOE Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
| | - Pengfei Song
- Key Lab. Eco‐functional Polymer Materials of MOE Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
| | - Yufeng He
- Key Lab. Eco‐functional Polymer Materials of MOE Institute of Polymer, College of Chemistry & Chemical Engineering, Northwest Normal University Lanzhou China
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Shao S, Man H, Nie Y, Wang Y, Xu Q, Wang Z, Jiang Y. Preparation of fluorescence-encoded microbeads with large encoding capacities and application of suspension array technology. NEW J CHEM 2022. [DOI: 10.1039/d2nj00628f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This research study reported a type of reconstructed polystyrene microbeads for fluorescence encoding in suspension array technology (SAT). The present study improved their surface functionalization and compatibility with dyes.
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Affiliation(s)
- Shimin Shao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Hong Man
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yingrui Nie
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yang Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Qianrui Xu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Zhifei Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yong Jiang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
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Synthesis of non-spherical polymer particles using the activated swelling method. J Colloid Interface Sci 2021; 611:377-389. [PMID: 34971960 DOI: 10.1016/j.jcis.2021.11.082] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 11/09/2021] [Accepted: 11/15/2021] [Indexed: 12/17/2022]
Abstract
The preparation of particles with non-spherical shapes is a challenging endeavor, often requiring a significant ingenuity, complex experimental procedures and difficulties to obtain reproducible results. In this work we prove that monodisperse non-spherical polymer particles possessing asymmetric Janus structure can be easily produced by using an activated swelling method in combination with a control of the rate of free radical polymerization through the addition of the inhibitors 4-methoxyphenol (MEHQ) and O2. Monodisperse non cross-linked polystyrene particles, used as seeds, are activated by the addition of an initiator, which promotes their swelling ability, and then swollen with a monomers mixture (methyl methacrylate, glycidyl methacrylate and ethylene glycol dimethacrylate), before being polymerized in presence of both MEHQ and O2. Our results show that only when both MEHQ and O2 are present during the course of the polymerization, the particles shape can be controlled, from spherical to asymmetrical. A variety of particles shapes can be obtained, ranging from dimpled spheres, flattened spheres and Janus particles by varying the swelling ratio, always with excellent monodispersity and reproducibility. Finally, to provide even more complex functionalities to these non-spherical polymer particles, iron oxide nanocrystals were grown within the polymer matrix resulting in superparamagnetic particles.
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Synthesis of Polymer Nanospheres Conjugated Ce (IV) Complexes for Constructing Double Antibacterial Centers. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-02165-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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A microfluidic synthesis method for preparation and regulation of 3-aminophenol formaldehyde resin spheres. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104973] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Sun H, Lin S, Ng FTT, Mitra SK, Pan Q. Synthesis of Shape-Controllable Anisotropic Microparticles and "Walnut-like" Microparticles via Emulsion Interfacial Polymerization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6007-6015. [PMID: 33938218 DOI: 10.1021/acs.langmuir.1c00589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Anisotropic microparticles have plenty of applications for their asymmetric structure and precisely modified surface. In our research, the uniform anisotropic microparticles with benzyl chloride group were synthesized successfully via emulsion interfacial polymerization. By varying the degree of cross-linking and the concentration of slightly hydrophilic monomer 4-vinyl benzyl chloride (VBC), several types of microparticles with different concavities and different shapes of microparticles (hemisphere, bowl-like, egg-like, etc.) were obtained. Nanoporous microparticles with a walnut-like heterostructure were achieved with modified hydrophilic seeds with the same strategy. The potential applications of shape-controllable fluorescent microparticles and surface modification of microparticles by thiol-click reaction were explored. The modified microparticles achieved in this study are very useful in labeling, tracing, protein separation, and other biomedical fields.
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Affiliation(s)
- Haohong Sun
- College of Chemistry, Chemical Engineering and Material Science, Soochow University, Suzhou 215123, P. R. China
| | - Shaohui Lin
- College of Chemistry, Chemical Engineering and Material Science, Soochow University, Suzhou 215123, P. R. China
| | - Flora T T Ng
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Sushanta K Mitra
- Waterloo Institute for Nanotechnology, Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Qinmin Pan
- College of Chemistry, Chemical Engineering and Material Science, Soochow University, Suzhou 215123, P. R. China
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Duan Y, Zhao X, Sun M, Hao H. Research Advances in the Synthesis, Application, Assembly, and Calculation of Janus Materials. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c04304] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Xia Zhao
- School of Chemical Engineering, Northwest University, Xi’an 710069, Shan xi, China
| | - Miaomiao Sun
- School of Chemical Engineering, Northwest University, Xi’an 710069, Shan xi, China
| | - Hong Hao
- School of Chemical Engineering, Northwest University, Xi’an 710069, Shan xi, China
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