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Peng H, Yu L, Chen G, Xue Z, Liao Y, Zhu J, Xie X, Smalyukh II, Wei Y. Liquid Crystalline Nanocolloids for the Storage of Electro-Optic Responsive Images. ACS APPLIED MATERIALS & INTERFACES 2019; 11:8612-8624. [PMID: 30714369 DOI: 10.1021/acsami.8b22636] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Liquid crystalline nanocolloids (LCNCs), which are nanostructured composites comprising nanoparticles (NPs) and a liquid crystal (LC) host, have attracted a great deal of attention because of their promising new fundamental physical behaviors and functional properties. Yet, it still remains a big challenge to pattern LCNCs into mesoscale-ordered structures due to the limited NP loading in the LC host. Here, we demonstrate LCNCs in the nematic phase with a high NP loading (∼42 wt %) by in situ co-functionalizing the NP with alkyl and mesogenic ligands. The LCNCs can be assembled into ordered structures through holographic photopolymerization-induced phase separation, giving rise to holographic polymer-dispersed nematic nanocolloids (HPDNNC). Interestingly, high diffraction efficiency, low light-scattering loss, and unique electric-switchable capability are realized in the HPDNNC. In addition, high-quality switchable and unclonable colored images are reconstructed, promising a host of advanced applications (e.g., anticounterfeiting). Our findings pave a way to advance the fundamental understanding of nanostructured LCs and their practical utility in enabling a new breed of inorganic-organic composite materials.
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Affiliation(s)
- Haiyan Peng
- Key Lab for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research Center , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
- Sino-US Joint Research Center on Liquid Crystal Chemistry and Physics , HUST and CUB , Wuhan 430074 , China
| | - Lei Yu
- Key Lab for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research Center , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
| | - Guannan Chen
- Key Lab for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research Center , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
| | - Zhigang Xue
- Key Lab for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research Center , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
| | - Yonggui Liao
- Key Lab for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research Center , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
| | - Jintao Zhu
- Key Lab for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research Center , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
| | - Xiaolin Xie
- Key Lab for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research Center , Huazhong University of Science and Technology (HUST) , Wuhan 430074 , China
- Sino-US Joint Research Center on Liquid Crystal Chemistry and Physics , HUST and CUB , Wuhan 430074 , China
| | - Ivan I Smalyukh
- Department of Physics and Materials Science and Engineering Program , University of Colorado at Boulder (CUB) , Boulder , Colorado 80309 , United States
- Sino-US Joint Research Center on Liquid Crystal Chemistry and Physics , HUST and CUB , Wuhan 430074 , China
| | - Yen Wei
- Department of Chemistry , Tsinghua University , Beijing 100084 , China
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Peng H, Yu L, Chen G, Bohl TW, Ye Y, Zhou X, Xue Z, Roy VA, Xie X. Low-voltage-driven and highly-diffractive holographic polymer dispersed liquid crystals with spherical morphology. RSC Adv 2017. [DOI: 10.1039/c7ra08949j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Low-voltage driven and highly diffractive HPDLC gratings were formed by dialing the phase separated microphology through simple LC mixing.
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Affiliation(s)
- Haiyan Peng
- Key Laboratory for Material Chemistry of Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Lei Yu
- Key Laboratory for Material Chemistry of Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Guannan Chen
- Key Laboratory for Material Chemistry of Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Trent William Bohl
- Key Laboratory for Material Chemistry of Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Yunsheng Ye
- Key Laboratory for Material Chemistry of Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Xingping Zhou
- Key Laboratory for Material Chemistry of Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Zhigang Xue
- Key Laboratory for Material Chemistry of Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - V. A. L. Roy
- Department of Physics and Materials Science
- City University of Hong Kong
- Kowloon Tong
- China
| | - Xiaolin Xie
- Key Laboratory for Material Chemistry of Energy Conversion and Storage
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
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Peng H, Chen G, Ni M, Yan Y, Zhuang J, Roy VAL, Li RKY, Xie X. Classical photopolymerization kinetics, exceptional gelation, and improved diffraction efficiency and driving voltage in scaffolding morphological H-PDLCs afforded using a photoinitibitor. Polym Chem 2015. [DOI: 10.1039/c5py01414j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ketyl radical inhibition results in prolonged gelation and an enhanced diffraction efficiency, allowing for the facile fabrication of colored 3D images.
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Affiliation(s)
- Haiyan Peng
- Shenzhen Institutes of Advanced Technology
- Shenzhen 518055
- China
- Department of Physics and Materials Science
- City University of Hong Kong
| | - Guannan Chen
- Key Lab for Large-Format Battery Materials and Systems
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Mingli Ni
- Key Lab for Large-Format Battery Materials and Systems
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Yan Yan
- Department of Physics and Materials Science
- City University of Hong Kong
- China
| | - Jiaqing Zhuang
- Department of Physics and Materials Science
- City University of Hong Kong
- China
| | - V. A. L. Roy
- Department of Physics and Materials Science
- City University of Hong Kong
- China
| | - Robert K. Y. Li
- Department of Physics and Materials Science
- City University of Hong Kong
- China
| | - Xiaolin Xie
- Key Lab for Large-Format Battery Materials and Systems
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
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PENG H, SHI X, LIAO Y, CHEN D, WANG S, XIE X. EFFECTS OF DIFFERENT ALCOHOLS ON PHOTOPOLYMERIZATION KINETICS, ELECTRO-OPTICAL PERFORMANCES OF POLYMER DISPERSED LIQUID CRYSTALS. ACTA POLYM SIN 2012. [DOI: 10.3724/sp.j.1105.2012.11039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Woo JY, Kang YS, Kim BK. Reduction of Volume Shrinkage in Holographic Polymer Dispersed Liquid Crystal Based on Epoxy Containing Polymer Matrices. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20100030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ramsey RA, Sharma SC. Effects of monomer functionality on switchable holographic gratings formed in polymer-dispersed liquid-crystal cells. Chemphyschem 2009; 10:564-70. [PMID: 19156798 DOI: 10.1002/cphc.200800512] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We investigate the effects of monomer functionality on the formation and switching characteristics of holographic transmission gratings in polymer-dispersed liquid-crystal cells fabricated by using the 633 nm wavelength of an He-Ne laser. We present results for the microstructure, diffraction efficiency eta, and switching characteristics of gratings formed with acrylate monomers of functionalities ranging from 2 to 4. The microstructure and diffraction efficiency are sensitive to functionality; both improve with increasing functionality. For functionalities of 2.5 or more, eta approaches 34% and can be switched off with electric fields of about 20 MV m(-1).
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Affiliation(s)
- Robert A Ramsey
- Department of Physics, University of Texas at Arlington, Arlington, TX 76019, USA
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Ma X, Yang Y, Deng K, Zeng Q, Zhao K, Wang C, Bai C. Molecular miscibility characteristics of self-assembled 2D molecular architectures. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b713426f] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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