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Liao J, Feng Y, Zhang J, Li H, Zhou G. Asymmetric chiral disazo dopants with high anisotropy for versatile modulation of liquid crystal optics. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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2
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Pang J, Gao Z, Tan H, Mao X, Xu J, Kong J, Hu X. Fabrication, Investigation, and Application of Light-Responsive Self-Assembled Nanoparticles. Front Chem 2019; 7:620. [PMID: 31572711 PMCID: PMC6751253 DOI: 10.3389/fchem.2019.00620] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 08/28/2019] [Indexed: 12/24/2022] Open
Abstract
Light-responsive materials have attracted increasing interest in recent years on account of their adjustable on-off properties upon specific light. In consideration of reversible isomerization transition for azobenzene (AZO), it was designed as a light-responsive domain for nanoparticles in this research. At the same time, the interaction between AZO domain and β-cyclodextrin (β-CD) domain was designed as a driving force to assemble nanoparticles, which was fabricated by two polymers containing AZO domain and β-CD domain, respectively. The formed nanoparticles were confirmed by Dynamic Light Scattering (DLS) results and Transmission Electron Microscope (TEM) images. An obvious two-phase structure was formed in which the outer layer of nanoparticles was composed of PCD polymer, as verified by 1HNMR spectroscopy. The efficient and effective light response of the nanoparticles, including quick responsive time, controllable and gradual recovered process and good fatigue resistance, was confirmed by UV-Vis spectroscopy. The size of the nanoparticle could be adjusted by polymer ratio and light irradiation, which was ascribed to its light-response property. Nanoparticles had irreversibly pH dependent characteristics. In order to explore its application as a nanocarrier, drug loading and in vitro release profile in different environment were investigated through control of stimuli including light or pH value. Folic acid (FA), as a kind of target fluorescent molecule with specific protein-binding property, was functionalized onto nanoparticles for precise delivery for anticancer drugs. Preliminary in vitro cell culture results confirmed efficient and effective curative effect for the nanocarrier on MCF-7 cells.
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Affiliation(s)
- Juan Pang
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Ziyu Gao
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Huaping Tan
- Biomaterials for Organogenesis Laboratory, School of Materials Science & Engineering, Nanjing University of Science & Technology, Nanjing, China
| | - Xincheng Mao
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Jialing Xu
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Jingyang Kong
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Xiaohong Hu
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
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Kim DY, Jeong KU. Light responsive liquid crystal soft matters: structures, properties, and applications. LIQUID CRYSTALS TODAY 2019. [DOI: 10.1080/1358314x.2019.1653588] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Dae-Yoon Kim
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Kwang-Un Jeong
- Department of Polymer-Nano Science and Technology, Chonbuk National University, Jeonbuk, Korea
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Pang J, Gao Z, Tan H, Mao X, Wang H, Hu X. Design, Synthesis, Investigation, and Application of a Macromolecule Photoswitch. Front Chem 2019; 7:86. [PMID: 30873401 PMCID: PMC6403147 DOI: 10.3389/fchem.2019.00086] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 01/31/2019] [Indexed: 11/18/2022] Open
Abstract
Azobenzene (AZO) has attracted increasing interest due to its reversible structural change upon a light stimulus. However, poor fatigue durability and the photobleaching phenomenon restricts its further application. Herein, the AZO domain as a pendent group, was incorporated into copolymers, which was synthesized by radical copolymerization in the research. Structure-properties of synthesized copolymer can be adjusted by monomer ratios. Emphatically, responsive properties of copolymer in different solutions were investigated. In the DMSO solution, copolymer exhibited effective structural change, stable rapid responsive time (1 min) upon UV light at room temperature, stable relative acceptable recovery time (100 min) upon white light at room temperature, and good fatigue resistance property. In an aqueous solution, even more controllable responsive properties and fatigue resistance properties for copolymer were verified by results. More pervasively, the recovery process could be controlled by light density and temperature. In order to clarify reasons for the difference between the AZO molecule and the AZO domain of copolymer, energy barrier or interactions between single atoms or even structural units was calculated using the density functional theory (DFT). Furthermore, the status of copolymer was characterized by dynamic light scattering (DLS) and transmission electron microscope (TEM). Finally, copolymer was further functionalized with bioactive protein (concanavalin, ConA) to reduce the cytotoxicity of the AZO molecule.
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Affiliation(s)
- Juan Pang
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Ziyu Gao
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Huaping Tan
- Biomaterials for Organogenesis Laboratory, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, China
| | - Xincheng Mao
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Huiming Wang
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Xiaohong Hu
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
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Pang J, Gao Z, Zhang L, Wang H, Hu X. Synthesis and Characterization of Photoresponsive Macromolecule for Biomedical Application. Front Chem 2018; 6:217. [PMID: 30013963 PMCID: PMC6036227 DOI: 10.3389/fchem.2018.00217] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 05/25/2018] [Indexed: 01/28/2023] Open
Abstract
Azobenzene, a photo switcher, has attracted increasing interest due to its structural response to photo stimulus in the field of information science and chemical sensing in the recent decades. However, limited water solubility and cytotoxicity restrained their applications in the biomedical field. In research, HA-AZO has been designed as a water soluble photo switcher in biomedical application. Synthesized HA-AZO had good water-solubility and a stable π-π* transition absorbance peak trans-isomer. With exposure to UV, transformation from trans-isomer to cis-isomer of HA-AZO could be realized according to UV spectra. Reversely, trans-isomer could be gradually recovered from cis-isomer in the dark. Simultaneously, quick response and slow recovery could be detected in the process of structural change. Moreover, repeated illumination was further used to detect the antifatigue property of HA-AZO, which showed no sign of fatigue during 20 circles. The influence of pH value on UV spectrum for HA-AZO was investigated in the work. Importantly, in acid solution, HA-AZO no longer showed any photoresponsive property. Additionally, the status of HA-AZO under the effect of UV light was investigated by DLS results and TEM image. Finally, in vitro cytotoxicity evaluations were performed to show the effects of photoresponsive macromolecule on cells.
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Affiliation(s)
- Juan Pang
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Ziyu Gao
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Long Zhang
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Huiming Wang
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
| | - Xiaohong Hu
- School of Material Engineering, Jinling Institute of Technology, Nanjing, China
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Synthesis and Characterization of Photo-Responsive Thermotropic Liquid Crystals Based on Azobenzene. CRYSTALS 2018. [DOI: 10.3390/cryst8040147] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of new thermotropic liquid crystals (LCs) containing azobenzene units was synthesized. The structures of the compounds were characterized by means of NMR and FTIR spectroscopy. Their mesomorphic behaviors were investigated via differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). Based on the POM and DSC measurements, the optical properties of the Razo-ester were tested using UV-vis spectroscopy. The azobenzene side chain displayed a strong ability to influence the formation of thermotropic LCs.
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Zhao D, Qiu Y, Cheng W, Bi S, Wang H, Wang Q, Liao Y, Peng H, Xie X. Precisely Tuning Helical Twisting Power via Photoisomerization Kinetics of Dopants in Chiral Nematic Liquid Crystals. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:700-708. [PMID: 29268613 DOI: 10.1021/acs.langmuir.7b03786] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
It has been paid much attention to improve the helical twisting power (β) of dopants in chiral nematic liquid crystals (CLCs); however, the correlations between the β value and the molecular structures as well as the interaction with nematic LCs are far from clear. In this work, a series of reversibly photo-switchable axially chiral dopants with different lengths of alkyl or alkoxyl substituent groups have been successfully synthesized through nucleophilic substitution and the thiol-ene click reaction. Then, the effect of miscibility between these dopants and nematic LCs on the β values, as well as the time-dependent decay/growth of the β values upon irradiations, has been investigated. The theoretical Teas solubility parameter shows that the miscibility between dopants and nematic LCs decreases with increasing of the length of substituent groups from dopant 1 to dopant 4. The β value of chiral dopants in nematic LCs decreases from dopant 1 to dopant 4 both at the visible light photostationary state (PSS) and at the UV PSS after UV irradiation. With increasing of the length of substituent groups, the photoisomerization rate constant of dopants increases for trans-cis transformation upon UV irradiation and decreases for the reverse process upon visible light irradiation either in isotropic ethyl acetate or in anisotropic LCs, although the constant in ethyl acetate is several times larger than the corresponding value in LCs. Also, the color of the CLCs could be tuned upon light irradiations. These results enable the precise tuning of the pitch and selective reflection wavelength/color of CLCs, which paves the way to the applications in electro-optic devices, information storage, high-tech anticounterfeit, and so forth.
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Affiliation(s)
| | | | | | - Shuguang Bi
- Hubei Biomass Fibers and Eco-dyeing & Finishing Key Laboratory, College of Chemistry and Chemical Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University , Wuhan 430073, China
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Kim DY, Lee SA, Jung D, Koo J, Soo Kim J, Yu YT, Lee CR, Jeong KU. Topochemical polymerization of dumbbell-shaped diacetylene monomers: relationship between chemical structure, molecular packing structure, and gelation property. SOFT MATTER 2017; 13:5759-5766. [PMID: 28761944 DOI: 10.1039/c7sm01166k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Herein, we have synthesized novel photopolymerizable dumbbell-shaped diacetylene liquid crystal (LC) monomers by locating a diacetylene dicarboxylic acid group at the center and chemically connecting swallow-tails, such as hydrophobic alkyl chains (abbreviated as AT3DI) and amphiphilic biphenyl mesogens (abbreviated as BP3DI), with bisamide groups. Major phase transitions of dumbbell-shaped diacetylene monomers were identified using differential scanning calorimetry (DSC), polarized optical microscopy (POM), and Fourier transform infrared spectroscopy (FT IR). Molecular packing structures were studied based on structure-sensitive wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS) analyses. Mainly, due to nanophase separations and strong intermolecular hydrogen bonding, AT3DI formed a low-ordered lamellar LC phase at room temperature. BP3DI self-assembled into highly-ordered crystal phases (K1 and K2) at lower temperatures below a low-ordered lamellar LC phase, in which BP3DI were intercalated with each other to compensate the mutual volume differences. From the photopolymerization of AT3DI and BP3DI, it was realized that the topochemical reactions of dumbbell-shaped diacetylene monomers were closely related to their chemical structures as well as molecular packing structures.
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Affiliation(s)
- Dae-Yoon Kim
- BK21 Plus Haptic Polymer Composite Research Team & Department of Polymer-Nano Science and Technology, Chonbuk National University, Jeonju 54896, Korea.
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A dual stimuli-responsive amphiphilic polymer: reversible self-assembly and rate-controlled drug release. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4156-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Kim DY, Nah C, Kang SW, Lee SH, Lee KM, White TJ, Jeong KU. Free-Standing and Circular-Polarizing Chirophotonic Crystal Reflectors: Photopolymerization of Helical Nanostructures. ACS NANO 2016; 10:9570-9576. [PMID: 27643819 DOI: 10.1021/acsnano.6b04949] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The preparation of materials exhibiting structural colors has been intensively studied in biomimetic science and technology. Utilizing a newly synthesized cholesteric liquid-crystal (CLC) monomer (abbreviated as BP1CRM), we have prepared CLC films. Photoinitiated copolymerization of this monomer with a common achiral liquid-crystalline monomer produced free-standing films with homogeneous and nanoscale pitch distributions. Employing the thermal sensitivity of the CLC monomer, chirophotonic crystal reflectors were prepared exhibiting a range of colors. The free-standing and circular-polarizing chirophotonic crystal films maintain excellent thermal, mechanical, and chemical stabilities, and the composition can readily be applied as polarized optical films and smart paints.
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Affiliation(s)
| | | | | | | | - Kyung Min Lee
- U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base , Ohio 45433-7750, United States
| | - Timothy J White
- U.S. Air Force Research Laboratory, Wright-Patterson Air Force Base , Ohio 45433-7750, United States
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Choi YJ, Kim DY, Park M, Yoon WJ, Lee Y, Hwang JK, Chiang YW, Kuo SW, Hsu CH, Jeong KU. Self-Assembled Hierarchical Superstructures from the Benzene-1,3,5-Tricarboxamide Supramolecules for the Fabrication of Remote-Controllable Actuating and Rewritable Films. ACS APPLIED MATERIALS & INTERFACES 2016; 8:9490-9498. [PMID: 27020653 DOI: 10.1021/acsami.6b03364] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The well-defined hierarchical superstructures constructed by the self-assembly of programmed supramolecules can be organized for the fabrication of remote-controllable actuating and rewritable films. To realize this concept, we newly designed and synthesized a benzene-1,3,5-tricarboxamide (BTA) derivative (abbreviated as BTA-3AZO) containing photoresponsive azobenzene (AZO) mesogens on the periphery of the BTA core. BTA-3AZO was first self-assembled to nanocolumns mainly driven by the intermolecular hydrogen-bonds between BTA cores, and these self-assembled nanocolumns were further self-organized laterally to form the low-ordered hexagonal columnar liquid crystal (LC) phase below the isotropization temperature. Upon cooling, a lamello-columnar crystal phase emerged at room temperature via a highly ordered lamello-columnar LC phase. The three-dimensional (3D) organogel networks consisted of fibrous and lamellar superstructures were fabricated in the BTA-3AZO cyclohexane-methanol solutions. By tuning the wavelength of light, the shape and color of the 3D networked thin films were remote-controlled by the conformational changes of azobenzene moieties in the BTA-3AZO. The demonstrations of remote-controllable 3D actuating and rewritable films with the self-assembled hierarchical BTA-3AZO thin films can be stepping stones for the advanced flexible optoelectronic devices.
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Affiliation(s)
- Yu-Jin Choi
- Polymer Materials Fusion Research Center & Department of Polymer-Nano Science and Technology, Chonbuk National University , Jeonju 561-756, Korea
| | - Dae-Yoon Kim
- Polymer Materials Fusion Research Center & Department of Polymer-Nano Science and Technology, Chonbuk National University , Jeonju 561-756, Korea
| | - Minwook Park
- Polymer Materials Fusion Research Center & Department of Polymer-Nano Science and Technology, Chonbuk National University , Jeonju 561-756, Korea
| | - Won-Jin Yoon
- Polymer Materials Fusion Research Center & Department of Polymer-Nano Science and Technology, Chonbuk National University , Jeonju 561-756, Korea
| | - Yumin Lee
- Polymer Materials Fusion Research Center & Department of Polymer-Nano Science and Technology, Chonbuk National University , Jeonju 561-756, Korea
| | - Joo-Kyoung Hwang
- Polymer Materials Fusion Research Center & Department of Polymer-Nano Science and Technology, Chonbuk National University , Jeonju 561-756, Korea
| | - Yeo-Wan Chiang
- Department of Materials Science and Optoelectronic Engineering, National Sun Yat-Sen University , Kaohsiung 804, Taiwan
| | - Shiao-Wei Kuo
- Department of Materials Science and Optoelectronic Engineering, National Sun Yat-Sen University , Kaohsiung 804, Taiwan
| | - Chih-Hao Hsu
- Department of Polymer Science, The University of Akron , Akron, Ohio 44325-3909, United States
| | - Kwang-Un Jeong
- Polymer Materials Fusion Research Center & Department of Polymer-Nano Science and Technology, Chonbuk National University , Jeonju 561-756, Korea
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Im P, Kang DG, Kim DY, Choi YJ, Yoon WJ, Lee MH, Lee IH, Lee CR, Jeong KU. Flexible and Patterned Thin Film Polarizer: Photopolymerization of Perylene-based Lyotropic Chromonic Reactive Mesogens. ACS APPLIED MATERIALS & INTERFACES 2016; 8:762-771. [PMID: 26616135 DOI: 10.1021/acsami.5b09995] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A perylene-based reactive mesogen (DAPDI) forming a lyotropic chromonic liquid crystal (LCLC) phase was newly designed and synthesized for the fabrication of macroscopically oriented and patterned thin film polarizer (TFP) on the flexible polymer substrates. The anisotropic optical property and molecular self-assembly of DAPDI were investigated by the combination of microscopic, scattering and spectroscopic techniques. The main driving forces of molecular self-assembly were the face-to-face π-π intermolecular interaction among aromatic cores and the nanophase separation between hydrophilic ionic groups and hydrophobic aromatic cores. Degree of polarization for the macroscopically oriented and photopolymerized DAPDI TFP was estimated to be 99.81% at the λmax = 491 nm. After mechanically shearing the DAPDI LCLC aqueous solution on the flexible polymer substrates, we successfully fabricated the patterned DAPDI TFP by etching the unpolymerized regions selectively blocked by a photomask during the photopolymerization process. Chemical and mechanical stabilities were confirmed by the solvent and pencil hardness tests, and its surface morphology was further investigated by optical microscopy, atomic force microscopy, and three-dimensional surface nanoprofiler. The flexible and patterned DAPDI TFP with robust chemical and mechanical stabilities can be a stepping stone for the advanced flexible optoelectronic devices.
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Affiliation(s)
- Pureun Im
- Polymer Materials Fusion Research Center, Department of Polymer-Nano Science and Technology & Department of Flexible and Printable Electronics, Chonbuk National University , Jeonju, Jeonbuk 561-756, Korea
| | - Dong-Gue Kang
- Polymer Materials Fusion Research Center, Department of Polymer-Nano Science and Technology & Department of Flexible and Printable Electronics, Chonbuk National University , Jeonju, Jeonbuk 561-756, Korea
| | - Dae-Yoon Kim
- Polymer Materials Fusion Research Center, Department of Polymer-Nano Science and Technology & Department of Flexible and Printable Electronics, Chonbuk National University , Jeonju, Jeonbuk 561-756, Korea
| | - Yu-Jin Choi
- Polymer Materials Fusion Research Center, Department of Polymer-Nano Science and Technology & Department of Flexible and Printable Electronics, Chonbuk National University , Jeonju, Jeonbuk 561-756, Korea
| | - Won-Jin Yoon
- Polymer Materials Fusion Research Center, Department of Polymer-Nano Science and Technology & Department of Flexible and Printable Electronics, Chonbuk National University , Jeonju, Jeonbuk 561-756, Korea
| | - Myong-Hoon Lee
- Polymer Materials Fusion Research Center, Department of Polymer-Nano Science and Technology & Department of Flexible and Printable Electronics, Chonbuk National University , Jeonju, Jeonbuk 561-756, Korea
| | - In-Hwan Lee
- Division of Advanced Materials Engineering, Chonbuk National University , Jeonju, Jeonbuk 561-756, Korea
| | - Cheul-Ro Lee
- Division of Advanced Materials Engineering, Chonbuk National University , Jeonju, Jeonbuk 561-756, Korea
| | - Kwang-Un Jeong
- Polymer Materials Fusion Research Center, Department of Polymer-Nano Science and Technology & Department of Flexible and Printable Electronics, Chonbuk National University , Jeonju, Jeonbuk 561-756, Korea
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Kim DY, Kang DG, Lee MH, Kim JS, Lee CR, Jeong KU. A photo-responsive metallomesogen for an optically and electrically tunable polarized light modulator. Chem Commun (Camb) 2016; 52:12821-12824. [DOI: 10.1039/c6cc06901k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A palladium(ii)-based metallomesogen containing the photo-responsive azobenzene was newly synthesized and was demonstrated to be an optically and electrically tunable polarized light modulator.
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Affiliation(s)
- Dae-Yoon Kim
- Department of Polymer-Nano Science and Technology & Department of Flexible and Printable Electronics
- Chonbuk National University
- Jeonju
- Korea
| | - Dong-Gue Kang
- Department of Polymer-Nano Science and Technology & Department of Flexible and Printable Electronics
- Chonbuk National University
- Jeonju
- Korea
| | - Myong-Hoon Lee
- Department of Polymer-Nano Science and Technology & Department of Flexible and Printable Electronics
- Chonbuk National University
- Jeonju
- Korea
| | - Jin-Soo Kim
- Division of Advanced Materials Engineering
- Chonbuk National University
- Jeonju
- Korea
| | - Cheul-Ro Lee
- Division of Advanced Materials Engineering
- Chonbuk National University
- Jeonju
- Korea
| | - Kwang-Un Jeong
- Department of Polymer-Nano Science and Technology & Department of Flexible and Printable Electronics
- Chonbuk National University
- Jeonju
- Korea
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Kim DY, Kang DG, Shin S, Choi TL, Jeong KU. Hierarchical superstructures of norbornene-based polymers depending on dendronized side-chains. Polym Chem 2016. [DOI: 10.1039/c6py01286h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
For understanding the self-assembly behaviours of norbornene-based main-chain polymers depending on side-chain pendants, a series of polynorbornenes containing the programmed dendrons is newly designed and successfully synthesized via ring opening metathesis polymerization.
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Affiliation(s)
- Dae-Yoon Kim
- BK21 Plus Haptic Polymer Composite Research Team & Department of Polymer-Nano Science and Technology
- Chonbuk National University
- Jeonju
- Korea
| | - Dong-Gue Kang
- BK21 Plus Haptic Polymer Composite Research Team & Department of Polymer-Nano Science and Technology
- Chonbuk National University
- Jeonju
- Korea
| | - Suyong Shin
- Department of Chemistry
- Seoul National University
- Seoul 08826
- Korea
| | - Tae-Lim Choi
- Department of Chemistry
- Seoul National University
- Seoul 08826
- Korea
| | - Kwang-Un Jeong
- BK21 Plus Haptic Polymer Composite Research Team & Department of Polymer-Nano Science and Technology
- Chonbuk National University
- Jeonju
- Korea
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Kim DY, Lee SA, Kim H, Min Kim S, Kim N, Jeong KU. An azobenzene-based photochromic liquid crystalline amphiphile for a remote-controllable light shutter. Chem Commun (Camb) 2015; 51:11080-3. [DOI: 10.1039/c5cc02834e] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
By considering intramolecular conformations and intermolecular interactions, a photochromic liquid crystalline amphiphile is synthesized for a remote-controllable light shutter.
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Affiliation(s)
- Dae-Yoon Kim
- Polymer Materials Fusion Research Center & Department of Polymer-Nano Science and Technology
- Chonbuk National University
- Jeonju
- Korea
| | - Sang-A Lee
- Polymer Materials Fusion Research Center & Department of Polymer-Nano Science and Technology
- Chonbuk National University
- Jeonju
- Korea
| | - Huisu Kim
- Polymer Materials Fusion Research Center & Department of Polymer-Nano Science and Technology
- Chonbuk National University
- Jeonju
- Korea
| | - Soo Min Kim
- Soft Innovative Materials Research Center
- Institute of Advanced Composite Materials
- Korea Institute of Science and Technology
- Jeollabuk-do
- Republic of Korea
| | - Namil Kim
- Smart Materials R&D Center
- Korea Automotive Technology Institute
- Cheonan
- Korea
| | - Kwang-Un Jeong
- Polymer Materials Fusion Research Center & Department of Polymer-Nano Science and Technology
- Chonbuk National University
- Jeonju
- Korea
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