1
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Malotke F, Thiele T, Gutmann JS, Giese M. Direct Digital Photonic Patterning of Hydrogen-Bonded Cholesteric Liquid-Crystalline Films. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37917042 DOI: 10.1021/acsami.3c10684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
A modular tool box for photoresponsive cholesteric liquid crystals based on hydrogen-bonded assemblies is reported. By employing 3-azopyridines as photoswitch in cholesteric liquid-crystalline thin films, a fast and reversible blue shift is observed upon irradiation, allowing tuning of the structural color over the whole visible electromagnetic spectrum. Investigations of the materials via X-ray diffraction studies indicate that the blue shift is attributed to the photoinduced destruction of smectic clusters in the cholesteric phase, resulting in a contraction of the helical structure. Unprecedently, the use of a stereolithography 3D printer (SLA) allowed direct transfer of digital information into a multicolor photonic pattern, an important step toward photonic imaging and data storage.
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Affiliation(s)
- Florian Malotke
- University of Duisburg-Essen, Universitätsstr. 7, 45141 Essen, Germany
| | - Tobias Thiele
- University of Duisburg-Essen, Universitätsstr. 7, 45141 Essen, Germany
| | - Jochen S Gutmann
- University of Duisburg-Essen, Universitätsstr. 7, 45141 Essen, Germany
| | - Michael Giese
- University of Duisburg-Essen, Universitätsstr. 7, 45141 Essen, Germany
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2
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Zhao J, Yu R, Wu L, Li Y, Liu W, Yang Y. A PSCLC Pattern Prepared Based on Handedness Inversion for Anti-counterfeiting. Chem Asian J 2023; 18:e202300636. [PMID: 37606182 DOI: 10.1002/asia.202300636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 08/23/2023]
Abstract
Handedness inversion has been widely studied in supramolecular chemistry and material sciences. Herein, a photoisomerizable chiral dopant was synthesized, which could induce the formation of a cholesteric phase with right-handedness. The Bragg reflection band of the cholesteric liquid crystal (CLC) mixture shifted to the long wavelength with extending 365 nm UV light irradiation time. Based on this photochromic property, a colourful polymer-stabilized CLC (PSCLC) film was prepared using a grayscale mask. A handedness reversible CLC mixture was prepared using a mixture of this chiral dopant and S5011. With extending the UV light irradiation time, the handedness of the CLC mixture changed from right- to left-handedness. A patterned PSCLC film was prepared using this CLC mixture. Complementary images were observed under right- and left-handedness circularly polarized lights. The results shown here not only give us a better understanding the competition between photopolymerization and photoisomerization, but also lay the foundations for decoration and anti-counterfeiting.
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Affiliation(s)
- Jinghua Zhao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Runwei Yu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Limin Wu
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu Province, P. R. China
| | - Yi Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Wei Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yonggang Yang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
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3
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Boychuk A, Shibaev V, Cigl M, Hamplová V, Novotná V, Bobrovsky A. Large Thermally Irreversible Photoinduced Shift of Selective Light Reflection in Hydrazone-Containing Cholesteric Polymer Systems. Chemphyschem 2023:e202300011. [PMID: 36861819 DOI: 10.1002/cphc.202300011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/25/2023] [Accepted: 03/01/2023] [Indexed: 03/03/2023]
Abstract
Stimuli responsive liquid crystalline polymers are a unique class of so-called "smart" materials demonstrating various types of mesomorphic structures easily controlled by external fields, including light. In the present work we synthesized and studied a comb-shaped hydrazone-containing copolyacrylate exhibited cholesteric liquid crystalline properties with the pitch length of the helix being tuned under irradiation with light. In the cholesteric phase selective light reflection in the near IR spectral range (1650 nm) was measured and a large blue shift of the reflection peak from 1650 nm to 500 nm was found under blue light (428 or 457 nm) irradiation. This shift is related to the Z-E isomerization of photochromic hydrazone-containing groups and it is photochemically reversible. The improved and faster photo-optical response was found after copolymer doping with 10 wt % of low-molar-mass liquid crystal. It is noteworthy that both, the E and Z isomers of hydrazone photochromic group are thermally stable that enable to achieve a pure photoinduced switch without any dark relaxation at any temperatures. The large photoinduced shift of the selective light reflection, together with thermal bistability, makes such systems promising for applications in photonics.
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Affiliation(s)
- Artem Boychuk
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory, Moscow, 119991, Russia
| | - Valery Shibaev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory, Moscow, 119991, Russia
| | - Martin Cigl
- Institute of Physics of the Czech Academy of Sciences, 1999/2 Na Slovance, 182 20, Prague 8, Czech Republic
| | - Vĕra Hamplová
- Institute of Physics of the Czech Academy of Sciences, 1999/2 Na Slovance, 182 20, Prague 8, Czech Republic
| | - Vladimíra Novotná
- Institute of Physics of the Czech Academy of Sciences, 1999/2 Na Slovance, 182 20, Prague 8, Czech Republic
| | - Alexey Bobrovsky
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory, Moscow, 119991, Russia
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4
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Lan R, Bao J, Huang R, Wang Z, Zhang L, Shen C, Wang Q, Yang H. Amplifying Molecular Scale Rotary Motion: The Marriage of Overcrowded Alkene Molecular Motor with Liquid Crystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2109800. [PMID: 35732437 DOI: 10.1002/adma.202109800] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 05/29/2022] [Indexed: 06/15/2023]
Abstract
Design and fabrication of macroscopic functional devices by molecular engineering is an emerging and effective strategy in exploration of advanced materials. Photoresponsive overcrowded alkene-based molecular motor (OAMM) is considered as one of the most promising molecular machines due to the unique rotary motion driven by light with high temporal and spatial precision. Amplifying the molecular rotary motions into macroscopic behaviors of photodirected systems links the molecular dynamics with macroscopic motions of materials, providing new opportunities to design novel materials and devices with a bottom-up strategy. In this review, recent developments of the light-responsive liquid crystal system triggered by OAMM will be summarized. The mechanism of amplification effect of liquid crystal matrix will be introduced first. Then progress of the OAMM-driven liquid crystal materials will be described including light-controlled photonic crystals, texture-tunable liquid crystal coating and microspheres, photoactuated soft robots, and dynamic optical devices. It is hoped that this review provides inspirations in design and exploration of light-driven soft matters and novel functional materials from molecular engineering to structural modification.
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Affiliation(s)
- Ruochen Lan
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Jinying Bao
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Rui Huang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Zizheng Wang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Lanying Zhang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, 100871, P. R. China
| | - Chen Shen
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Qian Wang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Huai Yang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, 100871, P. R. China
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5
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Astam MO, Zhan Y, Slot TK, Liu D. Active Surfaces Formed in Liquid Crystal Polymer Networks. ACS APPLIED MATERIALS & INTERFACES 2022; 14:22697-22705. [PMID: 35142206 PMCID: PMC9136844 DOI: 10.1021/acsami.1c21024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
There is an increasing interest in animating materials to develop dynamic surfaces. These dynamic surfaces can be utilized for advanced applications, including switchable wetting, friction, and lubrication. Dynamic surfaces can also improve existing technologies, for example, by integrating self-cleaning surfaces on solar cells. In this Spotlight on Applications, we describe our most recent advances in liquid crystal polymer network (LCN) dynamic surfaces, focusing on substrate-based topographies and dynamic porous networks. We discuss our latest insights in the mechanisms of deformation with the "free volume" principle. We illustrate the scope of LCN technology through various examples of photo-/electropatterning, free-volume channeling, oscillating/programmable network distortion, and porous LCNs. Finally, we close by discussing prominent applications of LCNs and their outlook.
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Affiliation(s)
- Mert O. Astam
- Laboratory
of Stimuli-Responsive Functional Materials and Devices (SFD), Department
of Chemical Engineering and Chemistry, Eindhoven
University of Technology, Groene Loper 3, Eindhoven AE 5612, The Netherlands
- Institute
for Complex Molecular Systems (ICMS), Eindhoven
University of Technology, Groene Loper 3, Eindhoven AE 5612, The Netherlands
| | - Yuanyuan Zhan
- Laboratory
of Stimuli-Responsive Functional Materials and Devices (SFD), Department
of Chemical Engineering and Chemistry, Eindhoven
University of Technology, Groene Loper 3, Eindhoven AE 5612, The Netherlands
- Institute
for Complex Molecular Systems (ICMS), Eindhoven
University of Technology, Groene Loper 3, Eindhoven AE 5612, The Netherlands
| | - Thierry K. Slot
- Laboratory
of Stimuli-Responsive Functional Materials and Devices (SFD), Department
of Chemical Engineering and Chemistry, Eindhoven
University of Technology, Groene Loper 3, Eindhoven AE 5612, The Netherlands
- Institute
for Complex Molecular Systems (ICMS), Eindhoven
University of Technology, Groene Loper 3, Eindhoven AE 5612, The Netherlands
| | - Danqing Liu
- Laboratory
of Stimuli-Responsive Functional Materials and Devices (SFD), Department
of Chemical Engineering and Chemistry, Eindhoven
University of Technology, Groene Loper 3, Eindhoven AE 5612, The Netherlands
- Institute
for Complex Molecular Systems (ICMS), Eindhoven
University of Technology, Groene Loper 3, Eindhoven AE 5612, The Netherlands
- SCNU-TUE
Joint Lab of Device Integrated Responsive Materials (DIRM), National
Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, P. R. China
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6
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Zhang YS, Wang ZQ, Chuang WC, Jiang SA, Mo TS, Lin JD, Lee CR. Programmable Engineering of Sunlight-Fueled, Full-Wavelength-Tunable, and Chirality-Invertible Helical Superstructures. ACS APPLIED MATERIALS & INTERFACES 2021; 13:55550-55558. [PMID: 34761914 DOI: 10.1021/acsami.1c16655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Dynamic control of motion at the molecular level is a core issue in promoting the bottom-up programmable modulation of sophisticated self-organized superstructures. Self-assembled artificial nanoarchitectures through subtle noncovalent interactions are indispensable for diverse applications. Here, the active solar renewable energy is used to harness cholesteric liquid crystal (CLC) superstructure devices via delicate control of the dynamic equilibrium between the concentrations of molecular motor molecules with opposite handedness. Thus, the spectral position and handedness of a photonic superstructure can be tuned continuously, bidirectionally, and reversibly within the entire working spectrum (from near-ultraviolet to the thermal infrared region, over 2 μm). With these unique horizons, three advanced photoresponsive chiroptical devices, namely, a mirrorless laser, an optical vortex generator, and an encrypted contactless photorewritable board, are successfully demonstrated. The sunlight-fueled chirality inversion prompts facile switching of functionalities, such as free-space optical communication, stereoscopic display technology, and spin-to-orbital angular momentum conversion. Motor-based chiroptic devices with dynamic and versatility controllability, fast response, ecofriendly characteristics, stability, and high efficiency have potential to replace the traditional elements with static functions. The inexhaustible natural power provides a promising means for outdoor-use optics and nanophotonics.
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Affiliation(s)
- Yan-Song Zhang
- Department of Photonics, National Cheng Kung University, Tainan 701401, Taiwan
| | - Zhi-Qun Wang
- Department of Photonics, National Cheng Kung University, Tainan 701401, Taiwan
| | - Wei-Cheng Chuang
- Department of Photonics, National Cheng Kung University, Tainan 701401, Taiwan
| | - Shun-An Jiang
- Department of Photonics, National Cheng Kung University, Tainan 701401, Taiwan
| | - Ting-Shan Mo
- Department of Materials Engineering, Kun Shan University of Technology, Tainan 710303, Taiwan
| | - Jia-De Lin
- Department of Opto-Electronic Engineering, National Dong Hwa University, Hualien 974301, Taiwan
| | - Chia-Rong Lee
- Department of Photonics, National Cheng Kung University, Tainan 701401, Taiwan
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7
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Wang L, Urbas AM, Li Q. Nature-Inspired Emerging Chiral Liquid Crystal Nanostructures: From Molecular Self-Assembly to DNA Mesophase and Nanocolloids. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1801335. [PMID: 30160812 DOI: 10.1002/adma.201801335] [Citation(s) in RCA: 160] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/17/2018] [Indexed: 05/22/2023]
Abstract
Liquid crystals (LCs) are omnipresent in living matter, whose chirality is an elegant and distinct feature in certain plant tissues, the cuticles of crabs, beetles, arthropods, and beyond. Taking inspiration from nature, researchers have recently devoted extensive efforts toward developing chiral liquid crystalline materials with self-organized nanostructures and exploring their potential applications in diverse fields ranging from dynamic photonics to energy and safety issues. In this review, an account on the state of the art of emerging chiral liquid crystalline nanostructured materials and their technological applications is provided. First, an overview on the significance of chiral liquid crystalline architectures in various living systems is given. Then, the recent significant progress in different chiral liquid crystalline systems including thermotropic LCs (cholesteric LCs, cubic blue phases, achiral bent-core LCs, etc.) and lyotropic LCs (DNA LCs, nanocellulose LCs, and graphene oxide LCs) is showcased. The review concludes with a perspective on the future scope, opportunities, and challenges in these truly advanced functional soft materials and their promising applications.
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Affiliation(s)
- Ling Wang
- Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH, 44242, USA
| | - Augustine M Urbas
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, OH, 45433, USA
| | - Quan Li
- Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH, 44242, USA
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8
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Zheng ZG, Lu YQ, Li Q. Photoprogrammable Mesogenic Soft Helical Architectures: A Promising Avenue toward Future Chiro-Optics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905318. [PMID: 32483915 DOI: 10.1002/adma.201905318] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 06/11/2023]
Abstract
Mesogenic soft materials, having single or multiple mesogen moieties per molecule, commonly exhibit typical self-organization characteristics, which promotes the formation of elegant helical superstructures or supramolecular assemblies in chiral environments. Such helical superstructures play key roles in the propagation of circularly polarized light and display optical properties with prominent handedness, that is, chiro-optical properties. The leveraging of light to program the chiro-optical properties of such mesogenic helical soft materials by homogeneously dispersing photosensitive chiral material into an achiral soft system or covalently connecting photochromic moieties to the molecules has attracted considerable attention in terms of materials, properties, and potential applications and has been a thriving topic in both fundamental science and application engineering. State-of-the-art technologies are described in terms of the material design, synthesis, properties, and modulation of photoprogrammable chiro-optical mesogenic soft helical architectures. Additionally, the scientific issues and technical problems that hinder further development of these materials for use in various fields are outlined and discussed. Such photoprogrammable mesogenic soft helical materials are competitive candidates for use in stimulus-controllable chiro-optical devices with high optical efficiency, stable optical properties, and easy miniaturization, facilitating the future integration and systemization of chiro-optical chips in photonics, photochemistry, biomedical engineering, chemical engineering, and beyond.
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Affiliation(s)
- Zhi-Gang Zheng
- Department of Physics, East China University of Science and Technology, Shanghai, 200237, China
| | - Yan-Qing Lu
- National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Manipulation, Collaborative Innovation Center of Advanced Microstructures and College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China
| | - Quan Li
- Advanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH, 44242, USA
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9
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Kurosaki Y, Sagisaka T, Matsushima T, Ubukata T, Yokoyama Y. Chiral, Thermally Irreversible and Quasi-Stealth Photochromic Dopant to Control Selective Reflection Wavelength of Cholesteric Liquid Crystal. Chemphyschem 2020; 21:1375-1383. [PMID: 32374514 DOI: 10.1002/cphc.202000309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/05/2020] [Indexed: 11/10/2022]
Abstract
A chiral and thermally irreversible photochromic fulgide derivative incorporating an (R)-binaphthol unit in its acid anhydride moiety was used for the photoswitching of the pitch length of cholesteric liquid crystals. Since the absorption maximum wavelengths of both thermally stable photoisomers are nearly in the UV region (quasi-stealth photochromism), it can be exposed to visible light without inducing photochromic reactions. Therefore, when the photoswitching molecule is added to a permanent cholesteric liquid crystal whose reflection light wavelength is in the visible region, the UV light-induced photochromic reaction of the photoswitching molecule changes the wavelength of the reflection light in the visible light region. We have succeeded in regulating the color of cholesteric liquid crystalline cells between red and blue upon UV light irradiation. Attempts to introduce this system in polymer dispersed cholesteric liquid crystals are also described.
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Affiliation(s)
- Yoshihisa Kurosaki
- Department of Advanced Materials Chemistry Graduate School of Engineering Science, Yokohama National University Tokiwadai, Hodogaya, Yokohama, 240-8501, Japan
| | - Toshiya Sagisaka
- Department of Advanced Materials Chemistry Graduate School of Engineering Science, Yokohama National University Tokiwadai, Hodogaya, Yokohama, 240-8501, Japan
| | - Tomoo Matsushima
- Department of Advanced Materials Chemistry Graduate School of Engineering Science, Yokohama National University Tokiwadai, Hodogaya, Yokohama, 240-8501, Japan
| | - Takashi Ubukata
- Department of Advanced Materials Chemistry Graduate School of Engineering Science, Yokohama National University Tokiwadai, Hodogaya, Yokohama, 240-8501, Japan
| | - Yasushi Yokoyama
- Department of Advanced Materials Chemistry Graduate School of Engineering Science, Yokohama National University Tokiwadai, Hodogaya, Yokohama, 240-8501, Japan
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10
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Moulin E, Faour L, Carmona‐Vargas CC, Giuseppone N. From Molecular Machines to Stimuli‐Responsive Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1906036. [PMID: 31833132 DOI: 10.1002/adma.201906036] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 10/18/2019] [Indexed: 05/12/2023]
Affiliation(s)
- Emilie Moulin
- SAMS Research Group, Institut Charles Sadron, CNRS‐UPR 22University of Strasbourg 23 rue du Loess, BP 84047 Strasbourg 67034 Cedex 2 France
| | - Lara Faour
- SAMS Research Group, Institut Charles Sadron, CNRS‐UPR 22University of Strasbourg 23 rue du Loess, BP 84047 Strasbourg 67034 Cedex 2 France
| | - Christian C. Carmona‐Vargas
- SAMS Research Group, Institut Charles Sadron, CNRS‐UPR 22University of Strasbourg 23 rue du Loess, BP 84047 Strasbourg 67034 Cedex 2 France
| | - Nicolas Giuseppone
- SAMS Research Group, Institut Charles Sadron, CNRS‐UPR 22University of Strasbourg 23 rue du Loess, BP 84047 Strasbourg 67034 Cedex 2 France
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11
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Miyagi K, Teramoto Y. Elucidation of the Mechanism of Stress-Induced Circular Dichroic Inversion of Cellulosic/Polymer Liquid Crystalline Composites. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02741] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuma Miyagi
- Department of Applied Life Science, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yoshikuni Teramoto
- Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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12
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Chattaraj KG, Paul R, Paul S. Switching of Self-Assembly to Solvent-Assisted Assembly of Molecular Motor: Unveiling the Mechanisms of Dynamic Control on Solvent Exchange. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:1773-1792. [PMID: 32024360 DOI: 10.1021/acs.langmuir.9b03718] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Natural biological molecular motors are capable of performing several biological functions, such as fuel production, mobility, transport, and many other dynamic features. Inspired by these biological motors, scientists effectively synthesized artificial molecular motors to mimic several biological functionalities. Several molecular systems, from sensitive materials to molecular motors, are essential for controlling dynamic processes in larger assemblies. In this work, we discuss the self-assembly of molecular motors in water and how this self-assembly switches to the solvent-assisted assembly as solvent changes to a water-THF (tetrahydrofuran) mixture. We present an elaborate description of the morphological changes of molecular motor assemblies from pure water to a water-THF mixture to pure THF. Under the influence of THF solvent, molecular motors form an assembled structure by taking a sufficient number of THF molecules in between themselves, resulting in an assembled molecular motor with a softened core. So, molecular motor assembly swells in the water-THF mixture, and in pure water, it shrinks. This solvent-assisted assembled structure has a specific shape. We have confirmed this assembly as a solvent-assisted assembly with the help of molecular dynamics simulation and quantum chemical analysis. Molecular motor-THF and THF-THF interactions are the main responsible interactions for solvent-assisted assembly over self-assembly. This work is a perfect example of conversion between self-assembly (shrinking) and solvent-assisted assembly (swelling) of molecular motors by adding THF into water or vice versa. A spectacular check on the shrinking and swelling by merely altering solvents illustrates so many intriguing possibilities for an alteration of dynamic processes at the nanoscale.
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Affiliation(s)
| | - Rabindranath Paul
- Department of Chemistry , Indian Institute of Technology , Guwahati , Assam 781039 , India
| | - Sandip Paul
- Department of Chemistry , Indian Institute of Technology , Guwahati , Assam 781039 , India
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13
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Reorientation behavior in the helical motility of light-responsive spiral droplets. Nat Commun 2019; 10:5238. [PMID: 31748502 PMCID: PMC6868138 DOI: 10.1038/s41467-019-13201-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 10/25/2019] [Indexed: 01/07/2023] Open
Abstract
The physico-chemical processes supporting life's purposeful movement remain essentially unknown. Self-propelling chiral droplets offer a minimalistic model of swimming cells and, in surfactant-rich water, droplets of chiral nematic liquid crystals follow the threads of a screw. We demonstrate that the geometry of their trajectory is determined by both the number of turns in, and the handedness of, their spiral organization. Using molecular motors as photo-invertible chiral dopants allows converting between right-handed and left-handed trajectories dynamically, and droplets subjected to such an inversion reorient in a direction that is also encoded by the number of spiral turns. This motile behavior stems from dynamic transmission of chirality, from the artificial molecular motors to the liquid crystal in confinement and eventually to the helical trajectory, in analogy with the chirality-operated motion and reorientation of swimming cells and unicellular organisms.
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14
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15
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Kim Y, Tamaoki N. Photoresponsive Chiral Dopants: Light‐Driven Helicity Manipulation in Cholesteric Liquid Crystals for Optical and Mechanical Functions. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900034] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuna Kim
- Research Institute for Electronic ScienceHokkaido University N-20, W-10, Kita-Ku, Sapporo Hokkaido 001-0020 JAPAN
| | - Nobuyuki Tamaoki
- Research Institute for Electronic ScienceHokkaido University N-20, W-10, Kita-Ku, Sapporo Hokkaido 001-0020 JAPAN
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16
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Chen J, Vachon J, Feringa BL. Design, Synthesis, and Isomerization Studies of Light-Driven Molecular Motors for Single Molecular Imaging. J Org Chem 2018; 83:6025-6034. [PMID: 29741383 PMCID: PMC5987184 DOI: 10.1021/acs.joc.8b00654] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
![]()
The
design of a multicomponent system that aims at the direct visualization
of a synthetic rotary motor at the single molecule level on surfaces
is presented. The synthesis of two functional motors enabling photochemical
rotation and fluorescent detection is described. The light-driven
molecular motor is found to operate in the presence of a fluorescent
tag if a rigid long rod (32 Å) is installed between both photoactive
moieties. The photochemical isomerization and subsequent thermal helix
inversion steps are confirmed by 1H NMR and UV–vis
absorption spectroscopies. In addition, the tetra-acid functioned
motor can be successfully grafted onto amine-coated quartz and it
is shown that the light responsive rotary motion on surfaces is preserved.
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Affiliation(s)
- Jiawen Chen
- Stratingh Institute for Chemistry , University of Groningen , Nijenborgh 4 , 9747AG Groningen , The Netherlands
| | - Jérôme Vachon
- Stratingh Institute for Chemistry , University of Groningen , Nijenborgh 4 , 9747AG Groningen , The Netherlands
| | - Ben L Feringa
- Stratingh Institute for Chemistry , University of Groningen , Nijenborgh 4 , 9747AG Groningen , The Netherlands
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17
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Siriwardane DA, Kulikov O, Batchelor BL, Liu Z, Cue JM, Nielsen SO, Novak BM. UV- and Thermo-Controllable Azobenzene-Decorated Polycarbodiimide Molecular Springs. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00679] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Dumindika A. Siriwardane
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Oleg Kulikov
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, United States
| | - Benjamin L. Batchelor
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Zhiwei Liu
- Department of Chemistry and Biochemistry, University of the Sciences, 600 South 43rd Street, Philadelphia, Pennsylvania 19104, United States
| | - John Michael Cue
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Steven O. Nielsen
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Bruce M. Novak
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
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18
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Light-activated helical inversion in cholesteric liquid crystal microdroplets. Proc Natl Acad Sci U S A 2018; 115:4334-4339. [PMID: 29626129 DOI: 10.1073/pnas.1720742115] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Cholesteric liquid crystal (CLC) droplets exhibit nontrivial topological features, which are controlled by the ratio between the cholesteric pitch and the droplet radius. The radial spherical structure (RSS) is of particular interest, as it reveals an onion-like concentric organization of the cholesteric helices, leading to the expression of spherical Bragg microcavities. Using an overcrowded alkene-based unidirectional molecular motor as a dopant, we show that the topological defect structure in the droplet can be activated by illumination. By using appropriate molecular motor concentrations, light can either break the symmetry of topological defects (as observed for the bent-twisted bipolar structure), or it can induce inversion of handedness in an onion-like organization (in the case of RSS). This latter feature may pave the way toward alternative activation modes of lasers based on cholesteric droplets. By also studying CLC droplets once they have reached full photoconversion at photostationary state (PSS), we highlight that the strong influence of confinement on the droplets structure occurs to the same extent after the helix inversion event. Our results are interpreted in terms of numerical simulations of the droplets' structure, which shed light on the major role played by curvature close to the droplets' center, this latter one becoming dominant when the droplet radius is small.
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19
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Orlova T, Lancia F, Loussert C, Iamsaard S, Katsonis N, Brasselet E. Revolving supramolecular chiral structures powered by light in nanomotor-doped liquid crystals. NATURE NANOTECHNOLOGY 2018; 13:304-308. [PMID: 29434262 DOI: 10.1038/s41565-017-0059-x] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 12/20/2017] [Indexed: 05/20/2023]
Abstract
Molecular machines operated by light have been recently shown to be able to produce oriented motion at the molecular scale1,2 as well as do macroscopic work when embedded in supramolecular structures3-5. However, any supramolecular movement irremediably ceases as soon as the concentration of the interconverting molecular motors or switches reaches a photo-stationary state6,7. To circumvent this limitation, researchers have typically relied on establishing oscillating illumination conditions-either by modulating the source intensity8,9 or by using bespoke illumination arrangements10-13. In contrast, here we report a supramolecular system in which the emergence of oscillating patterns is encoded at the molecular level. Our system comprises chiral liquid crystal structures that revolve continuously when illuminated, under the action of embedded light-driven molecular motors. The rotation at the supramolecular level is sustained by the diffusion of the motors away from a localized illumination area. Above a critical irradiation power, we observe a spontaneous symmetry breaking that dictates the directionality of the supramolecular rotation. The interplay between the twist of the supramolecular structure and the diffusion 14 of the chiral molecular motors creates continuous, regular and unidirectional rotation of the liquid crystal structure under non-equilibrium conditions.
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Affiliation(s)
| | - Federico Lancia
- Bio-inspired and Smart Materials, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands
| | | | - Supitchaya Iamsaard
- Bio-inspired and Smart Materials, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands
| | - Nathalie Katsonis
- Bio-inspired and Smart Materials, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands.
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20
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Chirality and stereoselectivity in photochromic reactions. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2018. [DOI: 10.1016/j.jphotochemrev.2017.12.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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21
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Sun J, Lan R, Gao Y, Wang M, Zhang W, Wang L, Zhang L, Yang Z, Yang H. Stimuli-Directed Dynamic Reconfiguration in Self-Organized Helical Superstructures Enabled by Chemical Kinetics of Chiral Molecular Motors. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1700613. [PMID: 29619309 PMCID: PMC5827101 DOI: 10.1002/advs.201700613] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 10/11/2017] [Indexed: 05/23/2023]
Abstract
Dynamic controllability of self-organized helical superstructures in spatial dimensions is a key step to promote bottom-up artificial nanoarchitectures and functional devices for diverse applications in a variety of areas. Here, a light-driven chiral overcrowded alkene molecular motor with rod-like substituent is designed and synthesized, and its thermal isomerization reaction exhibits an increasing structural entropy effect on chemical kinetic analysis in anisotropic achiral liquid crystal host than that in isotropic organic liquid. Interestingly, the stimuli-directed angular orientation motion of helical axes in the self-organized helical superstructures doped with the chiral motors enables the dynamic reconfiguration between the planar (thermostationary) and focal conic (photostationary) states. The reversible micromorphology deformation processes are compatible with the free energy fluctuation of self-organized helical superstructures and the chemical kinetics of chiral motors under different conditions. Furthermore, stimuli-directed reversible nonmechanical beam steering is achieved in dynamic hidden periodic photopatterns with reconfigurable attributes prerecorded with a corresponding photomask and photoinduced polymerization.
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Affiliation(s)
- Jian Sun
- Department of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083P. R. China
| | - Ruochen Lan
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
| | - Yanzi Gao
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
| | - Meng Wang
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
| | - Wanshu Zhang
- Department of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083P. R. China
| | - Ling Wang
- Artie McFerrin Department of Chemical EngineeringTexas A&M UniversityCollege StationTX77843USA
| | - Lanying Zhang
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
- Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationPeking UniversityBeijing100871P. R. China
| | - Zhou Yang
- Department of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083P. R. China
| | - Huai Yang
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
- Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationPeking UniversityBeijing100871P. R. China
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22
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Huang H, Orlova T, Matt B, Katsonis N. Long‐Lived Supramolecular Helices Promoted by Fluorinated Photoswitches. Macromol Rapid Commun 2017; 39. [DOI: 10.1002/marc.201700387] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 08/01/2017] [Indexed: 11/08/2022]
Affiliation(s)
- He Huang
- Bio‐inspired and Smart MaterialsMESA+ Institute for NanotechnologyUniversity of Twente P.O. Box 217 7500 AE Enschede The Netherlands
| | - Tetiana Orlova
- Bio‐inspired and Smart MaterialsMESA+ Institute for NanotechnologyUniversity of Twente P.O. Box 217 7500 AE Enschede The Netherlands
| | - Benjamin Matt
- Bio‐inspired and Smart MaterialsMESA+ Institute for NanotechnologyUniversity of Twente P.O. Box 217 7500 AE Enschede The Netherlands
| | - Nathalie Katsonis
- Bio‐inspired and Smart MaterialsMESA+ Institute for NanotechnologyUniversity of Twente P.O. Box 217 7500 AE Enschede The Netherlands
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23
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Yu L, Sun J, Wang Q, Guan Y, Zhou L, Zhang J, Zhang L, Yang H. Reprogrammable Assembly of Molecular Motor on Solid Surfaces via Dynamic Bonds. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1700480. [PMID: 28437027 DOI: 10.1002/smll.201700480] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 03/05/2017] [Indexed: 06/07/2023]
Abstract
Controllable assembly of molecular motors on solid surfaces is a fundamental issue for providing them to perform physical tasks. However, it can hardly be achieved by most previous methods due to their inherent limitations. Here, a general strategy is designed for the reprogrammable assembly of molecular motors on solid surfaces based on dynamic bonds. In this method, molecular motors with disulfide bonds can be remotely, reversibly, and precisely attached to solid surfaces with disulfide bonds, regardless of their chemical composition and microstructure. More importantly, it not only allows encoding geometric information referring to a pattern of molecular motors, but also enables erasing and re-encoding of geometric information via hemolytic photocleavage and recombination of disulfide bonds. Thus, solid surfaces can be regarded as "computer hardware", where molecular motors can be reformatted and reprogramed as geometric information.
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Affiliation(s)
- Li Yu
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Jian Sun
- Department of Materials Science and Engineering, University of Science and Technology, Beijing, 100083, China
| | - Qian Wang
- School of Chemistry and Environment, Beihang University, Beijing, 100191, China
| | - Yan Guan
- College of Chemistry and Engineering, Peking University, Beijing, 100871, China
| | - Le Zhou
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Jingxuan Zhang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Lanying Zhang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Huai Yang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China
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24
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Bisoyi HK, Li Q. Light-Driven Liquid Crystalline Materials: From Photo-Induced Phase Transitions and Property Modulations to Applications. Chem Rev 2016; 116:15089-15166. [PMID: 27936632 DOI: 10.1021/acs.chemrev.6b00415] [Citation(s) in RCA: 407] [Impact Index Per Article: 50.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Light-driven phenomena both in living systems and nonliving materials have enabled truly fascinating and incredible dynamic architectures with terrific forms and functions. Recently, liquid crystalline materials endowed with photoresponsive capability have emerged as enticing systems. In this Review, we focus on the developments of light-driven liquid crystalline materials containing photochromic components over the past decade. Design and synthesis of photochromic liquid crystals (LCs), photoinduced phase transitions in LC, and photoalignment and photoorientation of LCs have been covered. Photomodulation of pitch, polarization, lattice constant and handedness inversion of chiral LCs is discussed. Light-driven phenomena and properties of liquid crystalline polymers, elastomers, and networks have also been analyzed. The applications of photoinduced phase transitions, photoalignment, photomodulation of chiral LCs, and photomobile polymers have been highlighted wherever appropriate. The combination of photochromism, liquid crystallinity, and fabrication techniques has enabled some fascinating functional materials which can be driven by ultraviolet, visible, and infrared light irradiation. Nanoscale particles have been incorporated to widen and diversify the scope of the light-driven liquid crystalline materials. The developed materials possess huge potential for applications in optics, photonics, adaptive materials, nanotechnology, etc. The challenges and opportunities in this area are discussed at the end of the Review.
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Affiliation(s)
- Hari Krishna Bisoyi
- Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University , Kent, Ohio 44242, United States
| | - Quan Li
- Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University , Kent, Ohio 44242, United States
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25
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Ryabchun A, Raguzin I, Stumpe J, Shibaev V, Bobrovsky A. Cholesteric Polymer Scaffolds Filled with Azobenzene-Containing Nematic Mixture with Phototunable Optical Properties. ACS APPLIED MATERIALS & INTERFACES 2016; 8:27227-27235. [PMID: 27633069 DOI: 10.1021/acsami.6b09642] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The past two decades witnessed tremendous progress in the field of creation of different types of responsive materials. Cholesteric polymer networks present a very promising class of smart materials due to the combination of the unique optical properties of cholesteric mesophase and high mechanical properties of polymer networks. In the present work we demonstrate the possibility of fast and reversible photocontrol of the optical properties of cholesteric polymer networks. Several cholesteric photopolymerizable mixtures are prepared, and porous cholesteric network films with different helix pitches are produced by polymerization of these mixtures. An effective and simple method of the introduction of photochromic azobenzene-containing nematic mixture capable of isothermal photoinducing the nematic-isotropic phase transition into the porous polymer matrix is developed. It is found that cross-linking density and degree of polymer network filling with a photochromic nematic mixture strongly influence the photo-optical behavior of the obtained composite films. In particular, the densely cross-linked films are characterized by a decrease in selective light reflection bandwidth, whereas weakly cross-linked systems display two processes: the shift of selective light reflection peak and decrease of its width. It is noteworthy that the obtained cholesteric materials are shown to be very promising for the variety applications in optoelectronics and photonics.
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Affiliation(s)
- Alexander Ryabchun
- Fraunhofer Institute for Applied Polymer Research , Geiselbergstrasse 69, 14476 Potsdam-Golm, Germany
- Chemistry Department, Moscow State University , Lenin Hills 1, 119991 Moscow, Russia
| | - Ivan Raguzin
- Leibniz Institute of Polymer Research , Hohe Strasse 6, 01069 Dresden, Germany
| | - Joachim Stumpe
- University of Potsdam , Am Mühlenberg 11, 14476 Potsdam, Germany
| | - Valery Shibaev
- Chemistry Department, Moscow State University , Lenin Hills 1, 119991 Moscow, Russia
| | - Alexey Bobrovsky
- Chemistry Department, Moscow State University , Lenin Hills 1, 119991 Moscow, Russia
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26
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Bisoyi HK, Li Q. Light‐Directed Dynamic Chirality Inversion in Functional Self‐Organized Helical Superstructures. Angew Chem Int Ed Engl 2016; 55:2994-3010. [DOI: 10.1002/anie.201505520] [Citation(s) in RCA: 190] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 08/10/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Hari Krishna Bisoyi
- Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent State University Kent OH 44242 USA
| | - Quan Li
- Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent State University Kent OH 44242 USA
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27
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Bisoyi HK, Li Q. Lichtgesteuerte dynamische Chiralitätsumkehr in funktionalen selbstorganisierten helikalen Überstrukturen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201505520] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hari Krishna Bisoyi
- Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent State University Kent OH 44242 USA
| | - Quan Li
- Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent State University Kent OH 44242 USA
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28
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Aβhoff SJ, Sukas S, Yamaguchi T, Hommersom CA, Le Gac S, Katsonis N. Superstructures of chiral nematic microspheres as all-optical switchable distributors of light. Sci Rep 2015; 5:14183. [PMID: 26400584 PMCID: PMC4585848 DOI: 10.1038/srep14183] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 08/20/2015] [Indexed: 11/09/2022] Open
Abstract
Light technology is based on generating, detecting and controlling the wavelength, polarization and direction of light. Emerging applications range from electronics and telecommunication to health, defence and security. In particular, data transmission and communication technologies are currently asking for increasingly complex and fast devices, and therefore there is a growing interest in materials that can be used to transmit light and also to control the distribution of light in space and time. Here, we design chiral nematic microspheres whose shape enables them to reflect light of different wavelengths and handedness in all directions. Assembled in organized hexagonal superstructures, these microspheres of well-defined sizes communicate optically with high selectivity for the colour and chirality of light. Importantly, when the microspheres are doped with photo-responsive molecular switches, their chiroptical communication can be tuned, both gradually in wavelength and reversibly in polarization. Since the kinetics of the "on" and "off" switching can be adjusted by molecular engineering of the dopants and because the photonic cross-communication is selective with respect to the chirality of the incoming light, these photo-responsive microspheres show potential for chiroptical all-optical distributors and switches, in which wavelength, chirality and direction of the reflected light can be controlled independently and reversibly.
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Affiliation(s)
- Sarah J. Aβhoff
- Laboratory for Biomolecular Nanotechnology (BNT), MESA+Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
| | - Sertan Sukas
- BIOS, Lab on a Chip Group, MESA+Institute for Nanotechnology and MIRA Institute for Biomedical Engineering and Technical Medicine, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
| | - Tadatsugu Yamaguchi
- Laboratory for Biomolecular Nanotechnology (BNT), MESA+Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
| | - Catharina A. Hommersom
- Laboratory for Biomolecular Nanotechnology (BNT), MESA+Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
| | - Séverine Le Gac
- BIOS, Lab on a Chip Group, MESA+Institute for Nanotechnology and MIRA Institute for Biomedical Engineering and Technical Medicine, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
| | - Nathalie Katsonis
- Laboratory for Biomolecular Nanotechnology (BNT), MESA+Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
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29
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Orlova T, Aßhoff SJ, Yamaguchi T, Katsonis N, Brasselet E. Creation and manipulation of topological states in chiral nematic microspheres. Nat Commun 2015; 6:7603. [PMID: 26145716 PMCID: PMC4506501 DOI: 10.1038/ncomms8603] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 05/25/2015] [Indexed: 12/26/2022] Open
Abstract
Topology is a universal concept that is encountered in daily life and is known to determine many static and dynamical properties of matter. Taming and controlling the topology of materials therefore constitutes a contemporary interdisciplinary challenge. Building on the controllable spatial properties of soft matter appears as a relevant strategy to address the challenge, in particular, because it may lead to paradigmatic model systems that allow checking theories experimentally. Here we report experimentally on a wealth of complex free-standing metastable topological architectures at the micron scale, in frustrated chiral nematic droplets. These results support recent works predicting the formation of free-standing knotted and linked disclination structures in confined chiral nematic fluids. We also demonstrate that various kinds of external fields (thermal, electrical and optical) can be used to achieve topological remote control. All this may foster the development of new devices based on topologically structured soft media.
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Affiliation(s)
- Tetiana Orlova
- Laboratoire Ondes et Matière d'Aquitaine, University of Bordeaux, CNRS, 351 cours de la Libération, Talence F-33400, France
| | - Sarah Jane Aßhoff
- Laboratory for Biomolecular Nanotechnology, MESA+ Institute for Nanotechnology, University of Twente, PO Box 207, Enschede 7500AE, The Netherlands
| | - Tadatsugu Yamaguchi
- Laboratory for Biomolecular Nanotechnology, MESA+ Institute for Nanotechnology, University of Twente, PO Box 207, Enschede 7500AE, The Netherlands
| | - Nathalie Katsonis
- Laboratory for Biomolecular Nanotechnology, MESA+ Institute for Nanotechnology, University of Twente, PO Box 207, Enschede 7500AE, The Netherlands
| | - Etienne Brasselet
- Laboratoire Ondes et Matière d'Aquitaine, University of Bordeaux, CNRS, 351 cours de la Libération, Talence F-33400, France
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30
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Wang L, Dong H, Li Y, Liu R, Wang YF, Bisoyi HK, Sun LD, Yan CH, Li Q. Luminescence-driven reversible handedness inversion of self-organized helical superstructures enabled by a novel near-infrared light nanotransducer. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:2065-9. [PMID: 25675908 DOI: 10.1002/adma.201405690] [Citation(s) in RCA: 137] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 01/09/2015] [Indexed: 05/27/2023]
Abstract
Nanotransducer-impregnated self-organized helical superstructures are found to exhibit unprecedented reversible handedness inversion upon irradiation by the dual-wavelength near-infrared light. Upon near-infrared laser irradiation at 808 nm, the helical twist sense changes from right-handed to left-handed through an achiral liquid-crystal phase, whereas its reverse process occurs upon the near-infrared laser irradiation at 980 nm.
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Affiliation(s)
- Ling Wang
- Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH, 44242, USA
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31
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Ryabchun A, Bobrovsky A, Gritsai Y, Sakhno O, Shibaev V, Stumpe J. Stable selective gratings in LC polymer by photoinduced helix pitch modulation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:2554-2560. [PMID: 25541812 DOI: 10.1021/am507499p] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A cholesteric mixture based on the nematic liquid crystalline side-chain polymer doped with a chiral-photochromic compound was prepared and used as an active medium for creation of stable polarization selective gratings by phototunable modulation of the helix pitch. Such modulation was fabricated in the polymer mixture by a nonpolarized UV-irradiation with spatially modulated intensity that causes E-Z isomerization of a chiral-photochromic dopant, decreasing its helical twisting power. It was shown that the gratings recorded by UV-exposure through a mask are strongly selective to the handedness of circular polarized light. The studied polymer film forms a right-handed helical structure and, correspondingly, the diffraction of only the right-circularly polarized light was found in the transmittance mode. The maximum diffraction efficiencies were found for the wavelength values between the maxima of selective light reflection. The films obtained open very interesting possibilities for further development of materials with stable gratings operating in the entire visible spectral range. Both the position and the width of the spectral range of an efficient diffraction can be easily controlled by the UV exposure and concentration of the dopant. The materials obtained and methods developed can be used for creation of specific diffraction elements for optics and photonics.
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Affiliation(s)
- Alexander Ryabchun
- Fraunhofer Institute for Applied Polymer Research , Geiselbergstr. 69, Potsdam/Golm, 14476 Germany
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32
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Loussert C, Iamsaard S, Katsonis N, Brasselet E. Subnanowatt opto-molecular generation of localized defects in chiral liquid crystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:4242-4246. [PMID: 24789629 DOI: 10.1002/adma.201400811] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 03/21/2014] [Indexed: 06/03/2023]
Affiliation(s)
- Charles Loussert
- Université de Bordeaux, CNRS, Laboratoire Ondes et Matière d'Aquitaine, F-33400, Talence, France
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33
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Kundu S, Kang SW. Photo-stimulated phase and anchoring transitions of chiral azo-dye doped nematic liquid crystals. OPTICS EXPRESS 2013; 21:31324-31329. [PMID: 24514707 DOI: 10.1364/oe.21.031324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report concurring phase and anchoring transitions of chiral azo-dye doped nematic liquid crystals. The transitions are induced by photo-stimulation and stable against light and thermal treatments. Photochromic trans- to cis-isomerization of azo-dye induces an augmented dipole moment and strong dipole-dipole interaction of the cis-isomers, resulting in the formation of nano-sized dye-aggregates. Consequent phase separation of the aggregates of a chiral azo-dye induces phase transition from a chiral to nonchiral nematic phase. In addition, the deposition of dye-aggregates at the surfaces brings about anchoring transition of LC molecules. The stability and irreversibility of the transition, together with no need of pretreatments for LC alignment, provide fascinating opportunity for liquid crystal device applications.
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34
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Li Y, Xue C, Wang M, Urbas A, Li Q. Photodynamic chiral molecular switches with thermal stability: from reflection wavelength tuning to handedness inversion of self-organized helical superstructures. Angew Chem Int Ed Engl 2013; 52:13703-7. [PMID: 24150899 DOI: 10.1002/anie.201306396] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Indexed: 11/10/2022]
Abstract
A good turn: Three compounds that bear two axially chiral bridged binaphthyl units were developed as photodynamic chiral dopants for nematic liquid crystals. For compounds with suitable bridge lengths, a change in the dihedral angle induced a switch of the binaphthyl units from the cisoid to the transoid form upon UV irradiation, which led to an inversion of the handedness of the helices.
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Affiliation(s)
- Yannian Li
- Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH 44242 (USA)
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Li Y, Xue C, Wang M, Urbas A, Li Q. Photodynamic Chiral Molecular Switches with Thermal Stability: From Reflection Wavelength Tuning to Handedness Inversion of Self-Organized Helical Superstructures. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306396] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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