1
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Li YH, Cui M, Gong Y, Xu TY, Tong F. Size Reduction to Enhance Crystal-to-Liquid Phase Transition Induced by E-to- Z Photoisomerization Based on Molecular Crystals of Phenylbutadiene Ester. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3664. [PMID: 39124328 PMCID: PMC11312889 DOI: 10.3390/ma17153664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 07/17/2024] [Accepted: 07/23/2024] [Indexed: 08/12/2024]
Abstract
Harnessing the photoinduced phase transitions in organic crystals, especially the changes in shape and structure across various dimensions, offers a fascinating avenue for exact spatiotemporal control, which is crucial for developing future smart devices. In our study, we report a new photoactive molecular crystal made from (E)-2-(3-phenyl-allylidene)malonate ((E)-PADM). When exposed to ultraviolet (UV) light at 365 nm, this compound experiences an E-to-Z photoisomerization in liquid solution and a crystal-to-liquid phase transition in solid crystals. Remarkably, nanoscopic crystalline rods boost their melting rate and degree compared to bulk crystals, indicating that miniaturization enhances the photoinduced melting effect. Our results demonstrate a simple approach to rapidly drive molecular crystals into liquids via photochemical reactions and phase transitions.
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Affiliation(s)
| | | | | | | | - Fei Tong
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China; (Y.-H.L.); (M.C.); (Y.G.); (T.-Y.X.)
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2
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Kumar H, Parthiban G, Velloth A, Saini J, De R, Pal SK, Hazra KS, Venkataramani S. Arylazo-3,5-diphenylpyrazole Derivatives: Molecular Probes Exhibiting Reversible Light-induced Phase Transitions for Energy Storage and Direct Photolithographic Patterning. Chemistry 2024:e202401836. [PMID: 38818932 DOI: 10.1002/chem.202401836] [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: 05/10/2024] [Revised: 05/29/2024] [Accepted: 05/31/2024] [Indexed: 06/01/2024]
Abstract
We report azopyrazole photoswitches decorated with variable N-alkyl and alkoxy chains (for hydrophobic interactions) and phenyl substituents on the pyrazoles (enabling π-π stacking), showing efficient bidirectional photoswitching and reversible light-induced phase transition (LIPT). Extensive spectroscopic, microscopic, and diffraction studies and computations confirmed the manifestation of molecular-level interactions and photoisomerization into macroscopic changes leading to the LIPT phenomena. Using differential scanning calorimetric (DSC) studies, the energetics associated with those accompanying processes were estimated. The long half-lives of Z isomers, high energy contents for isomerization and phase transitions, and the stability of phases over an extended temperature range (-60 to 80 °C) make them excellent candidates for energy storage and release applications. Remarkably, the difference in the solubility of the distinct phases in one of the derivatives allowed us to utilize it as a photoresist in photolithography applications on diverse substrates.
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Affiliation(s)
- Himanshu Kumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Knowledge City, 140 306, Manauli, Punjab, India
| | - Gayathri Parthiban
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Knowledge City, 140 306, Manauli, Punjab, India
| | - Archana Velloth
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Knowledge City, 140 306, Manauli, Punjab, India
| | - Jyoti Saini
- Institute of Nano Science and Technology, Sector 81, SAS Nagar, Knowledge City, 140 306, Manauli, Punjab, India
| | - Ritobrata De
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Knowledge City, 140 306, Manauli, Punjab, India
| | - Santanu Kumar Pal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Knowledge City, 140 306, Manauli, Punjab, India
| | - Kiran Shankar Hazra
- Institute of Nano Science and Technology, Sector 81, SAS Nagar, Knowledge City, 140 306, Manauli, Punjab, India
| | - Sugumar Venkataramani
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Knowledge City, 140 306, Manauli, Punjab, India
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3
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Norikane Y, Ohnuma M, Kwaria D, Kikkawa Y, Ohzono T, Mizokuro T, Abe K, Manabe K, Saito K. Photo-controllable azobenzene microdroplets on an open surface and their application as transporters. MATERIALS HORIZONS 2024; 11:1495-1501. [PMID: 38226904 DOI: 10.1039/d3mh01774e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
The control of droplet motion is a significant challenge, as there has been no simple method for effective manipulation. Utilizing light for the control of droplets offers a promising solution due to its non-contact nature and high degree of controllability. In this study, we present our findings on the translational motion of pre-photomelted droplets composed of azobenzene derivatives on a glass surface when exposed to UV and visible light sources from different directions. These droplets exhibited directional and continuous motion upon light irradiation and this motion was size-dependent. Only droplets with diameters less than 10 μm moved with a maximum velocity of 300 μm min-1. In addition, the direction of the movement was controllable by the direction of the light. The motion is driven by a change in contact angle, where UV or visible light switched the contact angle to approximately 50° or 35°, respectively. In addition, these droplets were also found to be capable carriers for fluorescent quantum dots. As such, droplets composed of photoresponsive molecules offer unique opportunities for designing novel light-driven open-surface microfluidic systems.
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Affiliation(s)
- Yasuo Norikane
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan.
- Faculty of Pure and Applied Sciences, University of Tsukuba, Ibaraki, 305-8571, Japan
| | - Mio Ohnuma
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan.
| | - Dennis Kwaria
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan.
| | - Yoshihiro Kikkawa
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan.
| | - Takuya Ohzono
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan.
| | - Toshiko Mizokuro
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan.
| | - Koji Abe
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan.
| | - Kengo Manabe
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan.
| | - Koichiro Saito
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8565, Japan.
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4
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Uranga Wassermann MV, Soulé ER, Balbuena C. The influence of molecular shape on glass-forming behavior in a minimalist trimer model. SOFT MATTER 2023; 19:9282-9292. [PMID: 38009334 DOI: 10.1039/d3sm01495a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
In this study, we employed molecular dynamics simulations to probe the influence of molecular morphological changes on the dynamic behavior of a model consisting of trimer molecules. This model, comprising a chain of three particles, facilitates the exploration of variations in the internal angle between these particles. Our findings highlight the significant impact of molecular conformation: systems with more linear conformations, characterized by larger internal angles, exhibit relaxation times several orders of magnitude greater than their counterparts with smaller internal angles. Furthermore, we delve into the role of angular interaction rigidity, uncovering a pronounced deceleration in dynamics and an increase in dynamic heterogeneity as rigidity escalates. This model not only provides insights into azobenzene-type systems but also sets the stage for subsequent research into the microscopic nuances of related systems, with potential extensions to composite systems.
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Affiliation(s)
- María Victoria Uranga Wassermann
- Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), Colón 10850, 7600 Mar del Plata, Argentina.
| | - Ezequiel Rodolfo Soulé
- Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), Colón 10850, 7600 Mar del Plata, Argentina.
| | - Cristian Balbuena
- Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), Colón 10850, 7600 Mar del Plata, Argentina.
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5
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Cui X, Dang M, Jiang J, Liu ZT, Liu ZW, Li G. Stretching-Induced 2D-to-3D Shape Transformation of an Elastic Composite for Sensitivity-Tailorable Soft Electronics. ACS APPLIED MATERIALS & INTERFACES 2023; 15:51846-51853. [PMID: 37874133 DOI: 10.1021/acsami.3c13997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
The shapes of rubbers and elastomers are challenging to alter, and current methods relying on permanent plasticity and dynamic cross-linking strategies are usually laborious and can inevitably compromise the network elasticity. Here, we report a photoresponsive elastic composite that can be programmed into 3D shapes by first UV light irradiation and then stretching. The composite comprises ethylene propylene rubber as the elastic substrate and photoliquefiable azobenzene small molecules as the responsive filler. Upon UV light irradiation, the liquefication of the filler induces the destruction of the crystalline aggregates near the irradiated surface, and after stretching and subsequent stress release, the irradiated part bends to the irradiated side based on a gradient network orientation mechanism. The position and amplitude of bending deformation can be controlled to realize a 2D-to-3D shape transformation. We further show that the resulting 3D-shaped elastomer can integrate with silver conductive paste to develop soft conductive lines with tailorable strain-sensitive conductivities. This study may open a new door for the development of shape-tailorable elastomers and soft electronics with designable strain-sensitive conductivities.
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Affiliation(s)
- Xiangxi Cui
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
| | - Min Dang
- Shaanxi Textile Science Institute Co., Ltd., Xi'an, Shaanxi Province 710062, China
| | - Jinqiang Jiang
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
| | - Zhao-Tie Liu
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
| | - Zhong-Wen Liu
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
| | - Guo Li
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi Province 710062, China
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6
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Gupta D, Gaur AK, Kaur R, Ashish, Kaur N, Venkataramani S. Photoswitchable Azoheteroarene-Based Chelating Ligands: Light Modulation of Properties, Aqueous Solubility and Catalysis. Chemistry 2023; 29:e202301906. [PMID: 37477625 DOI: 10.1002/chem.202301906] [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: 06/15/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 07/22/2023]
Abstract
We report the design and synthesis of eight photoswitchable phenylazopyridine- and phenylazopyrazole-based molecular systems as chelation-type light-controllable ligands. Besides the studies on fundamental photoisomerization behaviour, the ligands were also screened for light-tuneable properties such as photochromism, phase transition, and solubility, especially in the aqueous medium. This investigation demonstrates how the modulation of aqueous solubility can be achieved through photoisomerization and can further be utilized towards controlling the amount of catalytically active Cu(I) species in the aqueous conditions. Through this approach, light control over the catalytic activity was achieved for Cu-catalyzed azide-alkyne cycloaddition (CuAAC) reactions, along with a partial recovery of the catalytically active species.
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Affiliation(s)
- Debapriya Gupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
| | - Ankit Kumar Gaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
| | - Ramanpreet Kaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
| | - Ashish
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
| | - Navneet Kaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
| | - Sugumar Venkataramani
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali Sector 81, SAS Nagar, Knowledge City, Manauli, 140 306, India
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7
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Ahsan MR, Singh L, Varma H, Mukherjee A. Exploiting benzilic acid as a modular template: controlling photoreactivity and solid to liquid transition during photodimerization. Chem Commun (Camb) 2023; 59:12711-12714. [PMID: 37811973 DOI: 10.1039/d3cc04257j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
A well-known molecule, benzilic acid, is used as a [2+2] photodimerization template by using third-generation crystal engineering principles. This template utilizes orthogonality and non-covalent interactions in an optimized way and is shown to be effective in tuning the photoreactivity of styryl pyridine derivatives. The photo-induced crystal-to-liquid transformation was observed during photodimerization. This phenomenon is explained based on slip plane and energy framework analysis.
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Affiliation(s)
- Mollah Rohan Ahsan
- Department of Chemistry, Birla Institute of Science and Technology (BITS) Pilani, Hyderabad campus, Hyderabad 500078, Telangana, India.
| | - Lavanya Singh
- Department of Chemistry, Birla Institute of Science and Technology (BITS) Pilani, Hyderabad campus, Hyderabad 500078, Telangana, India.
| | - Harshit Varma
- Department of Chemistry, Birla Institute of Science and Technology (BITS) Pilani, Hyderabad campus, Hyderabad 500078, Telangana, India.
| | - Arijit Mukherjee
- Department of Chemistry, Birla Institute of Science and Technology (BITS) Pilani, Hyderabad campus, Hyderabad 500078, Telangana, India.
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8
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Zheng S, Lin YL, Chang CC, Lee MJ, Chen YF, Lee LR, Chang MH, Chen JT. Boosting Ion Conductivities: Light-Modulated Azobenzene-Based Ionic Liquids in Vertical Nanochannels. ACS APPLIED MATERIALS & INTERFACES 2023; 15:45418-45425. [PMID: 37677063 DOI: 10.1021/acsami.3c08792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Exploring stimuli-responsive ion-conductive materials is a challenging task, but it has gained increasing attention because of their enormous potential applications in actuators, sensors, and smart electronics. Here, we demonstrate a distinctive photoresponsive ion-conductive device that utilizes azobenzene-based ionic liquids ([AzoCnMIM][Br], where n = 2, 6, and 10), confined in nanochannels of anodic aluminum oxide (AAO) templates for photoisomerization. The structure of [AzoCnMIM][Br] comprises photoresponsive and hydrophobic azobenzene moieties, hydrophilic imidazolium cations, and negatively charged bromide ions. Therefore, [AzoCnMIM][Br] can form micelles and exhibit photoresponsive ion conductivities. The nanochannels of AAO templates exhibit a confinement effect on the formation of azobenzene-based ionic liquid micelles due to the pore size, thereby preventing the formation of larger micelles that could lead to a decrease in conductivity. Consequently, the ion conductivities of the azobenzene-based ionic liquids are higher in the nanochannels of the AAO templates. The effects of the length of carbon chains on the azobezene-based ionic liquids and the pore size of the AAO templates have also been investigated. Additionally, through irradiation with UV/vis light, [AzoCnMIM][Br] can undergo reversible isomerization, thereby reversibly changing the sizes of the micelles and subsequently altering the ion conductivities.
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Affiliation(s)
- Sheng Zheng
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Yu-Liang Lin
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Chun-Chi Chang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Min-Jie Lee
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Yi-Fan Chen
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Lin-Ruei Lee
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Ming-Hsuan Chang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Jiun-Tai Chen
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
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9
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Koibuchi R, Omasa K, Yoshikawa I, Houjou H. Photoinduced Crystal-to-Liquid Transition of Acylhydrazone-Based Photoswitching Molecules. J Phys Chem Lett 2023; 14:8320-8326. [PMID: 37695691 DOI: 10.1021/acs.jpclett.3c02164] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
A photoinduced crystal-to-liquid transition (PCLT) behavior of new acylhydrazone derivatives (NCs) is reported. The photoswitching of the NCs was identified as a negative photochromism with a high E-to-Z conversion yield (>98%). A kinetic analysis shows a half-life of almost one month. Owing to these high photoswitching performances, we successfully isolated both E- and Z-forms, evaluated their crystal structures, and observed distinct thermal behaviors. The Z-form melts at a lower temperature than the E-form by several tens of degrees. The PCLT occurs at even lower temperatures. UV irradiation induces the E-to-Z conversion in the crystalline state, thereby inducing a eutectic melting. In addition to the PCLT, we observed a photomechanical behavior of the crystals, which suggests that the presented acylhydrazones can be new members of the photoresponsive crystalline materials.
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Affiliation(s)
- Ryo Koibuchi
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153- 8505, Japan
| | - Koichiro Omasa
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153- 8505, Japan
| | - Isao Yoshikawa
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153- 8505, Japan
| | - Hirohiko Houjou
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153- 8505, Japan
- Environmental Science Center, The University of Tokyo, 7-3-1 Hongo, Tokyo 113- 0033, Japan
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10
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Komura M, Sotome H, Miyasaka H, Ogawa T, Tani Y. Photoinduced crystal melting with luminescence evolution based on conformational isomerisation. Chem Sci 2023; 14:5302-5308. [PMID: 37234907 PMCID: PMC10207888 DOI: 10.1039/d3sc00838j] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 04/19/2023] [Indexed: 05/28/2023] Open
Abstract
The phenomenon of crystal melting by light irradiation, known as photo-induced crystal-to-liquid transition (PCLT), can dramatically change material properties with high spatiotemporal resolution. However, the diversity of compounds exhibiting PCLT is severely limited, which hampers further functionalisation of PCLT-active materials and the fundamental understandings of PCLT. Here, we report on heteroaromatic 1,2-diketones as the new class of PCLT-active compounds, whose PCLT is based on conformational isomerisation. In particular, one of the diketones demonstrates luminescence evolution prior to crystal melting. Thus, the diketone crystal exhibits dynamic multistep changes in the luminescence colour and intensity during continuous ultraviolet irradiation. This luminescence evolution can be ascribed to the sequential PCLT processes of crystal loosening and conformational isomerisation before macroscopic melting. Single-crystal X-ray structural analysis, thermal analysis, and theoretical calculations of two PCLT-active and one inactive diketones revealed weaker intermolecular interactions for the PCLT-active crystals. In particular, we observed a characteristic packing motif for the PCLT-active crystals, consisting of an ordered layer of diketone core and a disordered layer of triisopropylsilyl moieties. Our results demonstrate the integration of photofunction with PCLT, provide fundamental insights into the melting process of molecular crystals, and will diversify the molecular design of PCLT-active materials beyond classical photochromic scaffolds such as azobenzenes.
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Affiliation(s)
- Mao Komura
- Department of Chemistry, Graduate School of Science, Osaka University Toyonaka Osaka 560-0043 Japan
| | - Hikaru Sotome
- Division of Frontier Materials Science and Centre for Advanced Interdisciplinary Research, Graduate School of Engineering Science, Osaka University Toyonaka Osaka 560-8531 Japan
| | - Hiroshi Miyasaka
- Division of Frontier Materials Science and Centre for Advanced Interdisciplinary Research, Graduate School of Engineering Science, Osaka University Toyonaka Osaka 560-8531 Japan
| | - Takuji Ogawa
- Department of Chemistry, Graduate School of Science, Osaka University Toyonaka Osaka 560-0043 Japan
| | - Yosuke Tani
- Department of Chemistry, Graduate School of Science, Osaka University Toyonaka Osaka 560-0043 Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University Suita Osaka 565-0871 Japan
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11
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Varela-Domínguez N, López-Bueno C, López-Moreno A, Claro MS, Rama G, Leborán V, Giménez-López MDC, Rivadulla F. Light-induced bi-directional switching of thermal conductivity in azobenzene-doped liquid crystal mesophases. JOURNAL OF MATERIALS CHEMISTRY. C 2023; 11:4588-4594. [PMID: 37033203 PMCID: PMC10077501 DOI: 10.1039/d3tc00099k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/23/2023] [Indexed: 06/19/2023]
Abstract
The development of systems that can be switched between states with different thermal conductivities is one of the current challenges in materials science. Despite their enormous diversity and chemical richness, molecular materials have been only scarcely explored in this regard. Here, we report a reversible, light-triggered thermal conductivity switching of ≈30-40% in mesophases of pure 4,4'-dialkyloxy-3-methylazobenzene. By doping a liquid crystal matrix with the azobenzene molecules, reversible and bidirectional switching of the thermal conductivity can be achieved by UV/Vis-light irradiation. Given the enormous variety of photoactive molecules and chemically compatible liquid crystal mesophases, this approach opens unforeseen possibilities for developing effective thermal switches based on molecular materials.
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Affiliation(s)
- Noa Varela-Domínguez
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Fisica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Carlos López-Bueno
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Fisica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Alejandro López-Moreno
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Inorganica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Marcel S Claro
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Fisica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Gustavo Rama
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Inorganica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Víctor Leborán
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - María Del Carmen Giménez-López
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Inorganica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
| | - Francisco Rivadulla
- CiQUS, Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares, Departamento de Quimica-Fisica, Universidade de Santiago de Compostela 15782-Santiago de Compostela Spain
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12
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Kikkawa Y, Nagasaki M, Norikane Y. Two-dimensional self-assemblies of azobenzene derivatives: effects of methyl substitution of azobenzene core and alkyl chain length. Phys Chem Chem Phys 2022; 24:29757-29764. [PMID: 36458744 DOI: 10.1039/d2cp05097h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Elucidating the correlation between the molecular arrangement and physical properties of organic compounds is critical to facilitating the development of advanced functional materials. X-ray structural analyses are generally performed to clarify this relationship. Several attempts have been made to ascertain the links between three-dimensional (3D) crystals and their two-dimensional (2D) structures, which can be revealed by scanning tunnelling microscopy (STM) at the molecular level. Thus, 2D self-assemblies of a series of azobenzene derivatives were investigated in this study, and the effects of methyl substitution of the azobenzene core and alkyl chain length on the 2D molecular arrangements at the solid/liquid interface were revealed. Three types of azobenzene derivatives were prepared; these contained azobenzene (Az), 3-methyl azobenzene (MAz), or 3,3'-dimethyl azobenzene (DAz) as cores and alkyloxy chains of different lengths (C8-13) at their 4,4' positions. The 2D structures of the Az and DAz compounds were found to be modulated owing to the odd-even effect of the alkyl chains in a specific chain-length range; this effect was only weakly exhibited by the MAz compounds. This result suggests that only the methyl-group substitution of the azobenzene core significantly affected the 2D structures. The 2D structural features have been discussed in terms of molecular conformation, as well as their correlation with the photo-melting behaviour of the azobenzene derivatives, particularly the MAz compounds.
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Affiliation(s)
- Yoshihiro Kikkawa
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
| | - Mayumi Nagasaki
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
| | - Yasuo Norikane
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
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13
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Sun S, Liang S, Xu WC, Wang M, Gao J, Zhang Q, Wu S. Photoswitches with different numbers of azo chromophores for molecular solar thermal storage. SOFT MATTER 2022; 18:8840-8849. [PMID: 36373235 DOI: 10.1039/d2sm01073a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
We investigate three azo-chromophore-containing photoswitches (1, 2 and 3) for molecular solar thermal storage (MOST) based on reversible Z-E isomerization. 1, 2 and 3 are photoswitchable compounds that contain one, two and three azo chromophores, respectively. In solution, 1, 2 and 3 were charged via UV-light-induced E-to-Z isomerization. Among these three compounds, 2 exhibited an energy density as high as 272 ± 1.8 J g-1, which showed the best energy storage performance. This result originated from the low molecular weight, a high degree of photoisomerization, and moderate steric hindrance of 2, which demonstrated the advantages of the meta-bisazobenzene structure for MOST. In addition, we studied the performances of these photoswitches in the solvent-free state. Only 1 showed photoinduced reversible solid-to-liquid transitions, which enabled the charging of 1 in a solvent-free state. The stored energy density for 1 in a solvent-free state was 237 ± 1.5 J g-1. By contrast, 2 and 3 could not be charged in the solvent-free state due to the lack of solid-state photoisomerization. Our findings provide a better understanding of the structure-performance relationship for azobenzenebased MOST and pave the way for the development of high-density solar thermal fuels.
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Affiliation(s)
- Shaodong Sun
- CAS Key Laboratory of Soft Matter Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
| | - Shuofeng Liang
- CAS Key Laboratory of Soft Matter Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
| | - Wen-Cong Xu
- CAS Key Laboratory of Soft Matter Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
| | - Minghao Wang
- CAS Key Laboratory of Soft Matter Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
| | - Jiangang Gao
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China
| | - Qijin Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
| | - Si Wu
- CAS Key Laboratory of Soft Matter Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
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14
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Yang Y, Huang S, Ma Y, Yi J, Jiang Y, Chang X, Li Q. Liquid and Photoliquefiable Azobenzene Derivatives for Solvent-free Molecular Solar Thermal Fuels. ACS APPLIED MATERIALS & INTERFACES 2022; 14:35623-35634. [PMID: 35916069 DOI: 10.1021/acsami.2c07870] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A series of liquid and photoliquefiable azobenzene (Azo) derivatives (Azo-Cn-Br) have been synthesized for molecular solar thermal fuels. Each of the liquid and photoliquefiable azo derivatives shows a high degree of isomerization, a fast isomerization rate, a long half-life, an appropriate energy storage density, and a solvent-free "charging" and "discharging" process. The photoliquefied azo derivatives can isomerize upon UV light irradiation at low temperatures to give the "UV-charged" azo ones. Therefore, the phase transition enthalpy is stored simultaneously along with the isomerization enthalpy. The "UV-charged" azo derivatives are capable of releasing heat under the manipulation of blue light.
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Affiliation(s)
- Yajing Yang
- Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Shuai Huang
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yanduo Ma
- Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Jie Yi
- Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Yuchun Jiang
- Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Xiaohong Chang
- Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Quan Li
- Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
- Advanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, Ohio 44242, United States
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15
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Oki O, Yamagishi H, Morisaki Y, Inoue R, Ogawa K, Miki N, Norikane Y, Sato H, Yamamoto Y. Synchronous assembly of chiral skeletal single-crystalline microvessels. Science 2022; 377:673-678. [PMID: 35926016 DOI: 10.1126/science.abm9596] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Skeletal or concave polyhedral crystals appear in a variety of synthetic processes and natural environments. However, their morphology, size, and orientation are difficult to control because of their highly kinetic growth character. We report a methodology to achieve synchronous, uniaxial, and stepwise growth of micrometer-scale skeletal single crystals from planar-chiral double-decker molecules. Upon drop-casting of a heated ethanol solution onto a quartz substrate, the molecules spontaneously assemble into standing vessel-shaped single crystals uniaxially and synchronously over the wide area of the substrate, with small size polydispersity. The crystal edge is active even after consumption of the molecules and resumes stereoselective growth with successive feeding. The resultant morphology can be packed into polycyclic aromatic hydrocarbon-like microarchitectures and behaves as a microscopic container.
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Affiliation(s)
- Osamu Oki
- Department of Materials Science, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Hiroshi Yamagishi
- Department of Materials Science, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Yasuhiro Morisaki
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Ryo Inoue
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Kana Ogawa
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Nanami Miki
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Yasuo Norikane
- Department of Materials Science, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan.,Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Hiroyasu Sato
- Rigaku Corporation, 12-9-3 Matsubara, Akishima, Tokyo 196-8666, Japan
| | - Yohei Yamamoto
- Department of Materials Science, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
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16
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Shang C, Xiong Z, Liu S, Yu W. Molecular Dynamics of Azobenzene Polymer with Photoreversible Glass Transition. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ce Shang
- Advanced Rheology Institute, Department of Polymer Science and Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zhongqiang Xiong
- Advanced Rheology Institute, Department of Polymer Science and Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Sijun Liu
- Advanced Rheology Institute, Department of Polymer Science and Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Wei Yu
- Advanced Rheology Institute, Department of Polymer Science and Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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17
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Zhao R, Mu J, Bai J, Zhao W, Gong P, Chen L, Zhang N, Shang X, Liu F, Yan S. Smart Responsive Azo-Copolymer with Photoliquefaction for Switchable Adhesive Application. ACS APPLIED MATERIALS & INTERFACES 2022; 14:16678-16686. [PMID: 35363479 DOI: 10.1021/acsami.2c01556] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The development and utilization of switchable adhesives are considered to be an essential target to solve the problems of their separation and recycling in some specific service environments, such as the preparation or repair process of electronic devices. Intelligent materials with controllable phase transition are utilized to fabricate switchable adhesives because of the significantly diverse adhesion strengths in different phase states. Photoresponsive azobenzene and its derivatives usually possess different melting temperatures (Tm) or/and glass transition temperatures (Tg) of the cis-trans isomers, which are beneficial to making the photoinduced solid-liquid phase transition for switchable adhesive application possible. Here, a novel three-component azo-copolymer (PNIM-Azo) with fast and reversible photoinduced solid-liquid phase transition has been designed and synthesized. PNIM-Azo possesses reversible bonding/debonding processes, resulting from the different adhesion strengths between trans-configuration PNIM-Azo in the solid state and cis-configuration in the liquid state. Moreover, by incorporating commercialized 2-methoxyethyl acrylate and N-isopropylacrylamide with O and N heteroatoms into the copolymer, the trans-configuration PNIM-Azo possesses the highest adhesion strength (∼11 MPa between two glass substrates) among all of the reported azobenzene-based switchable adhesives, which could be attributed to the increase in the entanglement effect because of the H-bond in the polymer chains formed by introducing heteroatoms. Our synthesized PNIM-Azo copolymer provides an alternative for designing and developing switchable adhesives with high adhesion strength for some electronic production processes.
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Affiliation(s)
- Ruiyang Zhao
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Jiahui Mu
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Jiayu Bai
- Department of Laboratory, Central Hospital Affiliated to Shenyang Medical College, Shenyang 110000, P. R. China
| | - Wenpeng Zhao
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Piwen Gong
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Longxuan Chen
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Na Zhang
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Xili Shang
- Department of Chemical Engineering and Safety, Binzhou University, Binzhou 256603, P. R. China
| | - Fusheng Liu
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Shouke Yan
- Key Laboratory of Rubber-Plastics, Ministry of Education, Qingdao University of Science & Technology, Qingdao 266042, P.R. China
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18
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Okaji M, Yamauchi M, Masuo S. Visible Light-induced Emission Enhancement in Aggregates of an Azobenzene Derivative. CHEM LETT 2022. [DOI: 10.1246/cl.210801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Miho Okaji
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Mitsuaki Yamauchi
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Sadahiro Masuo
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
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19
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Yamauchi M, Okaji M, Aratani N, Yamada H, Masuo S. Reversible Photoluminescence Control of Azobenzene Crystals by Light and Heat Stimulation. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202100301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mitsuaki Yamauchi
- Kwansei Gakuin University Applied Chemistry for Environment 2-1 Gakuen 669-1337 Sanda JAPAN
| | - Miho Okaji
- Kwansei Gakuin University: Kansei Gakuin Daigaku Applied Chemistry for Environment JAPAN
| | - Naoki Aratani
- Nara Institute of Science and Technology: Nara Sentan Kagaku Gijutsu Daigakuin Daigaku Division of Materials Science JAPAN
| | - Hiroko Yamada
- Nara Institute of Science and Technology: Nara Sentan Kagaku Gijutsu Daigakuin Daigaku Division of Materials Science JAPAN
| | - Sadahiro Masuo
- Kwansei Gakuin University: Kansei Gakuin Daigaku Applied Chemistry for Environment JAPAN
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20
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Griffiths K, Halcovitch NR, Griffin JM. Crystalline azobenzene composites as photochemical phase-change materials. NEW J CHEM 2022. [DOI: 10.1039/d2nj00755j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Crystalline binary mixtures of azobenzene and 4-methoxyazobenzene are reported and form photochemical phase change materials that possess working temperatures in the range of −58 °C to 31 °C.
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Affiliation(s)
- Kieran Griffiths
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, UK
| | | | - John M. Griffin
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, UK
- Materials Science Institute, Lancaster University, Lancaster, LA1 4YB, UK
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21
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Sun S, Yuan C, Xie Z, Xu WC, Zhang Q, Wu S. Photoresponsive nanostructures of azobenzene-containing block copolymers at solid surfaces. Polym Chem 2022. [DOI: 10.1039/d1py01452h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An azobenzene-containing block copolymer self-assembled into island-like nanostructures. The island-like nanostructures fused into chain-like nanostructures under UV irradiation based on photoinduced solid-to-liquid transitions at the nanoscale.
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Affiliation(s)
- Shaodong Sun
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Chenrui Yuan
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zhulu Xie
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Wen-Cong Xu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Qijin Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Si Wu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Anhui Key Laboratory of Optoelectronic Science and Technology, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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22
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Lee C, Ndaya D, Bosire R, Kim NK, Kasi RM, Osuji CO. Fast Photoswitchable Order-Disorder Transitions in Liquid-Crystalline Block Co-oligomers. J Am Chem Soc 2021; 144:390-399. [PMID: 34962798 DOI: 10.1021/jacs.1c10256] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Optically driven ordering transitions are rarely observed in macromolecular systems, often because of kinetic limitations. Here, we report a series of block co-oligomers (BCOs) that rapidly order and disorder at room temperature in response to optical illumination, and the absence thereof. The system is a triblock where rigid azobenzene (Azo) mesogens are attached to each end of a flexible siloxane chain. UV-induced trans-to-cis Azo isomerization, and vice versa in the absence of UV light, drive disordering and ordering of lamellar superstructures and smectic mesophases, as manifested by liquefaction and solidification of the material, respectively. The impacts of chemical structure on BCO self-assembly and photoswitching kinetics are explored by in situ microscopy and X-ray measurements for different mesogen end groups (NO2 or CN), and different carbon chain lengths (0C or 12C) between the siloxane and the mesogen. The presence of the 12C spacer leads to hierarchical ordering with smectic layers of mesogens existing alongside larger length-scale lamellae, versus only smectic ordering without the spacer. These hierarchically ordered BCOs display highly persistent lamellar sheets that contrast with the tortuous, low-persistence "fingerprint"-type structures seen in conventional block copolymers. The reordering kinetics upon removal of UV illumination are extremely rapid (<5 s). This fast response is due to the electron-withdrawing NO2 and CN, which facilitate cis-to-trans isomerization via thermal relaxation at room temperature without additional stimuli. This work elucidates structure-property relationships in photoswitching BCOs and advances the possibility of developing systems in which ordered nanostructures can be easily optically written and erased.
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Affiliation(s)
- Changyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Dennis Ndaya
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States.,Polymer Program, Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Reuben Bosire
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States.,Polymer Program, Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Na Kyung Kim
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Rajeswari M Kasi
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States.,Polymer Program, Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Chinedum O Osuji
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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23
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Norikane Y, Hayashino M, Ohnuma M, Abe K, Kikkawa Y, Saito K, Manabe K, Miyake K, Nakano M, Takada N. Photo-Induced Crawling Motion of Azobenzene Crystals on Modified Gold Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:14177-14185. [PMID: 34808058 DOI: 10.1021/acs.langmuir.1c02494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Photo-induced crawling motion of a crystal of 3,3'-dimethylazobenzene (DMAB) on gold surfaces having different surface properties and various patterns was studied. DMAB crystals crawl continuously when exposed to UV and visible lights simultaneously from different directions. On a gold surface functionalized by a thiol having a hydroxyl group at the terminal (16-hydroxy-1-hexadecanethiol (HOC16SH)), the crystals crawled with a relatively high velocity (ca. 4 μm min-1), and they changed the crystal shape while keeping a distinct crystal face. On a gold surface functionalized by a thiol having an alkyl chain terminal (1-hexadecanethiol (C16SH)), the crawling was observed with a slower velocity (ca. 1.5 μm min-1). However, the shape of the crystals became a droplet-like shape soon after the irradiation started, and the shape persisted during the motion. Light intensity dependence of the crawling velocity of the droplet-like crystal on this surface showed that UV light has stronger dependence for the motion than the visible light. On a substrate with a stripe pattern of alternating C16SH-modified gold and hexadecyltrimethylsilane (HDTMS)-modified glass, crystals crawled only on the surface of the C16SH-modified gold, which may be due to the wettability hysteresis at the surface. On a substrate with a stripe pattern of HOC16SH-modified gold and HDTMS-modified glass, crystals were attracted to the gold side. On a gold substrate with a periodic pattern of different height (ca. 50 nm) but having a uniform treatment with C16SH, crystals crawled up and down the steps without significant disturbance at the boundary of the step. Therefore, wettability of the surface has a greater impact on controlling the motion of the crystal than the surface structure. The present results not only unveil the crawling behavior on various surfaces but also offer a guide to controlling the motion toward applications for novel carriage vehicles to transport molecules/objects on a surface.
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Affiliation(s)
- Yasuo Norikane
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Masaru Hayashino
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Mio Ohnuma
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Koji Abe
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Yoshihiro Kikkawa
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Koichiro Saito
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Kengo Manabe
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Koji Miyake
- Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8564, Japan
| | - Miki Nakano
- Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8564, Japan
| | - Naoki Takada
- Research Institute for Energy Conservation, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8564, Japan
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24
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Koike M, Aizawa M, Minamikawa H, Shishido A, Yamamoto T. Photohardenable Pressure-Sensitive Adhesives using Poly(methyl methacrylate) containing Liquid Crystal Plasticizers. ACS APPLIED MATERIALS & INTERFACES 2021; 13:39949-39956. [PMID: 34383463 DOI: 10.1021/acsami.1c11634] [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
Hardenable pressure-sensitive adhesives, which show pressure-sensitive adhesion state with weak adhesion strength in their initial semisolid state and general adhesion state with strong adhesion strength in their hardened state, are desirable in various industrial fields to improve efficiency of manufacturing and recycling products. Here we developed novel photohardenable pressure-sensitive adhesives triggered by photoplasticization of poly(methyl methacrylate) containing photoresponsive liquid crystal (nematic and smectic E) plasticizers at various ratios. It was found that photoplasticization, which is the photoinduced reduction of glass transition temperature and hardness of polymers, could be repeatedly induced by alternate irradiation with ultraviolet (UV) and visible (Vis) light in all mixtures, regardless of the phase structures of the photoresponsive plasticizers. Upon photoplasticization under UV-light irradiation, all mixtures exhibited glassy-to-rubbery transition to a pressure-sensitive adhesion state under appropriate conditions. Upon irradiation of the photoplasticized samples with Vis light, the samples recovered their initial hardened state, recovering the glassy nature with elastic moduli. The adhesion strength of the samples in the hardened state was significantly influenced by the phase structures of the plasticizers. When a photoresponsive plasticizer exhibited the smectic E phase, which is a highly ordered liquid-crystalline phase, the adhesion strength was remarkably larger than those of the case using the plasticizers showing nematic and crystalline phases. This result was reasonably explained in terms of the suppressed bleed-out of the photoresponsive plasticizers from the polymer and the good mechanical properties of the mixture stemming from the characteristics of the smectic E phase. Furthermore, through the reversibility of a photoplasticization process, we achieved a photoinduced reduction of the adhesion strength by UV irradiation of the samples in the hardened state. Photohardenable pressure-sensitive adhesives with reversibility has been developed using a commodity plastic just by adding the photoresponsive plasticizer showing the smectic E phase.
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Affiliation(s)
- Mioka Koike
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-12, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Miho Aizawa
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Hiroyuki Minamikawa
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Atsushi Shishido
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-12, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Takahiro Yamamoto
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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Norikane Y, Hayashino M, Ohnuma M, Abe K, Kikkawa Y, Saito K, Manabe K, Miyake K, Nakano M, Takada N. Effect of Surface Properties on the Photo-Induced Crawling Motion of Azobenzene Crystals on Glass Surfaces. Front Chem 2021; 9:684767. [PMID: 34422758 PMCID: PMC8374144 DOI: 10.3389/fchem.2021.684767] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 07/02/2021] [Indexed: 11/30/2022] Open
Abstract
Photo-induced crawling motion of a crystal of 3,3′-dimethylazobenzene (DMAB) on a glass substrate having different surface properties was studied. When exposed to UV and visible lights simultaneously from different directions, crystals crawl continuously on a glass surface. On a hydrophilic surface, the crystals crawled faster than those on other surfaces but crystals showed spreading while they moved. On hydrophobic surfaces, on the other hand, the crystals showed little shape change and slower crawling motion. The contact angles of the liquid phase of DMAB on surface-modified glass substrates showed positive correlation with the water contact angles. The interaction of melted azobenzene with glass surfaces plays an important role for the crawling motion. We proposed models to explain the asymmetric condition that leads to the directional motion. Specifically by considering the penetration length of UV and visible light sources, it was successfully shown that the depth of light penetration is different at the position of a crystal. This creates a nonequilibrium condition where melting and crystallization are predominant in the same crystal.
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Affiliation(s)
- Yasuo Norikane
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.,Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Ibaraki, Japan
| | - Masaru Hayashino
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan.,Graduate School of Pure and Applied Sciences, University of Tsukuba, Ibaraki, Japan
| | - Mio Ohnuma
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Koji Abe
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Yoshihiro Kikkawa
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Koichiro Saito
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Kengo Manabe
- Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Koji Miyake
- Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Miki Nakano
- Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Naoki Takada
- Research Institute for Energy Conservation, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
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26
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Abstract
Despite their great utility in synthetic and materials chemistry, Diels-Alder (DA) and retro Diels-Alder (rDA) reactions have been vastly unexplored in promoting self-assembly processes. Herein we describe the first example of a retro Diels-Alder (rDA) reaction-triggered self-assembly method. Release of the steric bulkiness associated with the bridged bicyclic DA adduct by the rDA reaction allowed generation of two building blocks that spontaneously self-assembled to form a supramolecular polymer. By employing photopolymerizable lipid building blocks, we demonstrated the efficiency of the rDA-based self-assembly strategy. Generation of reactive functional groups (maleimide and furan) that can be used for further modification of the supramolecular polymer is an additional meritorious feature of the rDA-based approach. Advantage was taken of reactive functional groups to fabricate stimulus-responsive selective and tunable colorimetric sensors. The strategy developed in this study should be useful for the design of systems that participate in triggered molecular assembly. Despite their great utility in synthetic and materials chemistry, Diels-Alder and retro Diels-Alder reactions have been vastly unexplored in promoting self-assembly processes. Here the authors show the release of steric bulkiness associated with a bridged bicyclic Diels Alder adduct by the retro Diels-Alder reaction that allowed generation of two building blocks that spontaneously self-assembled to form a supramolecular polymer.
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Lu GH, Huang TC, Hsueh HC, Yang SC, Cho TW, Chou HH. Novel N-transfer reagent for converting α-amino acid derivatives to α-diazo compounds. Chem Commun (Camb) 2021; 57:4839-4842. [PMID: 33870368 DOI: 10.1039/d1cc01285a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A novel universal N-transfer reagent for direct and effective transformation of α-amino ketones, acetamides, and esters to the corresponding α-diazo products under mild basic conditions has been developed. This one-step synthetic approach not only allows for generation of α-substituted-α-diazo carbonyl compounds from α-amino acid derivatives but also permits preparation of α-diazo dipeptides from N-terminal dipeptides (32 examples, up to 91%).
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Affiliation(s)
- Guan-Han Lu
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan.
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Bai R, Ocegueda E, Bhattacharya K. Photochemical-induced phase transitions in photoactive semicrystalline polymers. Phys Rev E 2021; 103:033003. [PMID: 33862748 DOI: 10.1103/physreve.103.033003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 02/26/2021] [Indexed: 11/07/2022]
Abstract
The emergent photoactive materials obtained through photochemistry make it possible to directly convert photon energy to mechanical work. There has been much recent work in developing appropriate materials, and a promising system is semicrystalline polymers of the photoactive molecule azobenzene. We develop a phase field model with two order parameters for the crystal-melt transition and the trans-cis photoisomerization to understand such materials, and the model describes the rich phenomenology. We find that the photoreaction rate depends sensitively on temperature: At temperatures below the crystal-melt transition temperature, photoreaction is collective, requires a critical light intensity, and shows an abrupt first-order phase transition manifesting nucleation and growth; at temperatures above the transition temperature, photoreaction is independent and follows first-order kinetics. Further, the phase transition depends significantly on the exact forms of spontaneous strain during the crystal-melt and trans-cis transitions. A nonmonotonic change of photopersistent cis ratio with increasing temperature is observed accompanied by a reentrant crystallization of trans below the melting temperature. A pseudo phase diagram is subsequently presented with varying temperature and light intensity along with the resulting actuation strain. These insights can assist the further development of these materials.
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Affiliation(s)
- Ruobing Bai
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA
| | - Eric Ocegueda
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA
| | - Kaushik Bhattacharya
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA
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Liu L, Liu Z, Ren Y, Zou X, Peng W, Li W, Wu Y, Zheng S, Wang X, Yan F. A Superstrong and Reversible Ionic Crystal-Based Adhesive Inspired by Ice Adhesion. Angew Chem Int Ed Engl 2021; 60:8948-8959. [PMID: 33527627 DOI: 10.1002/anie.202100984] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Indexed: 12/18/2022]
Abstract
In this study, we developed a superstrong and reversible adhesive, which can possess a high bonding strength in the "adhesive" state and detach with the application of heating. An ionic crystal (IC) gel, in which an IC was immobilized within a soft-polymer matrix, were synthesized via in situ photo-crosslinking of a precursor solution composed of N, N-dimethyl acrylamide (DMAA) and a melted IC. The obtained IC gel is homogenous and transparent at melt point. When cooled to the phase transition temperature of the IC, the gel turns into the adhesive with the adhesion strength of 5.82 MPa (on glasses), due to the excellent wetting of melted gel and a thin layer of crystalline IC with high cohesive strength formed on the substrates. The synergistic effects between IC, polymer networks and substrates were investigated by solid state 1 H NMR and molecular dynamics simulation. Such an adhesive layer is reversable and can be detached by heating and subsequent re-adhesion via cooling. This study proposed the new design of removable adhesives, which can be used in dynamic and complex environments.
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Affiliation(s)
- Lili Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Ziyang Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Yongyuan Ren
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Xiuyang Zou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Wansu Peng
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Weizheng Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Yiqing Wu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Sijie Zheng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Xiaoliang Wang
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Feng Yan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
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Liu L, Liu Z, Ren Y, Zou X, Peng W, Li W, Wu Y, Zheng S, Wang X, Yan F. A Superstrong and Reversible Ionic Crystal‐Based Adhesive Inspired by Ice Adhesion. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100984] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Lili Liu
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 China
| | - Ziyang Liu
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 China
| | - Yongyuan Ren
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 China
| | - Xiuyang Zou
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 China
| | - Wansu Peng
- School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Weizheng Li
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 China
| | - Yiqing Wu
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 China
| | - Sijie Zheng
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 China
| | - Xiaoliang Wang
- School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
| | - Feng Yan
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou 215123 China
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32
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Bio-Inspired Soft Robotics: Tunable Photo-Actuation Behavior of Azo Chromophore Containing Liquid Crystalline Elastomers. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11031233] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Bio-inspiration relentlessly sparks the novel ideas to develop innovative soft robotic structures from smart materials. The conceptual soft robotic designs inspired by biomimetic routes have resulted in pioneering research contributions based on the understanding of the material selection and actuation properties. In an attempt to overcome the hazardous injuries, soft robotic systems are used subsequently to ensure safe human–robot interaction. In contrast to dielectric elastomer actuators, prolific efforts were made by understanding the photo-actuating properties of liquid crystalline elastomers (LCEs) containing azo-derivatives to construct mechanical structures and tiny portable robots for specific technological applications. The structure and material properties of these stimuli-responsive polymers can skillfully be controlled by light. In this short technical note, we highlight the potential high-tech importance and the photo-actuation behavior of some remarkable LCEs with azobenzene chromophores.
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33
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Liu Z, Cheng J, Zhang J. An Efficiently Reworkable Thermosetting Adhesive Based on Photoreversible [4+4] Cycloaddition Reaction of Epoxy‐Based Prepolymer with Four Anthracene End Groups. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.202000298] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ziyu Liu
- Key Laboratory of Carbon Fiber and Functional Polymers Ministry of Education Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Jue Cheng
- Key Laboratory of Carbon Fiber and Functional Polymers Ministry of Education Beijing University of Chemical Technology Beijing 100029 P. R. China
| | - Junying Zhang
- Key Laboratory of Carbon Fiber and Functional Polymers Ministry of Education Beijing University of Chemical Technology Beijing 100029 P. R. China
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34
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Yue Y, Azumi R, Norikane Y. Fatigue‐Resistant Crosslinked Azopolymers with Inhibited H‐Aggregation for Efficient Photopatterning. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Youfeng Yue
- Research Institute for Advanced Electronics and Photonics National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Ibaraki 305-8565 Japan
| | - Reiko Azumi
- Research Institute for Advanced Electronics and Photonics National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Ibaraki 305-8565 Japan
| | - Yasuo Norikane
- Research Institute for Advanced Electronics and Photonics National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Ibaraki 305-8565 Japan
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35
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Xu X, Zhang P, Wu B, Xing Y, Shi K, Fang W, Yu H, Wang G. Photochromic Dendrimers for Photoswitched Solid-To-Liquid Transitions and Solar Thermal Fuels. ACS APPLIED MATERIALS & INTERFACES 2020; 12:50135-50142. [PMID: 33085470 DOI: 10.1021/acsami.0c14160] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Dendrimers are well-defined, highly branched macromolecules that have been widely applied in the fields of catalysis, sensing, and biomedicine. Here, we present a novel multifunctional photochromic dendrimer fabricated through grafting azobenzene units onto dendrimers, which not only enables controlled switching of adhesives and effective repair of coating scratches but also realizes high-performance solar energy storage and on-demand heat release. The switchable adhesives and healable coatings of azobenzene-containing dendrimers are attributed to the reversible solid-to-liquid transitions because trans-isomers and cis-isomers have different glass transition temperatures. The adhesion strengths increase significantly with the increase in dendrimer generations, wherein the adhesion strength of fifth-generation photochromic dendrimers (G5-Azo) can reach up to 1.62 MPa, five times higher than that of pristine azobenzenes. The solar energy storage and heat release of dendrimer solar thermal fuels, the isomers of which possess different chemical energies, can be also enhanced remarkably with the amplification of azobenzene groups on dendrimers. The storage energy density of G5-Azo can reach 59 W h kg-1, which is much higher than that of pristine azobenzenes (36 W h kg-1). The G5-Azo fuels exhibit a 5.2 °C temperature difference between cis-isomers and trans-isomers. These findings provide a new perspective and tremendously attractive avenue for the fabrication of photoswitchable adhesives and coatings and solar thermal fuels with dendrimer structures.
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Affiliation(s)
- Xingtang Xu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Peng Zhang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Bo Wu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Youmei Xing
- Hangzhou Greenda Electronic Materials Company Ltd., Hangzhou 310051, China
| | - Ke Shi
- Hangzhou Greenda Electronic Materials Company Ltd., Hangzhou 310051, China
| | - Weihua Fang
- Hangzhou Greenda Electronic Materials Company Ltd., Hangzhou 310051, China
| | - Haifeng Yu
- Department of Materials Science and Engineering, College of Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China
| | - Guojie Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
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36
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Liang SF, Nie C, Yan J, Zhang QJ, Wu S. Photoinduced Reversible Solid-to-Liquid Transitions and Directional Photofluidization of Azobenzene-containing Polymers. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-021-2519-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kortekaas L, Simke J, Kurka DW, Ravoo BJ. Rapid Photoswitching of Low Molecular Weight Arylazoisoxazole Adhesives. ACS APPLIED MATERIALS & INTERFACES 2020; 12:32054-32060. [PMID: 32551520 DOI: 10.1021/acsami.0c03767] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Adhesion is one of the most ubiquitous practical applications at surfaces. With today's society calling increasingly for more reusable and "green" alternatives, the demand for readily reversible adhesives has triggered many studies into this field, in particular by incorporating molecular photoswitches into composite materials. Responsive polymers can act as reversible adhesives, but their employment brings about synthetic drawbacks and challenges in reproducibility and reusability. Here, our results demonstrate that even a low molecular weight photoswitch can serve as an on-demand adhesive when the intermolecular interactions are sufficiently strong. We show that readily accessible arylazoisoxazoles display a fast photoreversible solid-to-liquid phase transition and perform as excellent photoreversible adhesives, with a remarkable durability over 10 immediate reuse cycles without a loss in adhesive strength or an increase in the unprecedented response time. Furthermore, the versatility of photoreversible adhesion is shown at various surfaces ranging from polymeric materials to metals, demonstrating a wide field of potential application.
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Affiliation(s)
- Luuk Kortekaas
- Center for Soft Nanoscience and Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Busso-Peus-Straße 10, 48149 Münster, Germany
| | - Julian Simke
- Center for Soft Nanoscience and Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Busso-Peus-Straße 10, 48149 Münster, Germany
| | - Dustin W Kurka
- Center for Soft Nanoscience and Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Busso-Peus-Straße 10, 48149 Münster, Germany
| | - Bart Jan Ravoo
- Center for Soft Nanoscience and Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Busso-Peus-Straße 10, 48149 Münster, Germany
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38
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Kuenstler AS, Clark KD, Read de Alaniz J, Hayward RC. Reversible Actuation via Photoisomerization-Induced Melting of a Semicrystalline Poly(Azobenzene). ACS Macro Lett 2020; 9:902-909. [PMID: 35648524 DOI: 10.1021/acsmacrolett.0c00328] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Photoisomerization of azobenzene in polymer matrices is a powerful method to convert photon energy into mechanical work. While most previous studies have focused on incorporating azobenzene within amorphous or liquid crystalline materials, the limited extents of molecular ordering and correspondingly modest enthalpy changes upon switching in such systems has limited the achievable energy densities. In this work, we introduce a semicrystalline main-chain poly(azobenzene), where photoisomerization is capable of reversibly triggering melting and recrystallization under essentially isothermal conditions. These materials can be drawn into aligned fibers, yielding optically driven two-way shape memory actuators capable of reversible bending.
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Affiliation(s)
- Alexa S. Kuenstler
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Kyle D. Clark
- Department of Chemistry and Biochemistry, University of California Santa Barbara Santa Barbara, California 93106, United States
| | - Javier Read de Alaniz
- Department of Chemistry and Biochemistry, University of California Santa Barbara Santa Barbara, California 93106, United States
| | - Ryan C. Hayward
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
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39
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Sunil BN, Behera PK, Achalkumar AS, Shanker G, Hegde G. Influence of inter- and intramolecular H-bonding on the mesomorphic and photoswitching behaviour of ( E)-4-((4-(hexyloxy)phenyl)diazenyl)- N-phenyl benzamides. RSC Adv 2020; 10:20222-20230. [PMID: 35520455 PMCID: PMC9054115 DOI: 10.1039/d0ra03024d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 05/17/2020] [Indexed: 11/21/2022] Open
Abstract
We report on the synthesis, phase behaviour and photoswitching studies of new azo linked rod-shaped molecules. These novel materials consist of three phenyl rings separated by a diazo, amide linkage with a hexyloxy tail and 2,4-substituents at either end of the phenyl ring. The mesomorphic behaviours, phase transition temperature including the enthalpies were characterized by polarizing optical microscope (POM) and differential scanning calorimetry (DSC). The influence of inter- and intramolecular hydrogen bonding on mesomorphic and photoisomerization was studied. Photoisomerization studies carried out both in the solid and liquid phase show the quick E-Z transition with prolonged thermal back relaxation (Z-E) by using UV-Visible spectroscopy. This interesting behaviour could be attributed to the presence of the hexyloxy tail, lateral electron withdrawing group and the influence of inter- or intramolecular hydrogen bonding. Excellent bright and dark states were accomplished using one of these materials in optical storage device. Further tuning is necessary to employ them for real applications.
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Affiliation(s)
- B N Sunil
- Center for Nano-materials and Displays, BMS R and D Centre, B.M.S. College of Engineering Bangalore 560019 India
- Department of Chemistry, B.M.S. College of Engineering Bangalore 560019 India
| | - Paresh Kumar Behera
- Department of Chemistry, Indian Institute of Technology Guwahati Guwahati 781039 Assam India
| | - Ammathnadu S Achalkumar
- Department of Chemistry, Indian Institute of Technology Guwahati Guwahati 781039 Assam India
| | - G Shanker
- Department of Chemistry, Jnana Bharathi Campus, Bangalore University Bangalore 560056 India
| | - Gurumurthy Hegde
- Center for Nano-materials and Displays, BMS R and D Centre, B.M.S. College of Engineering Bangalore 560019 India
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40
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Xu G, Li S, Liu C, Wu S. Photoswitchable Adhesives Using Azobenzene‐Containing Materials. Chem Asian J 2020; 15:547-554. [DOI: 10.1002/asia.201901655] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Guofeng Xu
- CAS Key Laboratory of Soft Matter ChemistryHefei National Laboratory for Physical Sciences at the MicroscaleAnhui Key Laboratory of Optoelectronic Science and TechnologyDepartment of Polymer Science and EngineeringUniversity of Science and Technology of China Jinzhai Road 96 Hefei 230026 China
| | - Shuxiu Li
- CAS Key Laboratory of Soft Matter ChemistryHefei National Laboratory for Physical Sciences at the MicroscaleAnhui Key Laboratory of Optoelectronic Science and TechnologyDepartment of Polymer Science and EngineeringUniversity of Science and Technology of China Jinzhai Road 96 Hefei 230026 China
| | - Chengwei Liu
- CAS Key Laboratory of Soft Matter ChemistryHefei National Laboratory for Physical Sciences at the MicroscaleAnhui Key Laboratory of Optoelectronic Science and TechnologyDepartment of Polymer Science and EngineeringUniversity of Science and Technology of China Jinzhai Road 96 Hefei 230026 China
| | - Si Wu
- CAS Key Laboratory of Soft Matter ChemistryHefei National Laboratory for Physical Sciences at the MicroscaleAnhui Key Laboratory of Optoelectronic Science and TechnologyDepartment of Polymer Science and EngineeringUniversity of Science and Technology of China Jinzhai Road 96 Hefei 230026 China
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Yang B, Cai F, Huang S, Yu H. Athermal and Soft Multi‐Nanopatterning of Azopolymers: Phototunable Mechanical Properties. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914201] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Bowen Yang
- Department of Material Science and Engineering College of Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Peking University Beijing 100871 China
| | - Feng Cai
- Department of Material Science and Engineering College of Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Peking University Beijing 100871 China
| | - Shuai Huang
- Department of Material Science and Engineering College of Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Peking University Beijing 100871 China
| | - Haifeng Yu
- Department of Material Science and Engineering College of Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Peking University Beijing 100871 China
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42
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Yang B, Cai F, Huang S, Yu H. Athermal and Soft Multi‐Nanopatterning of Azopolymers: Phototunable Mechanical Properties. Angew Chem Int Ed Engl 2020; 59:4035-4042. [DOI: 10.1002/anie.201914201] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 11/30/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Bowen Yang
- Department of Material Science and Engineering College of Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Peking University Beijing 100871 China
| | - Feng Cai
- Department of Material Science and Engineering College of Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Peking University Beijing 100871 China
| | - Shuai Huang
- Department of Material Science and Engineering College of Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Peking University Beijing 100871 China
| | - Haifeng Yu
- Department of Material Science and Engineering College of Engineering and Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Peking University Beijing 100871 China
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43
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Ito S, Akiyama H, Mori M, Yoshida M, Kihara H. Semicrystalline poly(vinyl ether)s with high and phototunable glass transition temperature: application for thermally stable and reworkable adhesives. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20190153] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Shotaro Ito
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST Chugoku) 3‐11‐32, Kagamiyama, Higashihiroshima Hiroshima 739‐0046 Japan
| | - Haruhisa Akiyama
- Research Institute for Sustainable ChemistryNational Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1‐1‐1 Higashi, Tsukuba, Ibaraki 305‐8565 Japan
| | - Miyuki Mori
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST Chugoku) 3‐11‐32, Kagamiyama, Higashihiroshima Hiroshima 739‐0046 Japan
| | - Masaru Yoshida
- Research Institute for Sustainable ChemistryNational Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1‐1‐1 Higashi, Tsukuba, Ibaraki 305‐8565 Japan
| | - Hideyuki Kihara
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST Chugoku) 3‐11‐32, Kagamiyama, Higashihiroshima Hiroshima 739‐0046 Japan
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44
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Gao L, Hao Y, Zhang X, Huang X, Wang T, Hao H. Polymorph induced diversity of photomechanical motions of molecular crystals. CrystEngComm 2020. [DOI: 10.1039/d0ce00311e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Photomechanical motions of the polymorphs of trans-4,4′-azopyridine are distinct under the influence of different molecular packing and intermolecular interactions.
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Affiliation(s)
- Lei Gao
- National Engineering Research Centre of Industrial Crystallization Technology
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- PR China
| | - Yunhui Hao
- National Engineering Research Centre of Industrial Crystallization Technology
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- PR China
| | - Xiunan Zhang
- National Engineering Research Centre of Industrial Crystallization Technology
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- PR China
| | - Xin Huang
- National Engineering Research Centre of Industrial Crystallization Technology
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- PR China
| | - Ting Wang
- National Engineering Research Centre of Industrial Crystallization Technology
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- PR China
| | - Hongxun Hao
- National Engineering Research Centre of Industrial Crystallization Technology
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- PR China
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45
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Halabi JM, Ahmed E, Catalano L, Karothu DP, Rezgui R, Naumov P. Spatial Photocontrol of the Optical Output from an Organic Crystal Waveguide. J Am Chem Soc 2019; 141:14966-14970. [DOI: 10.1021/jacs.9b07645] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jad Mahmoud Halabi
- New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates
| | - Ejaz Ahmed
- New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates
| | - Luca Catalano
- New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates
| | | | - Rachid Rezgui
- New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates
| | - Panče Naumov
- New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates
- Radcliffe Institute for Advanced Study, Harvard University, 10 Garden Street, Cambridge, Massachusetts 02138, United States
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46
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Vialetto J, Groppi J, La Rosa M, Silvi S, Credi A, Baroncini M. Solution and solid state photochromism in a family of shape persistent azobenzene tetramers functionalized with alkyloxy substituents. Photochem Photobiol Sci 2019; 18:2281-2286. [PMID: 30968923 DOI: 10.1039/c9pp00022d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Shape-persistent azobenzene tetramers functionalized at the periphery with alkyloxy substituents of different lengths have been synthesized and their photochemical behaviour has been investigated. Efficient E→Z photoisomerization of the azobenzene units takes place both in solution and in the solid state, a highly desirable yet uncommon property for azobenzene-type photochromic compounds. The solid state E→Z photoisomerization is accompanied by an isothermal crystal-amorphous phase transformation; successively, anisotropic crystals can be grown upon promoting the Z→E isomerization by thermal annealing of the irradiated samples. These results validate the strategy of engineering multiphotochromic architectures with a rigid star-shaped geometry to preserve the solution-based photoreactivity also in the solid state. The observed unexpected photoinduced alignment makes these materials potentially attractive for the development of photo-patternable and photo-responsive surfaces.
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Affiliation(s)
- Jacopo Vialetto
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Jessica Groppi
- CLAN-Center for Light Activated Nanostructures, Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna, Via Gobetti 101, 40129 Bologna, Italy. and Istituto ISOF-CNR, Via Gobetti 101, 40129 Bologna, Italy
| | - Marcello La Rosa
- CLAN-Center for Light Activated Nanostructures, Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna, Via Gobetti 101, 40129 Bologna, Italy.
| | - Serena Silvi
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Alberto Credi
- CLAN-Center for Light Activated Nanostructures, Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna, Via Gobetti 101, 40129 Bologna, Italy. and Istituto ISOF-CNR, Via Gobetti 101, 40129 Bologna, Italy
| | - Massimo Baroncini
- CLAN-Center for Light Activated Nanostructures, Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna, Via Gobetti 101, 40129 Bologna, Italy. and Istituto ISOF-CNR, Via Gobetti 101, 40129 Bologna, Italy
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47
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Yamauchi M, Yokoyama K, Aratani N, Yamada H, Masuo S. Crystallization‐Induced Emission of Azobenzene Derivatives. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908121] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mitsuaki Yamauchi
- Department of Applied Chemistry for Environment Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
| | - Kosuke Yokoyama
- Department of Applied Chemistry for Environment Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
| | - Naoki Aratani
- Division of Materials Science Nara Institute of Science and Technology 8916-5 Takayama-cho Ikoma 630-0192 Japan
| | - Hiroko Yamada
- Division of Materials Science Nara Institute of Science and Technology 8916-5 Takayama-cho Ikoma 630-0192 Japan
| | - Sadahiro Masuo
- Department of Applied Chemistry for Environment Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
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48
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Yamauchi M, Yokoyama K, Aratani N, Yamada H, Masuo S. Crystallization‐Induced Emission of Azobenzene Derivatives. Angew Chem Int Ed Engl 2019; 58:14173-14178. [DOI: 10.1002/anie.201908121] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 07/25/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Mitsuaki Yamauchi
- Department of Applied Chemistry for Environment Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
| | - Kosuke Yokoyama
- Department of Applied Chemistry for Environment Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
| | - Naoki Aratani
- Division of Materials Science Nara Institute of Science and Technology 8916-5 Takayama-cho Ikoma 630-0192 Japan
| | - Hiroko Yamada
- Division of Materials Science Nara Institute of Science and Technology 8916-5 Takayama-cho Ikoma 630-0192 Japan
| | - Sadahiro Masuo
- Department of Applied Chemistry for Environment Kwansei Gakuin University 2-1 Gakuen Sanda Hyogo 669-1337 Japan
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49
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Kumar P, Srivastava A, Sah C, Devi S, Venkataramani S. Arylazo‐3,5‐dimethylisoxazoles: Azoheteroarene Photoswitches Exhibiting High
Z
‐Isomer Stability, Solid‐State Photochromism, and Reversible Light‐Induced Phase Transition. Chemistry 2019; 25:11924-11932. [DOI: 10.1002/chem.201902150] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/01/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Pravesh Kumar
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER) Mohali Sector 81, SAS Nagar, Knowledge City Manauli 140306 Punjab India
| | - Anjali Srivastava
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER) Mohali Sector 81, SAS Nagar, Knowledge City Manauli 140306 Punjab India
| | - Chitranjan Sah
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER) Mohali Sector 81, SAS Nagar, Knowledge City Manauli 140306 Punjab India
| | - Sudha Devi
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER) Mohali Sector 81, SAS Nagar, Knowledge City Manauli 140306 Punjab India
| | - Sugumar Venkataramani
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER) Mohali Sector 81, SAS Nagar, Knowledge City Manauli 140306 Punjab India
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50
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Weis P, Hess A, Kircher G, Huang S, Auernhammer GK, Koynov K, Butt H, Wu S. Effects of Spacers on Photoinduced Reversible Solid‐to‐Liquid Transitions of Azobenzene‐Containing Polymers. Chemistry 2019; 25:10946-10953. [DOI: 10.1002/chem.201902273] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Indexed: 12/29/2022]
Affiliation(s)
- Philipp Weis
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Andreas Hess
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
- Present Address: Institute of ChemistryUniversity of Potsdam Karl-Liebknecht-Straße 24–25 14476 Potsdam Germany
| | - Gunnar Kircher
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Shilin Huang
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
- Present Address: School of Materials Science and EngineeringSun Yat-sen University No. 135, Xingang Xi Road Guangzhou 510275 P.R. China
| | - Günter K. Auernhammer
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
- Present Address: Leibniz-Institut für Polymerforschung Hohe Str. 6 01069 Dresden Germany
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Hans‐Jürgen Butt
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Si Wu
- CAS Key Laboratory of Soft Matter ChemistryHefei National Laboratory for Physical Sciences at the MicroscaleDepartment of Polymer Science and EngineeringUniversity of Science and Technology of China Jinzhai Road 96 Hefei 230026 P.R. China
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
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