1
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Li X, Cho S, Han GGD. Light-Responsive Solid-Solid Phase Change Materials for Photon and Thermal Energy Storage. ACS MATERIALS AU 2022; 3:37-42. [PMID: 36647455 PMCID: PMC9838185 DOI: 10.1021/acsmaterialsau.2c00055] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 01/19/2023]
Abstract
We report a series of adamantane-functionalized azobenzenes that store photon and thermal energy via reversible photoisomerization in the solid state for molecular solar thermal (MOST) energy storage. The adamantane unit serves as a 3D molecular separator that enables the spatial separation of azobenzene groups and results in their facile switching even in the crystalline phase. Upon isomerization, the phase transition from crystalline to amorphous solid occurs and contributes to additional energy storage. The exclusively solid-state MOST compounds with solid-solid phase transition overcome a major challenge of solid-liquid phase transition materials that require encapsulation for practical applications.
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2
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Wang H, Feng Y, Gao J, Fang W, Ge J, Yang X, Zhai F, Yu Y, Feng W. Metallic-Ion Controlled Dynamic Bonds to Co-Harvest Isomerization Energy and Bond Enthalpy for High-Energy Output of Flexible Self-Heated Textile. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2201657. [PMID: 35491498 PMCID: PMC9284279 DOI: 10.1002/advs.202201657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/12/2022] [Indexed: 06/11/2023]
Abstract
Molecular light-harvesting capabilities and the production of low-temperature heat output are essential for flexible self-heated textiles. An effective strategy to achieve these characteristics is to introduce photoresponsive molecular interactions (photodynamic bonds) to increase the energy storage capacity and optimize the low-temperature photochromic kinetics. In this study, a series of sulfonic-grafted azobenzene-based polymers interacted with different metal ions (PAzo-M, M = Mg, Ca, Ni, Zn, Cu, and Fe) to optimize the energy level and isomerization kinetics of these polymers is designed and prepared. Photoinduced formation and dissociation of MO dynamic bonds enlarge the energy gap (∆E) between trans and cis isomers for high-energy storage and favor a high rate of isomerization for low-temperature heat release. The suitable binding energy and high ∆E enable PAzo-M to store and release isomerization energy and bond enthalpy even in a low-temperature (-5 °C) environment. PAzo-Mg possesses the highest energy storage density of 408.6 J g-1 (113.5 Wh kg-1 ). A flexible textile coated with PAzo-Mg can provide a high rise in temperature of 7.7-12.5 °C in a low-temperature (-5.0 to 5.0 °C) environment by selectively self-releasing heat indoors and outdoors. The flexible textile provides a new pathway for wearable thermal management devices.
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Affiliation(s)
- Hui Wang
- School of Materials Science and EngineeringTianjin UniversityTianjin300350China
| | - Yiyu Feng
- School of Materials Science and EngineeringTianjin UniversityTianjin300350China
- Key Laboratory of Materials Processing and MoldMinistry of EducationZhengzhou UniversityZhengzhouHenan450002China
| | - Jian Gao
- School of Materials Science and EngineeringTianjin UniversityTianjin300350China
| | - Wenyu Fang
- School of Materials Science and EngineeringTianjin UniversityTianjin300350China
| | - Jing Ge
- School of Materials Science and EngineeringTianjin UniversityTianjin300350China
| | - Xiaoyu Yang
- School of Materials Science and EngineeringTianjin UniversityTianjin300350China
| | - Fei Zhai
- School of Materials Science and EngineeringTianjin UniversityTianjin300350China
| | - Yunfei Yu
- School of Materials Science and EngineeringTianjin UniversityTianjin300350China
| | - Wei Feng
- School of Materials Science and EngineeringTianjin UniversityTianjin300350China
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3
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Xu X, Wang G. Molecular Solar Thermal Systems towards Phase Change and Visible Light Photon Energy Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107473. [PMID: 35132792 DOI: 10.1002/smll.202107473] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Indexed: 06/14/2023]
Abstract
Molecular solar thermal (MOST) systems have attracted tremendous attention for solar energy conversion and storage, which can generate high-energy metastable isomers upon capturing photon energy, and release the stored energy as heat on demand during back conversion. However, the pristine molecular photoswitches are limited by low storage energy density and UV light photon energy storage. Recently, numerous pioneering works have been focused on the development of MOST systems towards phase change (PC) and visible light photon energy storage to increase their properties. On the one hand, the strategy of simultaneously capturing isomerization enthalpy and PC energy between solid and liquid can not only offer high latent heat, but also promote the development of sustainable energy systems. On the other hand, the efficient photon energy storage in the visible light range opens a tremendously fascinating avenue to fabricate MOST systems powered under natural sunlight. Here, the recent advances of MOST systems towards PC and visible light photon energy storage are systematically summarized, the most promising advantages and current challenges are analyzed, and emerging strategies and future research directions are proposed.
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Affiliation(s)
- Xingtang Xu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Guojie Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
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4
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Griffiths K, Halcovitch NR, Griffin JM. Effect of Transition Metal Substitution on the Flexibility and Thermal Properties of MOF-Based Solid-Solid Phase Change Materials. Inorg Chem 2021; 60:12950-12960. [PMID: 34492769 DOI: 10.1021/acs.inorgchem.1c01364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of azobenzene-loaded metal-organic frameworks were synthesized with the general formula M2(BDC)2(DABCO)(AB)x (M = Zn, Co, Ni, and Cu; BDC = 1,4-benzenedicarboxylate; DABCO = 1,4-diazabicyclo[2.2.2]octane; and AB = azobenzene), herein named M-1⊃ABx. Upon occlusion of AB, each framework undergoes guest-induced breathing, whereby the pores contract around the AB molecules forming a narrow-pore (np) framework. The loading level of the framework is found to be very sensitive to the synthetic protocol and although the stable loading level is close to M-1⊃AB1.0, higher loading levels can be achieved for the Zn, Co, and Ni frameworks prior to vacuum treatment, with a maximum composition for the Zn framework of Zn-1⊃AB1.3. The degree of pore contraction upon loading is modulated by the inherent flexibility of the metal-carboxylate paddlewheel unit in the framework, with the Zn-1⊃AB1.0 showing the biggest contraction of 6.2% and the more rigid Cu-1⊃AB1.0 contracting by only 1.7%. Upon heating, each composite shows a temperature-induced phase transition to an open-pore (op) framework, and the enthalpy and onset temperatures of the phase transition are affected by the framework flexibility. For all composites, UV irradiation causes trans → cis isomerization of the occluded AB molecules. The population of cis-AB at the photostationary state and the thermal stability of the occluded cis-AB molecules are also found to correlate with the flexibility of the framework. Over a full heating-cooling cycle between 0 and 200 °C, the energy stored within the metastable cis-AB molecules is released as heat, with a maximum energy density of 28.9 J g-1 for Zn-1⊃AB1.0. These findings suggest that controlled confinement of photoswitches within flexible frameworks is a potential strategy for the development of solid-solid phase change materials for energy storage.
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Affiliation(s)
- Kieran Griffiths
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, U.K
| | | | - John M Griffin
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, U.K.,Materials Science Institute, Lancaster University, Lancaster LA1 4YB, U.K
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5
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Xu X, Wu B, Zhang P, Xing Y, Shi K, Fang W, Yu H, Wang G. Arylazopyrazole-Based Dendrimer Solar Thermal Fuels: Stable Visible Light Storage and Controllable Heat Release. ACS APPLIED MATERIALS & INTERFACES 2021; 13:22655-22663. [PMID: 33970599 DOI: 10.1021/acsami.1c05163] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Solar thermal fuels offer a closed cycle and a renewable energy storage strategy by harvesting photon energy within the chemical conformations of molecules and retrieving energy by an induced release of heat. However, the majority of reports are limited to the ultraviolet light storage, which potentially interferes with the surrounding environment and reduces the material lifetime. Here, we present a novel arylazopyrazole (AAP)-containing dendrimer that not only addresses the hindrance of visible light storage for solar thermal fuels but also exhibits outstanding performances of abundant energy conversion and stable storage, which are attributed to the substantial absorbance in visible wavelengths of para-thiomethyl-substituted AAP groups and the stability of cis isomers, respectively. The energy density of the dendrimer fuel after efficiently harvesting blue light (405 nm) is as high as 0.14 MJ kg-1 (67 kJ mol-1), and the storage half-life of the fabricated dendrimer film can reach up to 12.9 days. Moreover, the heat release of the dendrimer film can be triggered by different stimuli (light and heat). The dendrimer film displays a 6.5 °C temperature difference between trans isomers and cis isomers during green light irradiation. Our work provides a fascinating avenue to fabricate visible light storage solar thermal fuels and unlocks the possibility of developing natural sunlight storage in the future.
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Affiliation(s)
- Xingtang Xu
- 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
| | - Peng Zhang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Youmei Xing
- Hangzhou Greenda Electronic Materials Co., Ltd., Hangzhou 310051, China
| | - Ke Shi
- Hangzhou Greenda Electronic Materials Co., Ltd., Hangzhou 310051, China
| | - Weihua Fang
- Hangzhou Greenda Electronic Materials Co., 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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6
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Zhang ZY, He Y, Wang Z, Xu J, Xie M, Tao P, Ji D, Moth-Poulsen K, Li T. Photochemical Phase Transitions Enable Coharvesting of Photon Energy and Ambient Heat for Energetic Molecular Solar Thermal Batteries That Upgrade Thermal Energy. J Am Chem Soc 2020; 142:12256-12264. [DOI: 10.1021/jacs.0c03748] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Zhao-Yang Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yixin He
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhihang Wang
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Gothenburg, Sweden
| | - Jiale Xu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Mingchen Xie
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Peng Tao
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Deyang Ji
- Institute of Molecular Aggregation Science, Tianjin University, Tianjin 300072 China
| | - Kasper Moth-Poulsen
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Gothenburg, Sweden
| | - Tao Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
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7
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Gerkman MA, Gibson RSL, Calbo J, Shi Y, Fuchter MJ, Han GGD. Arylazopyrazoles for Long-Term Thermal Energy Storage and Optically Triggered Heat Release below 0 °C. J Am Chem Soc 2020; 142:8688-8695. [DOI: 10.1021/jacs.0c00374] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mihael A. Gerkman
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02453, United States
| | - Rosina S. L. Gibson
- Molecular Sciences Research Hub, Department of Chemistry, Imperial College London, Wood Lane, London W12 0BZ, United Kingdom
| | - Joaquín Calbo
- Instituto de Ciencia Molecular, Universidad de Valencia, 46890 Paterna, Spain
| | - Yuran Shi
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02453, United States
| | - Matthew J. Fuchter
- Molecular Sciences Research Hub, Department of Chemistry, Imperial College London, Wood Lane, London W12 0BZ, United Kingdom
| | - Grace G. D. Han
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02453, United States
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8
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Kunz A, Heindl AH, Dreos A, Wang Z, Moth-Poulsen K, Becker J, Wegner HA. Intermolecular London Dispersion Interactions of Azobenzene Switches for Tuning Molecular Solar Thermal Energy Storage Systems. Chempluschem 2020; 84:1145-1148. [PMID: 31943965 DOI: 10.1002/cplu.201900330] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 07/17/2019] [Indexed: 11/12/2022]
Abstract
The performance of molecular solar thermal energy storage systems (MOST) depends amongst others on the amount of energy stored. Azobenzenes have been investigated as high-potential materials for MOST applications. In the present study it could be shown that intermolecular attractive London dispersion interactions stabilize the (E)-isomer in bisazobenzene that is linked by different alkyl bridges. Differential scanning calorimetry (DSC) measurements revealed, that this interaction leads to an increased storage energy per azo-unit of more than 3 kcal/mol compared to the parent azobenzene. The origin of this effect has been supported by computation as well as X-ray analysis. In the solid state structure attractive London dispersion interactions between the C-H of the alkyl bridge and the π-system of the azobenzene could be clearly assigned. This concept will be highly useful in designing more effective MOST systems in the future.
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Affiliation(s)
- Anne Kunz
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Giessen.,Germany and Center for Materials Research (LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
| | - Andreas H Heindl
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Giessen.,Germany and Center for Materials Research (LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
| | - Ambra Dreos
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden
| | - Zhihang Wang
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden
| | - Kasper Moth-Poulsen
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden
| | - Jonathan Becker
- Institute of Inorganic and Analytical Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Hermann A Wegner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Giessen.,Germany and Center for Materials Research (LaMa), Justus Liebig University, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
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9
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Wu S, Butt HJ. Solar-Thermal Energy Conversion and Storage Using Photoresponsive Azobenzene-Containing Polymers. Macromol Rapid Commun 2019; 41:e1900413. [PMID: 31737964 DOI: 10.1002/marc.201900413] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/28/2019] [Indexed: 12/31/2022]
Abstract
Photoswitchable compounds are promising materials for solar-thermal energy conversion and storage. In particular, photoresponsive azobenzene-containing compounds are proposed as materials for solar-thermal fuels. In this feature article, solar-thermal fuels based on azobenzene-containing polymers (azopolymers) are reviewed. The mechanism of azopolymer-based solar-thermal fuels is introduced, and computer simulations and experimental results on azopolymer-based solar-thermal fuels are highlighted. Different types of azopolymers such as linear azopolymers, 2D azopolymers, and conjugated azopolymers are addressed. The advantages and limitations of these azopolymers for solar-thermal energy conversion and storage, along with the remaining challenges of azopolymer-based solar-thermal fuels, are discussed.
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Affiliation(s)
- 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, Jinzhai Road 96, Hefei, 230026, Anhui, China.,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
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10
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Petersen AU, Hofmann AI, Fillols M, Mansø M, Jevric M, Wang Z, Sumby CJ, Müller C, Moth‐Poulsen K. Solar Energy Storage by Molecular Norbornadiene-Quadricyclane Photoswitches: Polymer Film Devices. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900367. [PMID: 31380172 PMCID: PMC6662068 DOI: 10.1002/advs.201900367] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 04/03/2019] [Indexed: 06/10/2023]
Abstract
Devices that can capture and convert sunlight into stored chemical energy are attractive candidates for future energy technologies. A general challenge is to combine efficient solar energy capture with high energy densities and energy storage time into a processable composite for device application. Here, norbornadiene (NBD)-quadricyclane (QC) molecular photoswitches are embedded into polymer matrices, with possible applications in energy storing coatings. The NBD-QC photoswitches that are capable of absorbing sunlight with estimated solar energy storage efficiencies of up to 3.8% combined with attractive energy storage densities of up to 0.48 MJ kg-1. The combination of donor and acceptor units leads to an improved solar spectrum match with an onset of absorption of up to 529 nm and a lifetime (t 1/2) of up to 10 months. The NBD-QC systems with properties matched to a daily energy storage cycle are further investigated in the solid state by embedding the molecules into a series of polymer matrices revealing that polystyrene is the preferred choice of matrix. These polymer devices, which can absorb sunlight and over a daily cycle release the energy as heat, are investigated for their cyclability, showing multicycle reusability with limited degradation that might allow them to be applied as window laminates.
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Affiliation(s)
- Anne Ugleholdt Petersen
- Department of Chemistry and Chemical EngineeringChalmers University of TechnologySE‐412 96GothenburgSweden
| | - Anna I. Hofmann
- Department of Chemistry and Chemical EngineeringChalmers University of TechnologySE‐412 96GothenburgSweden
| | - Méritxell Fillols
- Department of Chemistry and Chemical EngineeringChalmers University of TechnologySE‐412 96GothenburgSweden
| | - Mads Mansø
- Department of ChemistryUniversity of CopenhagenUniversitetsparken 52100Copenhagen ØDenmark
| | - Martyn Jevric
- Department of Chemistry and Chemical EngineeringChalmers University of TechnologySE‐412 96GothenburgSweden
| | - Zhihang Wang
- Department of Chemistry and Chemical EngineeringChalmers University of TechnologySE‐412 96GothenburgSweden
| | | | - Christian Müller
- Department of Chemistry and Chemical EngineeringChalmers University of TechnologySE‐412 96GothenburgSweden
| | - Kasper Moth‐Poulsen
- Department of Chemistry and Chemical EngineeringChalmers University of TechnologySE‐412 96GothenburgSweden
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11
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Fu L, Yang J, Dong L, Yu H, Yan Q, Zhao F, Zhai F, Xu Y, Dang Y, Hu W, Feng Y, Feng W. Solar Thermal Storage and Room-Temperature Fast Release Using a Uniform Flexible Azobenzene-Grafted Polynorborene Film Enhanced by Stretching. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00384] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Wei Feng
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, P. R. China
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12
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Affiliation(s)
- Cai‐Li Sun
- Department of ChemistryUniversity of Liverpool Liverpool L69 7ZD United Kingdom
| | - Chenxu Wang
- Department of ChemistryUniversity of Liverpool Liverpool L69 7ZD United Kingdom
| | - Roman Boulatov
- Department of ChemistryUniversity of Liverpool Liverpool L69 7ZD United Kingdom
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13
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Wang F, Gao S, Pan J, Li X, Liu J. Short-Chain Modified SiO 2 with High Absorption of Organic PCM for Thermal Protection. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E657. [PMID: 31027214 PMCID: PMC6523198 DOI: 10.3390/nano9040657] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 04/18/2019] [Accepted: 04/19/2019] [Indexed: 11/17/2022]
Abstract
Organic phase change materials (PCMs) have great potential in thermal protection applications but they suffer from high volumetric change and easy leakage, which require "leak-proof" packaging materials with low thermal conductivity. Herein, we successfully modify SiO2 through a simple 2-step method consisting of n-hexane activation followed by short-chain alkane silanization. The modified SiO2 (M-SiO2) exhibits superior hydrophobic property while maintaining the intrinsic high porosity of SiO2. The surface modification significantly improves the absorption rate of RT60 in SiO2 by 38%. The M-SiO2/RT60 composite shows high latent heat of 180 J·g-1, low thermal conductivity of 0.178 W·m-1·K-1, and great heat capacity behavior in a high-power thermal circuit with low penetrated heating flow. Our results provide a simple approach for preparing hydrophobic SiO2 with high absorption of organic PCM for thermal protection applications.
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Affiliation(s)
- Fuxian Wang
- Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis, Guangzhou 510070, China.
| | - Shiyuan Gao
- The Engineering Research Center of None-Food Biomass Efficient Pyrolysis and Utilization Technology of Guangdong Higher Education Institutes, Dongguan University of Technology, Dongguan 523808, China.
- Guangdong Provincial Key Laboratory of Distributed Energy Systems, School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China.
| | - Jiachuan Pan
- Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis, Guangzhou 510070, China.
| | - Xiaomei Li
- The Engineering Research Center of None-Food Biomass Efficient Pyrolysis and Utilization Technology of Guangdong Higher Education Institutes, Dongguan University of Technology, Dongguan 523808, China.
- Guangdong Provincial Key Laboratory of Distributed Energy Systems, School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China.
| | - Jian Liu
- Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis, Guangzhou 510070, China.
- The Engineering Research Center of None-Food Biomass Efficient Pyrolysis and Utilization Technology of Guangdong Higher Education Institutes, Dongguan University of Technology, Dongguan 523808, China.
- Guangdong Provincial Key Laboratory of Distributed Energy Systems, School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China.
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14
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Dong L, Feng Y, Wang L, Feng W. Azobenzene-based solar thermal fuels: design, properties, and applications. Chem Soc Rev 2018; 47:7339-7368. [PMID: 30168543 DOI: 10.1039/c8cs00470f] [Citation(s) in RCA: 182] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Development of renewable energy technologies has been a significant area of research amongst scientists with the aim of attaining a sustainable world society. Solar thermal fuels that can capture, convert, store, and release solar energy in the form of heat through reversible photoisomerization of molecular photoswitches such as azobenzene derivatives are currently in the limelight of research. Herein, we provide a state-of-the-art account on the recent advancements in solar thermal fuels based on azobenzene photoswitches. We begin with an overview on the importance of azobenzene-based solar thermal fuels and their fundamentals. Then, we highlight the recent advances in diverse azobenzene materials for solar thermal fuels such as pure azobenzene derivatives, nanocarbon-templated azobenzene, and polymer-templated azobenzene. The basic design concepts of these advanced solar energy storage materials are discussed, and their promising applications are highlighted. We then introduce the recent endeavors in the molecular design of azobenzene derivatives toward efficient solar thermal fuels, and conclude with new perspectives on the future scope, opportunities and challenges. It is expected that continuous pioneering research involving scientists and engineers from diverse technological backgrounds could trigger the rapid advancement of this important interdisciplinary field, which embraces chemistry, physics, engineering, nanoscience, nanotechnology, materials science, polymer science, etc.
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Affiliation(s)
- Liqi Dong
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China.
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15
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Petersen AU, Jevric M, Moth-Poulsen K. Triazole-Functionalized Norbornadiene-Quadricyclane Photoswitches for Solar Energy Storage. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800558] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anne U. Petersen
- Department of Chemistry and Chemical Engineering; Chalmers University of Technology; Kemigården 4 41296 Gothenburg Sweden
| | - Martyn Jevric
- Department of Chemistry and Chemical Engineering; Chalmers University of Technology; Kemigården 4 41296 Gothenburg Sweden
| | - Kasper Moth-Poulsen
- Department of Chemistry and Chemical Engineering; Chalmers University of Technology; Kemigården 4 41296 Gothenburg Sweden
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16
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Chen S, Zhang Y, Chen K, Yin Y, Wang C. Insight into a Fast-Phototuning Azobenzene Switch for Sustainably Tailoring the Foam Stability. ACS APPLIED MATERIALS & INTERFACES 2017; 9:13778-13784. [PMID: 28350435 DOI: 10.1021/acsami.7b02024] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A photoresponsive surfactant of 4-octoxy-4'-[(trimethylamino)ethoxy]azobenzene (OTAEAzo) has been synthesized for developing a fast-phototuning foam switch based on its high sensitivity, reversibility, and fatigue resistance of the photoisomerization capability. Ultraviolet (UV)-light irradiation for 1 s enabled conversion from the trans isomer to the cis configuration, while exposure to visible (Vis)-light for 3 min induced a cis-to-trans transformation, which maintains an excellent cycling stability for 20 cycles of photoisomerization. The photoisomerization speed depended on the concentration of OTAEAzo, and a lower concentration facilitated a faster photoisomerization process. Because of the low critical micelle concentration (CMC), OTAEAzo with a small dosage of 0.2 g·L-1 showed foamability, which accelerated the photoisomerization speed, enabling it to become a highly efficient switch. The surface activities of trans-OTAEAzo presented distinct differences from those of cis-OTAEAzo, resulting in the foam stabilization effects of trans-OTAEAzo (t1/2 = 2.58 min) and the destabilization effects of cis-OTAEAzo (t1/2 = 0.38 min). Moreover, the foam properties varied slightly in the phototuning cycles. OTAEAzo with low CMC presents high sensitivity and reversible photoisomerization capability, providing an environmental and sustainable approach for tailoring the foam stability.
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Affiliation(s)
- Shaoyu Chen
- Key Laboratory of Eco-Textile, Ministry of Education, College of Textile & Clothing, Jiangnan University , 1800 Lihu Road, Wuxi 214122, People's Republic of China
| | - Yanyan Zhang
- Key Laboratory of Eco-Textile, Ministry of Education, College of Textile & Clothing, Jiangnan University , 1800 Lihu Road, Wuxi 214122, People's Republic of China
| | - Kunlin Chen
- Key Laboratory of Eco-Textile, Ministry of Education, College of Textile & Clothing, Jiangnan University , 1800 Lihu Road, Wuxi 214122, People's Republic of China
| | - Yunjie Yin
- Key Laboratory of Eco-Textile, Ministry of Education, College of Textile & Clothing, Jiangnan University , 1800 Lihu Road, Wuxi 214122, People's Republic of China
| | - Chaoxia Wang
- Key Laboratory of Eco-Textile, Ministry of Education, College of Textile & Clothing, Jiangnan University , 1800 Lihu Road, Wuxi 214122, People's Republic of China
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Cho EN, Zhitomirsky D, Han GGD, Liu Y, Grossman JC. Molecularly Engineered Azobenzene Derivatives for High Energy Density Solid-State Solar Thermal Fuels. ACS APPLIED MATERIALS & INTERFACES 2017; 9:8679-8687. [PMID: 28234453 DOI: 10.1021/acsami.6b15018] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Solar thermal fuels (STFs) harvest and store solar energy in a closed cycle system through conformational change of molecules and can release the energy in the form of heat on demand. With the aim of developing tunable and optimized STFs for solid-state applications, we designed three azobenzene derivatives functionalized with bulky aromatic groups (phenyl, biphenyl, and tert-butyl phenyl groups). In contrast to pristine azobenzene, which crystallizes and makes nonuniform films, the bulky azobenzene derivatives formed uniform amorphous films that can be charged and discharged with light and heat for many cycles. Thermal stability of the films, a critical metric for thermally triggerable STFs, was greatly increased by the bulky functionalization (up to 180 °C), and we were able to achieve record high energy density of 135 J/g for solid-state STFs, over a 30% improvement compared to previous solid-state reports. Furthermore, the chargeability in the solid state was improved, up to 80% charged from 40% charged in previous solid-state reports. Our results point toward molecular engineering as an effective method to increase energy storage in STFs, improve chargeability, and improve the thermal stability of the thin film.
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Affiliation(s)
- Eugene N Cho
- Department of Materials Science and Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - David Zhitomirsky
- Department of Materials Science and Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Grace G D Han
- Department of Materials Science and Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Yun Liu
- Department of Materials Science and Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Jeffrey C Grossman
- Department of Materials Science and Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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