51
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Yao ZS, Tang Z, Tao J. Bistable molecular materials with dynamic structures. Chem Commun (Camb) 2020; 56:2071-2086. [DOI: 10.1039/c9cc09238b] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this Feature Article, we introduce how to manipulate the motion of electrons or molecules by external stimuli, to achieve switchable properties in molecule-based single crystals.
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Affiliation(s)
- Zi-Shuo Yao
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Liangxiang Campus
- Beijing Institute of Technology
- Beijing 102488
| | - Zheng Tang
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Liangxiang Campus
- Beijing Institute of Technology
- Beijing 102488
| | - Jun Tao
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Liangxiang Campus
- Beijing Institute of Technology
- Beijing 102488
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52
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Xu Y, Hu ZB, Wu LN, Li MX, Wang ZX, Song Y. Ferrimagnetic Fe(IV)-Mn(II) staircase chain constructed from Fe(IV) building block. Polyhedron 2020. [DOI: 10.1016/j.poly.2019.114243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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53
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Chen JT, Zhao XH, Zhang YZ. Manipulating the spin crossover behavior in a series of {FeIII2FeII} complexes. Dalton Trans 2020; 49:5949-5956. [DOI: 10.1039/d0dt00016g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three cyanide-bridged {Fe2Fe} complexes are reported to exhibit excellent SCO properties which are highly dependent on the compact degree of the π-π stacking, the loss of lattice solvents as well as the electron-donor strength of TpR.
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Affiliation(s)
- Jia-Tao Chen
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- P. R. China
| | - Xin-Hua Zhao
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- P. R. China
| | - Yuan-Zhu Zhang
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- P. R. China
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54
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Berdiell IC, Hochdörffer T, Desplanches C, Kulmaczewski R, Shahid N, Wolny JA, Warriner SL, Cespedes O, Schünemann V, Chastanet G, Halcrow MA. Supramolecular Iron Metallocubanes Exhibiting Site-Selective Thermal and Light-Induced Spin-Crossover. J Am Chem Soc 2019; 141:18759-18770. [DOI: 10.1021/jacs.9b08862] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Izar Capel Berdiell
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Tim Hochdörffer
- Department of Physics, Technical University of Kaiserslautern, Erwin Schrödinger Straße 46, D-67663 Kaiserslautern, Germany
| | | | - Rafal Kulmaczewski
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Namrah Shahid
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Juliusz A. Wolny
- Department of Physics, Technical University of Kaiserslautern, Erwin Schrödinger Straße 46, D-67663 Kaiserslautern, Germany
| | - Stuart L. Warriner
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Oscar Cespedes
- School of Physics and Astronomy, EC Stoner Building, University of Leeds, Leeds LS2 9JT, U.K
| | - Volker Schünemann
- Department of Physics, Technical University of Kaiserslautern, Erwin Schrödinger Straße 46, D-67663 Kaiserslautern, Germany
| | | | - Malcolm A. Halcrow
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
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55
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Shi T, Xu Y, Zou YJ, Wang ZX. Synthesis, structure and magnetic properties of copper(ii) azide. Dalton Trans 2019; 48:11186-11190. [PMID: 31273361 DOI: 10.1039/c9dt01450k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel azide-bridged copper compound without an auxiliary ligand has been synthesized and characterized by single-crystal diffraction analysis. The compound consists of 1D double chains with end-on (EO) azide bridges. Furthermore, the neighboring chains are connected by weak coordination bonds, which leads to the formation of a 3D architecture. Low-temperature magnetic measurements reveal that antiferromagnetic interactions are dominant, with concomitant spin-canted antiferromagnetism.
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Affiliation(s)
- Taqing Shi
- School of Pharmacy, Guangdong Medical University, Dongguan 523800, People's Republic of China
| | - Ye Xu
- Department of Chemistry, Centre for Supramolecular Chemistry and Catalysis, Innovative Drug Research Centre, Shanghai University, Shanghai 200444, People's Republic of China.
| | - Ya-Jing Zou
- Department of Chemistry, Centre for Supramolecular Chemistry and Catalysis, Innovative Drug Research Centre, Shanghai University, Shanghai 200444, People's Republic of China.
| | - Zhao-Xi Wang
- Department of Chemistry, Centre for Supramolecular Chemistry and Catalysis, Innovative Drug Research Centre, Shanghai University, Shanghai 200444, People's Republic of China.
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56
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Abstract
The spin transition of metal ions involves interconversion between electron configurations exhibiting considerably different functions and plays a substantial role in the chemical, physical, and biological fields. The photoinduced spin transition offers a promising approach to tune various physical properties with high spatial and temporal resolutions for producing smart multifunctional materials not only to explore their basic science but also to satisfy the demands of the next-generation photoswitchable-molecule-based devices. Therefore, it is attracting considerable interest to utilize photoinduced spin transition to simultaneously tune multifunctions. However, two issues are challenging in obtaining reversible and swift manipulation of functions: (1) the interconversion between different electron configurations of photoresponsive units should be reversibly switched via photoinduced spin transition; (2) effective coupling should be built between the photoresponsive and functional units to produce photoswitchable functions utilizing photoinduced spin transition. In this Account, we will review our recent advances in the usage of spin transition of metal ions as actuators for tuning the magnetic, dielectric, fluorescence, and mechanical properties, wherein the role of a photoswitchable spin transition is highlighted. We mainly focus on the study of two spin-transition categories, including spin-crossover (SCO) of one metal ion and metal-to-metal charge transfer (MMCT). Initially, we will describe a strategy for developing photoinduced reversible SCO and MMCT. The role of flexible intermolecular interactions, in particular, π···π interactions, is discussed with respect to a photoinduced reversible MMCT. Then, the SCO and MMCT units were assembled using metallocyanate building blocks to form a chain, wherein the spin states, anisotropy, and magnetic coupling interactions can be photoswitched to tune the single-chain magnet behavior. Besides magnetic properties, the photoinduced spin transition that is associated with the concomitant changing of charge distribution, bond lengths, and absorption spectra can be utilized to tune the multifunctions. Therefore, the transfer of an electron from a central cobalt site to one of the two iron sites in linear trinuclear Fe2Co compounds resulted in the transformation of a centrosymmetric nonpolar molecule into an asymmetric polar molecule, and the molecular electric dipole and dielectric properties can be reversibly switched. Moreover, the spin transition usually involved significant expansion or contraction of the coordination sphere of metal ions because of the population/depopulation of the antibonding eg orbitals. Therefore, colossal positive and negative thermal expansion behaviors were achieved in a layered compound by manipulating the spin-transition process and the rotation of the functional units, thereby providing a strategy for synthesizing phototunable nanomotors. Photoinduced spin transition can also be used to modulate the fluorescence properties by controlling the energy transfer between the fluorescent ligands and the metal sites showing SCO. Finally, we will provide a perspective and detail the remaining challenges that are associated with this research area. We believe that an increasing number of fascinating photoswitchable SCO and MMCT systems will emerge in the near future and that the materials exhibiting various properties and functions that can be manipulated using photoinduced spin transition will provide novel opportunities for the development of smart multifunctional materials and devices.
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Affiliation(s)
- Yin-Shan Meng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P. R. China
| | - Tao Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P. R. China
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57
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Sun HY, Meng YS, Liu T. Photo-switched magnetic coupling in spin-crossover complexes. Chem Commun (Camb) 2019; 55:8359-8373. [DOI: 10.1039/c9cc03952j] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This feature article summarizes the recent progress in the magnetically coupled spin-crossover (SCO) complexes. The photo-switched molecular nanomagnet property, long range magnetic ordering, and the perspectives of SCO complexes are also presented.
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Affiliation(s)
- Hui-Ying Sun
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Yin-Shan Meng
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Tao Liu
- State Key Laboratory of Fine Chemicals
- Dalian University of Technology
- Dalian 116024
- P. R. China
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58
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Wang JH, Vignesh KR, Zhao J, Li ZY, Dunbar KR. Charge transfer and slow magnetic relaxation in a series of cyano-bridged FeIII4MII2 (M = FeII, CoII, NiII) molecules. Inorg Chem Front 2019. [DOI: 10.1039/c8qi01245h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, single-crystal structures and magnetic properties of three new cyano-bridged complexes [FeIII4MII2] (M = FeII, CoII, NiII) are reported.
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Affiliation(s)
- Jin-Hua Wang
- School of Materials Science and Engineering
- Nankai University
- Tianjin 300350
- China
| | | | - Jia Zhao
- School of Materials Science and Engineering
- Nankai University
- Tianjin 300350
- China
| | - Zhao-Yang Li
- School of Materials Science and Engineering
- Nankai University
- Tianjin 300350
- China
| | - Kim R. Dunbar
- Department of Chemistry
- Texas A&M University
- College Station
- USA
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59
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Chen XR, Liu SX, Ren Q, Tian ZF, Huang XC, Wang L, Ren XM. Wide Magnetic Thermal Memory Effect (∼55 K) Above Room Temperature Coupled to a Structure Phase Transition of Lattice Symmetry Reduction in High-Temperature Phase in an S = 1/2 Spin Chain Molecule Crystal. J Phys Chem B 2018; 122:12428-12435. [PMID: 30514086 DOI: 10.1021/acs.jpcb.8b10492] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
One-dimensional (1D) S = 1/2 Heisenberg antiferromagnetic (AFM) chain system shows frequently a spin-Peierls-type transition owing to strong spin-lattice coupling. From high-temperature phase (HTP) to low-temperature phase (LTP), the spin chain distortion leads to the reduction in lattice symmetry in LTP, called the symmetry breaking (SB) phase transition. Herein, we report the first example of 1D S = 1/2 AFM molecular crystal, [Et3( n-Pr)N][Ni(dmit)2] (Et3( n-Pr)N+ = triethylpropylammonium, dmit2- = 2-thioxo-1,3-dithiole-4,5-dithiolate), which shows a structural phase transition with lattice symmetry increase in LTP, which is contrary to the SB phase transition. Particularly, the structure phase transition leads to magnetically bistable state with TC↑ ≈ 375 K, TC↓ ≈ 320 K, and surprisingly large thermal hysteresis (∼55 K). Additionally, LTP and HTP coexist in a temperature region near TC but not at TC in this 1D spin system. The large hysteresis is related to the huge deformation of anion stack, which needs high activation energy for the structure transformation and magnetic transition between LTP and HTP. This study would not only provide new insight into the relationship of spin-Peierls-type transition and structure phase transition but also offer a roadmap for searching molecular-scale magnetic bistable materials, which are in huge demand in future electronic, magnetic, and photonic technologies.
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Affiliation(s)
- Xuan-Rong Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry & Molecular Engineering , Nanjing Tech University , Nanjing 210009 , P. R. China.,School of Chemistry & Environmental Engineering and Instrumental Analysis Center , Yancheng Teachers University , Yancheng 224051 , P. R. China
| | - Shao-Xian Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry & Molecular Engineering , Nanjing Tech University , Nanjing 210009 , P. R. China
| | - Qiu Ren
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry & Molecular Engineering , Nanjing Tech University , Nanjing 210009 , P. R. China
| | - Zheng-Fang Tian
- Hubei Key Laboratory for Processing and Application of Catalytic Materials , Huanggang Normal University , Huanggang 438000 , P. R. China
| | | | - Lifeng Wang
- School of Chemistry & Environmental Engineering and Instrumental Analysis Center , Yancheng Teachers University , Yancheng 224051 , P. R. China.,Institute for Frontier Materials (IFM) , Deakin University , 75 Pigdons Road, Waurn Ponds , Victoria 3216 , Australia
| | - Xiao-Ming Ren
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry & Molecular Engineering , Nanjing Tech University , Nanjing 210009 , P. R. China
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60
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Li D, Zhao XM, Zhao HX, Long LS, Zheng LS. Coexistence of Magnetic-Optic-Electric Triple Switching and Thermal Energy Storage in a Multifunctional Plastic Crystal of Trimethylchloromethyl Ammonium Tetrachloroferrate(III). Inorg Chem 2018; 58:655-662. [PMID: 30576116 DOI: 10.1021/acs.inorgchem.8b02835] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Driven by the rapidly increasing demand for technological applications, multifunctional materials have been one important research area, which are expected to enhance the capacity and versatility of materials in various applications. Nevertheless, combining more than three functions in one molecular compound is still a challenge. Molecular solid-solid phase transition materials could exhibit switchable properties, which could have potential applications such as switches, sensors, and memory devices. However, these switchable molecular materials are rarely researched as thermal energy storage materials. In this work, we report the coexistence of thermal energy storage and magnetic-optic-electric triple switching in a plastic crystal, trimethylchloromethyl ammonium tetrachloroferrate(III), ([(CH3)3NCH2Cl][FeCl4], referred to as 1). 1 undergoes plastic phase transition at near room temperature (326 K) induced by the order-disorder of the ions. The magnetic-optic-electric triple switching in 1 could be triggered by temperature stimuli near room temperature. Meanwhile, with utilization of large latent heat during the phase transition process and sensible heat, the energy storage in 1 is up to 107 J g-1 from 293 to 343 K, demonstrating its thermal energy storage application in solar energy systems and industrial sectors. This work particularly exhibits the advantages of plastic molecular materials as thermal energy storage materials and introduces the thermal energy storage into the multi-switchable plastic phase transition molecular materials, which will give extra flexibility for the design of new types of multifunctional materials.
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Affiliation(s)
- Dong Li
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Xue-Mei Zhao
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Hai-Xia Zhao
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - La-Sheng Long
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Lan-Sun Zheng
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
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61
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Luo YH, Chen C, Lu GW, Hong DL, He XT, Wang C, Wang JY, Sun BW. Atomically Thin Two-Dimensional Nanosheets with Tunable Spin-Crossover Properties. J Phys Chem Lett 2018; 9:7052-7058. [PMID: 30509071 DOI: 10.1021/acs.jpclett.8b03298] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Combining the fascinating advantages of ultrathin two-dimensional (2D) nanosheets with the nanostructuration of spin-crossover (SCO) materials represents an attractive target of controlled fabrication of SCO nano-objects at the device level. Here, we demonstrate that through facile-operating ultrasonic force-assisted liquid exfoliation technology the three-dimensional (3D) van der Waals SCO bulk precursor {[Fe(1,3-bpp)2(NCS)2]2 (1, 1,3-bpp = 1,3-di(4-pyridyl)-propane)} can be exfoliated into single-layered 2D nanosheets (NS-1). As a consequence, the magnetism has been tuned from complete paramagnetic (bulk precursors) to SCO transition at around 250 K (2D nanosheets). In addition, the metal-to-ligand charge transition (MLCT), the intraligand π-π* transition and the color display also have been altered both in colloidal suspension and in the solid state. These dramatic changes of physical-chemical properties at different forms and states can be attributed to the efficient cooperativity derived from the interlayer van der Waals interactions within the curly or vertically stacked 2D building blocks.
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Affiliation(s)
- Yang-Hui Luo
- School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , People's Republic of China
| | - Chen Chen
- School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , People's Republic of China
| | - Guo-Wei Lu
- Institute of Innovative Science and Technology , Tokai University , Kanagawa 259-1292 , Japan
| | - Dan-Li Hong
- School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , People's Republic of China
| | - Xiao-Tong He
- School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , People's Republic of China
| | - Cong Wang
- School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , People's Republic of China
| | - Jia-Ying Wang
- School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , People's Republic of China
| | - Bai-Wang Sun
- School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , People's Republic of China
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