Rational Design of Smart Metal–Organic Frameworks for Light-Modulated Gas Transport

Liu, Pingying; Tian, Ziqi; Chen, Liang

doi:10.1021/acsami.2c07124

Cited by 5 publications

(3 citation statements)

References 81 publications

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“…Indeed, it is one of the rare events, where the photoswitch being part of the structural unit of MOF exhibits phototunability. Along the line, several computational studies have also been carried out on azopyridine‐decorated / arylazopyrazole‐incorporated MOFs and revealed the potential applications in harvesting and releasing gas molecules by light [99a–b] …”

Section: Supramolecular Aspectsmentioning

confidence: 99%

Light‐Switchable Metal Complexes: Introducing Photoresponsive Behaviour Through Azoheteroarenes

et al. 2023

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Azoheteroarenes are emerging classes of photoswitches with versatile scaffolds that offer distinct features such as efficient photoisomerization, tunable stability of the photoswitched states, and bidirectional photoswitching. Moreover, the heteroatoms of such photoswitches exhibit coordination ability to bind to the metal centers. The resulting azoheteroarene‐based metal complexes can be designed and developed to tune various metal‐based properties towards intriguing applications such as in optics, magnetic properties, data storage applications, and catalysis. Despite the diverse utility of azopyridines in such contexts, other azoheteroarenes, particularly the state‐of‐the‐art five‐membered heterocycle‐based photoswitches, remain under‐explored. In this Review, we describe the diverse classes of azoheteroarene‐coordinated metal complexes reported in the literature and survey their photoswitching behaviour and applications. Furthermore, we identify potential azoheteroarene candidates for building photochrome‐coupled metal complexes and supramolecular architectures for maximizing the photo‐tuning of metal‐related properties.

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Section: Supramolecular Aspectsmentioning

confidence: 99%

Light‐Switchable Metal Complexes: Introducing Photoresponsive Behaviour Through Azoheteroarenes

et al. 2023

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“…In fact, when the azobenzene switched to the cis state, the diffusion flux of the polar molecules significantly increased, but that of the non-polar molecules did not change. In another work [49], the diffusion behaviors of CO 2 and N 2 gases on a series of MOFs systems based on Mg-MOF-74-III as a platform and a chain containing arylazopyrazole, modified with methylene amine as the functional molecule have been investigated. The diffusion of CO 2 was regulated by cis-to-trans isomerization of the functional unit.…”

Section: Azobenzene-based Mofsmentioning

confidence: 99%

Recent Progress in Photoresponsive Biomaterials

et al. 2023

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Photoresponsive biomaterials have garnered increasing attention recently due to their ability to dynamically regulate biological interactions and cellular behaviors in response to light. This review provides an overview of recent advances in the design, synthesis, and applications of photoresponsive biomaterials, including photochromic molecules, photocleavable linkers, and photoreactive polymers. We highlight the various approaches used to control the photoresponsive behavior of these materials, including modulation of light intensity, wavelength, and duration. Additionally, we discuss the applications of photoresponsive biomaterials in various fields, including drug delivery, tissue engineering, biosensing, and optical storage. A selection of significant cutting-edge articles collected in recent years has been discussed based on the structural pattern and light-responsive performance, focusing mainly on the photoactivity of azobenzene, hydrazone, diarylethenes, and spiropyrans, and the design of smart materials as the most targeted and desirable application. Overall, this review highlights the potential of photoresponsive biomaterials to enable spatiotemporal control of biological processes and opens up exciting opportunities for developing advanced biomaterials with enhanced functionality.

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“…Due to the strong controllability of organic synthesis, the design of organic units in MOF structures is often fruitful. At present, the design of organic units is mainly focused on length extension, − geometric conformation changes, − modulation of ligand sites, − and functionalization. − Among them, the design concept of functionalized MOFs has been widely studied and applied because of their various advantages. First of all, the types of organic functional groups are numerous. − Next, organic functional groups can be incorporated into different parts of the MOF structure, including metal ions/clusters, organic bridging ligands, and blank spaces within the cavity. − More importantly, introducing organic functional groups into the MOFs can enrich the host–guest chemistry between MOFs and other small molecules. − In conclusion, the performance tunability of MOFs in various applications can be improved by purposefully designing organic units.…”

Section: Introductionmentioning

confidence: 99%

Ameliorating Adsorption Performance for Poisonous Methylene Blue through the Amino Functionalization of Metal–Organic Frameworks

et al. 2023

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Amino (−NH2)-functionalized metal–organic frameworks (MOFs) are widely applied to improve the properties of materials owing to the rich host–guest chemical properties of amino groups. In this work, the amino-functionalization strategy was thus employed to improve the sorption performance of methylene blue (MB). The introduction of −NH2 groups in AOBTC-Zn did not reduce the pore size of the framework but rather modulated and optimized the host–guest interactions of MOFs. The MB+ sorption result was significantly improved by the NH2-functionalized NH2-AOBTC-Zn. The results showed that the maximum sorption capacity of NH2-AOBTC-Zn is much higher (1623 mg/g) than that of AOBTC-Zn (204 mg/g), which was comparable with that of MIL-68(Al) (1666 mg/g). The adsorption kinetics and isothermal models indicated that the MB+ sorption processes of both MOFs were consistent with the Langmuir isothermal and pseudo-second-order kinetic models. The single-group and multicomponent sorption experiments showed that the sorption behavior was the result of π–π interaction, electrostatic interaction, hydrogen bonding interaction, and pore size interaction. In particular, NH2-AOBTC-Zn exhibits a higher adsorption capacity than AOBTC-Zn due to the additional hydrogen bonding interactions it provided. These may guide the design of porous MOFs with side group modification for liquid phase sorption/separation.

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Rational Design of Smart Metal–Organic Frameworks for Light-Modulated Gas Transport

Cited by 5 publications

References 81 publications

Light‐Switchable Metal Complexes: Introducing Photoresponsive Behaviour Through Azoheteroarenes

Light‐Switchable Metal Complexes: Introducing Photoresponsive Behaviour Through Azoheteroarenes

Recent Progress in Photoresponsive Biomaterials

Ameliorating Adsorption Performance for Poisonous Methylene Blue through the Amino Functionalization of Metal–Organic Frameworks

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