Traffic Lights for Catalysis: Stimuli‐Responsive Molecular and Extended Catalytic Systems

Thaggard, Grace C.; Haimerl, Johanna; Fischer, Roland A.; Park, Kyoung Chul; Shustova, Natalia B.

doi:10.1002/anie.202302859

Cited by 36 publications

(19 citation statements)

References 156 publications

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“…Photoswitchable MOFs⊃guests have been extensively applied in gas storage and separation, 6,61,98-100 sustainable water desalination, 87,101,102 proton conductivity, 103 magnetic materials, 104 and photoelectronic devices 105,106 in recent years. 107 However, research about photoswitchable host-guest MOFs in the field of optics and photonics is still in its infancy, so we only discuss several photoswitchable host-guest MOFs for optical anticounterfeiting and other applications to help readers understand the mechanism of this stimuli-responsive behavior.…”

Section: Light-responsive Mpus As Guestmentioning

confidence: 99%

Dynamically responsive photonic metal–organic frameworks

Zheng,

Zhang,

Cui

et al. 2023

Adv. Photon.

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Different from single and static photonic materials, dynamically responsive materials possess numerous advantages, such as being multifunctional, dynamically responsive, and able to provide multiple channels within spatially limited platforms, thus exhibiting great potential for application in the color-on-demand areas, including imaging, optical displays, anticounterfeiting, and encoding. Photonic functional metal-organic frameworks (MOFs), with highly designable framework structures and varieties of optical functional building units, possess broad research and application prospects in the field of photonics, which make it possible to design a promising platform with multifunctional and integrated photonic performance. In this review, beyond the preparation strategies of stimuli-responsive photonic MOFs, we also summarize the stimuli-responsive photonic MOFs regarding several most representative types of external stimuli (such as light, gas, pressure, and polarization). As shown, external stimulation endows the stimuli-responsive photonic MOFs with intriguing regulatable photonic properties: intensive and tunable emission, multiphoton-excitable luminescence, nonlinear optical, circularly polarized luminescence, lasing, etc. Furthermore, their advanced representative applications, such as information encryption and anticounterfeiting display, biological imaging, chemosensing, and others, are also reviewed. The challenges are proposed and the prospects are addressed.

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Section: Light-responsive Mpus As Guestmentioning

confidence: 99%

Dynamically responsive photonic metal–organic frameworks

Zheng,

Zhang,

Cui

et al. 2023

Adv. Photon.

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“…[7] Also, Thaggard et al lately discussed the interest of photoswitchable catalysts, underlining the interest of photoswitches as tools to control the activity of the catalytic system. [58] To our knowledge, only a few examples of photoswitchable macrocycles are dedicated to control the reactivity of a given system. To begin with, one could think of the way the geometry of the photoswitch would influence the formation of the macrocycle.…”

Section: Control Of the Reactivitymentioning

confidence: 99%

The Growing Field of Photoswitchable Macrocycles: A Promising Way to Tune Various Properties with Light

Ludwig

Xie

2023

ChemPhotoChem

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Thanks to supramolecular interactions of macrocyclic compounds with their guest ions or molecules, macrocycles have found wide applications in molecular and chiral recognition, separation, transportation, molecular machines, and so on. Photoswitchable macrocycles are especially appealing and attracting more and more interest because the embedded molecular photoswitch enables dynamic control of molecular shape, conformation, and different properties by light, a non‐invasive, remote and highly tunable stimulus. With available photochromic compounds, various photoswitchable macrocycles have been developed. In this review paper, we describe the recently reported photoswitchable macrocyclic compounds, with a focus on the control of the macrocyclic structure, dynamic, photo or thermal isomerization, as well as their applications on encapsulation and release of ionic or aromatic species, on the reversible modulation of chemical, biological, electronic, fluorescent and chiroptical properties by light.

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“…Research on MOFs has grown explosively since their inception in the 1990s. Their notable features of exceptional molecular accessibility and tunable functionality have rendered them excellent candidates for various applications, including gas sorption and separation, sensing, drug delivery, and catalysis. − The molecular accessibility is facilitated by their structural diversity and reticular chemistry available in both two-dimensional (2D) and three-dimensional (3D) porous platforms with expansive surface areas (extending up to 8000 m 2 /g) . Concurrently, ample selections of functional building blocks make them highly versatile.…”

Section: Introductionmentioning

confidence: 99%

Maximizing the Potential of Electrically Conductive MOFs

Pham,

Choi,

Stodolka

et al. 2024

Acc. Chem. Res.

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Metrics & MoreArticle Recommendations CONSPECTUS: Electrically conductive metal−organic frameworks (EC-MOFs) have emerged as a compelling class of materials, drawing increasing attention due to their unique properties facilitating charge transport within porous structures.The synergy between electrical conductivity and porosity has opened a wide range of applications, including electrocatalysis, energy storage, chemiresistive sensing, and electronic devices that have been underexplored for their insulating counterparts. Despite these promising prospects, a prevalent challenge arises from the predominant adoption of two-dimensional (2D) structures by most EC-MOFs. These 2D frameworks often show modest surface areas and short interlayer distances, hindering molecular accessibility, which deviates from the inherent characteristics of conventional MOFs. Furthermore, the quest for efficient charge transport imposes design constraints, leading to a restricted selection of functional building blocks. Additionally, there is a lack of established functionalization methods within EC-MOFs, limiting their functional diversity. Thus, these challenges have impeded EC-MOFs from reaching their full potential.In this Account, we summarize and discuss our group's efforts aimed at enhancing molecular accessibility and deploying the functional diversity of EC-MOFs. Our focus on enhancing molecular accessibility involves several strategies. First, we employed macrocyclic ligands with intrinsic pockets as the building blocks for EC-MOFs. The integrated intrinsic pockets in the frameworks supplement surface areas and additional pores to enhance molecular accessibility. The resulting macrocyclic ligand-based EC-MOFs exhibit exceptionally high surface areas and confer advantages in electrochemical performances. Second, our efforts extend to addressing the structural limitations, frequently associated with EC-MOFs' 2D structures. Through the pillar insertion strategy, we transformed a 2D EC-MOF platform into a three-dimensional (3D) structure, thereby achieving higher porosity and enhanced molecular accessibility. In pursuing functional diversity, we have delved into molecular-level tuning of EC-MOF building blocks. We demonstrated that electron-rich alkyne-based pockets in the macrocyclic ligands can host transition metals and alkali ions, enabling ion selectivity and showcasing diverse use of EC-MOFs. We utilized a postsynthetic approach to further functionalize metal nodes on the molecular level within an EC-MOF framework, introducing a proton-conducting pathway while preserving its electrical conductivity.We aspire for this Account to provide practical insights and strategies to surmount structural and functional diversity limitations in the realm of EC-MOFs. By integrating enhanced molecular accessibility and diverse functionality, our endeavor to propel the utility of these materials will inspire further rational development for future EC-MOFs and unlock their full potential.

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Traffic Lights for Catalysis: Stimuli‐Responsive Molecular and Extended Catalytic Systems

Cited by 36 publications

References 156 publications

Dynamically responsive photonic metal–organic frameworks

Dynamically responsive photonic metal–organic frameworks

The Growing Field of Photoswitchable Macrocycles: A Promising Way to Tune Various Properties with Light

Maximizing the Potential of Electrically Conductive MOFs

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