Photoresponsive porous materials

Danowski, Wojciech; Leeuwen, Thomas Van; Browne, Wesley R.; Feringa, Ben L.

doi:10.1039/d0na00647e

Cited by 80 publications

(75 citation statements)

References 156 publications

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“…[9] Stimuli-responsive MOFs can undergo changes in their inherent physical and/or chemical properties upon exposure to an external stimulus such as temperature, [10] pH, [11] electricity, [12] magnetic field, [13] and light. [14] Such behaviors have rendered stimuli-responsive MOFs a class of smart materials with significant technological applicability. Among these stimuli, light is especially attractive due to the ease to accurately control the intensity of the response and to distinguish the time and location through manipulating the wavelength, intensity and duration of the irradiation.…”

Section: Introductionmentioning

confidence: 99%

Photoresponsive Metal‐Organic Frameworks: Tailorable Platforms of Photoswitches for Advanced Functions

Zhang¹,

Au³

2022

ChemNanoMat

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Stimuli-responsive metal-organic frameworks (MOFs) have attracted great interest in a diverse range of applications due to their abilities to change attributes under external stimuli. As a ubiquitous stimulus, light can be remotely controlled and quickly switched. Hence, the exploration of photoresponsive materials has attracted widespread interest. In particular, photoresponsive MOFs are usually formed by inserting photoswitchable linkers of different properties within the MOF backbone. Under the action of light, some physical and/or chemical changes will occur, resulting in a series of structural and morphological changes, in turn producing specific functions in different MOF materials. In this review, we will highlight some representative examples to demonstrate the recent advances in the development of photoresponsive MOF-based materials. The main types of molecular photoswitches, their properties and the main applications of photoresponsive MOFs will also be covered, followed by a discussion on the future development of the field.

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Section: Introductionmentioning

confidence: 99%

Photoresponsive Metal‐Organic Frameworks: Tailorable Platforms of Photoswitches for Advanced Functions

Zhang¹,

Au³

2022

ChemNanoMat

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“…Additionally, DTEs show high fatigue resistance 2,6 , thermal irreversibility 2,6 , and large quantum yield (QY) of photoisomerization 2 . These features make them excellent candidates for developing modern technologies, for example, application of molecular photoswitches 1,2 and photomolecular motors 2,7 in nanomachines 8 and molecular electronic devices 7,[9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

“…Several authors have studied numerous DTE derivatives from both experimental and theoretical perspectives [1][2][3][4][5][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] for more than three decades. Although many aspects of DTEs have been clarified, the control of the QY of the photocyclization and photoreversion is still a puzzle.…”

Section: Introductionmentioning

confidence: 99%

The role of asymmetry on the photoisomerization of dithienylethene molecule photoswitch

Salazar

Reinink

Faraji

2022

Preprint

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Dithienylethene (DTE) molecular photoswitches have shown to be excellent candidates in the design of efficient optoelectronic devices, due to their high photoisomerization quantum yield (QY), for which symmetry is suggested to play a crucial role. Here, we present a theoretical study on the photochemistry of a non-symmetric dithienylethene photoswitch, with a special emphasis on the effect of asymmetric substitution on the photocyclization and photoreversion mechanisms. We used the Spin-Flip Time Dependent Density Functional Theory (SF-TDDFT) method to locate and characterize the main structures (conical intersections and minima) of the ground state and the first two excited states, S1 and S2, along the ring opening/closure reaction coordinate of the photocyclization and photoreversion processes, and to identify the important coordinates governing the radiationless decay pathways. Our results suggest that while the main features that characterize the photoisomerization of symmetric DTEs are also present for the photoisomerization of the non-symmetric DTE, the lower energy barrier on S1 along the cycloreversion reaction speaks in favor of a more efficient and therefore a higher cycloreversion QY for the non-symmetric DTEs, making them a better candidate for molecular optoelectronic devices than their symmetric counterparts.

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“…Stimuli‐responsive materials, [1–3] which can reversibly change their structures and properties in response to external stimuli such as light, [4–6] pH, [7, 8] chemicals, [9, 10] and heat, [11] have attracted tremendous attention due to their potential applications in drug delivery, [12, 13] smart windows, [14] molecular machines, [15] etc. Compared to the other external stimuli, light irradiation is of particular interest owing to its simple, handy and non‐invasive stimulus and has been frequently used in a variety of multi‐functional systems [16–20] …”

Section: Introductionmentioning

confidence: 99%

Guest‐Driven Light‐Induced Spin Change in an Azobenzene Loaded Metal–Organic Framework

et al. 2021

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Stimuli‐responsive materials that can be reversibly switched by light are of immense interest. Among them, photo‐responsive spin crossover (SCO) complexes have great promises to combine the photoactive inputs with multifaceted outputs into switchable materials and devices. However, the reversible control the spin‐state change by photochromic guests is still challenging. Herein, we report an unprecedented guest‐driven light‐induced spin change (GD‐LISC) in a Hofmann‐type metal–organic framework (MOF), [Fe(bpn){Ag(CN)2}2]⋅azobenzene. (1, bpn=1,4‐bis(4‐pyridyl)naphthalene). The reversible trans–cis photoisomerization of azobenzene guest upon UV/Vis irradiation in the solid‐state results in the remarkable magnetic changes in a wide temperature range of 10–180 K. This finding not only establishes a new switching mechanism for SCO complexes, but also paves the way toward the development of new generation of photo‐responsive magnetic materials.

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Photoresponsive porous materials

Abstract: Molecular machines, switches, and motors enable control over nanoscale molecular motion with unprecedented precision in artificial systems. Integration of these compounds into robust material scaffolds, in particular nanostructured solids, is...

Cited by 80 publications

References 156 publications

Photoresponsive Metal‐Organic Frameworks: Tailorable Platforms of Photoswitches for Advanced Functions

Photoresponsive Metal‐Organic Frameworks: Tailorable Platforms of Photoswitches for Advanced Functions

The role of asymmetry on the photoisomerization of dithienylethene molecule photoswitch

Guest‐Driven Light‐Induced Spin Change in an Azobenzene Loaded Metal–Organic Framework

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