Bipyridinium derivative-based coordination polymers: From synthesis to materials applications

Sun, Jian‐Ke; Yang, Xiaodong; Yang, Guo‐Yu; Zhang, Jie

doi:10.1016/j.ccr.2017.10.029

Cited by 230 publications

(136 citation statements)

References 159 publications

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“…Therefore, thermo-active viologen semiconductors are prospectively constructed with near-planar/planar viologen cations. Secondly, the radical products are highly active and easily faded in an oxygen atmosphere with the presence of heat or not 29,30 . Several examples have demonstrated that, the stability of viologen radicals can be clearly improved when the radicals are loaded in a porous framework 31,32 or sandwiched by inorganic layers 33 to avoid contact with oxygen.…”

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confidence: 99%

Directed self-assembly of viologen-based 2D semiconductors with intrinsic UV–SWIR photoresponse after photo/thermo activation

et al. 2020

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Extending photoresponse ranges of semiconductors to the entire ultraviolet-visible (UV)-shortwave near-infrared (SWIR) region (ca. 200-3000 nm) is highly desirable to reduce complexity and cost of photodetectors or to promote power conversion efficiency of solar cells. The observed up limit of photoresponse for organic-based semiconductors is about 1800 nm, far from covering the UV-SWIR region. Here we develop a cyanide-bridged layer-directed intercalation approach and obtain a series of two viologen-based 2D semiconductors with multispectral photoresponse. In these compounds, infinitely π-stacked redox-active N-methyl bipyridinium cations with near-planar structures are sandwiched by cyanide-bridged Mn II -Fe III or Zn II -Fe III layers. Radical-π interactions among the infinitely πstacked N-methyl bipyridinium components favor the extension of absorption range. Both semiconductors show light/thermo-induced color change with the formation of stable radicals. They have intrinsic photocurrent response in the range of at least 355-2400 nm, which exceeds all reported values for known single-component organic-based semiconductors.

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confidence: 99%

Directed self-assembly of viologen-based 2D semiconductors with intrinsic UV–SWIR photoresponse after photo/thermo activation

et al. 2020

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“…This type of PDMPI is out of the scope of this review and the readers are referred to a recent review on the topic. [74] 3.…”

Section: Adsorptionmentioning

confidence: 99%

Preprogrammed Dynamic Microstructured Polymer Interfaces

Tokarev

Minko

2019

Adv Funct Materials

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The advancement of new-generation complex integrated responsive systems depends on the progress in the development of functional stimuli-responsive polymer components that could be put together and engineered to perform in concert as an ensemble. This progress report highlights recent substantial progress in the development of such soft-matter components capable of changes according to preprogrammed scenarios. The components interact via interfaces that play a key role in the performance of the microstructured materials. The list of the most important properties that can be changed by altering the interfaces upon external stimuli includes gating, transport, release, wetting, adhesion, and self-regeneration (healing) realized in different architectures of soft stimuli-responsive materials.

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“…Encouraged by the fascinating properties of the viologen unit, many coordination polymers with viologen‐derived ligands (especially those with carboxylate groups) have been synthesized in recent years . The metal–organic hybridization not only modulates the viologen‐based chromogenic properties but also can impart new responsive properties, such as stimulus‐modulated luminescent, magnetic, nonlinear optical, conductive, and piezoelectric properties . However, most of these coordination polymers are nonporous or easily undergo framework collapse.…”

Section: Introductionmentioning

confidence: 99%

Versatile and Switchable Responsive Properties of a Lanthanide‐Viologen Metal–Organic Framework

Gong

Sui

et al. 2019

Small

104

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Metal–organic frameworks (MOFs) provide intriguing platforms for the design of responsive materials. It is challenging to mobilize as many components as possible of a MOF to collaboratively accomplish multiple responsive properties. Here, reversible photochromism, piezochromism, hydrochromism, ionochromism, and luminescence modulation of an ionic Eu(III) MOF is reported furnished by cationic electron‐deficient viologen units and exchangeable guest anions. Mechanistically, the extraordinarily versatile responsive properties are owed to electron transfer (ET), charge transfer (CT), and energy transfer, involving viologen as electron acceptor, anion as electron donor, luminescing Eu(III) as energy donor, and anion‐viologen CT complex or ET‐generated radical as energy acceptor (luminescence quencher). Moreover, guest anions and waters provide flexible handles to control the ET‐based responsive properties. Water release/reuptake or exchange with organic solvents can switch on/off the response to light, while reversible anion exchange can disenable or awaken the responses to pressure, light, and water release/reuptake. The impacts of water and anions on ET are justified by the high polarity and hydrogen‐bonding capability of water, the different electron donor strength of anions, and the strong I−‐viologen CT interactions. The rich responsive behaviors have great implications for applications such as pressure sensors, iodide detection, and chemical logic gates.

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Bipyridinium derivative-based coordination polymers: From synthesis to materials applications

Cited by 230 publications

References 159 publications

Directed self-assembly of viologen-based 2D semiconductors with intrinsic UV–SWIR photoresponse after photo/thermo activation

Directed self-assembly of viologen-based 2D semiconductors with intrinsic UV–SWIR photoresponse after photo/thermo activation

Preprogrammed Dynamic Microstructured Polymer Interfaces

Versatile and Switchable Responsive Properties of a Lanthanide‐Viologen Metal–Organic Framework

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