High-mobility band-like charge transport in a semiconducting two-dimensional metal–organic framework

Dong, Renhao; Han, Peng; Arora, Himani; Ballabio, Marco; Karakus, Melike; Zhang, Zhe; Shekhar, Chandra; Adler, Peter; Petkov, Petko St.; Erbe, Artur; Mannsfeld, Stefan C. B.; Felser, Claudia; Heine, Thomas; Bonn, Mischa; Feng, Xinliang; Cánovas, Enrique

doi:10.1038/s41563-018-0189-z

Cited by 411 publications

(346 citation statements)

References 41 publications

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“…[48][49][50] These types of MOFs, such as 1D single-walled MOF nanotubes, 1D hexagonal MOF nanorods, ultrathin 2D MOF nanosheets, [51][52][53] have similar morphological features to those of the other 1D or 2D nanomaterials, which endows them with distinctive dimensional-dependent properties including high aspect ratio and abundant accessible active sites. [60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75] Although the advantages and challenges of 1D metal-organic nanotubes [76] and 2D MOF nanosheets [48,50,56] have been well summarized by several previous review articles, the research field of LD MOFs is currently at a stage of rapid development, as indicated by annually increased amount of publications (Figure 2). To achieve effective and controllable preparation of LD MOFs, a large number of synthetic methods have been developed, such as template method, ultrasonic exfoliation, surfactant-assisted growth, three-layer method, etc.…”

Section: Introductionmentioning

confidence: 99%

Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

et al. 2019

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Low‐dimensional metal–organic frameworks (LD MOFs) have attracted increasing attention in recent years, which successfully combine the unique properties of MOFs, e.g., large surface area, tailorable structure, and uniform cavity, with the distinctive physical and chemical properties of LD nanomaterials, e.g., high aspect ratio, abundant accessible active sites, and flexibility. Significant progress has been made in the morphological and structural regulation of LD MOFs in recent years. It is still of great significance to further explore the synthetic principles and dimensional‐dependent properties of LD MOFs. In this review, recent progress in the synthesis of LD MOF‐based materials and their applications are summarized, with an emphasis on the distinctive advantages of LD MOFs over their bulk counterparties. First, the unique physical and chemical properties of LD MOF‐based materials are briefly introduced. Synthetic strategies of various LD MOFs, including 1D MOFs, 2D MOFs, and LD MOF‐based composites, as well as their derivatives, are then summarized. Furthermore, the potential applications of LD MOF‐based materials in catalysis, energy storage, gas adsorption and separation, and sensing are introduced. Finally, challenges and opportunities of this fascinating research field are proposed.

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Section: Introductionmentioning

confidence: 99%

Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

et al. 2019

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“…Photoconductivity by Terahertz Spectroscopy : Terahertz (THz) spectroscopy has been demonstrated as a powerful non‐contact method for time‐resolving photoconductivity properties of semiconductors . The intrinsic charge transport properties of PI‐2DP 1 was evaluated by THz spectroscopy.…”

Section: Resultsmentioning

confidence: 99%

Highly Crystalline and Semiconducting Imine‐Based Two‐Dimensional Polymers Enabled by Interfacial Synthesis

Sahabudeen

Ballabio

et al. 2020

Angewandte Chemie

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Single‐layer and multi‐layer 2D polyimine films have been achieved through interfacial synthesis methods. However, it remains a great challenge to achieve the maximum degree of crystallinity in the 2D polyimines, which largely limits the long‐range transport properties. Here we employ a surfactant‐monolayer‐assisted interfacial synthesis (SMAIS) method for the successful preparation of porphyrin and triazine containing polyimine‐based 2D polymer (PI‐2DP) films with square and hexagonal lattices, respectively. The synthetic PI‐2DP films are featured with polycrystalline multilayers with tunable thickness from 6 to 200 nm and large crystalline domains (100–150 nm in size). Intrigued by high crystallinity and the presence of electroactive porphyrin moieties, the optoelectronic properties of PI‐2DP are investigated by time‐resolved terahertz spectroscopy. Typically, the porphyrin‐based PI‐2DP 1 film exhibits a p‐type semiconductor behavior with a band gap of 1.38 eV and hole mobility as high as 0.01 cm2 V−1 s−1, superior to the previously reported polyimine based materials.

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“…The AB slipped‐parallel model with slightly slipped stacking of every two layers was energetically favored (see Figure S6). The broad (002) peak at 2 θ =14.68° (28.48° for λ =1.54178 Å) indicated short‐range ordering along the c ‐axis as compared with the narrow and sharp (100) peak at 2 θ =3.08° (5.95° for λ =1.54178 Å) of the ab plane, which is commonly observed for 2D π‐conjugated PCP/MOFs . The N 2 sorption isotherm at 77 K of Cu 3 (HHTP)(THQ) shows a BET surface area of approximately 441.2 m 2 g −1 (Figure d), thus revealing an intrinsically high porosity that cannot be achieved simply through a nonporous AB stacking structure with 60° rotations between neighboring layers or a significantly slipped parallel structure (see Figures S7 and S8).…”

Section: Figurementioning

confidence: 90%

A Dual‐Ligand Porous Coordination Polymer Chemiresistor with Modulated Conductivity and Porosity

Yao

Zheng

et al. 2019

Angewandte Chemie

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Single‐ligand‐based electronically conductive porous coordination polymers/metal–organic frameworks (EC‐PCPs/MOFs) fail to meet the requirements of numerous electronic applications owing to their limited tunability in terms of both conductivity and topology. In this study, a new 2D π‐conjugated EC‐MOF containing copper units with mixed trigonal ligands was developed: Cu3(HHTP)(THQ) (HHTP=2,3,6,7,10,11‐hexahydrotriphenylene, THQ=tetrahydroxy‐1,4‐quinone). The modulated conductivity (σ≈2.53×10−5 S cm−1 with an activation energy of 0.30 eV) and high porosity (ca. 441.2 m2 g−1) of the Cu3(HHTP)(THQ) semiconductive nanowires provided an appropriate resistance baseline and highly accessible areas for the development of an excellent chemiresistive gas sensor.

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High-mobility band-like charge transport in a semiconducting two-dimensional metal–organic framework

Cited by 411 publications

References 41 publications

Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

Highly Crystalline and Semiconducting Imine‐Based Two‐Dimensional Polymers Enabled by Interfacial Synthesis

A Dual‐Ligand Porous Coordination Polymer Chemiresistor with Modulated Conductivity and Porosity

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