Photoleitfähigkeit in Dünnfilmen Metall‐organischer Gerüste

Liu, Xiaojing; Kozłowska, Mariana; Okkali, Timur; Wagner, Danny; Higashino, Tomohiro; Brenner‐Weiß, Gerald; Marschner, Stefan; Fu, Zhaoming; Zhang, Qiang; Imahori, Hiroshi; Bräse, Stefan; Wenzel, Wolfgang; Wöll, Christof; Heinke, Lars

doi:10.1002/ange.201904475

Cited by 18 publications

(11 citation statements)

References 61 publications

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“…In view of their electronic and photophysical properties, metalloporphyrins have been extensivelyu sed as building blocks for the construction of MOFs finding application in, for example, electrocatalysis, [194][195][196] photocatalysis, [197,198] sensing [199] or photovoltaics. [146,[200][201][202] In addition, the planar structure of porphyrins makest hem suitable building blocks for the fabrication of 2D layered MOF thin films toward their integration in electronic devicesu sing different methods. [200][201][202][203] For example, Wçll et al presented the construction of some photovoltaic devices based on crystalline and oriented Zn II -Por 2D MOF thin films by using al iquid-phase epitaxy method ( Figure 21).…”

Section: Porphyrin (Por)mentioning

confidence: 99%

“…[146,[200][201][202] In addition, the planar structure of porphyrins makest hem suitable building blocks for the fabrication of 2D layered MOF thin films toward their integration in electronic devicesu sing different methods. [200][201][202][203] For example, Wçll et al presented the construction of some photovoltaic devices based on crystalline and oriented Zn II -Por 2D MOF thin films by using al iquid-phase epitaxy method ( Figure 21). [200,201] Interestingly,t he photophysical properties and generated photocurrent of the MOF-based devices were modulated by introducing electron-donatingg roups into the porphyrin skeleton.…”

Section: Porphyrin (Por)mentioning

confidence: 99%

“…[201] More recently,d onor-acceptor interactions between electron-acceptor porphyrin-based 2D MOF and electron-acceptorC 60 were demonstrated to enhancet he photoconductivity. [202] Light-harvesting [204] and non-linear optical (NLO) properties [205] of some porphyrin-based MOFs have also been studied taking advantage of their optical properties. The first example of ap hthalocyanine-based MOF was reported in 2018 based on tetracatechol copper Pcs ligands bridged by square-planarC u II ions.…”

Section: Porphyrin (Por)mentioning

confidence: 99%

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Electroactive Organic Building Blocks for the Chemical Design of Functional Porous Frameworks (MOFs and COFs) in Electronics

Souto

Strutyński

Melle‐Franco

et al. 2020

Chemistry A European J

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Electroactive organic molecules have received a lot of attention in the field of electronics because of their fascinating electronic properties, easy functionalization and potential low cost towards their implementation in electronic devices. In recent years, electroactive organic molecules have also emerged as promising building blocks for the design and construction of crystalline porous frameworks such as metal–organic frameworks (MOFs) and covalent‐organic frameworks (COFs) for applications in electronics. Such porous materials present certain additional advantages such as, for example, an immense structural and functional versatility, combination of porosity with multiple electronic properties and the possibility of tuning their physical properties by post‐synthetic modifications. In this Review, we summarize the main electroactive organic building blocks used in the past few years for the design and construction of functional porous materials (MOFs and COFs) for electronics with special emphasis on their electronic structure and function relationships. The different building blocks have been classified based on the electronic nature and main function of the resulting porous frameworks. The design and synthesis of novel electroactive organic molecules is encouraged towards the construction of functional porous frameworks exhibiting new functions and applications in electronics.

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Section: Porphyrin (Por)mentioning

confidence: 99%

Section: Porphyrin (Por)mentioning

confidence: 99%

Section: Porphyrin (Por)mentioning

confidence: 99%

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Electroactive Organic Building Blocks for the Chemical Design of Functional Porous Frameworks (MOFs and COFs) in Electronics

Souto

Strutyński

Melle‐Franco

et al. 2020

Chemistry A European J

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“…Other additives, such as metal nanocrystals, fullerenes, etc., are also designed to fabricate conductive MOFs composites. [ 43,78,150 ] Recently, C 60 guests were also in situ incorporated into pores of the surface‐mounted MOF (SURMOF) thin films containing porphyrin unit in the organic building unit by layer‐by‐layer process (Figure 8f). [ 78 ] The donor–acceptor system between the porphyrin of the host framework acting as electron donor and the C 60 guests acting as acceptor can largely improve the electrical conductivity of the SURMOFs under blue light irradiation.…”

Section: The Design and Synthesis Of Conductive Mofsmentioning

confidence: 99%

Conductive Metal–Organic Frameworks: Design, Synthesis, and Applications

et al. 2020

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fabricated. Combined with controlled synthesis, MOF materials are endowed with abundant various of structures, morphologies, and properties. [8-11] In addition, the as-prepared MOFs can be artificially modified via postsynthetic approaches utilizing their available pores and active sites of metal clusters or linkers. [12,13] As a result, not only the number of MOFs is further increased but also many interesting properties, such as high specific surface areas, tailorable pore sizes, modifiable structures, and properties are endowed with MOFs, which make them become potential candidates in storage/separation, catalysis, sensing, etc. [14,15] Another important application of MOFs is that they can act as conductive materials for electrocatalysis, sensing, and energy conversion, etc. [16-19] The existence of quantitative amounts of active metal centers, permanent porosity, and structural rigidity can facilitate surface contact and mass transfer as well as increase catalysis stability, making MOFs as ideal electrocatalysts. [20-22] In addition, they possess high specific surface areas, tunable bandgaps, and good charge transport properties, which extend their applications in sensing and energy storage. [23] Besides, the morphologies and characteristics of MOFs can be artificially modified to form 1D, 2D, or 3D structures via liquid phase selfassembly, physical/chemical exfoliation, layer-by-layer assembly, etc., promoting their applications in electrochemical devices and electronics. [24-26] With further structural design through postsynthesized modification, the performances of MOFs can be largely improved, facilitating their applications as conductive materials. [27-29] However, most MOFs are intrinsically electrically insulated, which seriously hinders their electrochemical applications. [29] The connected rigid metal ions and redox-inactive organic ligands increase the energy barrier for electron transfer, making them as electrical insulators. To overcome the drawbacks of MOFs, many feasible strategies have been adopted to promote the electron transfer in the structures of MOFs. [27,30-32] The high electrical conductivity of MOFs can be realized by integrating the conjugated planes or 1D chains in the structures, which relies on particular structural designs. [33-37] The conductivity of the MOFs can also be increased via doping with guest Metal-organic frameworks (MOFs) have aroused worldwide interest over the last two decades due to their various excellent properties, such as porosity, modifiability, stability, etc. Based on these unique features, they have been widely exploited for applications from electrocatalysis to electrochemical devices. However, most MOFs are inherently insulated due to the lack of free charge carriers and low-energy barriers for charge transfer, which largely restricts their further electrochemical applications. By imparting MOFs with electrical conductivity, their electrochemical process and catalysis efficiency can be effectively improved. Similarly, their applications in sensors, secon...

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“…In just about the same time, the potential utility of photoactive MOF composites with C 60 were in the process of being examined thoroughly. [113] Heinke and co-workers reported on the spin coating thin films of surface-mounted metalÀ organic frameworks (SURMOFs), Zn(TPP)�C 60 (TPP = 5,15-bis(3,4,5trimethoxyphenyl)-10,20-bis(4-carboxyphenyl)porphyrin) (thickness of 50 nm) and Cu(BPDC)�C 60 (BPDC = biphenyl-4,4'-dicarboxylate) (thickness of 270 nm) in which the C 60 was encapsulated within them. A PXRD study revealed that the process of C 60 doping did not change the intrinsic crystallinity of the Zn(TPP).…”

Section: Mofs Doped With Carbon Materialsmentioning

confidence: 99%

Hydrophobic Metal−Organic Frameworks and Derived Composites for Microelectronics Applications

Thanasekaran

Liu

et al. 2021

Chemistry A European J

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The extraordinary characteristic features of metal−organic frameworks (MOFs) make them applicable for use in a variety of fields but their conductivity in microelectronics over a wide relative humidity (RH) range has not been extensively explored. To achieve good performance, MOFs must be stable in water, i. e., under humid conditions. However, the design of ultrastable hydrophobic MOFs with high conductivity for use in microelectronics as conducting and dielectric materials remains a challenge. In this Review, we discuss applications of an emerging class of hydrophobic MOFs with respect to their use as active sensor coatings, tunable low‐κ dielectrics and conductivity, which provide high‐level roadmap for stimulating the next steps toward the development and implementation of hydrophobic MOFs for use in microelectronic devices. Several methodologies including the incorporation of long alkyl chain and fluorinated linkers, doping of redox‐active 7,7,8,8‐tetracyanoquinodimethane (TCNQ), the use of guest molecules, and conducting polymers or carbon materials in the pores or surface of MOFs have been utilized to produce hydrophobic MOFs. The contact angle of a water droplet and a coating can be used to evaluate the degree of hydrophobicity of the surface of a MOF. These unique advantages enable hydrophobic MOFs to be used as a highly versatile platform for exploring multifunctional porous materials. Classic representative examples of each category are discussed in terms of coordination structures, types of hydrophobic design, and potential microelectronic applications. Lastly, a summary and outlook as concluding remarks in this field are presented. We envision that future research in the area of hydrophobic MOFs promise to provide important breakthroughs in microelectronics applications.

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Photoleitfähigkeit in Dünnfilmen Metall‐organischer Gerüste

Cited by 18 publications

References 61 publications

Electroactive Organic Building Blocks for the Chemical Design of Functional Porous Frameworks (MOFs and COFs) in Electronics

Electroactive Organic Building Blocks for the Chemical Design of Functional Porous Frameworks (MOFs and COFs) in Electronics

Conductive Metal–Organic Frameworks: Design, Synthesis, and Applications

Hydrophobic Metal−Organic Frameworks and Derived Composites for Microelectronics Applications

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