Transistor properties of salen-type metal complexes

Koyama, Kyohei; Iijima, Kazutoshi; Yoo, Dongho; Mori, Toshiyuki

doi:10.1039/d0ra05449f

Cited by 5 publications

(5 citation statements)

References 63 publications

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“…However, most of them have relatively low carrier mobilities (usually 10 À3 -10 À5 cm 2 V À1 s À1 ) with the exception of a few cases. [71][72][73] For instance, Zade, Narayan and coworkers in 2014 prepared two thiophene-based salphen-metal complexes, i.e., Cu(N 2 O 2 ) 16 and Zn(N 2 O 2 ) 17, and then constructed solution-processed OFETs with a BGTC structure. 74 The devices demonstrated excellent p-type behaviours with maximum m h of up to 0.7 and 1.5 cm 2 V À1 s À1 for 16 and 17, respectively, benefiting from the ultra-close p-p stacking in their spin-coating films.…”

Section: Metal Diamine/dithiolene and Polypyridine Metal Complexesmentioning

confidence: 99%

“…However, most of them have relatively low carrier mobilities (usually 10 −3 –10 −5 cm 2 V −1 s −1 ) with the exception of a few cases. 71–73 For instance, Zade, Narayan and coworkers in 2014 prepared two thiophene-based salphen-metal complexes, i.e. , Cu(N 2 O 2 ) 16 and Zn(N 2 O 2 ) 17 , and then constructed solution-processed OFETs with a BGTC structure.…”

Section: Mom-based Ofetsmentioning

confidence: 99%

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Advances in organic field-effect transistors based on metal–organic coordination materials and applications

Gong,

Guo,

Zhong

2023

Mater. Chem. Front.

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Section: Metal Diamine/dithiolene and Polypyridine Metal Complexesmentioning

confidence: 99%

Section: Mom-based Ofetsmentioning

confidence: 99%

Advances in organic field-effect transistors based on metal–organic coordination materials and applications

Gong,

Guo,

Zhong

2023

Mater. Chem. Front.

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“…[19] Studies of transistors based on salen crystals containing various metal ions exhibit strong effects of the molecular conformation on the stacking of the crystals, which in turn influence the conductivity of the materials. [20] The role of the metal centers is elucidated by recording conductance histograms in conventional stretching curves and, in addition, thousands of I(V) curves at various states of the opening and closing of the single-molecule junctions. We show that the combined information extracted from both characterization methods leads to a consistent picture of the variations induced by the different metal centers.…”

Section: Introductionmentioning

confidence: 99%

Single‐Molecule Doping: Conductance Changed By Transition Metal Centers in Salen Molecules

Kilibarda

Strobel

Sendler

et al. 2021

Adv Elect Materials

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The field of molecular electronics has progressed in recent years and demonstrated functionalities such as singlemolecule switches, [1,2] field emitters, [3] and even gateable structures. [4,5] Variations of the overall conductance of all these structures in nominally identical junctions were, however, large. Differences in conductance between these junctions were identified by recording conductance histograms of all measured junctions. Large conductance variations could be demonstrated between highand low-conductance states by using quantum interference effects [5] or by changing the molecular structures in a controlled way. [6] To be able to use molecules as future components in electronic applications, it would be useful not only to have binary, high and low, conductance states available, but also a range of possible modifications to fine-tune the exact properties of the circuit. Metallorganic components lend themselves for this purpose because of the broad palette of ions, promising also a broad range of achievable conductance properties. The influence of metal ions incorporated into porphyrin molecules has already been investigated, showing a decrease in conductance due to destabilization of the π-system by metalThe creation of molecular components for use as electronic devices has made enormous progress. In order to advance the field further toward realistic electronic concepts, methods for the controlled modification of the conducting properties of the molecules contacted by metallic electrodes need to be further developed. Here a comprehensive study of charge transport in a class of molecules that allows modifications by introducing metal centers into organic structures is presented. Single molecules are electrically contacted and characterized in order to understand the role of the metal centers in the conductance mechanism through the molecular junctions. It is shown that the presence of single metal ions modifies the energy levels and the coupling of the molecules to the electrical contacts, and that these modifications lead to systematic variations in the statistical behavior of transport properties of the molecular junctions. A rigorous statistical analysis of thousands of junctions is performed to reveal this correlation. The understanding of the role of the metal ion in the resulting conductance properties is an essential step toward the development of molecular electronic circuits.

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“…Sensors based on electrodes modified with salen‐type complex polymers [23] or charge‐storage polymers [24] constitute other electrochemical uses. Even transistor properties of several materials based on salen‐derived metal complexes were discussed [25] …”

Section: Introductionmentioning

confidence: 99%

Interactions Between Two Cobalt Salen Centers Bridged by Non‐Conjugated Linkers**

Speiser

Zitzer

2021

ChemElectroChem

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Tetra‐tert‐butyl‐Co(salen), an amido‐substituted derivative and a series of bis(salen) complexes of cobalt(II) with the two metal centers bridged by flexible, non‐conjugated bis‐amido linkers are investigated by cyclic voltammetry, chronoamperometry, and differential pulse voltammetry in four electrolytes (acetonitrile or dichloromethane, conventional or weakly coordinating anion). Cyclic voltammograms are analyzed by simulation based on E or EE mechanisms. The compounds are characterized by formal potentials E0 , diffusion coefficients D and number of electrons transferred, n. Differences in the E0 values for the subsequent two one‐electron transfer steps are used as indicators for the interaction between the metal centers in the bis(salen) complexes. The effects of solvent and supporting electrolyte are consistent with the assumption of electrostatic through‐space interactions and coordination to the Co centers. In the dinuclear complexes step‐wise electron transfers according to normal potential ordering makes these compounds “pretenders” in Winter's terms (R.F. Winter, Organometallics 2014, 33, 4517–4536).

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Transistor properties of salen-type metal complexes

Abstract: Schiff base complexes exhibit p-channel transistor properties irrespective of metal atoms because the SOMO does not participate in the conduction.

Cited by 5 publications

References 63 publications

Advances in organic field-effect transistors based on metal–organic coordination materials and applications

Advances in organic field-effect transistors based on metal–organic coordination materials and applications

Single‐Molecule Doping: Conductance Changed By Transition Metal Centers in Salen Molecules

Interactions Between Two Cobalt Salen Centers Bridged by Non‐Conjugated Linkers**

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