Bipolar redox behaviour, field-effect mobility and transistor switching of the low-molecular azo glass AZOPD

Arlt, Michael; Scheffler, Ayna; Suske, Irina; Eschner, Michael; Saragi, Tobat P. I.; Salbeck, Josef; Fuhrmann‐Lieker, Thomas

doi:10.1039/c0cp00643b

Cited by 15 publications

(11 citation statements)

References 30 publications

(36 reference statements)

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“…Recent studies, in contrast, have used photochromic molecules directly as transistor channels, aiming at improving the on/off ratios. Arlt et al used an azobenzene derivative for a channel layer, but the hole mobility and on/off ratio were still low: 9.8 × 10 −6 cm 2 Vs −1 and I on / I off = 2.5 [120]. Hayakawa et al used a diarylethene molecule as the transistor channel to give a direct impact of photochromism on the drain current [121].…”

Section: Light-receiving Ofetsmentioning

confidence: 99%

Recent progress in photoactive organic field-effect transistors

Wakayama

Hayakawa

Seo

2014

Science and Technology of Advanced Materials

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Recent progress in photoactive organic field-effect transistors (OFETs) is reviewed. Photoactive OFETs are divided into light-emitting (LE) and light-receiving (LR) OFETs. In the first part, LE-OFETs are reviewed from the viewpoint of the evolution of device structures. Device performances have improved in the last decade with the evolution of device structures from single-layer unipolar to multi-layer ambipolar transistors. In the second part, various kinds of LR-OFETs are featured. These are categorized according to their functionalities: phototransistors, non-volatile optical memories, and photochromism-based transistors. For both, various device configurations are introduced: thin-film based transistors for practical applications, single-crystalline transistors to investigate fundamental physics, nanowires, multi-layers, and vertical transistors based on new concepts.

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Section: Light-receiving Ofetsmentioning

confidence: 99%

Recent progress in photoactive organic field-effect transistors

Wakayama

Hayakawa

Seo

2014

Science and Technology of Advanced Materials

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“…Zheng et al first reported that pure (2 R ,4 S )-difenoconazole has better bioactivity and lower ecotoxicity compared with its stereoisomers, showing excellent environmental behaviors in vegetables and soil . Wu’s group found that cis -dichlorodiamineplatinum(II) is an efficient drug to cancer cells, whereas its trans form does not work at all. , Fuhrmann-Lieker et al synthesized an azo compound with photosensitivity via E/Z isomerization and it can thus be regarded as a multifunctional organic field-effect transistor . Considering these attractive properties as well as miscellaneous applications in life and material sciences, obtaining a pure isomer is very important and intriguing even though it is so tough to synthesize and separate pure E isomer and Z isomer.…”

Section: Introductionmentioning

confidence: 99%

Configuration-Controllable E/Z Isomers Based on Tetraphenylethene: Synthesis, Characterization, and Applications

Tian

Lin

Chen

et al. 2019

ACS Appl. Mater. Interfaces

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Configuration-controllable E/Z isomers based on tetraphenylethene were prepared with a facile and effective method. First, compounds 1 and 2, configuration-controllable precursors of E/Z isomers, were synthesized. Then, pure E/Z isomers were obtained via Suzuki reaction, avoiding the difficulties of separation. The conformational changes of E/Z isomers can occur through photoactivation. Importantly, red-shifts of 66 nm from 6 (E-) to 3 (Z-) and 58 nm from 7 (E-) to 4 (Z-) were observed remarkably on the photoluminescence (PL) emission spectra. The Z isomer showed a longer fluorescence lifetime compared with the E isomer. The Z isomers 3 and 4 exhibited piezofluorochromism under grinding, whereas the E isomers 6 and 7 showed no such behaviors. The E isomer has better thermal stability than the Z isomer. Lastly, graphene-like molecules were synthesized with the FeCl3/CH3NO2 system. The E and Z isomers after oxidation showed negligible differences in the PL emission spectra because the effective conjugated lengths of oxidized E and Z isomers were both extended. Furthermore, the fabricated field-effect transistors showed nice performance with mobilities of 0.92 and 1.14 cm–2 V–1 s–1 at low operating voltages, respectively.

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“…A very interesting molecule for this work is the low molecular azo glass named N,N’ -bis(phenyl)- N,N’ -bis((4-phenylazo)-phenyl)benzidine (AZOPD), which can be used for photo-induced structuring for holographic data storage devices [ 52 ]. Because of its extraordinary electrochemical properties it can be considered as a multifunctional organic semiconductor (e.g., as an hole transporting material in organic light emitting devices (OLED) or as a photo-switch in organic transistors) [ 54 , 55 ].…”

Section: Introductionmentioning

confidence: 99%

Reversible Photo-Induced Reshaping of Imprinted Microstructures Using a Low Molecular Azo Dye

et al. 2022

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A blend of low molecular azo glass (AZOPD) and polystyrene (PS) were used for the systematic investigation of photo-induced stretching and recovery of nanoimprinted structures. For this purpose, light and heat was used as recovery stimuli. The AZOPD/PS microstructures, fabricated with thermal nanoimprint lithography (tNIL), comprises three different shapes (circles, crosses and squares) and various concentrations of AZOPD fractions. The results show a concentration-dependent reshaping. Particularly the sample with 43 w-% of the AZOPD fraction have shown the best controllable recovery for the used parameters. A possible explanation for shape recovery might be the stabilizing effect of the PS-matrix.

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Bipolar redox behaviour, field-effect mobility and transistor switching of the low-molecular azo glass AZOPD

Cited by 15 publications

References 30 publications

Recent progress in photoactive organic field-effect transistors

Recent progress in photoactive organic field-effect transistors

Configuration-Controllable E/Z Isomers Based on Tetraphenylethene: Synthesis, Characterization, and Applications

Reversible Photo-Induced Reshaping of Imprinted Microstructures Using a Low Molecular Azo Dye

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