Solvent-vapor-annealed A–D–A-type semicrystalline conjugated small molecules for flexible ambipolar field-effect transistors

This paper reports a series of acceptor–donor–acceptor-type small molecules based on an oligothiophene–phenylene core with three different electron-accepting terminal groups—dicyanovinyl, cyano-rhodanine, and cyano-indanone, respectively—for application to flexible ambipolar organic field-effect transistors.

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Acceptor-donor-acceptor small molecules based on fuse ring and 2-(2-oxindolin-3-ylidene)malononitrile derivatives for solution-processed n-type organic field-effect transistors

Synthetic Metals ◽

10.1016/j.synthmet.2019.116143 ◽

2019 ◽

Vol 256 ◽

pp. 116143

Author(s):

Guobing Zhang ◽

Mingxiang Sun ◽

Weiwei Wang ◽

Longzhen Qiu

Keyword(s):

Small Molecules ◽

Field Effect ◽

Field Effect Transistors ◽

Organic Field Effect Transistors ◽

Solution Processed ◽

Donor Acceptor

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Improved charge transport in fused-ring bridged hemi-isoindigo-based small molecules by incorporating a thiophene unit for solution-processed organic field-effect transistors

Journal of Materials Chemistry C ◽

10.1039/c9tc05374c ◽

2020 ◽

Vol 8 (4) ◽

pp. 1398-1404

Author(s):

Guobing Zhang ◽

Ruikun Chen ◽

Yue Sun ◽

Boseok Kang ◽

Mingxiang Sun ◽

...

Keyword(s):

Charge Transport ◽

Small Molecules ◽

Field Effect ◽

Field Effect Transistors ◽

Organic Field Effect Transistors ◽

Solution Processed ◽

Fused Ring ◽

Donor Acceptor

Two acceptor–donor–acceptor small molecules based on fused ring as donor, and hemi-isoindigo units as acceptors were synthesized and characterized for solution-processed organic field-effect transistors.

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Oligofuran–Benzothiadiazole Co-oligomers: Synthesis, Optoelectronic Properties and Reactivity

Organic Materials ◽

10.1055/s-0041-1729853 ◽

2021 ◽

Vol 03 (02) ◽

pp. 303-308

Author(s):

Dror Ben Abba Amiel ◽

Choongik Kim ◽

Ori Gidron

Keyword(s):

Organic Solar Cells ◽

Field Effect ◽

Field Effect Transistors ◽

Organic Light Emitting Diodes ◽

Organic Field Effect Transistors ◽

Active Materials ◽

Light Emitting ◽

Organic Light ◽

Donor Acceptor ◽

Optical Bandgaps

Donor–acceptor–donor (DAD) triad systems are commonly applied as active materials in ambipolar organic field-effect transistors, organic solar cells, and NIR-emitting organic light-emitting diodes. Often, these triads utilize oligothiophenes as donors, whereas their oxygen-containing analogs, oligofurans, are far less studied in this setup. Here we introduce a family of DAD triads in which the donors are oligofurans and the acceptor is benzothiadiazole. In a combined computational and experimental study, we show that these triads display optical bandgaps similar to those of their thiophene analogs, and that a bifuran donor is sufficient to produce emission in the NIR spectral region. The presence of a central acceptor unit increases the photostability of oligofuran-based DAD systems compared with parent oligofurans of the similar length.

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