Hexaarylbenzene based high-performance p-channel molecules for electronic applications

Hexaarylbenzene-based molecules find potential applications in organic electronics due to wider energy gap, high HOMO level, higher photoconductivity, electron-rich nature, and high hole-transporting property. Due to the unique propeller structure, these molecules show low susceptibility towards sel...

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Bibliographic Details
Published in:RSC advances 2021-03, Vol.11 (19), p.11672-1171
Main Authors: Devibala, Panneerselvam, Balambiga, Balu, Noureen, Shana, Nagarajan, Samuthira
Format: Article
Language:English
Subjects:
Charge efficiency
Charge materials
Charge transport
Chemistry
Chromophores
Energy gap
Field effect transistors
Logic circuits
Memory devices
Molecular structure
Organic light emitting diodes
Photoconductivity
Photovoltaic cells
Semiconductor devices
Structural modification techniques
Switches
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Summary:Hexaarylbenzene-based molecules find potential applications in organic electronics due to wider energy gap, high HOMO level, higher photoconductivity, electron-rich nature, and high hole-transporting property. Due to the unique propeller structure, these molecules show low susceptibility towards self-aggregation. This property can be tailored by proper molecular engineering by the incorporation of appropriate groups. Therefore, hexaarylbenzene chromophores are widely used as the materials for high-efficiency light-emitting materials, charge transport materials, host materials, redox materials, photochemical switches, and molecular receptors. This review highlights the diverse structural modification techniques used for the synthesis of symmetrical and unsymmetrical structures. Also, the potential applications of these molecules in organic light-emitting diodes, organic field-effect transistors, organic photovoltaics, organic memory devices, and logic circuits are discussed. The latest progress on semiconducting applications of hexaarylbenzene is reviewed, including a fundamental overview of geometry, synthetic methods, structure-property relationship, design strategies and electronic applications in OFET, OLED and OPV.
ISSN:2046-2069
2046-2069
DOI:10.1039/d1ra00217a