Polymorphism in 9,9-diarylfluorene-based organic semiconductors: influence on optoelectronic functions.
@article{Kim2014PolymorphismI9,
title={Polymorphism in 9,9-diarylfluorene-based organic semiconductors: influence on optoelectronic functions.},
author={Jun Yun Kim and Takuma Yasuda and Yu Seok Yang and Naoki Matsumoto and Chihaya Adachi},
journal={Chemical communications},
year={2014},
volume={50 13},
pages={
1523-6
}
}Polymorphism is observed in 9,9-diarylfluorene-based organic semiconductors. The effects of rich phase behavior on the charge transport and photoluminescence properties of these semiconductors are investigated. Polymorphism control is a rational way to tailor the optoelectronic functions of their films.
21 Citations
Hole-Transporting Spirothioxanthene Derivatives as Donor Materials for Efficient Small-Molecule-Based Organic Photovoltaic Devices
- Chemistry, Materials Science
- 2014
A new class of hole-transporting spirothioxanthene derivatives has been synthesized and characterized. Their photophysical, electrochemical and thermal properties have been studied. These compounds…
A series of spirofluorene-based host materials for efficient phosphorescent organic light-emitting diodes
- ChemistryOrganic Electronics
- 2018
Thermally Activated Delayed Fluorescence from a Spiro-diazafluorene Derivative
- Chemistry
- 2014
A spiro compound DPAA-AF combining an electron-accepting diazafluorene unit and an electron-donating bis(diphenylamino)acridane unit has been synthesized and used as an emitter in organic light-emi...
Bifunctional Heterocyclic Spiro Derivatives for Organic Optoelectronic Devices.
- ChemistryACS applied materials & interfaces
- 2016
Taking advantage of their excellent hole-transporting properties, highly efficient small-molecular organic photovoltaic devices based on these heterocyclic compounds as donors with very low dopant concentrations have been prepared; particularly, a high open-circuit voltage and power conversion efficiency have been realized.
Tuning polymorphism in 2,3-thienoimide capped oligothiophene based field-effect transistors by implementing vacuum and solution deposition methods
- Materials Science, Physics
- 2018
We report on the investigation of the influence of the molecular packing and film morphology on the field-effect charge mobility in 2,3-thienoimide-based oligothiophenes semiconductors (Cn-NT4N).…
Straightforward Synthesis and Properties of Highly Fluorescent [5]- and [7]-Helical Dispiroindeno[2,1-c]fluorenes.
- ChemistryAngewandte Chemie
- 2019
A general approach for synthesis of substituted [5]-helical dispiroindeno[2,1-c]fluorenes based on Rh-catalyzed intramolecular cyclotrimerization of triynes was presented and their photophysical and electrochemical properties were evaluated.
Spiro-Shaped cis-Stilbene/Fluorene Hybrid Template for the Fabrication of Small-Molecule Bulk Heterojunction Solar Cells
- Chemistry, Materials Science
- 2017
A spiro core appended with trithiophene arms and α-cyanoacrylate end groups was used for the first time in bulk heterojunction solar cell applications. The resulting device performance was evaluated…
Air-Stable Spirofluorene-Containing Ladder-Type Bis(alkynyl)borane Compounds with Readily Tunable Full Color Emission Properties.
- ChemistryChemistry
- 2016
A series of air-stable spiro-fused ladder-type boron(III) compounds has been designed, synthesized, and the electrochemistry and photophysical behavior have been characterized, demonstrating the potential applications of these bOron compounds in OLEDs.
Low-cost synthesis of heterocyclic spiro-type hole transporting materials for perovskite solar cell applications
- Chemistry
- 2018
Four heterocyclic spiro-type hole transporting materials (HTMs) carrying a spiro[fluorene-9,9′-xanthene] (SFX) (SFX-TPAM and SFX-TPA) or spiro[fluorene-9,9′-thioxanthene] (SFT) unit (SFT-TPAM and…
References
SHOWING 1-10 OF 30 REFERENCES
High-performance single crystal organic field-effect transistors based on two dithiophene-tetrathiafulvalene (DT-TTF) polymorphs.
- Materials Science, ChemistryAdvanced materials
- 2010
The performance of solution-prepared single crystal OFETs based on two different polymorphs of dithiophene-tetrathiafulvalene, which were investigated by confocal Raman spectroscopy and X-ray diffraction, show that both polymorphs exhibited excellent device performance.
Ter(9,9-diarylfluorene)s: highly efficient blue emitter with promising electrochemical and thermal stability.
- Chemistry, BiologyJournal of the American Chemical Society
- 2002
The X-ray structure analysis of ter(9,9'-spirobifluorene) (4aa) revealed that the conjugated chromophore adopts a helical conformation, which effectively releases the steric interaction between the fluorene moieties and prevents inter-chromophore interactions.
Spiroconjugation-enhanced intermolecular charge transport
- Chemistry
- 2004
We report charge-transport and related physical properties of terfluorenes with various C9 substitutions. Results show that by introducing slight spiroconjugation between a core chromophore and…
The structure of the blue luminescent ??-phase of tris(8-hydroxyquinoline)aluminium(iii) (Alq3)Electronic supplementary information (ESI) available: experimental section and crystallographic data. See http://www.rsc.org/suppdata/cc/b2/b209164j/
- Chemistry
- 2002
The existence of the facial isomer in the δ-phase of Alq3 is proven by X-ray structural analysis, revealing that both the different molecular structure and the weaker overlap of the π-orbitals of…
Phase dependence of single crystalline transistors of tetrathiafulvalene
- Materials Science
- 2007
The aim of this study is to establish the structure-properties relationship of tetrathiafulvalene (TTF). After this study (1) TTF crystals with α and β phases were controllably obtained by the cast…
Bifunctional star-burst amorphous molecular materials for OLEDs: achieving highly efficient solid-state luminescence and carrier transport induced by spontaneous molecular orientation.
- Materials Science, ChemistryAdvanced materials
- 2013
It is revealed that the spontaneous horizontal orientation of these light-emitting molecules in their molecular-condensed states leads to a remarkable enhancement of the electroluminescence efficiencies and carrier-transport properties.
Extremely low-threshold amplified spontaneous emission of 9,9′-spirobifluorene derivatives and electroluminescence from field-effect transistor structure
- Chemistry, Materials Science
- 2007
By doping 2,7-bis[4-(N-carbazole)phenylvinyl]-9,9′-spirobifluorene (spiro-SBCz) into a wide energy gap 4,4′-bis(9-carbazole)-2,2′-biphenyl (CBP) host, we demonstrate an extremely low ASE threshold of…
Band structure of the four pentacene polymorphs and effect on the hole mobility at low temperature.
- Materials ScienceThe journal of physical chemistry. B
- 2005
It is found that the mobility tensor is highly anisotropic for three of the four considered polymorphs and the practical implication of this prediction on the technology of thin-film organic transistors is discussed.
Growth and Characterization of Sexithiophene Single Crystals
- Chemistry
- 1995
Single crystals of unsubstituted sexithiophene (6T) were produced by a sublimation technique. X-ray structure shows that the molecule has a quasi-planar all-trans configuration, the torsional angles…
Molecular orientation in small-molecule organic light-emitting diodes
- Chemistry, Physics
- 2011
In research on small-molecule organic light-emitting diodes (OLEDs), the molecular orientation in vacuum-deposited amorphous films has been disregarded for around 20 years, and its effects on device…