Related Experiment Video
Updated: Apr 28, 2026
11:44
Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
Published on: October 18, 2018
27.4K
An extended phenacene-type molecule, [8]phenacene: synthesis and transistor application.
Hideki Okamoto1, Ritsuko Eguchi2, Shino Hamao2
1Department of Chemistry, Okayama University, Okayama 700-8530, Japan.
Scientific Reports
|June 18, 2014
Summary
A novel [8]phenacene molecule shows promise for organic electronics. This extended π-conjugated system demonstrates excellent charge carrier mobility in field-effect transistors (FETs), particularly in electric-double-layer FETs.
Area of Science:
- Organic electronics
- Materials science
- Semiconductor physics
Background:
- Phenacene molecules are of interest for their electronic properties.
- Extended π-conjugated systems are crucial for charge transport in organic semiconductors.
Purpose of the Study:
- To synthesize and characterize a new phenacene-type molecule, [8]phenacene.
- To evaluate the performance of [8]phenacene in organic field-effect transistors (OFETs).
Main Methods:
- Synthesis of [8]phenacene.
- Structural verification using elemental analysis, solid-state NMR, and X-ray diffraction (XRD).
- Fabrication and characterization of [8]phenacene thin-film transistors (TFTs) and electric-double-layer FETs (EDL-FETs).
Main Results:
- [8]phenacene was successfully synthesized and characterized.
- Thin-film FETs exhibited p-channel characteristics with a highest mobility (μ) of 1.74 cm²/Vs.
- EDL-FETs achieved a highest mobility (μ) of 16.4 cm²/Vs, a record for phenacene-based EDL-FETs.
Conclusions:
- [8]phenacene demonstrates excellent charge carrier mobility, making it a promising material for transistor applications.
- The molecule's extended π-conjugation contributes to its high performance in OFETs.
- Further research into phenacene derivatives could lead to advanced organic electronic devices.
More Related Videos
Related Concept Videos
01:27Benzene to Phenol via Cumene: Hock Process
3.6K
The synthesis of phenol from benzene via cumene and cumene hydroperoxide is called the Hock process. First, a Friedel–Crafts alkylation reaction of benzene with propene gives cumene. Then cumene forms cumene hydroperoxide via a radical chain reaction. In the chain initiation step, the benzylic hydrogen is abstracted to give a benzylic radical. In the chain propagation step, the benzylic radical reacts with an oxygen diradical to form a cumene hydroperoxide radical. The cumene...
3.6K
01:26Thermal and Photochemical Electrocyclic Reactions: Overview
2.1K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.1K
01:10Hydrolysis of Chlorobenzene to Phenol: Dow Process
3.6K
Simple aryl halides do not react with nucleophiles under normal conditions. However, the reaction can proceed under drastic conditions involving high temperatures and high pressure to give the substituted products. For example, chlorobenzene is converted to phenol using aqueous sodium hydroxide at 350 °C under high pressure by the Dow process. The reaction follows an elimination-addition mechanism involving a benzyne intermediate. Here, the chloride ion is...
3.6K
01:14Photoluminescence: Applications
1.3K
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
1.3K
02:34Preparation of Alkynes: Dehydrohalogenation
17.0K
Introduction
Alkynes can be prepared by dehydrohalogenation of vicinal or geminal dihalides in the presence of a strong base like sodium amide in liquid ammonia. The reaction proceeds with the loss of two equivalents of hydrogen halide (HX) via two successive E2 elimination reactions.
Alkynes can be prepared by dehydrohalogenation of vicinal or geminal dihalides in the presence of a strong base like sodium amide in liquid ammonia. The reaction proceeds with the loss of two equivalents of hydrogen halide (HX) via two successive E2 elimination reactions.
17.0K
01:22Bipolar Junction Transistor
1.8K
Bipolar Junction Transistors (BJTs) are essential elements in electronic circuits, playing a crucial role in the functionality of amplifiers, memories, and microprocessors. These transistors can be designed as NPN or PNP based on their doping patterns. They consist of three layers: the emitter, base, and collector. The configuration of these layers and their respective doping levels—with N-type or P-type impurities—define the transistor's type and its operational...
1.8K