Related Experiment Video
Updated: Jun 19, 2026
06:21
A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles
Published on: March 13, 2017
Using circumacenes to improve organic electronics and molecular electronics: design clues
Angel J Pérez-Jiménez1, Juan C Sancho-García
1Departamento de Química-Física, Universidad de Alicante, E-03080, Alicante, Spain. aj.perez@ua.es
Nanotechnology
|October 28, 2009
Summary
Circumacenes can enhance pi-conjugated materials for organic electronics and molecular nanobridges. Molecular length or HOMO-LUMO gap are key design parameters for performance in both applications.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Organic Electronics
Background:
- Pi-conjugated materials are crucial for organic electronic devices and molecular nanobridges.
- Circumacenes offer potential for improving charge transport in these systems.
Purpose of the Study:
- To theoretically model the use of circumacenes for enhancing transport properties.
- To identify key design parameters for circumacenes in organic electronics and molecular nanobridges.
Main Methods:
- Theoretical modeling was employed to investigate circumacene properties.
- Analysis focused on relating molecular length and HOMO-LUMO gap to transport regimes.
Main Results:
- Molecular length and HOMO-LUMO gap serve as approximate design parameters for circumacenes.
- Circumanthracene shows promise for improving performance in both organic electronics and molecular nanobridges.
Conclusions:
- A simplified relationship exists between molecular dimensions/electronic properties and transport in circumacenes.
- Detailed molecule-contact geometry is essential for accurate predictions in molecular nanobridges, preventing extrapolation.
Related Concept Videos
00:53Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
01:17Pericyclic Reactions: Introduction
Pericyclic reactions are organic reactions that occur via a concerted mechanism without generating any intermediates. The reactions proceed through the movement of electrons in a closed loop to form a cyclic transition state, where rearrangement of the σ and π bonds yields specific products.
Pericyclic reactions can be classified into three categories: electrocyclic reactions, cycloaddition reactions, and sigmatropic rearrangements. Electrocyclic reactions and sigmatropic rearrangements are...
Pericyclic reactions can be classified into three categories: electrocyclic reactions, cycloaddition reactions, and sigmatropic rearrangements. Electrocyclic reactions and sigmatropic rearrangements are...
01:16Cycloaddition Reactions: Overview
Cycloadditions are one of the most valuable and effective synthesis routes to form cyclic compounds. These are concerted pericyclic reactions between two unsaturated compounds resulting in a cyclic product with two new σ bonds formed at the expense of π bonds. The [4 + 2] cycloaddition, known as the Diels–Alder reaction, is the most common. The other example is a [2 + 2] cycloaddition.
01:26Thermal and Photochemical Electrocyclic Reactions: Overview
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.