Related Experiment Video
Updated: Jul 8, 2026
07:04
Long-range Channelrhodopsin-assisted Circuit Mapping of Inferior Colliculus Neurons with Blue and Red-shifted Channelrhodopsins
Published on: February 7, 2020
Three orthogonal chromophores operating independently within the same molecule.
Heinz Langhals1, Maximilian Rauscher, Jörg Strübe
1Department of Chemistry, LMU University of Munich, Butenandtstrasse 13, 81377 Munich, Germany. langhals@lrz.uni-muenchen.de
The Journal of Organic Chemistry
|January 11, 2008
Summary
Three perylene bisimide chromophores were orthogonally arranged on a rigid framework. Their electronic operations were independent, suggesting potential in molecular electronics.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Organic Electronics
Background:
- Perylene bisimides are versatile chromophores with tunable electronic properties.
- Orthogonal arrangement of chromophores is challenging but offers unique electronic interactions.
- C(3v)-symmetrical frameworks provide rigid scaffolds for precise molecular architecture.
Purpose of the Study:
- To synthesize a novel molecule with three orthogonally arranged perylene bisimide chromophores.
- To investigate the electronic communication and independence between the chromophores.
- To explore the potential applications of this molecular architecture in molecular electronics.
Main Methods:
- 3-fold coupling reaction to a 10-methyltribenzotriquinacene core.
- Spectroscopic characterization of the synthesized molecule.
- Computational modeling to understand electronic interactions.
Main Results:
- Successful synthesis of a C(3)-symmetrical molecule featuring three perylene bisimide units.
- Demonstration of independent electronic operation of each perylene bisimide chromophore.
- No significant electronic crosstalk observed between the chromophores.
Conclusions:
- The developed molecular architecture enables independent electronic function of multiple chromophores.
- This design holds promise for creating sophisticated molecular electronic devices.
- Further research is warranted to fully exploit its potential in organic electronics.
Related Concept Videos
02:25Molecules with Multiple Chiral Centers
Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...
01:11Channel Rhodopsins
Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
00:58¹H NMR Chemical Shift Equivalence: Enantiotopic and Diastereotopic Protons
Replacing each alpha-hydrogen in chloroethane by bromine (or a different functional group) yields a pair of enantiomers. Such protons are called prochiral or enantiotopic and are related by a mirror plane. Enantiotopic protons are chemically equivalent in an achiral environment. Because most proton NMR spectra are recorded using achiral solvents, enantiotopic hydrogens yield a single signal.
In chiral compounds such as 2-butanol, replacing the methylene hydrogens at C3 produces a pair of...
In chiral compounds such as 2-butanol, replacing the methylene hydrogens at C3 produces a pair of...
02:52Stereoisomerism
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
02:33Stereoisomerism of Cyclic Compounds
In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...
02:05Prochirality
The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...