Related Experiment Video
Updated: Oct 25, 2026

Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
Published on: September 18, 2016
Tuning the Photophysical Properties of Corannulene-Based D-A-A Emitters via Steric Isolation and Conformational
Peng Fu1,2,3,4, Rui Li1,2,3,4, Yuzhu Sun1,2,3,4
1School of Pharmaceutical Science and Technology (SPST), Faculty of Medicine, Tianjin University, 92 Weijin Road, Nankai District, Tianjin300072, P. R. China.
Abstract:
We report an asymmetric donor-acceptor-acceptor (D-A-A) strategy to investigate the photophysical properties of corannulene luminogens through the integration of phenylene bridges. Comparison of bridge-free, single-bridged, and double-bridged architectures reveals distinct emission behaviors. The single-bridged framework provides steric isolation that restricts non-radiative decay while maintaining conformational flexibility. This structural modification affords corannulene emitters exhibiting large Stokes shifts and photoluminescence quantum yields exceeding 92%.
More Related Videos
06:16Monitoring the Effects of Illumination on the Structure of Conjugated Polymer Gels Using Neutron Scattering
Published on: December 21, 2017
11:26Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
Published on: September 12, 2014
Related Concept Videos
Stability of Conjugated Dienes
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
Conformations of Cyclohexane
The chair form is the most stable and derives its name from its resemblance to the “easy chair.” In the chair conformation, two carbon atoms are arranged out-of-plane — one above and one below, minimizing the torsional strain. In the chair form, the bond angle is very close to the ideal tetrahedral value,...
Conformations of Ethane and Propane
Staggered conformation is a low energy and more stable conformation with the C-H bonds on the front carbon placed at 60°dihedral angles relative to the C-H bonds on the back carbon, leading to a reduced torsional strain. In staggered ethane, the...
Structure of Conjugated Dienes
Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the double...
UV–Vis Spectroscopy of Conjugated Systems
One of the factors influencing λmax is the extent of conjugation in the...