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Related Concept Videos

Aromatic Hydrocarbon Cations: Structural Overview01:18

Aromatic Hydrocarbon Cations: Structural Overview

Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group with both...
Radicals: Electronic Structure and Geometry01:07

Radicals: Electronic Structure and Geometry

This lesson delves into the geometry of a radical, which is influenced by the electronic structure of the molecule. The principle is similar to that of a lone pair, where the unpaired electron influences the geometry at the radical center.
Accordingly, the structure of a trivalent radical lies between the geometries of carbocations and carbanions. An sp2-hybridized carbocation is trigonal planar, while an sp3-hybridized carbanion is trigonal pyramidal. Here, the difference in geometry is...
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

Tetrahedral Complexes
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π Molecular Orbitals of 1,3-Butadiene01:24

π Molecular Orbitals of 1,3-Butadiene

Conjugated dienes have lower heats of hydrogenation than cumulated and isolated dienes, making them more stable. The enhanced stabilization of conjugated systems can be understood from their π molecular orbitals.
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Hybridization of Atomic Orbitals II

sp3d and sp3d 2 Hybridization

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Updated: Jun 14, 2026

Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
09:35

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Published on: September 18, 2016

Tripodal exTTF-CTV hosts for fullerenes.

Elisa Huerta1, Helena Isla, Emilio M Pérez

  • 1Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans, 16, 43007 Tarragona, Spain.

Journal of the American Chemical Society
|March 31, 2010
PubMed
Summary

A novel fullerene receptor, exTTF-CTV, demonstrates high stability and forms complexes with C60 and C70 fullerenes. Intracomplex photoinduced electron transfer processes were observed in solution.

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Preparation and Characterization of C60/Graphene Hybrid Nanostructures
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Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Photochemistry

Background:

  • Fullerenes are versatile carbon allotropes with unique electronic properties.
  • Developing selective receptors for fullerenes is crucial for their application in various fields.
  • Supramolecular host-guest chemistry provides a platform for designing such receptors.

Purpose of the Study:

  • To synthesize and characterize a novel receptor for fullerenes based on a CTV scaffold.
  • To investigate the binding properties of the receptor with C60 and C70 fullerenes.
  • To explore the photophysical processes occurring within the fullerene-receptor complex.

Main Methods:

  • Synthesis of the exTTF-CTV receptor.
  • Binding studies using techniques to determine complex stability constants (log K(a)).
  • Light-induced Electron Spin Resonance (ESR) spectroscopy to probe photoinduced electron transfer (PET).

Main Results:

  • The exTTF-CTV host forms highly stable complexes with C60 (log K(a) = 5.3 ± 0.2) and C70 (log K(a) = 6.3 ± 0.6).
  • Light-induced ESR spectra confirmed the occurrence of intracomplex photoinduced electron transfer (PET) processes.
  • The receptor exhibits selective binding towards C70 over C60.

Conclusions:

  • The exTTF-CTV receptor is an effective host for fullerenes, forming stable complexes.
  • Intracomplex PET processes can be initiated upon light absorption within these complexes.
  • This work opens avenues for fullerene applications in areas like molecular electronics and sensing.