Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Aromatic Hydrocarbon Cations: Structural Overview

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...

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...

Properties of Organometallic Compounds

Properties of Organometallic Compounds

Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Unforgeable Red: Design and Application of SO-Annulated Perylene Diimides for Anti-Counterfeiting.

Small (Weinheim an der Bergstrasse, Germany)·2026

Same author

1,4-Digermacyclopenta-1,3-diene: Continuous Cyclic σ*-π Delocalization Enables Aromatic Stabilization in a Heavy-Element 4π System.

Angewandte Chemie (International ed. in English)·2026

Same author

Awake mapping-guided salvage resection for local recurrence or radiation necrosis after stereotactic radiosurgery and radiotherapy for brain metastases.

Journal of neuro-oncology·2026

Same author

Temporal recovery in motor evoked potential during evacuation of cervical spontaneous epidural hematoma: illustrative case.

Journal of neurosurgery. Case lessons·2026

Same author

Spin State in Au Porphyrins Modulated by Charge Transfer on Au(111).

Journal of the American Chemical Society·2026

Same author

Observation of Photophysical Processes of a Heptacene Derivative: Monomeric Behavior in Homogeneous Solution and Singlet Fission in Thin Film.

Journal of the American Chemical Society·2026

Search research articles

Related Experiment Video

Updated: Jun 14, 2025

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

Published on: April 28, 2023

Accessing Single-Molecule Properties of Heptacene Using a Metal-Organic Framework.

Takumi Miura¹, Takashi Kitao², Keigo E Yamada¹

¹Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.

Chemistry (Weinheim an Der Bergstrasse, Germany)

|June 13, 2025

Summary

Researchers developed a method to stabilize and isolate heptacene, a type of polycyclic aromatic hydrocarbon, within a metal-organic framework. This breakthrough allows for the first observation of heptacene

Keywords:

acenes host − guest systems metal‐organic frameworks microporous materials optoelectronic properties

More Related Videos

Author Spotlight: Characterizing Porous Materials for Aiding the Development of Robust Metal-Organic Frameworks with Adsorption Behavior

Author Spotlight: Characterizing Porous Materials for Aiding the Development of Robust Metal-Organic Frameworks with Adsorption Behavior

Published on: March 8, 2024

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

Related Experiment Videos

Last Updated: Jun 14, 2025

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

Published on: April 28, 2023

Author Spotlight: Characterizing Porous Materials for Aiding the Development of Robust Metal-Organic Frameworks with Adsorption Behavior

Author Spotlight: Characterizing Porous Materials for Aiding the Development of Robust Metal-Organic Frameworks with Adsorption Behavior

Published on: March 8, 2024

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

Area of Science:

Organic Chemistry
Materials Science
Physical Chemistry

Background:

Acenes are model systems for one-dimensional π-conjugated structures.
Higher acenes are difficult to study due to insolubility and instability.
The electronic structure of higher acenes remains a topic of debate.

Purpose of the Study:

To develop a method for isolating and studying higher acenes.
To investigate the intrinsic properties of heptacene.
To elucidate the electronic ground state of pristine heptacene.

Main Methods:

Encapsulation of heptacene within a metal-organic framework via in situ photochemical conversion.
Utilizing spatial confinement within the framework to stabilize heptacene.
Employing various analytical techniques and theoretical studies for characterization.

Main Results:

The photochemical conversion of the precursor is accelerated within the framework.
Heptacene is stabilized, suppressing undesirable side reactions.
Bulk production of isolated heptacene enabled exploration of its single-molecule properties.
The first observation of heptacene fluorescence was achieved.
The electronic ground state of pristine heptacene was revealed.

Conclusions:

Metal-organic framework encapsulation is an effective strategy for stabilizing and studying unstable higher acenes.
This method provides unprecedented access to the intrinsic properties of heptacene.
The study resolves long-standing questions regarding the electronic structure of higher acenes.