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

Photochemical Electrocyclic Reactions: Stereochemistry

Photochemical Electrocyclic Reactions: Stereochemistry

The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation

Cycloaddition Reactions: MO Requirements for Photochemical Activation

Cycloaddition Reactions: MO Requirements for Photochemical Activation

Some cycloaddition reactions are activated by heat, while others are initiated by light. For example, a [2 + 2] cycloaddition between two ethylene molecules occurs only in the presence of light. It is photochemically allowed but thermally forbidden.

You might also read

Related Articles

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

Sort by

Same author

Light-responsive aggregation of vesicles using host-guest interaction of β-cyclodextrin and diazocine.

Chemical communications (Cambridge, England)·2026

Same author

Remarkable Effect of Odd-Even Spacer in Supramolecular Polymerization and Piezoresponse of Amide-Functionalized Naphthalene Diimides.

Angewandte Chemie (International ed. in English)·2026

Same author

Supramolecular Assembly of a Heavy-Atom-Free Highly Efficient Self-Deliverable Photosensitizer for Activable Photodynamic Therapy.

Angewandte Chemie (International ed. in English)·2026

Same author

Mitochondria targeting by a nonionic and emissive push-pull type chromophore or its polymer conjugate.

Chemical communications (Cambridge, England)·2026

Same author

A Tale of Two Folds: Multiorthogonal Interactions Driven Hierarchical Assembly of a Polymer with an Appended Donor-Acceptor Dyad and Prominent Piezoelectricity.

ACS macro letters·2026

Same author

Supramolecular Assembly of Stimuli-Responsive Protein-Chromophore Conjugate and Triggered Protein Delivery.

Bioconjugate chemistry·2025

Search research articles

Related Experiment Video

Updated: Nov 23, 2025

Synthesis and Characterization of Supramolecular Colloids

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Phototriggered Supramolecular Assembly.

Anurag Mukherjee¹, Suhrit Ghosh¹

¹School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata, India 700032.

|December 30, 2020

Summary

Researchers are developing light-triggered supramolecular assembly for precise control over material properties. This method offers a reagent-free approach to synthesizing complex structures with enhanced accuracy and tailored macroscopic characteristics.

More Related Videos

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

Facile Preparation and Photoactivation of Prodrug-Dye Nanoassemblies

Facile Preparation and Photoactivation of Prodrug-Dye Nanoassemblies

Published on: February 17, 2023

Related Experiment Videos

Last Updated: Nov 23, 2025

Synthesis and Characterization of Supramolecular Colloids

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

Facile Preparation and Photoactivation of Prodrug-Dye Nanoassemblies

Facile Preparation and Photoactivation of Prodrug-Dye Nanoassemblies

Published on: February 17, 2023

Area of Science:

Supramolecular Chemistry
Materials Science
Photochemistry

Background:

Traditional supramolecular structures often lack macroscopic accuracy due to uncontrolled self-assembly.
Understanding noncovalent interactions is crucial, but controlling assembly dimensions and properties is a recent focus.
External stimuli offer pathways to achieve structural precision in supramolecular assembly.

Purpose of the Study:

To review recent advancements in light-triggered supramolecular assembly.
To highlight methods for achieving controlled synthesis of supramolecular assemblies using light.
To showcase the potential of photoactivation for creating precise macroscopic properties.

Main Methods:

Review of literature on phototriggered supramolecular assembly.
Examples utilizing removal of photolabile protecting groups.
Instances involving photoisomerization and photoactivation of dormant building blocks.

Main Results:

Light-triggered assembly provides a reagent-free method for precise supramolecular synthesis.
Control over light energy, irradiation time, and spatial parameters enables tailored assembly.
Various photoactivation strategies lead to controlled dimension, dispersity, and macroscopic properties.

Conclusions:

Phototriggered supramolecular assembly offers significant advantages for controlled material synthesis.
This approach overcomes limitations of spontaneous self-assembly, enabling higher accuracy.
Future research can leverage light stimuli for designing advanced functional materials.