Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Photochemical Electrocyclic Reactions: Stereochemistry01:26

Photochemical Electrocyclic Reactions: Stereochemistry

1.8K
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
1.8K
Cycloaddition Reactions: MO Requirements for Photochemical Activation01:12

Cycloaddition Reactions: MO Requirements for Photochemical Activation

2.0K
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.
2.0K
Deactivation Processes: Jablonski Diagram01:25

Deactivation Processes: Jablonski Diagram

554
Luminescence, the emission of light by a substance that has absorbed energy, is a process that involves the interaction of molecules with light. The energy-level diagram, or Jablonski diagram, is a graphical representation of these interactions, illustrating the various states and transitions a molecule can undergo. In a typical Jablonski diagram, the lowest horizontal line represents the ground-state energy of the molecule, which is usually a singlet state. This state represents the energies...
554
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.3K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.3K
Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

2.8K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
2.8K
UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

1.3K
In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
1.3K

You might also read

Related Articles

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

Sort by
Same author

From Brittle to Elastic: Substituent Effects on Mechanical Flexibility in Aromatic Amide Crystals.

Chemistry, an Asian journal·2026
Same author

Helically twistable cyanoacrylate crystal with simultaneous photomechanical bending.

Chemical communications (Cambridge, England)·2026
Same author

Solvo-Mechanical Flexing in Cryogenically 2D Flexible Single-Crystal-to-Single-Crystal Polymorphic Switch.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Reversible twisting-induced crystalline-polycrystalline transformation in cyanoacrylate crystals.

Chemical communications (Cambridge, England)·2025
Same author

Water-driven modulation of multiresponsive properties in acylhydrazone-based crystals.

Chemical communications (Cambridge, England)·2025
Same author

Regulating photoreactivity in a polymorphic bi-component solid through large synthons.

Communications chemistry·2025
Same journal

Mechanical Stability of Flexible Perovskite Solar Cells: Research Progress, Characterization, Challenges, and Future Perspectives.

Chemistry, an Asian journal·2026
Same journal

Photophysical Properties of Coumarin 343 and Structural Changes in Reline-Pluronic Systems With Varying Block Composition.

Chemistry, an Asian journal·2026
Same journal

Silicone-Based Polyurethane for Visual Damage Sensing: The Critical Role of Chemical Bonding in Mechanochromic Soft Materials.

Chemistry, an Asian journal·2026
Same journal

Functionalized Pyridine-Based Iron(II) Complexes: Synthesis, Structural Characteristics and Catalytic Activity in Alcohol Oxidation.

Chemistry, an Asian journal·2026
Same journal

Cobalt-Intercalated Natural Montmorillonite Clay as a Multifunctional Platform for Alkaline Water Splitting and Supercapacitive Energy Storage.

Chemistry, an Asian journal·2026
Same journal

Oil Spill Remediation: Recent Developments of Phase Selective Organogelators (PSOGs).

Chemistry, an Asian journal·2026
See all related articles

Related Experiment Video

Updated: May 25, 2025

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

8.7K

Photo-Induced Cracking in a Bi-Component Molecular Solid: Capturing Structural Intermediates.

Mollah Rohan Ahsan1, Manish Kumar Mishra2,3, Arijit Mukherjee1

  • 1Department of Chemistry, BITS Pilani Hyderabad Campus Shamirpet, Jawhar Nagar, PIN, 500078.

Chemistry, an Asian Journal
|February 26, 2025
PubMed
Summary
This summary is machine-generated.

Researchers designed a photo-responsive solid using large synthons. This approach enables difficult photodimerization and reveals crystal cracking and intermediate reorientation during the process.

Keywords:
[2+2] photodimerizationcrystal engineering, bi-component solidphotoinduced crackingsingle-crystal-to-single crystal transformation

More Related Videos

On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature
07:42

On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature

Published on: March 11, 2022

1.8K
Patterning via Optical Saturable Transitions - Fabrication and Characterization
08:19

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Published on: December 11, 2014

6.8K

Related Experiment Videos

Last Updated: May 25, 2025

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

8.7K
On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature
07:42

On-Chip Crystallization and Large-Scale Serial Diffraction at Room Temperature

Published on: March 11, 2022

1.8K
Patterning via Optical Saturable Transitions - Fabrication and Characterization
08:19

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Published on: December 11, 2014

6.8K

Area of Science:

  • Solid-state chemistry
  • Photochemistry
  • Crystal engineering

Background:

  • Photodimerization in solids is crucial for materials science.
  • Designing systems that undergo efficient photodimerization can be challenging.
  • Understanding intermediate structures is key to controlling solid-state reactions.

Purpose of the Study:

  • To design a photo-responsive bi-component solid using large synthons.
  • To develop a template-based approach for challenging photodimerization systems.
  • To investigate the mechanism of photo-induced cracking and structural reorientation.

Main Methods:

  • Utilized robust large synthons for solid design.
  • Employed a template-based strategy for photo-dimerization.
  • Analyzed crystal structures and intermediates using crystallographic methods.

Main Results:

  • Successfully designed a photo-responsive bi-component solid.
  • Achieved photo-induced cracking upon photodimerization.
  • Captured and analyzed structural intermediates, revealing reorientation mechanisms.

Conclusions:

  • The template-based approach facilitates difficult photodimerizations.
  • The designed solid exhibits unique photo-induced cracking behavior.
  • Crystal structural integrity is maintained through photodimer reorientation.