Home▸Articles▸Chemistry & Materials

Photochemistry Fundamentals and Applications

Harnessing light to drive reactions via excited states and catalytic cycles.

mysimulator teamUpdated June 2026≈ 3 min read▶ Open the simulation

Excited States

Jablonski diagram and relaxation pathways

Intersystem crossing and triplet formation

Quenching and lifetimes

жива демонстрація · пов'язана симуляція● LIVE

Energy and Electron Transfer

Förster/Dexter mechanisms and redox windows for photocatalysis.

Examples

Example: [2+2] Cycloaddition

Select photosensitizer and wavelength.

Optimize concentration and temperature.

Scale with a flow photoreactor.

Frequently asked questions

How to choose a photocatalyst?

Match absorption and redox to substrates.

Light sources?

LEDs vs lasers; intensity and spectra.

Oxygen effects?

Triplet quenching; use inert atmospheres.

Scaling?

Flow reactors and light distribution.

Safety?

Shielding and heat management.

Side reactions?

Quenching and filters to control pathways.

Solvent choices?

Transparency and triplet compatibility.

Analysis?

Actinometry and time-resolved methods.

Green metrics?

Energy efficiency and yields.

Documentation?

Report light intensity and geometry.

Try it live

Everything above runs in your browser — open Photochemistry: Jablonski Diagram Simulator and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.

▶ Open Photochemistry: Jablonski Diagram Simulator simulation