Photochemistry Lab

Photochemistry Simulator – Light-Driven Reactions Online

Photochemistry studies how light absorption promotes molecules to excited electronic states, enabling reactions thermally forbidden in the dark. This simulation covers the Jablonski diagram, fluorescence and phosphorescence, photoisomerization, and the primary photochemical steps of photosynthesis, connecting photon energy (E = hν) to bond breaking and forming.

What you can do in this simulation

• Visualize the Jablonski diagram: absorption, internal conversion, fluorescence, and phosphorescence pathways
• Adjust incident light wavelength and observe which electronic transitions are allowed for a molecule
• Trigger cis-trans photoisomerization of a model alkene and compare ground- vs. excited-state PES
• Trace primary photochemical events of the light-dependent reactions in photosynthesis
• Measure quantum yield by comparing photons absorbed to product molecules formed

Concepts covered

Jablonski diagram · excited state · fluorescence and phosphorescence · quantum yield · photoisomerization · photon energy E = hν

Related simulations

• Acid-Base Chemistry – Free Interactive Online Lab
• Biochemistry Simulator – Enzymes & Molecules Online
• Brownian Motion Simulator: See the Random Walk
• Buffer Solution Simulator – pH Resistance Online Lab
• Chemical Equilibrium – Le Chatelier's Principle Online
• Chemical Kinetics – Rate Laws & Arrhenius Equation Online

Browse all Chemistry simulations →

Free to use in your browser — no signup required. Found a bug or have an idea to make it better? Tell us.