Jablonski Diagram Calculator
Interactive Jablonski Diagram Generator
Enter wavelengths or energies to visualize absorption, fluorescence, phosphorescence, and energy transitions in real time.
Photophysical Parameters
Stokes Shift = — nm (— cm⁻¹)
S₁ Energy = — eV
T₁ Energy = — eV
ΔE(S₁-T₁) = — eV
The Jablonski Diagram Calculator is an interactive, scientifically accurate tool that generates **real-time Jablonski diagrams** with energy levels, transitions, and photophysical parameters. Based on peer-reviewed spectroscopy and quantum chemistry, it calculates **Stokes shift**, **S₁/T₁ energies**, **ΔE(S₁-T₁)**, and visualizes **absorption, fluorescence, phosphorescence, ISC, and vibrational relaxation**. Ideal for teaching photochemistry, designing fluorescent probes, or analyzing pesticide photostability. Explore luminescent solutions in agriculture at Agri Care Hub.
What is a Jablonski Diagram?
The **Jablonski diagram** is a visual representation of molecular electronic and vibrational energy levels and the transitions between them upon light absorption. Named after Aleksander Jablonski, it includes:
- S₀: Ground singlet state
- S₁, S₂: Excited singlet states
- T₁, T₂: Triplet states
- Arrows: Absorption, fluorescence, phosphorescence, ISC, IC, VR
Learn more on Jablonski Diagram Wikipedia.
Scientific Foundation: Energy Calculations
Photon energy:
Stokes shift:
in cm⁻¹: \Delta\tilde{\nu} = 10^7 (\frac{1}{\lambda_{abs}} - \frac{1}{\lambda_{fl}})
Importance of Jablonski Diagrams
Essential for understanding:
- Fluorescence vs Phosphorescence
- Quantum Yield & Lifetime
- Photodegradation of Pesticides
- Oxygen Sensing
- Photosensitizers in PDT
In agriculture, this tool helps design photostable or photoactive agrochemicals — a focus at Agri Care Hub.
User Guidelines
Steps:
- Enter absorption wavelength (nm)
- Enter fluorescence and phosphorescence wavelengths
- Adjust ISC yield (0–1)
- Click “Generate Jablonski Diagram”
- View interactive SVG and calculated parameters
Longer wavelength = lower energy
When and Why to Use
Use when you need to:
- Teach photochemistry
- Predict pesticide photolysis
- Design fluorescent soil sensors
- Interpret emission spectra
- Optimize OLED emitters
Purpose of the Calculator
To make photophysics visual and interactive. It bridges theory and experiment, enabling real-time exploration of energy gaps and transition probabilities.
Example: Fluorescein
- λ_abs = 490 nm → E = 2.53 eV
- λ_fl = 520 nm → Stokes = 30 nm
- Φ_f ≈ 0.95, τ_f ≈ 4 ns
Applications in Agriculture
Jablonski analysis enables:
- Photostable herbicide design
- Fluorescent nutrient trackers
- UV protection in crop sprays
- Photosynthetic efficiency probes
Learn more at Agri Care Hub.
Scientific Validation
Based on:
- Lakowicz “Principles of Fluorescence Spectroscopy”
- Turro “Modern Molecular Photochemistry”
- Jablonski (1933) original work
- Jablonski Diagram Wikipedia
Benefits
- Interactive SVG diagram
- Real-time energy calculation
- Mobile-friendly
- No login
- SEO-optimized
Conclusion
The Jablonski Diagram Calculator transforms abstract photophysics into visual insight. From classroom teaching to agrochemical R&D, it delivers clarity and precision. Start visualizing molecular light interactions today with Agri Care Hub.