Title: intramolecular charge transfer
Long Title: IUPAC Gold Book - intramolecular charge transfer
DOI: 10.1351/goldbook.IT07401
Status: current

Definition
Process that changes the overall charge distribution in a molecule.

Note
For intramolecular charge transfer in the excited state, several models are discussed in the literature based on the molecular structure of the final state reached upon photo-induced ICT: planar intramolecular charge transfer (PICT) or twisted intramolecular charge transfer (TICT). For example, an ICT has been proposed to be responsible for the strongly Stokes-shifted additional fluorescence band in fluorescent molecules with two fluorescence bands (dual fluorescent molecules).

Related Terms
- Stokes-shifted: https://dev.goldbook.iupac.org/terms/view/S06031
- dual fluorescent: https://dev.goldbook.iupac.org/terms/view/DT07365
- excited state: https://dev.goldbook.iupac.org/terms/view/E02257
- fluorescence: https://dev.goldbook.iupac.org/terms/view/F02453
- intramolecular: https://dev.goldbook.iupac.org/terms/view/I03130
- planar intramolecular charge transfer: https://dev.goldbook.iupac.org/terms/view/PT07418
- twisted intramolecular charge transfer: https://dev.goldbook.iupac.org/terms/view/T06537

Source
- PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 357 (https://doi.org/10.1351/pac200779030293)

Other Outputs
- html: https://dev.goldbook.iupac.org/terms/view/IT07401/html
- json: https://dev.goldbook.iupac.org/terms/view/IT07401/json
- xml: https://dev.goldbook.iupac.org/terms/view/IT07401/xml

Citation: Citation: 'intramolecular charge transfer' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.IT07401
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Accessed: 2025-12-13T22:53:05+00:00