Related Experiment Video
Updated: Jun 8, 2025

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Faster Excited-State Intramolecular Electron Transfer from Perylenediimide Dianion Compared to Its Radical Anion
Chao Lu1, Kazuma Honda1, Mamoru Fujitsuka1
1SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan.
Abstract:
The properties of the excited perylenediimide dianion (PDI2-∗) and its intramolecular electron transfer (ET) behavior were examined using femtosecond laser flash photolysis on PDI2- and PDI2--acceptor (A) dyads. Upon laser excitation, the dianion of PDI first generated a singlet (S1) state, followed by a triplet (T1) state. In all of the dyads, rate constants of the intramolecular ET from PDI2-∗ (S1) varied with the driving forces. Comparison of the PDI2-∗-A and PDI•-∗-A dyad systems revealed higher rate constants for the ET from PDI2-∗ than from PDI•-∗, which can be attributed to the difference in electronic coupling for the ET. These findings elucidate the previously unexplored photoinduced ET characteristics of PDI2-, thereby advancing the groundwork for photochemical studies of excited multi-ions and their applications in related materials.
More Related Videos
08:22Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
06:49Atom Transfer Radical Polymerization of Functionalized Vinyl Monomers Using Perylene as a Visible Light Photocatalyst
Published on: April 22, 2016
Related Concept Videos
Radical Reactivity: Intramolecular vs Intermolecular
Radical Reactivity: Overview
Radical Formation: Addition
Similar to charge conservation in chemical reactions, spin conservation is implicit for radical reactions. Accordingly, the product formed must possess an...
Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals
Radical Reactivity: Steric Effects
Along with electronic...
Radical Reactivity: Electrophilic Radicals