Abstract
We successfully synthesized, for the first time, a naphthalene diimide (NDI) radical and diradical by simple chemical oxidation using lead(IV) dioxide. The formation of the (di)radical is confirmed by UV/Vis/NIR absorption, 1H NMR, and electron paramagnetic resonance (EPR) measurements. In particular, temperature-dependent EPR, SQUID (superconducting quantum interference device) measurements, and quantum calculations demonstrated that the generated NDI diradical has a singlet diradical character of y=0.69 in the ground state. Subsequent characterization of this (di)radical revealed its stabilities, large two-photon absorption cross-section, and short excited-state lifetime.
| Original language | English |
|---|---|
| Pages (from-to) | 591-595 |
| Number of pages | 5 |
| Journal | ChemPhysChem |
| Volume | 18 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2017 Mar 17 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
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Lee, S., Miao, F., Phan, H., Herng, T. S., Ding, J., Wu, J., & Kim, D. (2017). Radical and Diradical Formation in Naphthalene Diimides through Simple Chemical Oxidation. ChemPhysChem, 18(6), 591-595. https://doi.org/10.1002/cphc.201700015