In:
Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 11, No. 28 ( 2023), p. 9640-9648
Abstract:
In recent years, organic radicals have gained considerable attention because they open opportunities for new-generation electronics which may integrate spin, magnetic and quantum mechanical effects. However, air stable organic radicals in the solid state, which can be practically applied, remain a great challenge in chemistry. Herein, we choose N -heptanamido triarylamine as a fragment which can produce radicals upon light irradiation, phenothiazine as a donor (D) unit, and 3-ethylrhodanine or 1,3-indanedione as an acceptor (A) unit, and then connect them in a conjugated manner. The results of 1 H-NMR spectroscopy, DFT calculations, EPR measurements, AFM and photophysical characterization revealed that the introduction of the D unit could significantly increase spin delocalization and then the stability of the light-triggered TPA radicals in chloroform solution. These radicals can be maintained in the solid state. More importantly, these become stable radicals with a half-life of approximately one month under ambient conditions due to the stronger intermolecular aggregation resulting from the introduction of the A unit. This work provides a new approach for obtaining air-stable radicals in the solid-state from organic radicals in solution.
Type of Medium:
Online Resource
ISSN:
2050-7526
,
2050-7534
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
2702245-6
