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Kinetic Stabilization of Blue-Emissive Anthracenes: Phenylene Bridging Works Best.


ABSTRACT: In attempts at kinetically stabilizing blue-emissive anthracenes, a series of 9,10-diaryl substituted derivatives were tested for their photochemical and photooxidative persistence. A major breakthrough in light fastness comes from a new bis-meta-terphenylyl substituted anthracene which is much superior to industrially relevant 9,10-biarylated anthracenes. The key issue is the steric shielding of the anthracene core. Further, intramolecular ring closure via Yamamoto coupling furnished a doubly bridged anthracene as a "self-encapsulated" sky-blue emitter which is most resistant to photodegradation. The improved stabilization was corroborated by time-resolved irradiation experiments and rationalized by X-ray crystallography.

SUBMITTER: Nathusius M 

PROVIDER: S-EPMC9293334 | biostudies-literature |

REPOSITORIES: biostudies-literature

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