Cyclization-enhanced photoactivatable reversible room-temperature phosphorescence for efficient real-time light printing.

ABSTRACT: The construction of polymer-based photoactivated room-temperature phosphorescence systems remains a prominent research focus, yet the development of ultrafast activated systems under ambient conditions continues to pose a challenge. In this study, cyclized phenothiazine derivatives bearing diverse substituents are synthesized and incorporated into an amorphous polyvinyl alcohol (PVA) matrix, resulting in significantly enhanced dynamic photoactivation characteristics compared with those of their pristine monomeric counterparts. Under ambient conditions and 2 s irradiation, the lifetime and quantum yield of C[4]PTZ-OH@PVA increase by factors of 1.96 (from 11.8 to 23.1 ms) and 3.43 (from 8.62% to 29.53%), respectively, relative to those of PTZ-OH@PVA. Theoretical calculations and experimental

SUBMITTER: Sun Y 

PROVIDER: S-EPMC12409663 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature