Excitation-Dependent Quadruple-Level Emission from an Isolated Molecule for Dynamic Information Encryption.

ABSTRACT: Stimuli-responsive single-molecule multi-emission materials have long attracted considerable attention due to their great potential in non-phase-separated smart luminescence. Here, a new strategy is demonstrated for manipulating electron transfer based on donor-acceptor decoupling to regulate energy levels, aiming to achieve excitation-dependent (Ex-De) single-molecule emission with switchable multiple fluorescence and phosphorescence. The synthesized 10-phenyl-10H,13'H-spiro[acridine 9,6'-pentacen]-13'-one (ACRSP) exhibits anti-Kasha quadruple-level emission and opposite Ex-De afterglow in different environments. The high-energy emission bands of multi-fluorescence in solution respond to excitation, whereas in poly(methyl methacrylate) (PMMA), phosphorescence-fluorescence multi-emission c

SUBMITTER: Shi Y 

PROVIDER: S-EPMC12520544 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature