Effect of π···π Interactions of Donor Rings on Persistent Room-Temperature Phosphorescence in D₄-A Conjugates and Data Security Application.

ABSTRACT: Organic room-temperature phosphorescence (RTP) materials with persistent RTP (PRTP) have attracted huge interest in inks, bioimaging, and photodynamic therapy. However, the design principle to increase the lifetime of organic molecules is underdeveloped. Herein, we show donor(D₄)-acceptor(A) molecules (TOEPh, TOCPh, TOMPh, TOF and TOPh) with similar orientation of donor rings in aggregates that cause a large number of noncovalent interactions. We observed that TOEPh, TOCPh, TOMPh and TOF showed PRTP, whereas TOPh showed only phosphorescence emission (Φ_P = ∼11%) with no PRTP property at ambient conditions. The spectroscopic and single-crystal X-ray analyses confirm the molecular assembly via J

SUBMITTER: Bhatia H 

PROVIDER: S-EPMC7876834 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature