Clustering and halogen effects enabled red/near-infrared room temperature phosphorescence from aliphatic cyclic imides.

ABSTRACT: Pure organic room temperature phosphorescence (RTP) materials become increasingly important in advanced optoelectronic and bioelectronic applications. Current phosphors based on small aromatic molecules show emission characteristics generally limited to short wavelengths. It remains an enormous challenge to achieve red and near-infrared (NIR) RTP, particularly for those from nonaromatics. Here we demonstrate that succinimide derived cyclic imides can emit RTP in the red (665, 690 nm) and NIR (745 nm) spectral range with high efficiencies of up to 9.2%. Despite their rather limited molecular conjugations, their unique emission stems from the presence of the imide unit and heavy atoms, effective molecular clustering, and the electron delocalization of halogens. We further demonstrate that th

SUBMITTER: Zhu T 

PROVIDER: S-EPMC9098632 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature