Here, an innovative approach to achieve near-infrared (NIR) long-lived circularly polarized luminescence (CPL) in amorphous organic polymer materials was achieved. By co-doping bi-naphthalene derivative R/S-BPN as energy donors with porphyrin derivative TPPOH as energy acceptor into PVA polymer matrix, the NIR long-lifetime fluorescence was successfully realized through the principles of triplet-to-singlet Förster resonance energy transfer (TS-FRET). Photophysical characterizations revealed distinct room temperature phosphorescence (RTP) emission peaks and phosphorescence lifetimes for different donor-acceptor ratios. The TS-FRET process facilitated extended lifetime and red-shifted emission of the acceptor TPPOH. Moreover, employing the chiral donor R/S-BPN as chiral seeds to establish chiral environments facilitated the achievement of near-infrared CPL. These findings offer a novel and practical strategy for achieving long-wavelength and long-lifetime CPL fluorescence without complex molecular engineering, presenting potential applications in various technological fields.

Organic materials with room-temperature phosphorescence (RTP) emission have attracted extensive attention owing to their extraordinary properties, including long lifetime, large Stokes shift, and stimuli-responsiveness, and show bright prospects in broad fields. Numerous design strategies, such as creating a rigid environment through crystallization and supramolecular assembly, can be employed to improve the luminescent characteristics of RTP materials by restricting nonradiative transition, enhancing intersystem crossing, and so forth. This review summarizes recent progress with organic room-temperature phosphorescent materials from the perspective of practical applications, including luminescence and display, environmental detection, and bioimaging, and the challenges and prospects will be discussed at the end, which should assist with future research on the application of RTP materials.