Recent advances in ultralong room-temperature phosphorescence materials based on metal–organic halides

Abstract

Ultralong room-temperature phosphorescence (RTP) materials showing persistent luminescence have attracted much attention in the fields of information encryption, light-emitting diodes (LEDs), sensors, data storage, bioimaging, and so on. As a...

Chiral Coordination Assembly-Induced Phosphorescent Frameworks for Circularly Polarized Phosphorescence

“…The smaller Δ E st is favorable for ISC and can decrease energy loss in the process of internal conversion at excited triplet states . In addition, the compact and parallel arrangement of coupled BIP molecules in the crystal structure suggests the presence of more ISC channels; thus, the introduction of BIP molecules into the periodic framework can prompt the generation of RTP …”

“…43 In addition, the compact and parallel arrangement of coupled BIP molecules in the crystal structure suggests the presence of more ISC channels; thus, the introduction of BIP molecules into the periodic framework can prompt the generation of RTP. 22 The solid-state UV−vis absorption and CD spectra of DCF-13/LCF-13 were carried out at ambient conditions (Figure 4a). Both compounds displayed absorption peaks at 300 and 348 nm, corresponding to the n−π* of malic acid and the BIP and the π−π* transition of BIP moieties.…”

Recent progress in ion-regulated organic room-temperature phosphorescence

“…These materials are, however, discussed in recent review articles which may be referred for detailed insights. 70–73 Finally, we illustrate the main issues and challenges for future developments in ionic RTP materials.…”

Regulation and application of organic luminescence from low-dimensional organic–inorganic hybrid metal halides

“…Introducing organic cations with excellent PL activity provides a new approach to regulate the optical properties of LDMHs. 36–39 In LDMHs, organic cations are confined in a more rigid lattice compared to that in pure organic crystals, which avoids exciton quenching resulting from π–π stacking and molecular movement. Meanwhile, various intermolecular interactions in LDMHs, such as X − ⋯π interactions, C–H⋯π interactions and N–H⋯X hydrogen bonding, can facilitate physical processes including charge transfer (CT), energy transfer (ET), excited state intramolecular proton transfer (ESIPT) and spin orbit coupling (SOC), thus effectively improving the luminescent performances of organic cations.…”