Tunable multicolor afterglow including white light emission from poly(acrylic acid)-based room temperature phosphorescence materials via phosphorescence FRET

Translating efficient fluorescence into persistent room-temperature phosphorescence by doping bipolar fluorophores into polar polymer matrix

“…16 Recently, Li and coworkers fabricated phosphorescence films by doping planar phthalimide molecules with ICT characteristics into polyacrylic acid (PAA). 17 George et al utilized triplet charge-transfer states in organic donor–acceptor co-crystals or ionic salts to achieve phosphorescence emission. 18,19 Based on the above research progress, we envisioned that doping bipolar organic fluorophores into highly polar matrices would be an alternative in designing and constructing phosphorescent materials (Scheme 1).…”

“…To the best of one's knowledge, excited states with charge transfer (CT) characteristics play an important role in the ambient triplet harvesting of organic chromophores, 13,14 and conjugated molecules with intramolecular charge transfer (ICT) are often used as guests to achieve phosphorescence emission. [15][16][17] Chi and coworkers successfully constructed phosphorescent materials with an ultralong lifetime of up to 2.32 s by doping indoylcarbazole molecule with ICT characteristics into polyvinyl alcohol (PVA). However, there is no phosphorescence emission in the crystal state of indoylcarbazole molecules at room temperature.…”

Photochemically and Thermally Programmed Optical Multi‐States from a Single Diacetylene‐Functionalized Cyanostilbene Luminogen

“…[13,[18][19][20] In particular, mixing of different dyes occasionally causes unexpected problems such as phase separation, undesirable photophysical processes, and undefined assembly. [20][21][22] Synthesis of desired multi-tunable organic dyes is an ideal strategy to address these issues, which is still considered a big challenge. [17,[24][25][26][27] Here, we newly designed a diacetylene-functionalized cyanostilbene luminogen (DACSM) in Scheme 1 for three reasons.…”

“…In most cases, multi‐component systems and multi‐layered structures were adopted, leading to much more complicated systems with a lot of processes. [ 13 , 18 , 19 , 20 ] In particular, mixing of different dyes occasionally causes unexpected problems such as phase separation, undesirable photophysical processes, and undefined assembly. [ 20 , 21 , 22 ] Synthesis of desired multi‐tunable organic dyes is an ideal strategy to address these issues, which is still considered a big challenge.…”

Urea-formaldehyde resin room temperature phosphorescent material with ultra-long afterglow and adjustable phosphorescence performance

“…The RTP materials prepared by matrix doping strategy have the advantages of processing properties and multifunctionality. Indeed, a number of RTP materials achieved excellent RTP performance by doping guest molecules into polymers rich in heteroatomic functional groups, such as polymethyl methacrylate (PMMA) 19,20 , polyvinyl alcohol (PVA) 21,22 , polyacrylonitrile (PAN) 23,24 , hyaluronic acid (HA) 25,26 and polyacrylic acid (PAA) 27,28 .…”