Reversible, photoresponsive, dynamic wide-range emission color from polymer-matrixed naphthalene diimide single-luminogen

Rational molecular and doping strategies to obtain organic polymers with ultralong RTP

“…Among them, organic-doped RTP polymers are attracting much attention due to their economy, good processability, biocompatibility, and diverse mechanical properties. [1][2][3][4][5] Polymers rich in hydrogen bonds such as polyvinyl alcohol (PVA) and poly-acrylamide (PAM) have been widely used as matrices in view of their high rigidity and strong interactions with the polar groups of organic dopant molecules. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Utilizing PVA as a matrix, Huang et al obtained a RTP lifetime of 3.16 s by doping carbazol-9-ylacetic acid, 18 Yang et al doped triphenylen-2-yl-boronic acid and realized a RTP lifetime of 3.29 s. 21 Li et al doped simple bi-and terphenylboronic acids and achieved RTP lifetimes of 2.34-2.43 s. 6 Chen et al co-polymerized 9-vinylcarbazole and acrylamide and realized a RTP lifetime of 4.2 s. 19 These are the longest-lived RTP lifetimes obtained so far.…”

Liquid-Crystalline Naphthalene and Perylene Bisimides with a D2–π2–A Architecture for High-Mobility Organic Field-Effect Transistors

“…Rylenediimides are an established class of electron-poor organic semiconductors with high thermal and photochemical stabilities . Because of their thermochromic, photochromic, electrochemical, electrochromic, and nonlinear optical properties, they have been widely used in the fabrication of organic electronic devices ( i.e. field-effect transistors), − perovskite solar cells, ,, chemosensors, , as pigments for bioimaging, and also in anticancer drugs .…”

Co-crystallization and Clustering Afforded Simultaneously Boosted Efficiency, Lifetime, and Color Tunability of Organic Afterglows

“…13,14 Furthermore, color-tunable p-RTP is also highly desirable for future smart devices. 15,16 Unfortunately, it is still difficult to realize readily tunable p-RTP in single-component crystals with high efficiencies, owing to the preliminary mechanism understanding and limited systems.Co-crystallization has proven an effective approach to realize ultralong and high-efficiency RTP; 17−19 however, it remains difficult in adjusting the emission colors within single cocrystals. Previously, we successfully modulated the p-RTP colors in non-conventional luminophores by facilely changing the excitation wavelength (λ ex ) via the clustering-triggered emission (CTE) strategy.…”

“…13,14 Furthermore, color-tunable p-RTP is also highly desirable for future smart devices. 15,16 Unfortunately, it is still difficult to realize readily tunable p-RTP in single-component crystals with high efficiencies, owing to the preliminary mechanism understanding and limited systems.…”

“…Pure organics with persistent room-temperature phosphorescence (p-RTP) have attracted increasingly interest owing to their unique photophysical properties, − excellent processability, , structural designability, and promising applications in bioimaging, , anti-counterfeiting, , sensing, etc. However, because of the forbidden nature of intersystem crossing (ISC) and the susceptibility of triplets, it is highly challenging to achieve efficient pure organic p-RTP under ambient conditions. , Furthermore, color-tunable p-RTP is also highly desirable for future smart devices. , Unfortunately, it is still difficult to realize readily tunable p-RTP in single-component crystals with high efficiencies, owing to the preliminary mechanism understanding and limited systems.…”