Chemical Communications, Journal Year: 2023, Volume and Issue: 59(82), P. 12302 - 12305
Published: Jan. 1, 2023
We report a multi-resonant thermally activated delayed fluorescent (MRTADF) afterglow emitter with unprecedented long emission lifetime > 100 ms, full-width at half-maximum < 40 nm, and deep-blue color of CIEy 0.048. Such emitters remain rarely achieved would show potential applications in multiplexed bioimaging high-density information encryption.
Language: Английский
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(21)
Published: March 11, 2024
Abstract Molecular ultralong room‐temperature phosphorescence (RTP), exhibiting multiple stimuli‐responsive characteristics, has garnered considerable attention due to its potential applications in light‐emitting devices, sensors, and information safety. This work proposes the utilization of photochemical cascade processes (PCCPs) molecular crystals design a stepwise smart RTP switch. By harnessing sequential dynamics photo‐burst movement (induced by [2+2] photocycloaddition) photochromism photogenerated radicals) bismuth (Bi)‐based metal‐organic halide (MOH), continuous photo‐responsive can be achieved. Furthermore, utilizing same Bi‐based MOH, diverse application demonstrations, such as multi‐mode anti‐counterfeiting encryption, easily implemented. thus not only serves proof‐of‐concept for development solid‐state PCCPs that integrate photosalient effect with light‐chemical‐mechanical energy conversion, but also lays groundwork designing new MOHs dynamically responsive RTP.
Language: Английский
Citations
53
Advanced Science, Journal Year: 2024, Volume and Issue: 11(17)
Published: Feb. 29, 2024
Ensuring information security has emerged as a paramount concern in contemporary human society. Substantial advancements this regard can be achieved by leveraging photonic signals the primary carriers, utilizing logical gates capable of wavelength tunability across various time and spatial domains. However, challenge remains rational design materials possessing space-time-color multiple-resolution capabilities. In work, facile approach is proposed for crafting metal-organic halides (MOHs) that offer resolution. These MOHs integrate time-resolved room temperature phosphorescence color-resolved excitation dependencies with both space-resolved ex situ optical waveguides heterojunctions. Capitalizing on these multifaceted properties, MOHs-based two-dimensional (2D) heterojunctions exhibit ability to tune full-color emissions spectra from blue red, operating within different temporal scales. Therefore, work introduces an effective methodology engineering resolved MOH microstructures, holding significant promise development high-density devices.
Language: Английский
Citations
46
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: May 8, 2024
Abstract Room temperature phosphorescence materials have garnered significant attention due to their unique optical properties and promising applications. However, it remains a great challenge finely manipulate phosphorescent achieve desirable performance on demand. Here, we show feasible strategy organic by introducing dynamic lanthanide coordination. The phosphors of terpyridine phenylboronic acids possessing excellent coordination ability are covalently embedded into polyvinyl alcohol matrix, leading ultralong room with lifetime up 0.629 s. Notably, such performance, including intensity lifetime, can be well controlled varying the dopant. Relying modulable these lanthanide-manipulated films, multi-level information encryption attacker-misleading spatial-time-resolved applications is successfully demonstrated greatly improved security level. This work opens an avenue for manipulating meet versatile uses in
Language: Английский
Citations
39
Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 516, P. 215987 - 215987
Published: May 31, 2024
Language: Английский
Citations
27
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(37)
Published: March 29, 2024
Abstract Organic afterglow can be generated from persistent thermally activated delayed fluorescence (pTADF) or organic ultralong room temperature phosphorescence (OURTP), but the pTADF plus OURTP type is challenging to achieve, especially for color‐tunable and high‐temperature ones. Herein, an accessible strategy toward such dual‐mode presented by doping indolo[3,2‐b]carbazole ( ICZ‐ p 1 ) into polymethyl methacrylate (PMMA). The resulting films exhibit photo‐activated with two emission peaks of ca . 435 497 nm. Impressively, their longest lifetimes respectively reach 2.28 2.47 s at 298 K, along 0.32 0.42 360 enabling high temperature. Experimental theoretical results reveal that associated elimination molecular O 2 inside film composed multi‐resonance (MR) effect OURTP. By altering 77 358 afterglows green blue are harvested ranges. Benefiting (MRTADF) characteristics, this emitter release narrow‐band electroluminescence. Consequently, obtained here may offer important references chasing MRTADF OURTP‐type showing features.
Language: Английский
Citations
19
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(36), P. 24871 - 24883
Published: Aug. 30, 2024
Organic room-temperature phosphorescence (RTP) and afterglow materials hold great potential for various applications, but there remain inherent trade-offs between the efficiency lifetime. Here, we propose a dual-mechanism design strategy, leveraging RTP or thermally activated delayed fluorescence (TADF) mechanism high organic long-persistent luminescence (OLPL) prolonged duration. The intramolecular charge transfer (ICT)-type difluoroboron β-diketonate molecules with large S1 dipole moment are doped as luminescent component into matrix moment, series of TADF-type can be achieved an up to 88.7% lifetime 200 ms. To prolong duration, electron donor is introduced third generate traps facilitate separation. obtained exhibit dual mechanism, first exhibiting TADF/RTP 50.9%, followed by hours-long OLPL emission 13.1%. Further investigations reveal that appropriate heavy-atom effect intersystem crossing process, which promote separation process thus improve performance. Additionally, rare-earth upconversion enable their near-infrared excitation properties, showcasing applications in bioimaging.
Language: Английский
Citations
18
Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(13), P. 6636 - 6653
Published: Jan. 1, 2024
An overview of the design strategies and their applications tunable molecular solid-state emission based on customized packing α-cyanodiarylethenes (CAEs) by stimuli response as well utilization co-assembly.
Language: Английский
Citations
16
Chemistry of Materials, Journal Year: 2024, Volume and Issue: 36(6), P. 3000 - 3012
Published: March 18, 2024
Narrowband organic afterglow materials show application in multiplexed bioimaging and others. However, featuring an intrinsic narrowband with emission lifetime >100 ms remain elusive. We report a serendipitous finding of chemical reaction from aromatic amine to luminescent acridone. Interestingly, upon doping into suitable matrix, acridone molecules display deep-blue full widths at half-maximum <40 nm CIEy < 0.08 under ambient conditions. The originates the multiresonant thermally activated delayed fluorescence (MRTADF) due suppressed vibronic coupling rigid molecular backbone system. Compared conventional ones, here MRTADF emitters feature modest kRISC 1–10 s–1 ultralong ms, which are further fashioned aqueous system exhibiting high color purity, visible-light-excitable property, potential bioapplication.
Language: Английский
Citations
13
Science China Chemistry, Journal Year: 2024, Volume and Issue: 67(7), P. 2362 - 2372
Published: May 27, 2024
Language: Английский
Citations
12
Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(21)
Published: March 11, 2024
Abstract Molecular ultralong room‐temperature phosphorescence (RTP), exhibiting multiple stimuli‐responsive characteristics, has garnered considerable attention due to its potential applications in light‐emitting devices, sensors, and information safety. This work proposes the utilization of photochemical cascade processes (PCCPs) molecular crystals design a stepwise smart RTP switch. By harnessing sequential dynamics photo‐burst movement (induced by [2+2] photocycloaddition) photochromism photogenerated radicals) bismuth (Bi)‐based metal‐organic halide (MOH), continuous photo‐responsive can be achieved. Furthermore, utilizing same Bi‐based MOH, diverse application demonstrations, such as multi‐mode anti‐counterfeiting encryption, easily implemented. thus not only serves proof‐of‐concept for development solid‐state PCCPs that integrate photosalient effect with light‐chemical‐mechanical energy conversion, but also lays groundwork designing new MOHs dynamically responsive RTP.
Language: Английский
Citations
10