Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 475, P. 214872 - 214872
Published: Oct. 13, 2022
Language: Английский
Science Advances, Journal Year: 2022, Volume and Issue: 8(8)
Published: Feb. 25, 2022
Achieving stimulus-responsive ultralong room temperature phosphorescence (RTP) in organic materials especially with full-color tunable emissions is attractive and important but rarely reported. Here, a strategy was reported to realize RTP effect color-tunable by using water as solvent the preparation process without any through covalent linkage of arylboronic acids different π conjugations polymer matrix polyvinyl alcohol. The yielded films exhibit outstanding performance (2.43 s). Furthermore, an excitation-dependent film obtained, afterglow color changes from blue green, then red excitation wavelength increases. property all above sensitive heat stimuli, because rigidity system could be broken water. Last, they were successfully applied multilevel information encryption multicolor paper ink.
Language: Английский
Citations
250
Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(13)
Published: Feb. 1, 2022
Monotonous luminescence has always been a major factor limiting the application of organic room-temperature phosphorescence (RTP) materials. Enhancing and regulating intermolecular interactions between host guest is an effective strategy to achieve excellent performance. In this study, halogen bonding (CN⋅⋅⋅Br) was introduced into host-guest RTP system. The interaction promoted intersystem crossing stabilized triplet excitons, thus helping strong emission. addition, weak sensitive external stimuli such as heat, mechanical force, X-rays. Therefore, excitons were easily quenched colorimetric multi-stimuli responsive behaviors realized, which greatly enriched functionality This method provides new platform for future design materials based on molecules.
Language: Английский
Citations
190
Advanced Materials, Journal Year: 2023, Volume and Issue: 35(28)
Published: April 7, 2023
Amorphous polymers with ultralong room-temperature phosphorescence (RTP) are highly promising for various applications. Particularly, polymer-based RTP materials multiple functions such as color-tunability or stimulus-response desirable multilevel anti-counterfeiting but rarely reported. Herein, a facile strategy is presented to achieve series of lifetime, multicolor afterglow, and reversible response UV irradiation by simply embedding pyridine-substituted triphenylamine derivatives into the polymer matrix poly(vinyl alcohol) (PVA) poly(methyl methacrylate) (PMMA), respectively. Notably, pyridine group capabilities promoting intersystem crossing forming hydrogen-bonding interactions essential triggering from doping PVA system, among which film TPA-2Py@PVA exhibits excellent property an lifetime 798.4 ms high quantum yield 15.2%. By further co-doping commercially available fluorescent dye, afterglow obtained via energy transfer. Meanwhile, doped PMMA system photoactivated properties under continuous irradiation. Finally, potential applications these systems in multidimensional demonstrated.
Language: Английский
Citations
137
Advanced Materials, Journal Year: 2021, Volume and Issue: 34(22)
Published: Oct. 22, 2021
Abstract Constructing multicolor photoluminescent materials with tunable properties is an attractive research objective on account of their abundant applications in science and biomedical engineering. By comparison covalent synthesis, supramolecular chemistry has provided a more competitive promising strategy for the production organic regulation photophysical properties. taking advantage dynamic reversible noncovalent bonding interactions, strategies can, not only simplify design fabrication materials, but can also endow them reversibility stimuli responsiveness, making it much easier to adjust superstructures materials. Occasionally, possible introduce emergent into these which are absent precursor compounds, broadening potential applications. In attempt highlight state‐of‐the‐art available construction smart luminescent overview color‐tunable presented this Review, emphasis being placed examples drawn from host–guest complexes, assemblies crystalline The synthesis room‐temperature phosphorescent modulation described. Finally, future directions scientific challenges field emissive discussed.
Language: Английский
Citations
126
Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(29)
Published: May 16, 2022
There are limited reports about the transformation of pure organic room-temperature phosphorescence (RTP) materials with multilevel stimuli-responsiveness at different RTP emission wavelengths under external stimuli. It is difficult to ensure efficient intersystem crossing (ISC) in states a single-component system. This research conversion small molecule 1,2-bis(4-alkoxyphenyl)ethane-1,2-dione (N-BOX) between high-efficiency blue and yellow by grinding or thermal annealing N-BOX crystals. The crystalline state was easy adjust stimuli (grinding annealing) due its non-compact packing, which led phase transition generated unique stimuli-responsiveness. In particular, quantum yield 7-BOX reached 68.4 %, provides an opportunity for regulation smart optical based on RTP.
Language: Английский
Citations
113
Chemical Science, Journal Year: 2022, Volume and Issue: 13(27), P. 7976 - 7989
Published: Jan. 1, 2022
Purely organic room temperature phosphorescence, especially in aqueous solution, is attracting increasing attention owing to its large Stokes shift, long lifetime, low preparation cost, toxicity, good processing performance advantages, and broad application value. This review mainly focuses on macrocyclic (cyclodextrin cucurbituril) hosts, nanoassembly, macromolecule (polyether) confinement-driven RTP. As an optical probe, the assembly two-stage strategy can realize confined purely RTP achieve energy transfer light-harvesting from fluorescence delayed or phosphorescence. supramolecular widely applied for luminescent materials, cell imaging, other fields because it effectively avoids oxygen quenching. In addition, near-infrared excitation, emission,
Language: Английский
Citations
109
Nature Reviews Chemistry, Journal Year: 2023, Volume and Issue: 7(12), P. 854 - 874
Published: Nov. 22, 2023
Language: Английский
Citations
102
Science China Chemistry, Journal Year: 2022, Volume and Issue: 66(2), P. 304 - 314
Published: Dec. 19, 2022
Language: Английский
Citations
88
Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(35)
Published: June 8, 2022
Synergism between covalent and non-covalent bonds is employed to fix an organic phosphor guest in a rigid inorganic framework, simulating the stiffening effect seen glassy state realizing efficient ultralong room-temperature phosphorescence (RTP). Twelve heavy-atom-free composites have been obtained through introducing arylboric or arylcarboxylic acid derivatives into boric matrix by solid-phase synthesis. Owing of multiple bonds, all show highly persistent RTP molecules with quantum yield ranging from 39.8 % ca. 100 lifetime up 8.74 s, which results 55 s afterglow visible naked eye after exposure portable UV lamp. Interestingly, it found that substitution position quantity carboxyl great influence on phosphorescent properties, heavy-atom invalid such host-guest hybrid systems. The g grade composite easily prepared because solvent-free, green, simple synthesis method. These provide important way for development materials ultrahigh lifetime, as well their practical applications fields anti-counterfeiting information storage, among others.
Language: Английский
Citations
84
Chem, Journal Year: 2023, Volume and Issue: 9(9), P. 2446 - 2480
Published: June 20, 2023
Language: Английский
Citations
78