Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 142543 - 142543
Published: April 1, 2025
Language: Английский
Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 142543 - 142543
Published: April 1, 2025
Language: Английский
Science China Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 2, 2025
Language: Английский
Citations
1Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 28, 2025
Abstract Blue is one of the three primary colors, and it a crucial element in regulation application organic room‐temperature phosphorescence (ORTP). However, considerable Stokes shift small molecules presents challenge for creating blue afterglow materials. To address this, host‐guest‐doped materials are prepared by selecting compounds with similar structures self‐doping. This method effectively regulated long‐lasting phosphorescence. Additionally, persistent‐RTP long‐persistent luminescence (LPL) properties can be further enhanced incorporating rigid or flexible polymer network, dense environment between host guest. Remarkably, lifetime duration polymer‐assisted doped ≈5 times greater than those host‐guest crystal Apart from its high efficiency, environmental friendliness, easy synthesis, this ORTP material boasts thermal stability flexibility. Furthermore, demonstrates potential applications such as information encryption anti‐counterfeiting across various media, including paper, cotton thread, leaves.
Language: Английский
Citations
1Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(46)
Published: July 9, 2024
Abstract In recent years, there is a growing interest in developing ultralong organic room‐temperature phosphorescence (ORTP) with lifetimes the range of seconds. As one important three primary colors, blue ORTP an indispensable core component RTP regulation and application, however, large Stokes shift characteristics pose certain challenges ORTP. Here, new family phosphors are synthesized realized through crystal assembly water phase. Remarkably, compared to materials obtained phases, enabled long‐lived up 2.3 s quantum yield reached as high 29.27%. addition efficient green form, such dark possessed thermal stability flexible tunability. Moreover, superiority selected components demonstrated by comparing them polymer proposed show great potential programmable information encryption/anti‐counterfeiting.
Language: Английский
Citations
8Smart Molecules, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 4, 2025
Abstract Stimulus‐responsive organic room temperature phosphorescent (RTP) materials have received significant attention in bioimaging, sensing, and data storage because of their controllable dynamic variability rapid response. Organic co‐crystals, with tailor‐designed optical properties through manipulation aggregate structures, proven to be very effective elucidating the structure‐property relationship RTP at molecular level. Therefore, enhancing rigid frameworks that promote intersystem crossing is a valid approach. Notably, realization co‐crystal performance by altering components or adjusting crystal lattices highly appealing; however, this has not been fully addressed. In study, an co‐crystal, 4,4′‐bipyridine (44BD), was employed as host, 1,4‐diiodotetrafluorobenzene (DITF) 4‐bromo‐2,3,5,6‐tetrafluorobenzoic acid (TFBA) were guests. The 44BD‐DITF exhibited orange RTP, whereas 44BD‐TFBA displayed bright yellow RTP. Crystal analysis theoretical calculations revealed dense packing abundant intermolecular interactions within these co‐crystals are crucial for emergence both show reversible acid/base stimulus response, is, exposure hydrochloric (HCl) fumes results quenching which can subsequently restored triethylamine (TEA) fumigation. This study presents approach towards switching thus offering opportunities development stimulus‐responsive next‐generation applications.
Language: Английский
Citations
1Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160535 - 160535
Published: Feb. 1, 2025
Language: Английский
Citations
1Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown
Published: March 18, 2025
The simultaneous generation and stabilization of triplet excitons are the key to realizing efficient organic room temperature phosphorescence (RTP), which is challenging owing obscure mechanism structure-property relationships. Herein, a strategy lone-pair-mediated multiple through-space interactions (TSIs) proposed availably induce RTP. By incorporating heteroatoms facilitate n-n n-π interactions, lone pairs delocalized throughout structure, resulting in dense splitting excited-state energy levels. Thus, more matched levels with small gap between singlet states (ΔEST) emerge, intersystem crossing (ISC) transition channels that assist generation. strong TSIs also effectively rigidify molecular structures thus stabilize for radiation. Furthermore, manipulation TSI intensity allows efficiency enhancement, persistent time prolongation, tolerance high temperatures This work not only explores fundamental principle RTP from new view but provides universal ISC promotion triple stabilization.
Language: Английский
Citations
1Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 16, 2024
Organic phosphorescence or thermally activated delayed fluorescence (TADF) scintillators, while effective in utilizing triplet excitons, are sensitive to temperature changes, which can impact radioluminescence performance. In this study, we have developed a type of temperature-adaptive organic scintillator with and TADF dual emission. These scintillators automatically switch modes enabling efficient from 77 400 K. The highest photoluminescence quantum yield light 83.2% 78,229 ± 562 photons MeV
Language: Английский
Citations
6Chemical Science, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
Smart optical materials with tunable fluorescence and room temperature phosphorescence (RTP) exhibit promising application prospects in the field of intelligent switches, information security,
Language: Английский
Citations
5CrystEngComm, Journal Year: 2024, Volume and Issue: 26(35), P. 4751 - 4765
Published: Jan. 1, 2024
The article highlights the recent developments on some interesting optical traits of organic charge transfer complexes. Properties like room temperature phosphorescence, thermally activated delayed fluorescence, circularly polarised luminescence, etc. , are summarized.
Language: Английский
Citations
4Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 23, 2024
Abstract Double phosphorescence components from a single organic molecule is rarely reported before because most molecules must follow Kasha's rule and merely emit T 1 state. We discover unique phenomenon of conformation‐controlled expression double components. The green component the red are assigned to dinaphthylamine moiety pyrene unit N,N‐di(naphthalen‐2‐yl)pyren‐1‐amine (NaPy), respectively. NaPy shows time‐dependent excitation‐dependent afterglow color change in copolymerized MMA film at room temperature due simultaneous However, PMMA MA film, just expresses component, suggesting that matrix rigidity greatly affects via altering conformation NaPy. In low‐rigidity matrix, dyanmic free rotation triplet excitons relax T1 state inner conversion or vibration relaxation, leading sole component. high‐rigidity highly twisted stabilized limitation 2 return S0 separately, resulting Thus, follows but disobeys matrix. can function relatively independently, wide‐range change.
Language: Английский
Citations
4