Room temperature phosphorescence materials based on small organic molecules: Design strategies and applications DOI Creative Commons
Meixia He, C. G. Ding, Hexiang Guo

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(3)

Published: July 23, 2024

Abstract Room‐temperature phosphorescence (RTP) materials have attracted significant attention due to their applications in various fields such as information storage and encryption, organic light‐emitting diode (OLED), sensing, lighting display, biological imaging, photodynamic therapy. Traditionally, RTP can be efficiently developed using inorganic systems with noble metals or rare earth elements. Recently, many efforts been devoted the development of based on small molecules. The strategies construct include hydrogen bonding, heavy atom effect, n –π* transitions, π–π stacking, donor–acceptor host–guest doping. Herein, we summarize recent examples molecules primarily focusing design properties. Moreover, promising OLED, well bio‐imaging phototherapy are discussed. challenges perspectives given provide inspiration toward future materials.

Language: Английский

Photo‐Stimuli‐Responsive Dual‐Emitting Luminescence of a Spiropyran‐Encapsulating Metal–Organic Framework for Dynamic Information Encryption DOI
He‐Qi Zheng, Yang Yu, Zhiyu Wang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(26)

Published: March 9, 2023

The development of photo-stimuli-responsive luminescent materials is essential to address emerging demands in encryption security. Here, a novel dual-emitting material ZJU-128⊃SP (SP = spiropyran) reported, which obtained by encapsulating spiropyran molecules into cadmium-based metal-organic framework (MOF), [Cd3 (TCPP)2 ]·4DMF·4H2 O (ZJU-128, H4 TCPP 2,3,5,6-tetrakis (4-carboxyphenyl)pyrazine). This MOF/dye composite exhibits blue emission from the ligand ZJU-128 at 447 nm and red around 650 spiropyran. Utilizing photoisomerization ring-closed ring-open form under UV-light irradiation, significant fluorescence resonance energy transfer (FRET) process between achieved. As result, gradually decreased while increases. dynamic fluorescent behavior can fully recover original state following exposure visible light (>405 nm). By taking advantage time-dependent fluorescence, dynamical anti-counterfeiting patterns multiplexed coding are successfully developed based on film. work provides an inspiring point for design information with higher security requirements.

Language: Английский

Citations

116
Recent advances in room-temperature phosphorescent materials by manipulating intermolecular interactions DOI
Liangwei Ma, Xiang Ma

Science China Chemistry, Journal Year: 2022, Volume and Issue: 66(2), P. 304 - 314

Published: Dec. 19, 2022

Language: Английский

Citations

88
Stimuli-fluorochromic smart organic materials DOI
Yinjuan Huang, Lijian Ning,

Xiaomin Zhang

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(3), P. 1090 - 1166

Published: Jan. 1, 2024

This review highlights the developments in stimuli-fluorochromic π-conjugated solids beyond organometallic and organic light-responsive compounds, addressing design strategies, mechanisms, limitations, challenges, opportunities.

Language: Английский

Citations

80
Synergetic Conformational Regulations in Ground and Excited States for Realizing Stimulus-Responsive and Wide-Tuning Room-Temperature Phosphorescence DOI
Zhu Chen, Xiaojie Chen,

Dongyu Ma

et al.

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(30), P. 16748 - 16759

Published: July 20, 2023

Understanding the changes of molecular conformations is crucial for realizing multiple emissive triplet states in room-temperature phosphorescence (RTP) materials. In this work, we report two molecules, 4,4'-dimethylbenzil (DMBZ) and 4,4'-di-tert-butylbenzil (DBBZ) with conformation-dependent luminescence, demonstrate that stimulus-responsive wide-tuning RTP emissions can be realized via synergetic conformational regulations ground excited states. Due to changes, DMBZ DBBZ show abundant variations upon external stimuli, including light, force, heat, fumigation. Notably, exhibits both states, which endow unique behaviors. presents phase transitions between supercooled liquid state different solid accompanied by transitions, excited-state are effectively regulated. Moreover, wide-range (between cyan, green, yellow) single component host-guest systems DBBZ, showing potential applications temperature sensing, multicolor dynamic displays, information encryption. These results may provide new visions understanding complicated aggregated state, as well insights into relationship conformations, emissions, stimulus responsiveness.

Language: Английский

Citations

70
Stepwise taming of triplet excitons via multiple confinements in intrinsic polymers for long-lived room-temperature phosphorescence DOI Creative Commons
Liang Gao,

Jiayue Huang,

Lunjun Qu

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Nov. 9, 2023

Abstract Polymeric materials exhibiting room temperature phosphorescence (RTP) show a promising application potential. However, the conventional ways of preparing such are mainly focused on doping, which may suffer from phase separation, poor compatibility, and lack effective methods to promote intersystem crossing suppress nonradiative deactivation rates. Herein, we present an intrinsically polymeric RTP system producing long-lived phosphorescence, high quantum yields multiple colors by stepwise structural confinement tame triplet excitons. In this strategy, performance is improved in two aspects simultaneously: lifetime one polymer (9VA-B) increased more than 4 orders magnitude, maximum yield reached 16.04% halogen-free polymers. Moreover, crack detection realized penetrating steam through exposed humid surroundings as special quenching effect, information storage carried out employing Morse code variations lifetimes. This study provides different strategy for constructing toward targeted applications.

Language: Английский

Citations

70
An elastic organic crystal with multilevel stimuli-responsive room temperature phosphorescence DOI Creative Commons

Jinming Song,

Yuhang Zhou,

Zhichao Pan

et al.

Matter, Journal Year: 2023, Volume and Issue: 6(6), P. 2005 - 2018

Published: May 2, 2023

Language: Английский

Citations

62
Recent progress with the application of organic room-temperature phosphorescent materials DOI Creative Commons

Mengxing Ji,

Xiang Ma

Industrial Chemistry and Materials, Journal Year: 2023, Volume and Issue: 1(4), P. 582 - 594

Published: Jan. 1, 2023

A summary of recent progress with the application organic room-temperature phosphorescent materials in luminescence and display, environmental detection bioimaging.

Language: Английский

Citations

53
Multiple Stimuli‐Responsive Luminescent Chiral Hybrid Antimony Chlorides for Anti‐Counterfeiting and Encryption Applications DOI
Danyang Liu, Hai‐Yang Li, Runping Han

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(36)

Published: July 18, 2023

Stimuli-responsive circularly polarized luminescence (CPL) materials are ideal for information anti-countering applications, but the best-performing have not yet been identified. This work presents enantiomorphic hybrid antimony halides R-(C5 H12 NO)2 SbCl5 (1) and S-(C5 (2) showing mirror-imaged CPL activity with a dissymmetry factor of 1.2×10-3 . Interestingly, DMF-induced structural transformation is realized to obtain non-emissive ⋅ DMF (3) (4) upon exposure vapor. The process reversed heating. DFT calculations showed that DMF-induced-quenched-luminescence attributed intersection ground excited state curves on configuration coordinates. Unexpectedly, nanocrystals chiral 1 2 were prepared indicate excellent solution performance. reversible PL switching gives system applications in technology, anti-counterfeiting, encryption-decryption, logic gates.

Language: Английский

Citations

50
Application of room-temperature phosphorescent carbon dots in information encryption and anti-counterfeiting DOI
Linlin Shi,

Luyao Ding,

Yongqiang Zhang

et al.

Nano Today, Journal Year: 2024, Volume and Issue: 55, P. 102200 - 102200

Published: Feb. 13, 2024

Language: Английский

Citations

50
Tailored Fabrication of Full‐Color Ultrastable Room‐Temperature Phosphorescence Carbon Dots Composites with Unexpected Thermally Activated Delayed Fluorescence DOI
Lin Ai,

Wenjuan Xiang,

Jiping Xiao

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(27)

Published: April 23, 2024

Abstract The development of single‐system materials that exhibit both multicolor room‐temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) with tunable after glow colors channels is challenging. In this study, four metal‐free carbon dots (CDs) are developed through structural tailoring, panchromatic high‐brightness RTP achieved via strong chemical encapsulation in urea. maximum lifetime quantum yield reaches 2141 ms 56.55%, respectively. Moreover, CDs‐IV@urea, prepared coreshell interaction engineering, exhibits a dual afterglow red green TADF. degree conjugation functional groups precursors affects the binding interactions nitrogen cladding on CDs, which turn stabilizes triplet energy levels gap between S 1 T (Δ E ST ) to induce RTP. enhanced wrapping lowers Δ , promoting reverse intersystem crossing, leads This fully state, thus stabilizing material water, even extreme environments such as acids oxidants. These tested multicolor, time, temperature multiencryption well vivo bioimaging. Hence, these have promising practical applications information security biomedical diagnosis treatment.

Language: Английский

Citations

48