Time-dependent photo-activated aminoborane room-temperature phosphorescence materials with unprecedented properties: simple, versatile, multicolor-tuneable, water resistance, optical information writing/erasing, and multilevel data encryption

Ding, Huangting; Sun, Yuqing; Meng, Tao; Wen, Jinxiu; Yue, Shiwen; Ye, Peng; Li, Fēi; Zheng, Liping; Wang, Suning; Shi, Yong; Cao, Qiue

doi:10.1039/d3sc00568b

Cited by 22 publications

(10 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Poly(methyl methacrylate) (PMMA) is also a commonly used liposoluble polymer to construct amorphous pure organic RTP materials . Cao and co-workers synthesized two triarylborane derivatives, B- o -Met-Cz and BN- o -Met-CZ (Figure b), and doped them into a PMMA matrix at a concentration of 0.5 wt %. The BN- o -Met-CZ@PMMA with dimethylamino group presented excellent RTP performance (Φ RTP = 6.83%, τ RTP = 0.18 s), while B- o -Met-CZ@PMMA did not show any RTP.…”

Section: Construction Of Polymer-based Rtp Systemsmentioning

confidence: 99%

Recent Advances of Pure Organic Room Temperature Phosphorescence Based on Functional Polymers

Ding,

Ma,

Tian

2023

Acc. Mater. Res.

View full text Add to dashboard Cite

Conspectus The phosphorescence is produced by the radiative transition of the excited triplet state which is generated by the intersystem crossing (ISC) from the excited singlet state. Compared with fluorescence, it has a longer luminescence lifetime and larger Stokes shift, so phosphorescent materials have great application value in fields such as displays, anticounterfeiting, and imaging. But due to the low ISC rate of organic molecules, the slow radiative transition rate of the triplet state, and the large nonradiative energy loss caused by molecular vibration, pure organic room temperature phosphorescence (RTP) is usually difficult to obtain. Among the most widely used strategies including crystal assembly, polymerization, and host–guest encapsulation, the polymerization strategy based on rigid polymers has achieved great success and widespread attention due to their easy processing and excellent luminescence performance. The main function of polymers is to fix the luminophore into the matrix and suppress the energy loss of the triplet state caused by nonradiative transitions and oxygen quenching. That is, polymers provide a rigid microenvironment necessary for the RTP, although some polymers are flexible and stretchable. Conventional polymers have limited interaction with luminophores and do not have the function of promoting triplet states. Therefore, the high RTP quantum yield depends more on the structural design of luminophores. By modification of the structure, functionalized polymers can be endowed with the ability to regulate the singlet and triplet energy levels of luminophores, enhance ISC, and increase the quantum yield of RTP. The selection of functionalized polymers also enriches the diverse properties of RTP materials. This Account summarizes the latest research progress in the field of polymer-based RTP and RTP enhancement by functionalized polymers. Luminophores are used to construct RTP systems by doping, covalent linking, or supramolecular interactions with polymers such as PAA, PMMA, PVA, and PAM. To further strengthen polymer rigidity, secondary processing has been successfully employed to synergistically suppress nonradioactivation and enhance RTP performance, such as hydrogen bonding bridges, host–guest encapsulation, and cross-linking. The function of polymers is no longer limited to suppressing nonradiative transitions but also includes enhancing the yield of triplet states and generating special luminescence phenomena. A few functionalized polymers are specially designed to utilize external heavy atom effects, dipole–dipole interactions, and electrostatic and diffusion interactions with the luminophores to promote the ISC rate. Due to the diversification and functionalization of polymers, RTP systems were developed with various special luminescence phenomena such as photoactivation, excitation wavelength dependence, photochromism, circularly polarized RTP, and stimulus-response. We hope the summarized functions and development trends of polymers in RTP systems can provide helpful gui...

show abstract

Section: Construction Of Polymer-based Rtp Systemsmentioning

confidence: 99%

Recent Advances of Pure Organic Room Temperature Phosphorescence Based on Functional Polymers

Ding,

Ma,

Tian

2023

Acc. Mater. Res.

View full text Add to dashboard Cite

show abstract

“…4, bottom). Although spatiotemporal patterning using photoactivated phosphorescence materials has been reported recently, 29–31,41 this work provides the first example where not only emission but also absorption are spatiotemporally controlled based on photochemical reactions, as far as we know. Such spatiotemporal patterning is promising for applications including encryption technologies and display devices.…”

mentioning

confidence: 92%

“…Actually, photoactivated phosphorescence based on triplet quenching by molecular oxygen in gel or polymer-film matrices has recently attracted increasing attention in applications to encryption technology. 29–31 On the other hand, although clock or sigmoidal dynamics are seen in many photochemical reactions as well, 32,33 such clock behaviors have scarcely been utilized positively in photofunctional materials. This would be due to the difficulty in the oxygen control in solutions and the lack of reversibility.…”

mentioning

confidence: 99%

Photochromic clock reaction of anthraquinone in supramolecular gel and its application to spatiotemporal patterning

Fujisaki,

Nagai,

Okayasu

et al. 2024

Mater. Adv.

View full text Add to dashboard Cite

show abstract

“…The rate of phosphorescence ( k p ) can be enhanced using a rare-earth metal-based organometallic complex, which increases the spin–orbit coupling (SOC), making the transition quantum-mechanically allowed. − Since these systems are expensive, an alternative approach is needed to circumvent these limitations. Over the past decade, substantial progress has been made in developing organic blue-green and yellow-red RTP emitters with millisecond (ms) lifetimes for data security − and sensors , due to their advantages of structural versatility and facile processability. It has been established that the RTP characteristics of most of the reported twisted geometries heavily rely on the heavy-atom effect, , El-Sayed’s rule, , the energy gap principle, ,,,− El-Sayed analogy, donor–acceptor, donor–spacer–acceptor, and donor–sp 3 linker–acceptor. ,,− In addition, the incorporation of intermolecular interactions, ,, aggregation, ,,,− and rigid single crystals, along with host–guest studies , has also been demonstrated to significantly suppress radiationless decays ( k nr ).…”

Section: Introductionmentioning

confidence: 99%

Conformational Effect of Catechol-Terephthalonitrile Emitters Leading to Ambient Violet Phosphorescence

Deka,

Dey,

Upadhyay

et al. 2024

J. Phys. Chem. A

View full text Add to dashboard Cite

Organic ambient violet phosphorescent (AVP) materials are of great interest due to their involvement of high energy and longer-lived triplet excitons. Here, we show three fused ring functionalized donor−acceptor−donor (D−A−D/D− A−D′) emitters (BPT1−BPT3), in which two catechol-based donors (3,4dihydroxybenzophenone, catechol, or 3,5-ditert-butylcatechol) are covalently fused to the terephthalonitrile acceptor via four O−C single bonds. Spectroscopic analysis revealed that all the molecules show AVP (∼390−394 nm, τ AVP = 73−101 μs) with phosphorescence quantum yields (ϕ P ) of 1.8−27.4% due to low singlet−triplet gaps (0.036−0.046 eV) and conformational effects. BPT3 with bulky tert-butyl groups increases AVP (ϕ P = 27.4%). Quantum chemistry calculations reveal flat (F1) and twisted (F2) conformers (ground state) with a low energy difference (∼4−5 kcal/ mol) for all molecules; the F1 conformer is responsible for efficient AVP, while weak blue thermally activated delayed fluorescence with longer-lived delayed components is realized from the F2 conformer. This approach may provide important clues for the design of high-energy organic phosphorescent materials.

show abstract

Time-dependent photo-activated aminoborane room-temperature phosphorescence materials with unprecedented properties: simple, versatile, multicolor-tuneable, water resistance, optical information writing/erasing, and multilevel data encryption

Abstract: Triarylboranes-based pure organic room-temperature phosphorescent (RTP) materials are rarely investigated because of their large steric hindrance and electron defect of the boron atom. As a result, it is quite difficult...

Cited by 22 publications

References 51 publications

Recent Advances of Pure Organic Room Temperature Phosphorescence Based on Functional Polymers

Recent Advances of Pure Organic Room Temperature Phosphorescence Based on Functional Polymers

Photochromic clock reaction of anthraquinone in supramolecular gel and its application to spatiotemporal patterning

Conformational Effect of Catechol-Terephthalonitrile Emitters Leading to Ambient Violet Phosphorescence

Contact Info

Product

Resources

About