Color-tunable and ultralong organic room temperature phosphorescence from poly(acrylic acid)-based materials through hydrogen bond engineering

Kong, Liuqi; Zhu, Yan; Sun, Shaochen; Li, Hongye; Tao, Farong; Li, Fēi; Wang, Liping; Li, Guang

doi:10.1039/d2tc04789f

Cited by 10 publications

(5 citation statements)

References 59 publications

(64 reference statements)

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“…Thus, it can be concluded that the water molecules entering the RTP paper can break the hydrogen bonds between the cellulose chains, disrupting the rigid environment and quenching the RTP. [ 27n,29 ] When the RTP paper was treated with heat, the cellulose intermolecular hydrogen bonds were formed again, recovering the RTP (Figure 3h). It is worth noting that there was almost no change in the phosphorescence intensity of the RTP paper stored under ambient conditions for 15 days, and the afterglow colors of RTP paper were not affected even when exposed to sunlight (Figures S31 and S32, Supporting Information), indicating the excellent stability of the RTP paper in the practical environment.…”

Section: Resultsmentioning

confidence: 99%

Large‐Scale Preparation for Multicolor Stimulus‐Responsive Room‐Temperature Phosphorescence Paper via Cellulose Heterogeneous Reaction

Gao,

Shi,

Lü

et al. 2023

Advanced Materials

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The large‐scale preparation of sustainable room‐temperature phosphorescence (RTP) materials, particularly those with stimulus‐response properties, is attractive but remains challenging. This study develops a facile heterogeneous B─O covalent bonding strategy to anchor arylboronic acid chromophores to cellulose chains using pure water as a solvent, resulting in multicolor RTP cellulose. The rigid environment provided by the B─O covalent bonds and hydrogen bonds promotes the triplet population and suppresses quenching, leading to an excellent lifetime of 1.42 s for the target RTP cellulose. By increasing the degree of chromophore conjugation, the afterglow colors can be tuned from blue to green and then to red. Motivated by this finding, a papermaking production line is built to convert paper pulp reacted with an arylboronic acid additive into multicolor RTP paper on a large scale. Furthermore, the RTP paper is sensitive to water because of the destruction of hydrogen bonds, and the stimuli‐response can be repeated in response to water/heat stimuli. The RTP paper can be folded into 3D afterglow origami handicrafts and anti‐counterfeiting packing boxes or used for stimulus‐responsive information encryption. This success paves the way for the development of large‐scale, eco‐friendly, and practical stimuli‐responsive RTP materials.

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Section: Resultsmentioning

confidence: 99%

Large‐Scale Preparation for Multicolor Stimulus‐Responsive Room‐Temperature Phosphorescence Paper via Cellulose Heterogeneous Reaction

Gao,

Shi,

Lü

et al. 2023

Advanced Materials

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“…(a) Chemical structure of the doped phenylboronic acid and benzoic acid derivatives and photographs of PAA-based RTP materials with a 1000:15 molar ratio of AA to the doped luminophores under 254 nm UV light and after ceasing of irradiation under ambient conditions. Reproduced with permission from ref . Copyright 2023 Royal Society of Chemistry.…”

Section: Construction Of Polymer-based Rtp Systemsmentioning

confidence: 99%

“…In 2023, Li et al 24 developed a series of poly(acrylic acid) (PAA)-based RTP materials. A series of phenylboric acid and benzoic acid derivatives, CPBA, BDA, PBA, TPA, and BA, were selected as luminophores to ultimate hydrogen bond with the PAA matrix (Figure 3a).…”

Section: Polymers Doped With Organic Luminophorementioning

confidence: 99%

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

Ding,

Ma,

Tian

2023

Acc. Mater. Res.

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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...

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“…These materials can continue emitting light even after the cessation of excitation by an external light source. This feature endows OLPL materials with vast prospects for application across many fields, including anti-counterfeiting, 1–3 encryption, 4–7 and biological imaging. 8,9 At present, researchers have explored many strategies for constructing organic long-persistent luminescent materials, such as polymerization, 9,10 aggregation, 11,12 introduction of heavy atoms, 13,14 host–guest (H–G) doping, 15–18 and multi-component doping.…”

Section: Introductionmentioning

confidence: 99%

Growth regulation of an easily crystallized organic long-persistent luminescence system with in situ anti-counterfeiting applications

Liu,

Song,

Wang

et al. 2024

J. Mater. Chem. C

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Color-tunable and ultralong organic room temperature phosphorescence from poly(acrylic acid)-based materials through hydrogen bond engineering

Abstract: Color-tunable and ultralong organic room temperature phosphorescence (URTP) materials have drawn extensive attention due to their various applications in many fields. Herein, a series of poly(acrylic acid) (PAA)-based RTP materials...

Cited by 10 publications

References 59 publications

Large‐Scale Preparation for Multicolor Stimulus‐Responsive Room‐Temperature Phosphorescence Paper via Cellulose Heterogeneous Reaction

Large‐Scale Preparation for Multicolor Stimulus‐Responsive Room‐Temperature Phosphorescence Paper via Cellulose Heterogeneous Reaction

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

Growth regulation of an easily crystallized organic long-persistent luminescence system with in situ anti-counterfeiting applications

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