Rational molecular and doping strategies to obtain organic polymers with ultralong RTP

zhang, yuefa; Zhang, Shiguo; Liu, Guanyu; Sun, Qikun; Xue, Shanfeng; Yang, Wenjun

doi:10.1039/d3sc01276j

Cited by 23 publications

(7 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared to doped polymer RTP systems, the copolymerization method , is to connect the luminophore with the polymer through covalent bond. This method can solve the solubility problem of luminophores and polymers and make the luminophores more evenly dispersed in the polymer matrix to avoid phase separation.…”

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

“…In recent years, afterglow materials have attracted great attention because of their unique properties. 1,2 Currently, a large number of inorganic afterglow materials have been developed; however, rare earth materials used in the preparation of inorganic afterglow materials are expensive and synthesis processes are complicated, limiting their further development. Compared to inorganic counterparts, organic room-temperature phosphorescent (RTP) materials have the advantages of low cost, rich sources, easy synthesis and adjustable structures.…”

Section: Introductionmentioning

confidence: 99%

ε-Polylysine organic ultra-long room-temperature phosphorescent materials based on phosphorescent molecule doping

Cui,

Ali,

Shen

et al. 2024

Chem. Sci.

View full text Add to dashboard Cite

show abstract

“…For example, Zhang and co-workers doped 9-phenylcarbazol-2ylboronic acid into poly(vinyl alcohol) (PVA) matrices, and the afterglow lifetime and emission color were tuned by controlling the chemical and physical reactions between host and guest molecules. 25 Li's group also developed the stimulusresponsive and color-tunable afterglow materials by doping arylboronic acids into PVA. 26 However, these strategies needed a complicated synthesis process, and full-color afterglow, especially with high afterglow emission efficiency (>40%) and long emission lifetime (>1 s), is still difficult to realize.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the vacant p orbitals of B atoms are reported to be effective functional sites to interact with π–π* and n–π* transitions, which could be used as the luminescence center to modulate and expand the afterglow colors. , This demonstrates the great possibility of increasing the afterglow intensity of arylboronic acids and further tuning their color by utilizing proper strategies such as host–guest doping. For example, Zhang and co-workers doped 9-phenylcarbazol-2-ylboronic acid into poly(vinyl alcohol) (PVA) matrices, and the afterglow lifetime and emission color were tuned by controlling the chemical and physical reactions between host and guest molecules . Li’s group also developed the stimulus-responsive and color-tunable afterglow materials by doping arylboronic acids into PVA .…”

Section: Introductionmentioning

confidence: 99%

Wide-Color-Tunable Afterglow Materials from Blue to Deep Red via Boric Acid Assisted Molecular Doping

Chen,

Fu,

Chang

et al. 2024

J. Phys. Chem. C

View full text Add to dashboard Cite

The construction of afterglow materials with full-color tunable emissions is attractive but still a challenging task. Herein, a host–guest doping strategy was proposed to produce afterglow materials with an emission-color span of almost 210 nm (from blue to deep red) by heat treating the aqueous mixture of arylboronic acids and boric acid (BA). In-depth structural, photophysical, and theoretical studies revealed that the heat treatment process resulted in the dehydration of BA and the formation of a glassy state host, and arylboronic acids were loaded as guest molecules through H-bonds and covalent bonds with BA. The afterglow originated from arylboronic acids, and the afterglow color of products was related to their degree of conjugation of aromatic groups. The host–guest doping strategy significantly improved the photophysical performances of arylboronic acids, achieving a photoluminescence quantum yield as high as 81.7% and an emission lifetime of 2.90 s (afterglow >22 s). Triple information encryption based on emission lifetime and color-encoding was also achieved, demonstrating their commercial potential for use in anticounterfeiting and information storage.

show abstract

Rational molecular and doping strategies to obtain organic polymers with ultralong RTP

Abstract: Despite organic doped polymers and room temperature phosphorescence (RTP) mechanisms have been widely reported, RTP lifetimes over 3 s are rare and RTP enhancing strategy is understanding. Herein, we demonstrate...

Cited by 23 publications

References 30 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

ε-Polylysine organic ultra-long room-temperature phosphorescent materials based on phosphorescent molecule doping

Wide-Color-Tunable Afterglow Materials from Blue to Deep Red via Boric Acid Assisted Molecular Doping

Contact Info

Product

Resources

About