Efficient ultralong and color-tunable room-temperature phosphorescence from polyacrylamide platform by introducing sulfanilic acid

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

doi:10.1016/j.cej.2022.139753

Cited by 15 publications

(3 citation statements)

References 78 publications

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“…Polymer amorphous materials are more attractive than powdered crystalline materials with easy processing properties. [34][35][36][37][38] In addition, fully aqueous processing does not contaminate or damage the substrate as organic solvents do, so it can be used in the preparation of coatings such as inks. A Morse code encryption technique was proposed by using the multicolored afterglow of the material.…”

Section: Resultsmentioning

confidence: 99%

Multi‐Color Pure Organic Room Temperature Phosphorescent Materials with Long Lifetime and High Efficiency

Guan,

Tang,

Deng

et al. 2023

Adv Funct Materials

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Organic room temperature phosphorescent (ORTP) materials have garnered significant interest in the fields of anti‐counterfeiting, optical display, and bio‐imaging owing to their distinctive optical properties. However, a major drawback of most existing ORTP materials is their short phosphorescence lifetime and low quantum yields (QYs), which greatly limit their applicability across multiple fields. In this paper, a covalently assisted host‐guest doping strategy that involves embedding three aminobenzoic acids with different carboxylate substitution positions into a cyanuric acid (CA) matrix through covalent bonding using microwave heating is proposed. All three prepared ORTP materials exhibit long phosphorescence lifetime exceeding 600 ms and high phosphorescence quantum yields (PhQYs) surpassing 20%. Among them, the composite of 2‐aminoterephthalic acid (2‐A) anuric acid stands out with its unique blue phosphorescence, boasting an exceptional absolute photoluminescence quantum yield (PLQY) of 98.95% and remarkable phosphorescence quantum yield (PhQY) of 76.42%, along with a long lifetime of 800 ms. Importantly, these high‐performance ORTP materials have been successfully utilized in anti‐counterfeiting and display applications.

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Section: Resultsmentioning

confidence: 99%

Multi‐Color Pure Organic Room Temperature Phosphorescent Materials with Long Lifetime and High Efficiency

Guan,

Tang,

Deng

et al. 2023

Adv Funct Materials

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“…[7][8][9] Compared with these phosphorescence materials, pure organic RTP materials have advantages such as low cost, high processability, environmental friendliness, and spectral tunability. [9,10] To overcome the weak spin-orbit coupling and the high sensitivity to temperature and oxygen of pure organic RTP materials, various strategies have been proposed to enhance the intersystem crossing process and reduce the non-radiative transition, such as halogen bonding, [11][12][13] H-aggregation, [9,14] crystal engineering, [15][16][17][18] host-guest doping [6,10,[19][20][21][22] and other strategies. [23,24] However, most reported RTP materials exhibited stationary luminescent behaviors before and after external stimulation under the ambient condition.…”

Section: Introductionmentioning

confidence: 99%

Naphthoic Acid Derivatives@Boric Acid Based Fast Photo‐Activated Room‐Temperature Phosphorescence Materials with Dynamic Changed Emission Color

Cheng,

Fan,

et al. 2024

Advanced Optical Materials

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Photoactivated dynamic ultralong room‐temperature phosphorescent (PAD‐URTP) materials with changing emission colors are attractive and meaningful but are rarely reported. Herein, a one‐pot heat treatment strategy for embedding 1‐hydroxy‐2‐naphthoic acid (1H2NA) and 2‐hydroxy‐1‐naphthoic acid (2H1NA) into boric acid (BA) matrix (named 1H2NA@BA and 2H1NA@BA) to construct PAD‐URTP materials is developed, which exhibits rapid and reversible photoactivated phosphorescence, as well as photo‐stimulated dynamic change of luminescence color. The luminescent color of 1H2NA@BA could continuously change from blue‐purple to bright cyan‐white upon prolonged 365 nm UV light irradiation, which is attributed to the combined effect of static blue fluorescence and dynamic photoactivated green phosphorescence. Significantly, it could emit over 10 s green afterglow after switching off the UV irradiation. The combination of experiment and theoretical calculation results reveal that their PAD‐URTP behavior is attributed to the energy accumulation of triplet states under UV light irradiation. Finally, a series of information encryption and a complete story of “a mouse and cake” are successfully fabricated by using 1H2NA@BA with other luminescence materials. Thus, this study demonstrates fast PAD‐URTP materials with dynamic color‐changing luminescence and opens up new possibilities as the photo‐responsive luminescent material for further mechanistic understanding and future application.

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“…Room-temperature phosphorescent (RTP) materials have sparked ever-heating research during the past few decades because of their promising applications in encryption, bioimaging, chemical sensors, and optoelectronic devices. − The long-lifetime luminescent materials include crystallization/aggregation of small molecules and inorganic compounds composed of heavy metals (transition and rare-earth metals). The most commonly used strategies to achieve organic ultralong RTP materials are crystallization/H-aggregation, , host–guest composition, exciplex formation, , and embedding in a polymer matrix .…”

Section: Introductionmentioning

confidence: 99%

Green Room-Temperature Phosphorescent Carbon Dots with a Lifetime of around 1 s

Jie

Wang

et al. 2023

ACS Appl. Opt. Mater.

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Organic ultralong room-temperature phosphorescence (RTP) has attracted extensive attention and has been a sparklingly heated topic due to its promising applications in bioimaging, encryption, and optoelectronic devices. However, the synthesis procedures for these materials are always cumbersome, costly, and involve toxic substances as well. Herein, a facile, low-cost, and hypotoxic strategy has been developed to achieve green RTP by the hydrothermal reaction of carbon source together with boric acid, resulting in the in situ rigidification of carbon dots into the B2O3 matrix. The designed green RTP carbon dots (CDs@B2O3) exhibited an ultralong lifetime of 905.5 ms, lasting more than 8 s. This excellent performance was mainly due to the restricted vibration and rotation of CDs by the covalent bond formation and the suppressed nonradiative recombination of triplet excitons via B2O3 matrix rigidification. Moreover, we demonstrated the practical applications of the prepared CDs for bioimaging, anti-counterfeiting, and information encryption. This work provides design principles to construct metal-free RTP materials with ultralong lifetime and high stability for promising remarkable applications.

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Efficient ultralong and color-tunable room-temperature phosphorescence from polyacrylamide platform by introducing sulfanilic acid

Cited by 15 publications

References 78 publications

Multi‐Color Pure Organic Room Temperature Phosphorescent Materials with Long Lifetime and High Efficiency

Multi‐Color Pure Organic Room Temperature Phosphorescent Materials with Long Lifetime and High Efficiency

Naphthoic Acid Derivatives@Boric Acid Based Fast Photo‐Activated Room‐Temperature Phosphorescence Materials with Dynamic Changed Emission Color

Green Room-Temperature Phosphorescent Carbon Dots with a Lifetime of around 1 s

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