Co-crystallization and Clustering Afforded Simultaneously Boosted Efficiency, Lifetime, and Color Tunability of Organic Afterglows

Zhu, Tianwen; Zheng, Shuyuan; Yang, Tianjia; Yuan, Wang Zhang

doi:10.1021/acs.jpclett.3c01552

Cited by 12 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, Yuan and co-workers reported another cocrystal with simultaneously enhanced phosphorescence efficiency and emission lifetime of up to 12% and 898 ms, respectively. [28] The cocrystal based on MA and glutarimide (GI) with a stoichiometric ratio of 1:2 was prepared. Interestingly, the afterglow color of MA-GI cocrystals shifted from blue to green when the excitation wavelength changed from 321 to 365 nm, exhibiting color-tunable phosphorescence emission (Figure 5a).…”

Section: Cocrystalsmentioning

confidence: 99%

“…Reproduced with permission. [28] Copyright 2023, American Chemical Society. c) Schematic illustration of the molar packing of PR and the cocrystals of PR and DITFB at molar ratios of 2:1, and 1:1 and the corresponding photographs of the three crystals.…”

Section: Cocrystalsmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Enhancing Purely Organic Room Temperature Phosphorescence via Supramolecular Self‐Assembly

Zheng,

Zhang,

Cai

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

Long‐lived and highly efficient room temperature phosphorescence (RTP) materials are in high demand for practical applications in lighting and display, security signboards, and anti‐counterfeiting. Achieving RTP in aqueous solutions, near‐infrared (NIR) phosphorescence emission and NIR‐excited RTP are crucial for applications in bio‐imaging, but these goals pose significant challenges. Supramolecular self‐assembly provides an effective strategy to address the above problems. This review focuses on the recent advances in the enhancement of RTP via supramolecular self‐assembly, covering four key aspects: small molecular self‐assembly, cocrystals, the self‐assembly of macrocyclic hosts and guests, and multi‐stage supramolecular self‐assembly. This review not only highlights progress in these areas but also underscores the prominent challenges associated with developing supramolecular RTP materials. The resulting strategies for the development of high‐performance supramolecular RTP materials are discussed, aiming to satisfy the practical applications of RTP materials in biomedical science.This article is protected by copyright. All rights reserved

show abstract

Section: Cocrystalsmentioning

confidence: 99%

Section: Cocrystalsmentioning

confidence: 99%

See 1 more Smart Citation

Enhancing Purely Organic Room Temperature Phosphorescence via Supramolecular Self‐Assembly

Zheng,

Zhang,

Cai

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

show abstract

Recent Advances of Organic Cocrystals in Emerging Cutting‐Edge Properties and Applications

Wang,

Wang

et al. 2024

Angewandte Chemie

View full text Add to dashboard Cite

Organic cocrystals, representing one type of new functional materials, have gathered significant interest in various engineering areas. Owing to their diverse stacking modes, rich intermolecular interactions and abundant functional components, the physicochemical properties of organic cocrystals can be tailored to meet different requirements and exhibit novel characteristics. The past few years have witnessed the rapid development of organic cocrystals in both fundamental characteristics and various applications. Beyond the typical properties like ambipolarity, emission tuning ability, ferroelectricity, etc. that are previously well demonstrated, many novel impressive and cutting‐edge properties and applications of cocrystals also emerge and advance recently. Especially during the nearest five years, photothermal conversion, room‐temperature phosphorescence, thermally activated delay fluorescence, circularly polarized luminescence, organic solid‐state lasers, near‐infrared sensing, photocatalysis, batteries, and stimuli responses have been reported. In this minireview, these new properties are carefully summarized. Besides, some neoteric architecture and methodologies, such as host‐guest structures and machine learning‐based screening, are introduced. Finally, the potential future developments and expectations for organic cocrystals are discussed for further investigation on multiple functions and applications.

show abstract

Cocrystallization‐Induced Red Ultralong Organic Phosphorescence

Yin,

Xie,

Zhang

et al. 2024

Angewandte Chemie

View full text Add to dashboard Cite

Organic cocrystals formed through multicomponent self‐assembly have attracted significant interest owing to their clear structure and tunable optical properties. However, most cocrystal systems suffer from inefficient long‐wavelength emission and low phosphorescence efficiency due to strong non‐radiative processes governed by the energy gap law. Herein, an efficient long‐lived red afterglow is achieved using a pyrene (Py) cocrystal system incorporating a second component (NPYC4) with thermally activated delayed fluorescence (TADF) and ultralong organic phosphorescence (UOP) properties. The cocrystal (NPYC4‐Py) not only inherits the excellent luminescence of its monomeric counterparts, but also exhibits unique dual‐mode characteristics, including persistent TADF and UOP emission with a high quantum yield of 58% and a lifetime of 362 ms. The precise cocrystal stacking distinctly reveals that intermolecular interactions lock the cocrystal formation and weaken the intermolecular π‐π interactions between NPYC4 and Py, thereby stabilizing the excited triplet excitons. Furthermore, the favorable energy level of NPYC4 acts as a bridge, reducing the energy gap between the S1 and T1 states for Py, therefore activating its red phosphorescence from Py. This research provides direct insights into achieving efficient red UOP through co‐crystallization.

show abstract

Co-crystallization and Clustering Afforded Simultaneously Boosted Efficiency, Lifetime, and Color Tunability of Organic Afterglows

Cited by 12 publications

References 36 publications

Enhancing Purely Organic Room Temperature Phosphorescence via Supramolecular Self‐Assembly

Enhancing Purely Organic Room Temperature Phosphorescence via Supramolecular Self‐Assembly

Recent Advances of Organic Cocrystals in Emerging Cutting‐Edge Properties and Applications

Cocrystallization‐Induced Red Ultralong Organic Phosphorescence

Contact Info

Product

Resources

About