Aromatic Amides: A Smart Backbone toward Isolated Ultralong Bright Blue-Phosphorescence in Confined Polymeric Films

Article Nanoscience & Nanotechnology

Multivalent Supramolecular Assembly Based on a Triphenylamine Derivative for Near-Infrared Lysosome Targeted Imaging

Jie Yu et al.

Summary: A multivalent supramolecular aggregate with near-infrared fluorescence emission was developed and successfully applied for lysosome targeted imaging.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Chemistry, Multidisciplinary

Highly Efficient Blue Phosphorescence from Pillar-Layer MOFs by Ligand Functionalization

Haohao Liu et al.

Summary: Room temperature phosphorescence (RTP) has been extensively researched, but developing highly efficient blue RTP materials with long-lived lifetimes is still a challenge. A feasible strategy of ligand functionalization was proposed using metal-organic framework (MOF) as a model, isolating chromophores with assistance of predefined co-ligands and restricting chromophores' motions through coordination and host-guest interactions, achieving highly efficient blue phosphorescence with long lifetimes.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Stepwise Energy Transfer: Near-Infrared Persistent Luminescence from Doped Polymeric Systems

Faxu Lin et al.

Summary: This study presents a universal strategy to combine infrared persistent luminescent materials with red and near-infrared dyes through stepwise Förster resonance energy transfer (FRET), solving the issue of inadequate spectral overlap.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Tunable Second-Level Room-Temperature Phosphorescence of Solid Supramolecules between Acrylamide-Phenylpyridium Copolymers and Cucurbit[7]uril

Wen-Wen Xu et al.

Summary: This study presents a series of solid supramolecules with tunable room-temperature phosphorescence, with P-CF3/CB[7] showing the longest lifetime. The ultralong multicolor phosphorescence energy transfer supramolecular assembly can be used in anti-counterfeiting, information encryption, and painting applications.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Multidisciplinary Sciences

Completely aqueous processable stimulus responsive organic room temperature phosphorescence materials with tunable afterglow color

Dan Li et al.

Summary: The authors report a stimulus-responsive room temperature phosphorescent material composed of arylboronic acid and poly(vinylalcohol), which has color tunable and processable properties. This material shows sensitivity to water and heat stimuli and can be adjusted in color by introducing other fluorescent dyes.

NATURE COMMUNICATIONS (2022)

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Review Chemistry, Multidisciplinary

Modulating the optical properties and functions of organic molecules through polymerization

Wenbo Wu et al.

Summary: Organic functional materials have broad applications in various fields, and their optical properties can be improved through simple polymerization. Polymerization can enhance properties such as spectral shift, photosensitization, two-photon absorption, photocatalytic efficiency, phosphorescence, delayed fluorescence, and emission. The opportunities for designing high performance optical materials using polymerization are promising.

MATERIALS HORIZONS (2022)

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Article Chemistry, Multidisciplinary

Unveiling the crucial contributions of electrostatic and dispersion interactions to the ultralong room-temperature phosphorescence of H-bond crosslinked poly(vinyl alcohol) films

Deliang Wang et al.

Summary: This study investigates the incorporation of organic phosphors into a PVA matrix to achieve room-temperature phosphorescent materials. It reveals that electrostatic and dispersion interactions play crucial roles in determining the ultralong RTP properties, shedding light on the nature of non-covalent interactions in doping PVA systems. Moreover, by simply modifying the active groups of organic phosphors, the researchers successfully achieve an ultralong RTP lifetime, providing new guiding principles for exploring amorphous organic RTP systems.

MATERIALS HORIZONS (2022)

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Review Chemistry, Multidisciplinary

Metal-Free Organic Phosphors toward Fast and Efficient Room-Temperature Phosphorescence

Wenhao Shao et al.

Summary: This Account summarizes important molecular design and matrix engineering strategies to tackle the challenges of low SOC efficiency and nonradiative decay in purely organic phosphors (POPs). SOC is mostly promoted by heavy atom effects and the El-Sayed rule, while engineering the matrices of POPs is critical to effectively suppress nonradiative decay. Future research can focus on molecular design descriptors, such as heavy atom oriented orbital angular momentum manipulation, to further enhance SOC efficiency in purely organic materials.

ACCOUNTS OF CHEMICAL RESEARCH (2022)

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Article Materials Science, Multidisciplinary

Broad-Band Visible-Light Excitable Room-Temperature Phosphorescence Via Polymer Site-Isolated Dye Aggregates

Xiancheng Nie et al.

Summary: Organic room-temperature phosphorescent (RTP) materials play an important role in optical imaging and sensing technologies. However, the excitation requirements and potential photo damage limit their practical applications. In this study, a new design concept using dihydroxy-functionalized naphthalenediimide (NDI) is demonstrated to achieve visible light absorption and near-infrared RTP. The resulting polymer NDI-PLA2/NDI-PCL2 exhibits long lifetimes and offers potential for expanding to other molecular RTP systems.

ADVANCED OPTICAL MATERIALS (2022)

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Review Physics, Applied

Molecular physics of persistent room temperature phosphorescence and long-lived triplet excitons

Shuzo Hirata

Summary: This paper reviews recent advances in understanding the photophysical processes of persistent room temperature phosphorescence (pRTP), introduces techniques for measuring physical parameters related to pRTP, and discusses the impact of molecular backbone on the characteristics of pRTP.

APPLIED PHYSICS REVIEWS (2022)

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Article Chemistry, Multidisciplinary

Multi-Mode and Dynamic Persistent Luminescence from Metal Cytosine Halides through Balancing Excited-State Proton Transfer

Guowei Xiao et al.

Summary: This study reports an excitation-dependent persistent luminescence in a reverse mode for smart optical materials through tailoring the excited-state proton transfer process. The approach enables highly tuned phosphorescence and delayed fluorescence emission colors, which can be adjusted from green to blue or cyan to yellow-green. Additionally, the construction of optical waveguides with triple color conversion on the single crystal level provides a new strategy for multi-dimensional information encryption and optical logic gate applications.

ADVANCED SCIENCE (2022)

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Article Multidisciplinary Sciences

Stimulus-responsive room temperature phosphorescence materials with full-color tunability from pure organic amorphous polymers

Dan Li et al.

Summary: The strategy of achieving stimulus-responsive ultralong room temperature phosphorescence (RTP) with color-tunable emissions using water as solvent in the preparation process is reported. By covalent linkage of arylboronic acids with different IC conjugations and polymer matrix of polyvinyl alcohol, the polymer films exhibit outstanding RTP performance. The RTP property of these materials is sensitive to water and heat stimuli. Furthermore, they have been successfully applied in multilevel information encryption and multicolor paper and ink.

SCIENCE ADVANCES (2022)

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Article Multidisciplinary Sciences

Ultralong organic phosphorescence from isolated molecules with repulsive interactions for multifunctional applications

Xiaokang Yao et al.

Summary: The introduction of carboxyl groups into organic phosphors enables the formation of intense repulsive interactions between isolated molecules and the matrix, leading to bright organic phosphorescence in films. This finding expands the potential applications of ultralong organic phosphorescence materials.

NATURE COMMUNICATIONS (2022)

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Article Chemistry, Multidisciplinary

Aggregation-induced delayed fluorescence molecules with mechanochromic behaviors for efficient blue organic light-emitting diodes

Junchu He et al.

Summary: This study developed two blue luminescent molecules with aggregation-induced delayed fluorescence (AIDF) characteristics and high photoluminescence quantum yields. Efficient blue organic light-emitting diodes were fabricated based on these molecules. The molecules exhibit mechanochromic luminescence behavior and have good application potentials in various optical and electronic devices.

CELL REPORTS PHYSICAL SCIENCE (2022)

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Review Chemistry, Multidisciplinary

From aggregation-induced emission to organic room temperature phosphorescence through suppression of molecular vibration

Tongyue Wu et al.

Summary: With the rapid development of aggregation-induced emission (AIE), the principles of AIE have also been shown to stimulate the design of organic room temperature phosphorescence (RTP). Suppression of molecular vibration through various noncovalent interactions and physical space confinement is an effective strategy for achieving RTP. This review summarizes different processes for RTP, including classical and non-classical host-guest interactions, polymer network facilitation, and RTP in small molecules and simple ions. A perspective on future trends in RTP development is also provided.

CELL REPORTS PHYSICAL SCIENCE (2022)

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Review Chemistry, Multidisciplinary

Room-temperature phosphorescence from metal-free polymer-based materials

Yanxiang Gong et al.

Summary: This review summarizes the latest progress in polymer-based room-temperature phosphorescence (RTP) materials and elaborates on two strategies, chemical bonding and physical blending. Challenges and perspectives are proposed for improving RTP performance and developing new applications, particularly in amorphous polymers.

CELL REPORTS PHYSICAL SCIENCE (2022)

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Article Chemistry, Multidisciplinary

Boosting Wide-Range Tunable Long-Afterglow in 1D Metal-Organic Halide Micro/Nanocrystals for Space/Time-Resolved Information Photonics

Bo Zhou et al.

Summary: This study developed new types of metal-organic halide micro/nanocrystals with tunable afterglow properties, achieved by rational control over both ultralong-lived room-temperature phosphorescence and thermally activated delayed fluorescence. This opens up possibilities for achieving ultralong afterglow emission in low-dimensional micro/nanostructures.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Stimuli-Responsive Deep-Blue Organic Ultralong Phosphorescence with Lifetime over 5 s for Reversible Water-Jet Anti-Counterfeiting Printing

Jingyu Zhang et al.

Summary: By doping phosphor into cyanuric acid host, highly efficient, ultralong-lived, and deep-blue OURTP materials were successfully prepared. These host-guest OURTP composites with abundant and tunable H-bond network are sensitive to water, significantly enhancing the OURTP quantum yield, and can be used for anti-counterfeiting paper for water-jet printing.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Activating Room-Temperature Phosphorescence of Organic Luminophores via External Heavy-Atom Effect and Rigidity of Ionic Polymer Matrix**

Zi-Ang Yan et al.

Summary: This study introduces a new general strategy for designing and developing pure organic RTP materials starting from an existing library of organic dyes without the need for complicated chemical synthesis.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Physical

Confining isolated chromophores for highly efficient blue phosphorescence

Wenpeng Ye et al.

Summary: The study demonstrates a chemical strategy for achieving high-performance blue phosphorescence by confining isolated chromophores in ionic crystals, forming high-density ionic bonds between the cations of ionic crystals and the carboxylic acid groups of the chromophores to create a segregated molecular arrangement with negligible inter-chromophore interactions.

NATURE MATERIALS (2021)

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Article Materials Science, Multidisciplinary

Deep-Blue Ultralong Room-Temperature Phosphorescence from Halogen-Free Organic Materials through Cage Effect for Various Applications

Yusheng Zhou et al.

Summary: The concept of cage effect is proposed to promote room-temperature phosphorescence (RTP) property of organic materials, leading to the design and synthesis of a novel phosphor with high performances. The strong cage effect demonstrated in the study effectively alleviates molecular motion of chromophores, simultaneously enhancing their RTP efficiency and lifetime, which could have potential applications in temperature measurements, thermal transition detection, and UV sensing.

ADVANCED OPTICAL MATERIALS (2021)

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Article Materials Science, Multidisciplinary

A highly efficient purely organic room-temperature phosphorescence film based on a selenium-containing emitter for sensitive oxygen detection

Shuai Wang et al.

Summary: In this study, a donor-acceptor type RTP molecule (SeX-CzPh) was designed and synthesized, which showed high phosphorescence efficiency in film states at room temperature. The heavy selenium atom played a crucial role in achieving high phosphorescence quantum yields. Additionally, the SeX-CzPh-based oxygen film sensor exhibited excellent performance with a wide detection range, high sensitivity, and low detection limit.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Chemistry, Multidisciplinary