Encapsulation engineering of porous crystalline frameworks for delayed luminescence and circularly polarized luminescence

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(13), P. 6694 - 6734

Published: Jan. 1, 2024

Delayed luminescence (DF), including phosphorescence and thermally activated delayed fluorescence (TADF), circularly polarized (CPL) exhibit common broad application prospects in optoelectronic displays, biological imaging, encryption. Thus, the combination of is attracting increasing attention. The encapsulation guest emitters various host matrices to form host-guest systems has been demonstrated be an appealing strategy further enhance and/or modulate their luminescence. Compared with conventional liquid crystals, polymers, supramolecular matrices, porous crystalline frameworks (PCFs) metal-organic (MOFs), covalent-organic (COFs), zeolites hydrogen-bonded organic (HOFs) can not only overcome shortcomings such as flexibility disorder but also achieve ordered guests long-term stability chiral structures, providing new promising platforms for development DF CPL. In this review, we provide a comprehensive critical summary recent progress photochemistry

Language: Английский

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Room temperature phosphorescence materials based on small organic molecules: Design strategies and applications

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(3)

Published: July 23, 2024

Abstract Room‐temperature phosphorescence (RTP) materials have attracted significant attention due to their applications in various fields such as information storage and encryption, organic light‐emitting diode (OLED), sensing, lighting display, biological imaging, photodynamic therapy. Traditionally, RTP can be efficiently developed using inorganic systems with noble metals or rare earth elements. Recently, many efforts been devoted the development of based on small molecules. The strategies construct include hydrogen bonding, heavy atom effect, n –π* transitions, π–π stacking, donor–acceptor host–guest doping. Herein, we summarize recent examples molecules primarily focusing design properties. Moreover, promising OLED, well bio‐imaging phototherapy are discussed. challenges perspectives given provide inspiration toward future materials.

Language: Английский

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Scalable fabrication of red Room-Temperature phosphorescent materials through molecular doping strategy for versatile applications

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 492, P. 152419 - 152419

Published: May 20, 2024

Language: Английский

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Precise Control of Efficient Phosphorescence in Host–Guest Doping Systems via Dynamic Metal–Ligand Coordination

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: 16(2), P. 537 - 543

Published: Jan. 6, 2025

Organic room-temperature phosphorescent (RTP) materials have wide-ranging applications in anticounterfeiting, biodiagnostics, and optoelectronic devices due to their unique properties. However, it remains a challenge give organic RTP dynamic tunability satisfy the demands of various advanced applications. Herein, we propose an effective strategy precisely modulate performance by incorporating metal–ligand coordination within host–guest doped system. The phosphors bipyridine derivatives with excellent properties were into small-molecule host matrix. Halide salts system effectively tuning performance, including efficiency lifetime, through coordination. Notably, leveraging reversible feature coordination, multilevel information encryption, thermal development time-resolved high reversibility, is successfully demonstrated. work demonstrates that could serve as method for developing efficient tunable

Language: Английский

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Circularly Polarized Room-Temperature Phosphorescence from Dye-Doped Cholesteric Liquid Crystalline Polymer Networks

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 725 - 730

Published: Jan. 12, 2025

Circularly polarized luminescence (CPL) materials have drawn increasing attention for their potential applications in optical displays and chemo/biosensing. Nevertheless, the construction of circularly room-temperature phosphorescence (CPRTP) is still a significant challenge. In this work, four liquid crystalline polymer network films with RTP properties been fabricated via photopolymerization cholesteric liquid-crystalline mixtures containing different amounts commercially available dyes. The show yellow-green structural color, enhanced RTP, blue CPL, green CPRTP dissymmetry factors up to -0.90, quantum yields 14.8%, emission lifetimes 607 ms. Furthermore, prepared film pattern presents colors reflective, fluorescent, phosphorescent modes. This work not only provides deep understanding CPRTP, but also facile strategy fabricate patterns decoration anticounterfeiting applications.

Language: Английский

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Preparation of Multicolor Room-Temperature Phosphorescence Carbon Dots by Changing the Conjugation Degree of Precursors for Information Encryption

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 14425 - 14432

Published: Feb. 20, 2025

Room temperature phosphorescence (RTP) materials have attracted considerable attention, because of their outstanding properties and a wide array potential applications. However, achieving control over the emission color RTP still presents certain challenges. In this article, carbon dots (CDs) three distinct colors were synthesized through simple host-guest doping strategy. Blue CDs (B-CDs) obtained by using phenylboronic acid as guest phosphors B2O3 host protect matrix, an ultralong lifetime (up to 1.597 s). Under 254 nm light excitation, blue for 14 s B-CDs can be visually observed. By increasing conjugation degree precursor molecules introducing 4-(1-naphthyl) naphthalene-1-boronic pyren-1-ylboronic phosphors, green (G-CDs) red (R-CDs) obtained, respectively. Theoretical calculations band gap analyses suggest that larger conjugated structures reduce HOMO-LUMO energy level difference, thereby causing redshift in wavelength. Last, these multicolor composite applied information encryption.

Language: Английский

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Chiral cocrystals with circularly polarized persistent phosphorescence and large second harmonic generation

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 106114 - 106114

Published: Feb. 1, 2025

Language: Английский

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Organic Ionic Host–Guest Phosphor with Dual-Confined Nonradiation for Constructing Ultrahigh-Temperature X-ray Scintillator

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Scintillators with X-ray-excitable luminescence have attracted great attention in the fields of medical radiography, nondestructive inspection, and high-energy physics. However, thermal quenching significantly reduces radioluminescence efficiency, particularly for those phosphorescent scintillators promising radiation-induced triplet exciton utilization, ultimately limiting their applications high-temperature scenarios. Herein, we develop ultrahigh-temperature based on organic ionic host–guest phosphorescence systems unprecedented thermal-stable emissions up to 673 K. The guest phosphor features spin-vibronic coupling-assisted intersystem crossing, effectively transforming thermally activated delayed fluorescence overcoming inactivation excitons. Meanwhile, rigid host robust electrostatic interactions minimize both intrinsic extrinsic nonradiations excitons, so-called dual-confined nonradiation. These two mechanisms work synergistically, contributing highly efficient exciton-based a room-temperature efficiency 38.7% ultrahigh-temperature-resistant dual emissions. Such an innovative scintillator achieves impressively low X-ray detection limit 71.5 nGy s–1 remarkably bright photoluminescence (efficiency 80.4% at 483 K), enabling imaging.

Language: Английский

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Clusterization-triggered room-temperature phosphorescent synthetic polymeric materials

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 535, P. 216629 - 216629

Published: March 28, 2025

Language: Английский

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Near‐Infrared Organic Room Temperature Phosphorescent Probes Targeting Fibroblast Activation Protein for Surgical Navigation of Liver Cancer

Aggregate, Journal Year: 2025, Volume and Issue: unknown

Published: April 6, 2025

ABSTRACT Hepatectomy is a critical treatment for liver cancer, but achieving complete tumor removal remains challenging. The development of tumor‐targeting probes capable accurately identifying locations and providing real‐time intraoperative navigation significant clinical importance. We synthesize tumor‐targeted probe by conjugating fibroblast activation protein inhibitor (FAPI) with near‐infrared organic room temperature phosphorescence (RTP) material. then analyze its surgical performance in the cancer model imaging fresh patient‐derived samples. In vivo validation reveals that exhibits optimal intensity within 48 h (8.53 × 10 5 p s −1 cm −2 sr ) an average signal‐to‐noise ratio 16. could effectively identify FAP‐positive samples from patients. successful application phosphorescence‐guided surgery suggests RTP holds translational value serve as auxiliary tool cancer.

Language: Английский

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