Isomeric Engineering of Organic Luminophores for Multicolor Room Temperature Phosphorescence Including Red Afterglow

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 8, 2024

Abstract Manipulating and optimizing the room temperature phosphorescence (RTP) behavior of organic luminophores is highly desirable for exploring their extensive potential applications. However, achieving tailored precise control over RTP emission colors remains a challenging task. Herein, three regioisomers, namely o ‐Br , m p ‐Br, are developed by directly bonding nitrogen atom commercial carbazole sulfur sulfonylbenzene group. This design not only features bromine substitution at different positions but also leads to formation N─S═O resonance linkages. With variation in position from ortho para color changes yellow red. Experimental investigations theoretical calculations demonstrate that this arises modulation contributions canonical forms N─S═O, which can be attributed regioisomerization atoms fine‐tuning intra‐ intermolecular interactions. Additionally, vitro cell imaging successfully realized employing red nanoparticles prepared luminophore. study reveals simple effective approach customizing through integration isomerization control.

Language: Английский

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A clusteroluminescent supramolecular polymer network constructed by pillararene and its application in information encryption

Aggregate, Journal Year: 2024, Volume and Issue: unknown

Published: June 14, 2024

Abstract Clusterization‐triggered emissive (CTE) materials have attracted great attention in recent years. The regulation of the emission property with CTE through supramolecular interactions is an excellent strategy for construction smart fluorescent materials. In this work, we prepared a regulatable polymer network properties pillararene‐based host−guest interactions. pillar[5]arene‐grafted poly(methyl methacrylate) (PMMA) showed classic character. After adding Brooker's merocyanine‐grafted to solution pillar[5]arene‐containing PMMA, gel formed by between pillararene and merocyanine guest. This brighter fluorescence than PMMA solid state. addition, can be further regulated pH conditions. acid, merocyanine‐containing guest was protonated, changed protonated pillararene. Interestingly, quenched when turned into network. base, convert back original network, along recovery fluorescence. Therefore, successfully realized Furthermore, tailorable system applied as information encryption material.

Language: Английский

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Multifunctional Amino‐Boranes Isomer Room‐Temperature Phosphorescent Material: Multi‐Substrate Multicolor Luminescence, Multi‐Level Anti‐Counterfeiting, Light‐Controlled Data Erasing/Writing, Data Logic Operation, and High Anti‐Laundry Detergent Performance

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 9, 2024

Abstract Significant advances are made in understanding the structure‐property relationship room‐temperature phosphorescence (RTP) materials. For example, intramolecular charge transfer (ICT) structural molecules based on electron donors(D) and acceptors(A) an efficient method to achieve RTP. However, ability precisely regulate singlet‐triplet energy gap (Δ E ST ) through molecular design control RTP emissions remains constrained. Herein, a group of 4BN‐NP 5BN‐NP isomers is reported with D A position isomerization, where exhibits photo‐induced orange afterglow phenomenon PMMA. Calculations show that spin‐orbit coupling (SOC) value greater compared intersystem crossing (ISC) channel more efficient, resulting smaller Δ for . This indicates short ICT conducive inducing emission. In addition, compound co‐doped red fluorescent dyes (RhB, Rh6G, RBNN) PMMA produces resonance (PRET), Surprisingly, light‐activated yellow can be obtained by attaching polymethyl methacrylate (PMMA) nylon filaments, its intensity does not diminish even when it immersed water containing detergent solution, thus expanding prospects application textile encryption.

Language: Английский

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Recent advance development in pillar[5]arene-based nanomaterials for cancer therapy

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

In this review, we summarize five different types of pillar[5]arene-based nanomaterials and their applications in chemotherapy, photodynamic therapy, photothermal multimodal synergistic therapy for tumors.

Language: Английский

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High-Efficiency, Long-Lived, Multicolor Tunable Pure Organic Materials for Dual Fluorescent-Phosphorescent Emission at Room Temperature

ACS Applied Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Currently, numerous afterglow materials often suffer from low phosphorescence quantum yields (ΦPh) and are confined to a singular luminescent color. In this study, we devised an approach by incorporating four distinct carbazole derivative guest molecules, featuring varying degrees of halogen substitution naphthalene group sites, into β-estradiol host molecules through high-temperature melt doping create exceptional organic composites. Remarkably, all exhibit characteristics, including prolonged lifetimes ultrahigh yields, with the pinnacle lifetime soaring 904.76 ms peak yield achieving remarkable 40.0%. Notably, even without heavy atom incorporation, phosphors managed attain ΦPh 18.0%, underscoring their unique properties. Furthermore, our experiments unveiled intriguing phenomenon: rather than single fluorescence or emission, these dual-emission encompassing both phosphorescence. The versatility in luminescence color manipulation was further demonstrated adjusting temperature excitation wavelength, offering unparalleled flexibility. Moreover, hues could be finely tuned number atoms, adding another layer tunability. Theoretical calculations provided valuable insights, showing that changes bromine substitutions positions significantly affect molecule's spin–orbit coupling constants nature its excited states. This understanding not only highlights molecular mechanisms behind observed properties but also provides roadmap for future design optimization such advanced materials.

Language: Английский

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Fine regulation of charge recombination for multi-color persistent luminescence

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Language: Английский

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Synthesis and Structure of Pillar[m]arene[1]phthalimide and Pillar[m]arene[1]naphthalimide

Organic Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

A series of monofunctionalized pillar[n]arenes skeleton macrocycles pillar[m]arene[1]phthalimide and pillar[m]arene[1]naphthalimide (m = 4–6) were synthesized successfully through fragment coupling cyclization in a one-pot reaction. The introduction pyromellitic diimide naphthalene units into the not only disturbs symmetry but also changes their self-assembly behavior solid state. This functionalization approach greatly expands structural diversity pillar[n]arenes.

Language: Английский

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Cyclization Boosted Long-Lived Polymeric Phosphorescence under Ambient Conditions

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

Published: March 4, 2025

Language: Английский

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An Aggregation-Induced Room Temperature Phosphorescence Probe for the Efficient and Selective Detection of Heparin and Protamine

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 29, 2025

Heparin is a vital macromolecule that regulates blood coagulation, while protamine an essential polypeptide clinically used to counteract heparin overdose. Detecting both and its antidote under physiological conditions crucial for biological clinical applications. This report introduces cucurbituril[8] (CB[8])-based phosphorescent probe their detection. The method employs nanoassembly induced phosphorescence switch-on mechanism sensing disassembly switch-off approach An arginine-rich guest forms supramolecular complex with heparin, enhancing secondary confinement enabling Conversely, sulfate, as stronger competitor disrupts the probe-heparin aggregates, leading emission quenching sensing. sensor demonstrated high selectivity in detecting analytes samples, such human serum urine. detection limits were determined be 61 82 ng/mL 10% HBS, respectively.

Language: Английский

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Highly Efficient Purely Organic Room‐Temperature Phosphorescence of Phenoselenazine Derivatives via a Synergistic Strategy of Intramolecular Locking and Steric Donor Substituent

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract Pure organic room‐temperature phosphorescent (RTP) materials have received significant attention recently because of their wide potential applications. However, RTP that lack host–guest interactions or hydrogen and ionic bonds typically exhibit limited phosphorescence quantum yields in amorphous films, owing to severe nonradiative decay transition‐forbidden triplet excitons caused by molecular rotations vibrations. Herein, a design strategy an intramolecular‐locking core (FPSeZPh) integrated with steric donor substituents (FPSeZPh‐TMCz) is proposed modify the parent phenoselenazine molecule (PSeZPh), which can not only restrict intramolecular motions suppress path excited states, but also effectively accelerate radiative process simultaneously. Benefiting from these synergistic effects, bright emission observed for both FPSeZPh FPSeZPh‐TMCz efficiencies up 83.3% doped polystyrene among best results emitters reported so far films. Moreover, are applied construct film sensors trace oxygen detection high quenching constants 5.5 × 10 −4 ppm −1 . These findings provide valuable insights into highly efficient metal‐free offer broad opportunities optical optoelectronic

Language: Английский

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