Hybridization of short-range and long-range charge transfer boosts room-temperature phosphorescence performance DOI Creative Commons

Tian-Miao Li,

Liyuan Hu, Xin Zou

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(31), P. 22763 - 22768

Published: Jan. 1, 2024

At present, mainstream room-temperature phosphorescence (RTP) emission relies on organic materials with long-range charge-transfer effects; therefore, exploring new forms of charge transfer to generate RTP is worth studying.

Language: Английский

Achieving Controllable Thermochromic Fluorescence via Synergistic Intramolecular Charge Transfer and Molecular Packing DOI
Weixu Feng,

Sumin Lu,

Yanhui Wu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

Thermochromic fluorescent materials (TFMs) have attracted significant attention due to their unique colorimetric response temperature. However, existing TFMs still suffer from weak stimulus responsiveness, broad temperature ranges, uncontrollable emission color changes, and low quantum yields. In this study, we address these issues by designing synthesizing three diketone-boron complexes with distinct wavelengths (NWPU-(2-4)). Utilizing a molecular engineering strategy manipulate intramolecular charge transfer transitions packing modes, our synthesized exhibit efficient fluorescence in both solution solid states. Moreover, are highly sensitive environmental polarity. By incorporating compounds into thermosensitive matrices of long-chain alkanes, produced varied peak variation ranges. Notably, the TFM based on NWPU-4, owing its strong dense J-aggregate configuration, not only exhibits intense spanning deep red near-infrared spectrum but also displays remarkable 90 nm range thermochromic properties. Ultimately, it was successfully applied programmable, thermally controlled, multi-level information encryption.

Language: Английский

Citations

2
Stimulating Chiral Selective Expression of Room Temperature Phosphorescence for Chirality Recognition DOI Creative Commons
Zhisheng Gao,

Xin Yan,

Qi Jia

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(44)

Published: Oct. 8, 2024

Abstract Chiral recognition is crucial for applications in chiral purity assessment and biomedical fields. However, achieving through visible room temperature phosphorescence remains challenging. Here, two molecules, designated as host guest are synthesized, which possess similar structural configurations. A viable strategy involving a configuration‐dependent energy transfer process to enable selective expression proposed, thereby enabling host‐guest doping system. The similarity between facilitates efficient Dexter due the reduced spatial distance molecules. This mechanism significantly enhances intensity of red from molecule, characterized by an emission peak at 612 nm prolonged lifetime 32.7 ms. work elucidates chiral‐dependent transfer, demonstrating its potential selectively expressing recognition.

Language: Английский

Citations

2
Preparation of hyperbranched polysiloxane containing terminal amino group and research on their luminescence properties DOI
Yuan Jia, Juxiang Yang,

Mingyang Ma

et al.

Journal of Polymer Research, Journal Year: 2024, Volume and Issue: 31(7)

Published: July 1, 2024

Language: Английский

Citations

1
Cocrystallization‐Induced Red Ultralong Organic Phosphorescence DOI
Zheng Yin,

Zongliang Xie,

Xianhe Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 24, 2024

Abstract 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 low phosphorescence efficiency due strong non‐radiative processes governed by the energy gap law. Herein, an efficient long‐lived red afterglow is achieved using a pyrene (Py) system incorporating second component (NPYC4) with thermally activated delayed fluorescence (TADF) ultralong organic (UOP) The (NPYC4‐Py) not only inherits excellent luminescence of its monomeric counterparts, but also exhibits unique dual‐mode characteristics, including persistent TADF UOP high quantum yield 58 % lifetime 362 ms. precise stacking distinctly reveals that intermolecular interactions lock formation weaken π‐π between NPYC4 Py, thereby stabilizing excited triplet excitons. Furthermore, favorable level acts as bridge, reducing S 1 T states for therefore activating Py. This research provides direct insights into achieving co‐crystallization.

Language: Английский

Citations

1
Triarylmethanol Derivatives with Ultralong Organic Room‐Temperature Phosphorescence DOI
Jinwei Li,

Ruikang Duan,

Yanmei Zhu

et al.

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 29, 2024

Triphenylmethyl-based compounds such as rhodamines and fluoresceine representing an old well-known class of triphenylmethane dyes, are widely used in fluorescent labeling bioimaging. Inspired by ultralong room temperature phosphorescence triphenylphosphine derivatives, herein we report a methoxy substituted triarylmethanol ((4-methoxyphenyl)diphenylmethanol, LJW-1) exhibits (RTP) under ambient condition with afterglows about 7 seconds. Its multiple C-H ⋅ π intermolecular interactions, O hydrogen bond π-π interactions beneficial for forming rigid environment the aggregated state which is evidently important factor appearance excellent RTP. Different substituents on result different lifetimes varying from μs to 818 ms. The substituent effects derivatives provide efficient method design organic RTP materials may be enlightening research derivatives.

Language: Английский

Citations

1
Preparation of hyperbranched polysiloxane containing terminal amino group and research on their luminescence properties DOI Creative Commons
Yuan Jia, Juxiang Yang,

Mingyang Ma

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: March 28, 2024

Abstract In order to obtain a polymer with good biocompatibility and aggregation induced luminescence, amino group was introduced into hyperbranched polysiloxane (HBPSi) structure by one-step transesterification, two HBPSi containing terminal (HBPSi-NH2) were prepared. It worth noting that both of them exhibit luminescence characteristics. To further study the relationship between their intensities, molecular weight distribution these HBPSi-NH2 studied nuclear magnetic resonance spectroscopy (NMR), infrared (FTIR) gel permeation chromatography (GPC), properties prepared NH2-HBPSi characterized fluorescence (PL). The results showed intensity affected dispersion. high can emit strong fluorescence, in solvent (tetrahydrofuran, THF), dispersion leads weakest performance, while bad solvent, it lead weak strongest performance.

Language: Английский

Citations

0
Achieving Controllable Thermochromic Fluorescence via Synergistic Intramolecular Charge Transfer and Molecular Packing DOI
Weixu Feng,

Sumin Lu,

Yanhui Wu

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

Abstract Thermochromic fluorescent materials (TFMs) have attracted significant attention due to their unique colorimetric response temperature. However, existing TFMs still suffer from weak stimulus responsiveness, broad temperature ranges, uncontrollable emission color changes, and low quantum yields. In this study, we address these issues by designing synthesizing three diketone‐boron complexes with distinct wavelengths ( NWPU‐(2–4) ). Utilizing a molecular engineering strategy manipulate intramolecular charge transfer transitions packing modes, our synthesized exhibit efficient fluorescence in both solution solid states. Moreover, are highly sensitive environmental polarity. By incorporating compounds into thermosensitive matrices of long‐chain alkanes, produced varied peak variation ranges. Notably, the TFM based on NWPU‐4 , owing its strong dense J‐aggregate configuration, not only exhibits intense spanning deep red near‐infrared spectrum but also displays remarkable 90 nm range thermochromic properties. Ultimately, it was successfully applied programmable, thermally controlled, multi‐level information encryption.

Language: Английский

Citations

0
Cocrystallization‐Induced Red Ultralong Organic Phosphorescence DOI Open Access
Zheng Yin,

Zongliang Xie,

Xianhe Zhang

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 24, 2024

Abstract 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 low phosphorescence efficiency due strong non‐radiative processes governed by the energy gap law. Herein, an efficient long‐lived red afterglow is achieved using a pyrene (Py) system incorporating second component (NPYC4) with thermally activated delayed fluorescence (TADF) ultralong organic (UOP) The (NPYC4‐Py) not only inherits excellent luminescence of its monomeric counterparts, but also exhibits unique dual‐mode characteristics, including persistent TADF UOP high quantum yield 58 % lifetime 362 ms. precise stacking distinctly reveals that intermolecular interactions lock formation weaken π‐π between NPYC4 Py, thereby stabilizing excited triplet excitons. Furthermore, favorable level acts as bridge, reducing S 1 T states for therefore activating Py. This research provides direct insights into achieving co‐crystallization.

Language: Английский

Citations

0
Hybridization of short-range and long-range charge transfer boosts room-temperature phosphorescence performance DOI Creative Commons

Tian-Miao Li,

Liyuan Hu, Xin Zou

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(31), P. 22763 - 22768

Published: Jan. 1, 2024

At present, mainstream room-temperature phosphorescence (RTP) emission relies on organic materials with long-range charge-transfer effects; therefore, exploring new forms of charge transfer to generate RTP is worth studying.

Language: Английский

Citations

0