Nonaromatic Polymers with Tunable Clusteroluminescence and Long-Lived Room-Temperature Phosphorescence DOI
Yang Wang, Yulong Zhao, Xiang Chen

et al.

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

Published: Dec. 26, 2024

Organic room-temperature phosphorescence (RTP) materials have garnered significant attention for their potential applications in anticounterfeiting authentication and bioimaging, due to large Stokes shift prolonged lifetime. However, the traditional RTP often suffer from drawbacks such as a complex preparation process poor biocompatibility presence of aromatic structures. In this study, we present series nontraditional intrinsic clusteroluminescent that exhibit by introducing concerted interactions strong multiple ionic bonds hydrogen (H-bonds). A class poly(maleic anhydride-alt-vinyl acetate) (PMV) derivatives with emission are obtained hydrolysis PMV. On basis these experiments, anhydride-acrylamide) (PMA) were prepared maximum lifetime 442 ms quantum yield 21% utilizing bonding amide groups induced alcoholysis under alkaline conditions. The findings reveal strategic introduction promotes conformational rigidification, while robust H-bonds further restrict molecular motion, thereby minimizing nonradiative decay pathways leading efficient RTP. Information encryption humidity detection based on material been proven its unique sensitive water response properties.

Language: Английский

Through-Space Electron Effect Regulated Selective Expression of Ultralong Organic Room Temperature Phosphorescence and Photochromism DOI
Lin Han, Youshi Lan,

Xingda Zhang

et al.

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

Published: April 16, 2025

We report a through-space electron effect (TSEE) between two phosphorescent units that significantly modulates the selective expression of ultralong organic room-temperature phosphorescence (UORTP) and photochromism. A series molecules (DNapTr, DNapBNT, DNapFL, DNapPy), featuring connected by nonconjugated spacer, were synthesized. Our findings reveal both TSEE energy gap ΔE (defined as EPU2 - EPU1) lowest triplet levels (T1) play crucial roles in determining UORTP photochromic behavior PMMA films. NMR spectra molecular simulations confirm presence TSEE, with their strength ranked DNapPy < DNapFL DNapBNT TSEE. The DNap unit is governed where moderate inhibits radical cation formation, while strong promotes it. Consequently, DNapTr, exhibit tunable photochromism, whereas remains nonphotochromic. jointly influenced ΔE. For DNapTr (ΔE > 0), excitons are trapped via leading to from DNap. In slightly <0), directs PU2. ≪ enables Py. By leveraging tuning T1 PU2, we successfully modulated photochromism UORTP. This study provides strategy for designing intelligent materials.

Language: Английский

Citations

0
Emergent clusteroluminescence from nonemissive molecules DOI Creative Commons
Jianyu Zhang, Zuping Xiong, Haoke Zhang

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 25, 2025

Abstract Once considered the exclusive property of conjugated molecules, efficient and visible-light luminescence from non-conjugated nonemissive molecules in clustered state, known as clusteroluminescence (CL), has attracted much attention recently due to its special photophysical behaviors behind electronic interactions. This perspective discusses development CL phenomenon, followed by typical features, examples, mechanisms, potential applications materials, provide a comprehensive picture this emerging field. Starting with organic clusters, inorganic, metallic, hybrid clusters properties are also introduced, shift covalent interactions at molecular level non-covalent aggregate is invoked.

Language: Английский

Citations

0
Activating Electronic Delocalization: Through-Space Lone-Pair Interactions versus Hydrogen Bonding DOI
Zuping Xiong, Jianyu Zhang, Ziteng Zhang

et al.

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(9), P. 3941 - 3950

Published: July 26, 2024

It is still unclear how weak interactions specifically affect electronic structures. Here, we systematically reduce the number of N–H bonds within diarylmethane (DAM), precisely diminishing hydrogen (H-bonds). Contrary to widely reported result that H-bonds could enhance molecular brightness by promoting electron delocalization, DAMs lacking exhibit superior luminescence, compared with in both dilute solutions and solid states. indicated tend induce n-electron localization, preventing formation through-space lone-pair conjugation (n–n TSC). In addition, unlike studied π–π only existed aggregate state, n–n TSC can even stabilize conformation expressed solutions. Herein, not achieve bright white-light emissions nonconjugated small molecules but also reveal surprisingly competitive relationship between providing a new strategy for designing excellent optoelectronic materials via bridge.

Language: Английский

Citations

3
Multicolor emissive hyperbranched polysiloxanes from enhanced spatial electronic communication for security encryption and bacteria imaging DOI
Lihua Bai, Hengyu Li,

Jiyan Gao

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 156253 - 156253

Published: Sept. 1, 2024

Language: Английский

Citations

2
Weak Interaction-Based Organic Luminescent Materials DOI

Yizhuo Shen,

Kangwei Luo,

Qingyang Xu

et al.

Chinese Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 44(8), P. 2453 - 2453

Published: Jan. 1, 2024

Language: Английский

Citations

0
Luminescent Radical Polymers DOI
Ziteng Zhang, Jianyu Zhang, Jing Sun

et al.

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

Published: Oct. 30, 2024

Organic radicals are gaining significant interest in luminescent materials due to their unique properties, which present unprecedented opportunities for innovation across various fields, from display technology biomedical applications. However, addressing challenges related stability and low fluorescence efficiency is crucial unlocking full potential practical Polymerization has emerged as an effective strategy enhance intra- interchain through-space interactions, enabling the creation of stable with excellent processing multifunctional properties. This concept emphasizes strategic use polymerization designing synthesizing main-chain side-chain radical polymers. approach not only broadens scope but also improves luminescence properties photofunctional materials.

Language: Английский

Citations

0
Nonaromatic Polymers with Tunable Clusteroluminescence and Long-Lived Room-Temperature Phosphorescence DOI
Yang Wang, Yulong Zhao, Xiang Chen

et al.

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

Published: Dec. 26, 2024

Organic room-temperature phosphorescence (RTP) materials have garnered significant attention for their potential applications in anticounterfeiting authentication and bioimaging, due to large Stokes shift prolonged lifetime. However, the traditional RTP often suffer from drawbacks such as a complex preparation process poor biocompatibility presence of aromatic structures. In this study, we present series nontraditional intrinsic clusteroluminescent that exhibit by introducing concerted interactions strong multiple ionic bonds hydrogen (H-bonds). A class poly(maleic anhydride-alt-vinyl acetate) (PMV) derivatives with emission are obtained hydrolysis PMV. On basis these experiments, anhydride-acrylamide) (PMA) were prepared maximum lifetime 442 ms quantum yield 21% utilizing bonding amide groups induced alcoholysis under alkaline conditions. The findings reveal strategic introduction promotes conformational rigidification, while robust H-bonds further restrict molecular motion, thereby minimizing nonradiative decay pathways leading efficient RTP. Information encryption humidity detection based on material been proven its unique sensitive water response properties.

Language: Английский

Citations

0