Cited by Intrinsic Multicolor Emissive Aliphatic Linear Polyphosphate Esters From the Charge‐Transfer‐Induced Enhanced Spatial Electronic Communication

Unconventional Luminescence Polymer with Color‐Tunability based on Solvent‐induced Electrostatic Potential Distribution of Fluorophore DOI

Yanyun He,

Yujie Qiao,

Zheng Li

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(47)

Published: Aug. 13, 2024

Abstract Tuning full‐color emission of polymers holds significant promise. However, preparing unconventional luminescence with color‐tunability in dilute solution and understanding the relationship between non‐covalent interactions luminescent behavior remains a great challenge. We report two emitters (P1 P2) incorporating tetracoordinate boron. The P1 non‐conjugated D‐π‐A structure, exhibited red delayed fluorescence at 645 nm quantum yield 9.15 % aggregates. Notably, wavelength can be tuned from 418 to 588 different solvent. Similarly, P2 also adjusted by manipulating solvent fluorophore. Experimental characterization theoretical calculations indicate that B←N bond electronic fluorophore significantly regulate equilibrium electrostatic potential (ESP) intramolecular O⋅⋅⋅O P1, thereby modulating its wavelength. Additionally, these showed excellent fluoride ions detection. This work provides new insights into complex effects intermolecular on properties.

Language: Английский

Citations

Multicolor Emissive Hyperbranched Polysilicophosphate Ester from n-π Interaction and Concentrated Negative Electrostatic Potential-Enhanced Spatial Electronic Communication DOI

Lihua Bai, Xiaoqian Ge, Shunsheng Zhao

et al.

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

Published: Jan. 10, 2025

Unconventional fluorescent polymers have attracted wide attention due to their excellent biocompatibility, facile preparation, and unique properties. However, developing high-performance revealing the emission mechanism are still challenging. Herein, explore relationship between chemical structures properties, four hyperbranched poly(silicophosphate) esters (HSiP0-HSiP3) were prepared. Increasing P═O(O)3:Si(O)3 ratios generated enhanced red fluorescence. Experimental theoretical calculation results showed that n-π interactions P═O O/N atoms promoted concentration of negative electrostatic potential spatial electronic communications, then decreased energy gap strong emission. Meanwhile, cluster functional groups a charge isolated groups, which further Additionally, these in bacterial imaging information encryption. Thus, this work provides an efficient method for long-wavelength materials while providing new insights into origin.

Language: Английский

Citations

Functional Heteroatom Substituted Hyperbranched Polymers: Recent Developments and Perspectives DOI

Yuanbo Zhang, Chaowei He, Huaping Xu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 13324 - 13341

Published: Feb. 20, 2025

Heteroatom-substituted hyperbranched polymers (HBPs) have emerged as a versatile class of functional materials, combining the structural merits architectures with unique chemical functionalities imparted by heteroatoms such boron, silicon, phosphorus, sulfur, selenium, and tellurium. These exhibit distinct physicochemical properties, including low viscosity, excellent solubility, high reactivity, tunable functionality, which position them promising candidates for diverse applications. This Review highlights recent advances in heteroatom substituted HBPs, categorizing from element group their (from Group III to VI, well transition rare-earth metals). The pivotal role modulating polymer properties is explored, key applications highlighted across four principal domains: fluorescent flame retardants, stimuli-responsive polymers, modifications. By integrating insights chemistry, materials science, interdisciplinary research, this underscores potential heteroatom-substituted HBPs addressing current material challenges.

Language: Английский

Citations

Nonconventional aggregation‐induced emission polysiloxanes: Structures, characteristics, and applications DOI

Yan Zhao, Lei Xu,

Yanyun He

et al.

Aggregate, Journal Year: 2023, Volume and Issue: 5(2)

Published: Dec. 8, 2023

Abstract Nonconventional luminescent materials have been rising stars in organic luminophores due to their intrinsic characteristics, including water‐solubility, biocompatibility, and environmental friendliness shown potential applications diverse fields. As an indispensable branch of nonconventional materials, polysiloxanes, which consist electron‐rich auxochromic groups, exhibited outstanding photophysical properties the unique silicon atoms. The flexible Si‐O bonds benefit aggregation, empty 3d orbitals Si atoms can generate coordination N → O Si, altering electron delocalization material improving purity. Herein, we review recent progress polysiloxanes with different topologies discuss challenges perspectives. With emphasis on driving force for aggregation mechanism tuned emissions, role played is highlighted. This may provide new insights into design expand further sensing, biomedicine, lighting devices, etc.

Language: Английский

Citations

Nonconventional Luminescent Piperazine‐Containing Hyperbranched Polysiloxanes with Pure n‐electron DOI

Yuqun Du, Yiwei Liu,

Jangwei Li

et al.

Small, Journal Year: 2023, Volume and Issue: 19(40)

Published: June 2, 2023

Nonconventional luminogens with high quantum yield (QY) possess very potential applications in various fields. However, the preparation of such remains a great challenge. Herein, first example piperazine-containing hyperbranched polysiloxane exhibiting blue and green fluorescence is reported under irradiation different excitation wavelength QY 20.9%. The density functional theory (DFT) calculations experimental results revealed that through-space conjugation (TSC) within clusters N O atoms produced via induction multiple intermolecular hydrogen bonds flexible SiO units, which accountable for fluorescence. Meanwhile, introduction rigid piperazine units not only rigidifies conformation, but also enhances TSC. In addition, both P1 P2 shows concentration-, excitation-, solvent-dependent emission, especially exhibits significant pH-dependent emission obtains an ultrahigh 82.6% at pH 5. synthetic show excellent detection Fe3+ Co2+ , information encryption, fluorescent film. This study provides novel strategy to rationally design high-efficiency nonconventional luminogens.

Language: Английский

Citations

Tunable Red Clusteroluminescence Polymers Prepared by a Simple Heating Process DOI

Xiang Chen, Chenxi Hu, Yang Wang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(19), P. 23824 - 23833

Published: May 5, 2023

Clusteroluminescence (CL) has drawn much attention in recent years. However, the design of red emission clusteroluminogens (CLgens) with tunable CL is still its infancy. Herein, we report a simple heating process to prepare poly(maleic anhydride-alt-vinyl acetate) (PMV) derivatives maximum wavelength between 620 and 675 nm. First, above glass transition temperature (Tg) would promote movement polymer chains facilitate formation clusters both solid solution states. Then, beyond decomposition at which vinyl acetate converts into C═C favorable new large through-space conjugation among subgroups chains. Their synergistic effects realize adjustable higher quantum yield polymers. Additionally, low-cost eco-friendly core-shell PMV particles are prepared as agricultural light conversion agents exhibit great compatibility polyethylene.

Language: Английский

Citations

Branched Copolymers with Tunable Clusteroluminescence in High Quantum Yield DOI

Zixuan Zhou, Xiang Chen, Yang Wang

et al.

ACS Macro Letters, Journal Year: 2023, Volume and Issue: 12(11), P. 1523 - 1529

Published: Oct. 27, 2023

A novel type of fluorescence without large conjugated structures called clusteroluminescence (CL) has attracted a great deal attention in recent years. Despite its many advantages, the emerging CL still encounters difficulties low quantum yield (QY) and preliminary mechanisms. In this work, branched structure was introduced into poly(maleic anhydride-alt-vinyl acetate) by chain transfer monomer. The emission wavelength copolymers is red-shifted with increase branching degree, absolute QY solids can reach up to 29.87%. Further characterizations reveal that improve flexibility polymer chains, thereby promoting intrachain interactions subgroups. Furthermore, case anhydride copolymers, equilibrium between nonradiative transitions holds crucial significance determining QY. This endeavor not only offers new insights mechanism but also presents approach surmount thus broadening horizons CLgens unexplored domains.

Language: Английский

Citations

Tunable Cluster Luminescence and High Quantum Yield in Amine-Modified Maleic Anhydride Polymers DOI

Weida Zhu,

Xiang Chen, Yang Wang

et al.

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

Published: Jan. 19, 2025

Cluster luminescent materials (CLgens) with nonconjugated structures have attracted considerable attention. However, their low quantum yield and limited emission wavelengths, which are confined to the blue-green spectrum, continue restrict applicability. In this study, maleic anhydride polymer chains were modified N-tristyrylene-1,2-diamine (TPM-NH2), creating a secondary donor–acceptor structure through freely rotatable phenyl groups amino–anhydride interactions. This modification facilitated formation of charge transfer (CT) states strengthened through-space interaction (TSI), resulting in remarkable red shift wavelength from 400 640 nm. The flexible ethyl chain acted as bridging unit within framework, enhancing (TSCT) elevating (QY) 28.28%. research offers strategy for improving QY copolymers demonstrates potential controllable thereby broadening application domains, including light-conversion agricultural films.

Language: Английский

Citations

Multi‐Stimulus Responsive Nonconventional Fluorescent Supramolecular Polymeric Material DOI

Wentao Hao,

Can Ke,

X. PAN

et al.

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 20, 2025

Abstract Fluorescent supramolecular materials have attracted a lot of attention over the past few decades. However, those can respond to multiple stimuli are not often reported, especially for nonconventional fluorescent materials. Here, material is reported that temperature/electrical heating, humidity, volatile acids/organic amines, and mechanical strain. This prepared by physical mixing oligomeric polyethyleneimine (o‐PEI) polyacrylic acid (o‐PAA). Although they almost non‐fluorescent, their combination produces bright fluorescence, emission bands shift longer wavelengths as amount o‐PAA increases. Calculations based on Density Functional Theory (DFT) show there strong noncovalent interactions between o‐PEI o‐PAA, resulting in through‐space conjugation cluster‐triggered emission. By studying relationship intensity, temperature, molecular motion, dependence intensity relaxation time established, which will provide insight into luminescence origin In addition, this shows good self‐healing ability. The luminescence, responsiveness self‐reparability all related but reversible bonds link o‐PAA. work only highlights value polymers, also enriches research

Language: Английский

Citations

Oligomeric Polysiloxanes with Tunable Emission Colors from Blue to Yellow DOI

Zhikang Yang,

Yushan Du,

Qingwen Li

et al.

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

Published: Feb. 27, 2025

Language: Английский

Citations