ADVANCED FUNCTIONAL MATERIALS
·
2024
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IF 18.5
Liang He,Xueyan Nan,Peipei Wang,Zhizhou Liu,Tong Wang,Pengli Bai
The nonconventional polymer luminophores (NPLs) with white emission are scarce due to the challenges in regulating their clustering structures. In this work, polystyrene is employed to develop a new kind of broad-emitting clusteroluminescence (CL) through suitable cross-linking and sulfonation. The sulfonated porous poly(styrene-co-divinylbenzene) microspheres (SPDMs) exhibit broad emission spectra (400–700 nm) in the visible light region. Further characterization and theoretical calculations show that through-space conjugation (TSC) enhanced with high cross-linking and sulfonation degrees (SD) is the main factor affecting the luminescence of microspheres. Monodisperse SPDMs with a low fluorescence distribution (CV < 5%) across 13 flow channels. Additionally, SPDMs microspheres is employed to construct binary, Cu 2+ , and pH-responsive microarrays to encrypt and decode important information. Finally, SPDMs are developed for utilization as single-component white and warm white light-converting light emitting diodes (LEDs). These LEDs demonstrate Commission International de L’Eclairage (CIE) coordinates and correlate color temperatures (CCT) of (0.31, 0.321) and (0.383, 0.41), 6611 and 4100 K, respectively. Notably, the color rendering index (CRI) value for SPDMs-50-2 in white LED applications reaches an impressive 92. This study provides an economical, simple, and effective design strategy for developing NPLs with both monodispersity and broad emission.
研究领域:
材料科学
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光学
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化学
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DOI
高影响因子
Molecular Systems Design & Engineering
·
2018
·Vol. 3
·期 2
·364-375
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IF 0
Xiaohong Chen,Xundao Liu,Jianlong Lei,Li Xu,Zihao Zhao,Fahmeeda Kausar,Xinyue Xie,Xinyuan Zhu,Yongming Zhang,Wang Zhang Yuan
Nonconventional luminogens without remarkable conjugation have attracted significant attention due to their scientific and technical importance. Their emission mechanism, however, is still under debate. Recently, we proposed the clustering-triggered emission (CTE) mechanism, namely the clustering of nonconventional chromophores and subsequent electron cloud overlap (delocalization) together with simultaneous conformation rigidification, to rationalize the emission. To further check it, nonaromatic polyurethanes (PUs) bearing carbamate (NHCOO) groups were designed and synthesized. While being virtually nonemissive in dilute PU/DMF solutions, PUs are found to be highly emissive when concentrated or aggregated as powders and films. Furthermore, room-temperature phosphorescence (RTP) is detected from the solid powders and films. Clustering of NHCOO groups and electronic communications among carbonyl (CO) units, N and O atoms are accountable for the emission. Such stereoelectronic interactions were also corroborated by the liquid IR (LIR) measurement. In addition, the aggregates of PUs are also useful for explosive detection and cell imaging.
研究领域:
材料科学
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化学
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生物医学工程
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产品关联
DOI
ACS Applied Polymer Materials
·
2025
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IF 4.7
Zifei Ren,Jie Liu,Wei Wang,Yanshai Wang,Yang Li,Xuefei Leng
Nonisocyanate polyurethanes (NIPUs) synthesized via cyclic carbonates and amines offer a sustainable alternative but often suffer from low performance when derived entirely from biobased feedstocks. This work introduces high strength and recyclable fully biobased NIPUs using resveratrol (RE)-derived cyclic carbonate and magnolol-based quaternary cyclic carbonate (MAG-QCC) to cure with Priamine 1074. By introducing rigid aromatic and conjugated structures, resveratrol-based polyhydroxyurethanes (REPHUs) and magnolol-based polyhydroxyurethanes (MAGPHUs) achieved the highest tensile strength of 31.4 MPa and a break elongation of 161%. After thoroughly investigating the molecular structures of two polyhydroxyurethane (PHUs), it was found that the planar conjugated aromatic structure of resveratrol in REPHUs, characterized by dihedral angles of 179.78 and 179.90°, leads to superior tensile strength and higher Tg compared to MAGPHUs, which are influenced by magnolol’s distorted biphenyl configuration with a dihedral angle of 39.72°. Additionally, dynamic carbamate and hydroxyl bonds enable efficient physical remolding, retaining more than 83% of the original tensile strength after reprocessing. The PHU network can be chemically degraded by alcoholysis, enabling closed-loop recycling. Notably, these materials exhibit fluorescence due to carbamate-induced clusteroluminescence, with the fluorescence intensity remaining constant even under deformation, demonstrating the potential for anticounterfeiting applications. This work explores an environmentally friendly way to synthesize high strength, recyclable cross-linked NIPUs from biobased sources, which broadens their applications in fields such as elastomers, packaging, and anticounterfeiting.
研究领域:
高分子化学
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材料科学
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可持续发展
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绿色化学
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产品关联
DOI
高影响因子
Nature Communications
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2025
·Vol. 16
·期 1
·1-13
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IF 15.7
Zhang Jianyu,Xiong Zuping,Zhang Haoke,Tang Ben Zhong
Once considered the exclusive property of conjugated molecules, efficient and visible-light luminescence from non-conjugated and nonemissive molecules in the clustered state, known as clusteroluminescence (CL), has attracted much attention recently due to its special photophysical behaviors and behind electronic interactions. This perspective discusses the development of the CL phenomenon, followed by the typical photophysical features, examples, mechanisms, and potential applications of CL materials, to provide a comprehensive picture of this emerging field. Starting with organic clusters, inorganic, metallic, and hybrid clusters with CL properties are also introduced, and the perspective shift from covalent interactions at the molecular level to non-covalent interactions at the aggregate level is invoked.
研究领域:
化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
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2024
·Vol. 42
·期 5
·579-590
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IF 4.1
Li Xiao-Di,Li Shu-Sheng,Jiang Xu-Bao,Zhu Xiao-Li,Kong Xiang Zheng
Owing to their high significance in fundamental study and diverse applications, stimuli-responsive and fluorescent polymers, particularly those with cluster-triggered emission (CTE) featured by non-conjugated chromophores, have drawn tremendous attention in recent years. In this work, fluorescent and multi-responsive polysiloxane (FRPS) was synthesized by hydrolytic condensation polymerization of 3-aminopropyl methyl diethoxysilane (APMS) with 3-( N -isopropyl propionamide) iminopropyl methyl diethoxysilane (APMS-NIP), which was formed in situ through aza-Michael addition between APMS and N -isopropyl acrylamide. FRPS was not only highly sensitive to temperature, pH and CO 2 in water, but also showed an enhanced and stimuli-adjustable fluorescence emission. The effects of monomer feeding, pH and CO 2 on its lower critical solution temperature and fluorescent property were investigated. FRPS fluorescence emission was ascribed to CTE mechanism. In addition, FRPS was shown to be highly potential as physiological indicator for cell imaging, and for controlled release and trace detection of doxorubicin. This study provides therefore a type of stimuli-responsive and fluorescent material for potential applications in biomedical fields, and it is also of great significance for understanding of the fluorescence mechanism of polysiloxane-based stimuli-responsive polymers.
研究领域:
材料科学
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生物医学工程
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化学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 19
·2213545
·
IF 19
Yilei Wang,Hao Liu,Hui Xie,Shaobing Zhou
Wearable flexible electronics that are derived from hydrogels inevitably undergo dehydration, and the sensing performance is highly affected because the stretchability and conductivity weaken. Monitoring the water retention rate of hydrogels as they operate without dismantling the assembled sensing device is vital for evaluating sensing performances and intervening in a timely manner to address the problem. However, relevant research is still lacking. Herein, an autofluorescent hydrogel is engineered based on clusterization-triggered emission (CTE) for wearable strain-sensing electronics that can undergo self-visualizing dehydration. The fluorescence intensity of the CTE-type autofluorescent hydrogel depends on the aggregation level of molecule clusters that are dangled on the gel networks, which is dominated by the water retention rate of the hydrogel. Thus, the dehydration process can be reflected by the fluorescent images taken in a scenario of long-term strain-sensing. This strategy helps the operator evaluate the water retention rate of the hydrogel without removing it from the assembled electronics and then quickly address the problem. In addition, this strategy is also applicable for dehydration-tolerant systems, demonstrating the versatility of the autofluorescent hydrogel. Overall, the CTE-type autofluorescent hydrogel will promote the development of high-performance and smart wearable electronics.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2023
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IF 9.5
Xiang Chen,Chenxi Hu,Yang Wang,Ting Li,Jie Jiang,Jing Huang,Shibo Wang,Tianxi Liu,Weifu Dong,Jinliang Qiao
Clusteroluminescence (CL) has drawn much attention in recent years. However, the design of red emission clusteroluminogens (CLgens) with tunable CL is still in its infancy. Herein, we report a simple heating process to prepare red emission poly(maleic anhydride-alt-vinyl acetate) (PMV) derivatives with a tunable maximum emission wavelength between 620 and 675 nm. First, heating above the glass transition temperature (Tg) would promote the movement of polymer chains and facilitate the formation of clusters in both solid and solution states. Then, heating beyond the decomposition temperature at which vinyl acetate converts into C═C is favorable to the formation of new clusters and large through-space conjugation among subgroups in polymer chains. Their synergistic effects realize the adjustable emission wavelength and higher quantum yield of polymers. Additionally, low-cost and eco-friendly core–shell PMV particles are prepared as agricultural light conversion agents and exhibit great compatibility with polyethylene.
研究领域:
材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
Small
·
2025
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IF 12.1
Riliga Wu,Hongyu Dai,Weijiang Guan,Chao Lu
Clusteroluminescence (CL) clusters in the absence of aromatic or π-conjugated structures have emerged as a new family of luminescent materials due to their abundant sources and inherent biocompatibility. However, there is an inborn challenge in controlling the size of CL clusters from random aggregation of micrometers to ordered assembly of sub-10 nanometers. Such an inherent drawback significantly restricts their progress from theoretical research to practical applications. To address this obstacle, a novel approach using space-confined templates is proposed to synthesize CL clusters with tunable sizes. Space-confined templates with sizes of ≈2–6 nm are constructed to effectively confine non-aromatic molecules, yielding size-controllable and luminescence-tunable CL clusters. The versatility of this synthetic strategy is further proved by using non-conjugated molecules, such as L-valine and L-isoleucine. Finally, the potential applications of the synthesized CL clusters have been implemented in cell nucleus imaging owing to their sub-10 nm size and efficient luminescence. The success of this work not only offers a versatile space-confined approach to synthesize size-tunable CL clusters within sub-10 nm, but also opens new avenues for the deployment of CL clusters in advanced applications.
研究领域:
材料科学
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生物医学工程
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化学合成
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产品关联
DOI
PubMed
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
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2023
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IF 5.1
Liyang Zhao,Hongli Zhang,Gang Zou
Nonconventional luminogens, represented by clustering-triggered emission (CTE) materials, have attracted increasing attention owing to their unique intrinsic emission and promising applications. However, the influencing factors of clustering-triggered emission and gelation behavior remain poorly understood. Herein, a series of poly(thioether)s with different pendant groups were synthesized and their unique properties were studied. Owing to the similar molecular structure, all five poly(thioether)s exhibited visible photoluminescence , but the intensity varied when the pendant group or solvent changed, which could be attributed to different clustering degree between polymer chains. Moreover, poly(thioether)s with different pendant groups showed the diverse gelation behavior during polymerization process. The impact of pendant group on the clustering-triggered emission property and gelation behavior of poly(thioether) derivatives were investigated in detail, which might be of great fundamental value for the rational design of functional nonconventional luminogens for biological and medical applications.
研究领域:
材料科学
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生物医学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
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IF 5.1
Muye Yang,Zhengbin Wang,Lingli Zhang,Jingli Wang,Xin Li,Wenjie Zhang,Wei Zhao,Ge Shi,Yanjie He,Yuancheng Zhang,Xiaomeng Zhang,Peng Fu,Zhe Cui,Xinchang Pang,Minying Liu
Non-traditional intrinsic luminescent polymers (NTILPs) have shown great potential in the fields of bioimaging and anti-counterfeiting applications. However, the intrinsic luminescent mechanism in these polymers is still under debate, with clustering-triggered emission (CTE) theory being one of the most plausible explanations, yet further research is needed. In this work, starting from acylamination of tartaric acid, we synthesized a pair of chiral polyamides, PA6LAT and PA6DAT. Circular dichroism spectroscopy confirmed the opposite helical conformations of PA6LAT and PA6DAT, exhibiting pronounced aggregation chirality amplification behavior and demonstrating typical CTE characteristics. The solid-state powders of the polyamides showed finely tunable multicolor fluorescence under different excitation wavelengths. The presence of through-space conjugations in the polyamides was further confirmed through theoretical calculations, revealing the significance of amide clusters and oxygen clusters in their CTE behavior. Interestingly, changing the solvent from HFIP to DMSO enabled single emission behavior in polyamide solutions, with the emission peak precisely tunable from 430 nm to 485 nm. This solvent-dependent shift is attributed to the differential dissociation of amide and oxygen clusters in these two solvents, corresponding to the opposite optical rotation of the polyamides induced by the solvents. The fluorescent behavior in solvents also further confirmed the emission mechanism triggered by amide and oxygen clusters in PA6LAT and PA6DAT. This study deepens the understanding of the intrinsic luminescent mechanism of polyamides, reporting for the first time the precise tuning of NTILPs fluorescence behavior and the underlying mechanism through solvent-induced effects, contributing to a better understanding of the multicolor luminescent behavior of NTILPs.
研究领域:
材料科学
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光学
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化学
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
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IF 6.5
Jiahui Shen,Danqi Chen,Henghui Deng,Hong Zeng,Dandi Fang,Xusheng Huang,Chuangshuang Hu,Yonghui Zhou,Haiman Xu,Chaoqun Zhang
Non-isocyanate polyurethanes (NIPU) prepared from renewable resource have attracted much attention and are of great significance for achieving carbon neutrality targets. In this study, a novel carbonated linseed oil was synthesized via a coupling reaction between CO 2 and epoxidized linseed oil , followed by ring-opening polymerization with two bio-based diamines for preparation of fully renewable NIPU. The effects of different bio-based diamines and different molar ratio of cyclic carbonate groups to amine groups on the thermal-physical, mechanical, and chemical resistance properties of the NIPU films were investigated. These chromophore-free NIPU films demonstrated intense luminescence because of clusteroluminescence induced by the formation of urethane groups with restricted molecular movement. This work reports a simple, environmentally friendly strategy for the development of fully renewable NIPU, which could find potential applications in coatings, elastomers , luminescent materials , and other industries.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
MACROMOLECULES
·
2022
·
IF 6.057
Kang Liu,Pengbo Han,Shunfeng Yu,Xinjun Wu,Yueyi Tian,Qianhan Liu,Jinhui Wang,Mingming Zhang,Chuanzhuang Zhao
Stimuli-responsive light-emitting polymers (SRLEPs) have many promising applications. However, the synthesis of SRLEPs from nonconjugated and water-soluble monomers remains a challenge. Herein, for the first time, nonconjugated luminescent polymers with an upper critical solution temperature (UCST) in aqueous solution are reported. The polymer is synthesized through copolymerization of a strong hydrogen-donating monomer, acrylic acid (AAc), and a strong hydrogen-accepting monomer, N-vinylcaprolactam (NVCL). The polymer–polymer hydrogen-bonding rigidifies the chain conformation and enhances the clustering of the heteroatoms and carbonyl groups, resulting in an improved clusteroluminescence. Meanwhile, the polymer–polymer hydrogen bonding also brings in dynamic chain association that can be switched with temperature, yielding a UCST-type thermoresponsiveness in aqueous solution. This work demonstrates a novel and facile method of designing SRLEPs through tailoring the hydrogen bonds in the polymer. The properties of clusteroluminescence and thermoresponsiveness of the AAc–NVCL copolymers may render themselves with applications as temperature-sensitive biosensing.
研究领域:
聚合物科学
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材料科学
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化学
·
生物传感
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）