Aggregate (Hoboken, N.J.)最新文献

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Methyl group tuning crystalline covalent triazine frameworks towards organogel 甲基调谐结晶共价三嗪框架的有机凝胶
IF 13.9
Aggregate (Hoboken, N.J.) Pub Date : 2024-10-16 DOI: 10.1002/agt2.687
Lingqi Huang, Xinfang Cui, Fei Zhang, Wenqing He, Jingfei Li, Zhihang An, Ziyang Chang, Shengwei Xiao, Wenrui Zheng, Shangru Zhai, Heyang Liu, Wei Feng
{"title":"Methyl group tuning crystalline covalent triazine frameworks towards organogel","authors":"Lingqi Huang,&nbsp;Xinfang Cui,&nbsp;Fei Zhang,&nbsp;Wenqing He,&nbsp;Jingfei Li,&nbsp;Zhihang An,&nbsp;Ziyang Chang,&nbsp;Shengwei Xiao,&nbsp;Wenrui Zheng,&nbsp;Shangru Zhai,&nbsp;Heyang Liu,&nbsp;Wei Feng","doi":"10.1002/agt2.687","DOIUrl":"https://doi.org/10.1002/agt2.687","url":null,"abstract":"<p>Covalent triazine frameworks (CTFs), known as highly conjugated layered solids, have garnered significant interest due to their distinctive structural and property characteristics. However, the exfoliation of CTF solids towards nanoCTFs in high yields is currently inadequate and inefficient, limiting their utility. This study presents the design and synthesis of CTFs containing non-crystalline regions and their random stacks using a methyl-containing nitrile monomer. Incorporating in-plane methyl groups enhances the polarity of CTFs and disrupts layered interactions, facilitating smooth exfoliation under competing solvent-layer interactions and producing nanocolloids in dilute dispersions. Furthermore, CTFs can rapidly disperse in DMF at a high concentration, enabling the formation of CTF organogel for the first time. Additionally, the designed CTF nanocolloids allow for the first simple physical modification of carbon nanotubes. The assembly, associated with conjugated features, enables the fabrication of CTF/carbon nanotube organogel.</p>","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":"6 2","pages":""},"PeriodicalIF":13.9,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.687","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Au···I coinage bonds: Boosting photoluminescence efficiency and solid-state molecular motion Au···I铸币键:提高光致发光效率和固态分子运动
IF 13.9
Aggregate (Hoboken, N.J.) Pub Date : 2024-10-16 DOI: 10.1002/agt2.686
Xueqian Zhao, Junyi Gong, Zikang Li, Herman H. Y. Sung, Ian D. Williams, Jacky W. Y. Lam, Zheng Zhao, Ben Zhong Tang, Wai-Yeung Wong, Linli Xu
{"title":"Au···I coinage bonds: Boosting photoluminescence efficiency and solid-state molecular motion","authors":"Xueqian Zhao,&nbsp;Junyi Gong,&nbsp;Zikang Li,&nbsp;Herman H. Y. Sung,&nbsp;Ian D. Williams,&nbsp;Jacky W. Y. Lam,&nbsp;Zheng Zhao,&nbsp;Ben Zhong Tang,&nbsp;Wai-Yeung Wong,&nbsp;Linli Xu","doi":"10.1002/agt2.686","DOIUrl":"https://doi.org/10.1002/agt2.686","url":null,"abstract":"<p>Coinage bonds, a type of noncovalent interaction, occur between group 11 elements (Au, Ag, and Cu) with electron donor groups. Despite theoretical validation, empirical evidence remains limited. In this study, an aggregation-induced emission (AIE)-active Au(I) complex, <b>ITCPAu</b>, which exhibits Au···I coinage bonds, was revealed based on the single-crystal X-ray diffraction and theoretical calculations. Further examination of the luminescence properties of the <b>ITCPAu</b> revealed multiswitchable behavior, including mechanochromism and thermochromism. Nearly pure white-light emission was achieved with Commission Internationale de L'Eclairage (CIE) 1931 chromaticity coordinates of (0.30, 0.31) by grinding the green-emissive <b>ITCPAu</b> monomer crystals. Moreover, visualization and manipulation of solid-state molecular motion (SSMM) in the yellow-emissive <b>ITCPAu</b> dimer crystals, driven by the robust Au···I coinage bonds, were revealed through a combination of crystal engineering and luminescent properties. Furthermore, to support the robust Au···I coinage bonds, a versatile carrier for small solvent molecules in crystal lattices was developed for uptake and release. Our findings provide experimental and theoretical evidence for Au···I coinage bonds, highlighting their ability to boost photoluminescence quantum yield (PLQY) and trigger SSMM, emphasizing their potential in developing smart materials with stimuli-responsive properties.</p>","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":"6 2","pages":""},"PeriodicalIF":13.9,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.686","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Copper-infused zinc porphyrin supramolecular polymersomes for triple synergistic combat against wound bacterial biofilm infections 铜注入锌卟啉超分子聚合体三重协同对抗伤口细菌生物膜感染
IF 13.9
Aggregate (Hoboken, N.J.) Pub Date : 2024-10-15 DOI: 10.1002/agt2.685
Lingkai Yang, Ying Du, Fuli Yin, Haojie Shan, Yannan Liu, Yongfeng Zhou, Xiaowei Yu
{"title":"Copper-infused zinc porphyrin supramolecular polymersomes for triple synergistic combat against wound bacterial biofilm infections","authors":"Lingkai Yang,&nbsp;Ying Du,&nbsp;Fuli Yin,&nbsp;Haojie Shan,&nbsp;Yannan Liu,&nbsp;Yongfeng Zhou,&nbsp;Xiaowei Yu","doi":"10.1002/agt2.685","DOIUrl":"https://doi.org/10.1002/agt2.685","url":null,"abstract":"<p>Bacterial biofilm infections (BBI) on wound surfaces and implants pose a significant clinical challenge due to the impermeable nature of biofilms and obstacles in tissue repair. Traditional photothermal therapy (PTT) or chemodynamic therapy (CDT), whether used alone or in combination, often causes damage to surrounding normal tissues from high operating temperatures or elevated levels of reactive oxygen species, leading to unsatisfactory anti-biofilm effects. This study introduces a novel copper ions loaded zinc porphyrin polymer vesicle (Cu-PPS) that employs a triple synergistic approach involving PTT, CDT, and bacterial cuproptosis-like death (BCD). Cu-PPS exhibits exceptional photothermal efficiency of 51.06%, promoting the release of copper ions under photothermal stimulation, enhancing CDT and BCD effectiveness, and facilitating mature biofilm clearance and tissue repair. This approach achieves a bactericidal rate exceeding 99% and an anti-biofilm rate of 93.32% in vitro and also excellent efficacy in treating BBI in vivo. This study presents an innovative therapeutic strategy for combating biofilm infections, addressing the challenges encountered in the clinical management of BBI.</p>","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":"6 2","pages":""},"PeriodicalIF":13.9,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.685","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Finely tunable NIR-II organic scaffolds for fluorescence/photoacoustic duplex imaging–guided noninvasive photothermal therapy of glioblastoma 精细可调NIR-II有机支架用于荧光/光声双成像引导胶质母细胞瘤的无创光热治疗
IF 13.9
Aggregate (Hoboken, N.J.) Pub Date : 2024-10-11 DOI: 10.1002/agt2.680
Yufei Song, Xingyu Tong, Yujie Han, Qi-Wei Zhang
{"title":"Finely tunable NIR-II organic scaffolds for fluorescence/photoacoustic duplex imaging–guided noninvasive photothermal therapy of glioblastoma","authors":"Yufei Song,&nbsp;Xingyu Tong,&nbsp;Yujie Han,&nbsp;Qi-Wei Zhang","doi":"10.1002/agt2.680","DOIUrl":"https://doi.org/10.1002/agt2.680","url":null,"abstract":"<p>Organic agents possessing NIR-II and photoacoustic duplex imaging capabilities, coupled with high-efficiency photothermal conversion, offer significant potential for noninvasive and precise phototheranostics of glioblastoma, which is further augmented when these agents can concurrently exhibit tumor targeting and blood–brain barrier (BBB) permeability. This study reports a series of finely tunable NIR-II molecular luminophores based on the aza-BODIPY scaffold, featuring unique twisted and rotatable structures. They are further constructed to folate-decorated polymeric nanoparticles, exhibiting remarkable NIR-II/photoacoustic imaging performance and superior photothermal conversion efficiency (49.7%). Folate modification enables tumor targeting and BBB permeability through receptor-mediated transcytosis, allowing for precise and efficient phototherapy in 4T1-/glioblastoma-bearing mice after a single intravenous injection and irradiation. This study presents a rational molecular engineering approach and a versatile structural scaffold for designing NIR-II emitters with tailored photophysical properties and desirable phototherapeutic efficacy, thereby offering novel perspectives on the development of advanced depth imaging probes and brain tumor therapeutics.</p>","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":"6 2","pages":""},"PeriodicalIF":13.9,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.680","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Atomically precise Cu32 nanoclusters with selenide doping: Synthesis, bonding, and catalysis 原子精密Cu32纳米团簇与硒化物掺杂:合成,键合,和催化
IF 13.9
Aggregate (Hoboken, N.J.) Pub Date : 2024-10-11 DOI: 10.1002/agt2.679
Rong Huo, Rui Ren, Lin Wang, Qinghua Xu, Bingzheng Yan, Jiangwei Zhang, Qingxiang Guo, Zongjie Guan, Hui Shen, Nanfeng Zheng
{"title":"Atomically precise Cu32 nanoclusters with selenide doping: Synthesis, bonding, and catalysis","authors":"Rong Huo,&nbsp;Rui Ren,&nbsp;Lin Wang,&nbsp;Qinghua Xu,&nbsp;Bingzheng Yan,&nbsp;Jiangwei Zhang,&nbsp;Qingxiang Guo,&nbsp;Zongjie Guan,&nbsp;Hui Shen,&nbsp;Nanfeng Zheng","doi":"10.1002/agt2.679","DOIUrl":"https://doi.org/10.1002/agt2.679","url":null,"abstract":"<p>Copper nanoclusters with stable compositions and precise structures have long been sought after, as they possess properties that are absent in gold and silver counterparts. However, the creation of copper nanoclusters with novel compositions, structures, and functionalities remains largely unexplored in the literature. In this study, we demonstrate that selenide doping is an effective method for fabricating stable copper nanostructures through controlled synthesis and structure determination of a copper–selenide nanocluster. The nanocluster of [Cu<sub>32</sub>Se<sub>7</sub>(BnSe)<sub>18</sub>(PPh<sub>3</sub>)<sub>6</sub>]<sup>+</sup> (denoted as Cu<sub>32</sub>Se<sub>7</sub>, Bn is benzyl) has been prepared by reducing copper salts in the presence of organic diselenides. The atomic structure of the Cu<sub>32</sub>Se<sub>7</sub> cluster, accurately determined through single-crystal X-ray diffraction, reveals a core–shell arrangement of Cu<sub>20</sub>Se<sub>7</sub>@Cu<sub>12</sub>(BnSe)<sub>18</sub>(PPh<sub>3</sub>)<sub>6</sub>, where Se<sup>2−</sup> anions are well dispersed in the Cu<sub>20</sub> framework. Notably, this cluster represents a rare example of copper–selenide semiconductor nanoclusters. Experimental and theoretical analysis shows strong interactions between Se ligands and metal atoms, resulting in high stability of the Cu<sub>32</sub>Se<sub>7</sub> cluster. Furthermore, the cluster exhibits excellent catalytic performance in the hydroboration reaction of alkynes, producing a range of vinylboron compounds with adjustable structures and functions. Importantly, the cluster undergoes no structural or nuclearity changes during the reaction, as confirmed by extended X-ray absorption fine structure and X-ray photoelectron spectroscopy studies. This study not only presents a molecular cluster model highlighting the effectiveness of selenide dopants in fabricating new copper nanostructures but also paves the way for utilizing stable copper nanoclusters in diverse and exciting areas beyond catalysis.</p>","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":"6 2","pages":""},"PeriodicalIF":13.9,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.679","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intrinsic role of alkyl side chains in disorder, aggregates, and carrier mobility of nonfullerene acceptors for organic solar cells: A multiscale theoretical study 烷基侧链在有机太阳能电池非富勒烯受体的无序性、聚集性和载流子迁移性中的内在作用:多尺度理论研究
IF 13.9
Aggregate (Hoboken, N.J.) Pub Date : 2024-10-10 DOI: 10.1002/agt2.664
Rongkun Zhou, Chao Li, Zihao Wen, Chen Zhang, Yijie Shi, Hao Hou, Xiaoqing Chen, Qian Kang, Yongzhe Zhang, Hui Yan, Han Yu, Yi Zhao, Zilong Zheng, He Yan
{"title":"Intrinsic role of alkyl side chains in disorder, aggregates, and carrier mobility of nonfullerene acceptors for organic solar cells: A multiscale theoretical study","authors":"Rongkun Zhou,&nbsp;Chao Li,&nbsp;Zihao Wen,&nbsp;Chen Zhang,&nbsp;Yijie Shi,&nbsp;Hao Hou,&nbsp;Xiaoqing Chen,&nbsp;Qian Kang,&nbsp;Yongzhe Zhang,&nbsp;Hui Yan,&nbsp;Han Yu,&nbsp;Yi Zhao,&nbsp;Zilong Zheng,&nbsp;He Yan","doi":"10.1002/agt2.664","DOIUrl":"https://doi.org/10.1002/agt2.664","url":null,"abstract":"<p>Modifications to the alkyl side chains of Y6-type nonfullerene acceptors (NFAs) continuously break through the organic solar cells (OSCs) efficiency by enhancing electron mobility. However, the role of side chains in molecular aggregation and charge transport across different aggregates remains unclear. By employing a multiscale approach in combination with density functional theory (DFT), molecular dynamics (MD) simulations, and kinetic Monte Carlo (KMC), we addressed the issue of how side chains impact molecular aggregation, energy disorder, and the formation of near-macroscopic (∼0.3 µm) conductive network, which are critical for boosting electron mobility. Specifically, the side-chain structure greatly influences the un-conjugated enveloping effect on backbones within aggregates. The effect diminishes with longer linear side chains and is further minimized by using branched side chains. Though static energy disorder increased, the improved connectivity of the conductive network led to a notable increase in electron mobility (from 2.4 × 10<sup>−4</sup> to 3.9 × 10<sup>−4</sup> cm<sup>2</sup>·V<sup>−1</sup>·s<sup>−1</sup>). The findings offer insight into controlling molecular aggregation via alkyl side chains, which helps to further unlock the potential of Y6-type NFAs.</p>","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":"6 2","pages":""},"PeriodicalIF":13.9,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.664","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanism of hierarchical plasmonic biomaterials engineered through peptide-directed self-assembly 通过多肽定向自组装构建分层等离子体生物材料的机制
IF 13.9
Aggregate (Hoboken, N.J.) Pub Date : 2024-10-10 DOI: 10.1002/agt2.677
Lubna Amer, Maurice Retout, Zhicheng Jin, Sumathi Kakanar, Jesse V. Jokerst
{"title":"Mechanism of hierarchical plasmonic biomaterials engineered through peptide-directed self-assembly","authors":"Lubna Amer,&nbsp;Maurice Retout,&nbsp;Zhicheng Jin,&nbsp;Sumathi Kakanar,&nbsp;Jesse V. Jokerst","doi":"10.1002/agt2.677","DOIUrl":"https://doi.org/10.1002/agt2.677","url":null,"abstract":"<p>Hierarchical plasmonic biomaterials constructed from small nanoparticles (NPs) that combine into larger micron-sized structures exhibit unique properties that can be harnessed for various applications. Using diffusion-limited aggregation (DLA) and defined peptide sequences, we developed fractal silver biomaterials with a Brownian tree structure. This method avoids complex redox chemistry and allows precise control of interparticle distance and material morphology through peptide design and concentration. Our systematic investigation revealed how peptide charge, length, and sequence impact biomaterial morphology, confirming that peptides act as bridging motifs between particles and induce coalescence. Characterization through spectroscopy and microscopy demonstrated that arginine-based peptides are optimal for fractal assembly based on both quantitative and qualitative measurements. Additionally, our study of diffusion behavior confirmed the effect of particle size, temperature, and medium viscosity on nanoparticle mobility. This work also provides insights into the facet distribution in silver NPs and their assembly mechanisms, offering potential advancements in the design of materials for medical, environmental, and electronic applications.</p>","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":"6 2","pages":""},"PeriodicalIF":13.9,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.677","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Decellularized umbilical cord wrapped with conductive hydrogel for peripheral nerve regeneration 导电性水凝胶包裹脱细胞脐带用于周围神经再生
IF 13.9
Aggregate (Hoboken, N.J.) Pub Date : 2024-10-10 DOI: 10.1002/agt2.674
Bin Zhang, Hui Zhang, Yangnan Hu, Lei Tian, Hong Cheng, Yusong Wang, Xin Gao, Qingyue Cui, Shasha Zheng, Pan Feng, Feika Bian, Yu Wang, Tingting Liu, Chen Zhang, Renjie Chai
{"title":"Decellularized umbilical cord wrapped with conductive hydrogel for peripheral nerve regeneration","authors":"Bin Zhang,&nbsp;Hui Zhang,&nbsp;Yangnan Hu,&nbsp;Lei Tian,&nbsp;Hong Cheng,&nbsp;Yusong Wang,&nbsp;Xin Gao,&nbsp;Qingyue Cui,&nbsp;Shasha Zheng,&nbsp;Pan Feng,&nbsp;Feika Bian,&nbsp;Yu Wang,&nbsp;Tingting Liu,&nbsp;Chen Zhang,&nbsp;Renjie Chai","doi":"10.1002/agt2.674","DOIUrl":"https://doi.org/10.1002/agt2.674","url":null,"abstract":"<p>Nerve guidance conduits have demonstrated great promise for the restoration of injured peripheral nerves in recent decades. Associated research has focused on improving the structure and function of these conduits as well as simplifying the manufacturing processes. Herein, a novel decellularized umbilical cord (DUC) wrapped with conductive hydrogel is presented for peripheral nerve regeneration, which is prepared by integrating the DUC matrix into a methacrylate gelatin (GelMA)/Ti<sub>3</sub>C<sub>2</sub>T<i><sub>x</sub></i> MXene (MXene) composite hollow conduit (named DUC–MXene–GelMA conduit). The obtained DUC–MXene–GelMA conduit displays superior mechanical properties, electrical conductivity, and biocompatibility. Particularly, ascribed to the introduction of DUC and MXene, the DUC–MXene–GelMA conduit exhibits satisfactory biological effects in promoting neuron growth and Schwann cell proliferation and migration. Through in vivo experiments using a rat sciatic nerve injury model, the beneficial effects of the DUC–MXene–GelMA conduit on axonal regeneration and motor function recovery are demonstrated. These findings indicate that the DUC–MXene–GelMA conduit may be a promising candidate for peripheral nerve injury repair.</p>","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":"6 2","pages":""},"PeriodicalIF":13.9,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.674","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photochemical synthesis of Ag12Cu7 nanocluster with cuprophilicity-related long-lived phosphorescence 具有亲铜相关长寿命磷光的Ag12Cu7纳米团簇光化学合成
IF 13.9
Aggregate (Hoboken, N.J.) Pub Date : 2024-10-10 DOI: 10.1002/agt2.675
Yu-Xin Wang, Fu-Qiang Zhang, Zhikai Qi, Xingxing Zhao, Nan Zhang, Hongjin Li, Huan Li, Xian-Ming Zhang
{"title":"Photochemical synthesis of Ag12Cu7 nanocluster with cuprophilicity-related long-lived phosphorescence","authors":"Yu-Xin Wang,&nbsp;Fu-Qiang Zhang,&nbsp;Zhikai Qi,&nbsp;Xingxing Zhao,&nbsp;Nan Zhang,&nbsp;Hongjin Li,&nbsp;Huan Li,&nbsp;Xian-Ming Zhang","doi":"10.1002/agt2.675","DOIUrl":"https://doi.org/10.1002/agt2.675","url":null,"abstract":"<p>Atomically precise alloyed nanoclusters (NCs) have attracted widespread attention due to synergistic effect but their controllable synthesis remains a challenge. Among them, Ag–Cu alloyed NCs are particularly limited due to significant difference in redox potential, and it is highly desirable to develop controllable and mild synthesis methods. This work proves the feasibility of photochemical synthesis method for Ag<sub>12</sub>Cu<sub>7</sub>(4-<i><sup>t</sup></i>BuPhC≡C)<sub>14</sub>(Dpppe)<sub>3</sub>Cl<sub>3</sub>(SbF<sub>6</sub>)<sub>2</sub> (<b>Ag<sub>12</sub>Cu<sub>7</sub></b>) alloyed NC that exhibits remarkable ligand-supported cuprophilic interaction. Experimental and time-dependent UV–Vis spectroscopy first reveals that the formation of <b>Ag<sub>12</sub>Cu<sub>7</sub></b> is a step-by-step process, in which light induces the reduction of Ag<sup>+</sup> to <b>Ag<sub>19</sub></b> cluster containing two electrons, then CuCl incorporates into Ag NC to yield the target NC, providing an alternative pathway toward alloyed NCs. Remarkably, Cu···Cu interaction endows <b>Ag<sub>12</sub>Cu<sub>7</sub></b> with a strong long-lived red phosphorescence of 30 µs at room temperature, which is superior to the majority of Ag–Cu-alloyed NCs. Theoretical calculations indicate that the phosphorescence originates from cluster-centered triplet–excited state modified by cuprophilic interactions, mixed with ligand-to-metal charge transfer.</p>","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":"6 2","pages":""},"PeriodicalIF":13.9,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.675","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rapid and accurate identification of multiple metal ions using a bispyrene-based fluorescent sensor array with aggregation-induced enhanced emission property 利用聚集体诱导增强发射特性的双芘荧光传感器阵列快速准确地识别多种金属离子
IF 13.9
Aggregate (Hoboken, N.J.) Pub Date : 2024-10-08 DOI: 10.1002/agt2.678
Haoran Zheng, Hainan Ma, Haolin Sun, Lina Zhang, Xiaoyu Zhang, Ruimeng Sun, Han Wang, Guo-Yang Xu, Lei Wang, Yanfei Qi
{"title":"Rapid and accurate identification of multiple metal ions using a bispyrene-based fluorescent sensor array with aggregation-induced enhanced emission property","authors":"Haoran Zheng,&nbsp;Hainan Ma,&nbsp;Haolin Sun,&nbsp;Lina Zhang,&nbsp;Xiaoyu Zhang,&nbsp;Ruimeng Sun,&nbsp;Han Wang,&nbsp;Guo-Yang Xu,&nbsp;Lei Wang,&nbsp;Yanfei Qi","doi":"10.1002/agt2.678","DOIUrl":"https://doi.org/10.1002/agt2.678","url":null,"abstract":"<p>Multiple metal ions are traditionally detected using inductively coupled plasma mass spectrometry (ICP-MS) and atomic fluorescence spectrometry. Although these methods are sensitive and accurate, they depend on complex instruments and require highly trained operators, making low costly rapid detection challenging. It is urgent to develop a convenient, rapid and sensitive method to detect multiple metal ions. Herein, we designed a bispyrene derivative (BP) with aggregation-induced enhanced emission (AIEE) property to construct a high fluorescent sensor array to realize the effective identification of four metal ions (Fe<sup>3+</sup>, Cu<sup>2+</sup>, Co<sup>2+</sup> and Cd<sup>2+</sup>). The differential coordination capability between metal ions and BP with the aid of acetate ions resulted the possibility of array-based sensing. The four heavy metal ions could be immediately classified in the concentration of 100 nM. The limit of detection (LOD) of Fe<sup>3+</sup>, Cu<sup>2+</sup>, Co<sup>2+</sup>, and Cd<sup>2+</sup> were as low as 16.2, 21.8, 51.4, and 25.9 nM, respectively. Furthermore, the sensor array was applied for identification multiple heavy metal ions in environmental samples and iron ion in rat serums with identified of 100%. The sample consumption as low as 2 µL for each detection and the results could be extracted by smartphones under ultraviolet lamps. It provided a rapid, sensitive, low-cost, and on-site multiple metal ions detection method.</p>","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":"6 2","pages":""},"PeriodicalIF":13.9,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.678","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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