Angewandte Chemie最新文献

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Bright and Versatile Azetidinecarboxamide-Based Fluorophore–Ligand Conjugates for High-Resolution Cell Imaging 用于高分辨率细胞成像的明亮和通用的氮杂啶羧基荧光基团配体缀合物
Angewandte Chemie Pub Date : 2025-04-01 DOI: 10.1002/ange.202505579
Ning Xu, Qinglong Qiao, Chao Wang, Wei Zhou, Pengjun Bao, Jin Li, Shaowei Wu, Xiaogang Liu, Zhaochao Xu
{"title":"Bright and Versatile Azetidinecarboxamide-Based Fluorophore–Ligand Conjugates for High-Resolution Cell Imaging","authors":"Ning Xu,&nbsp;Qinglong Qiao,&nbsp;Chao Wang,&nbsp;Wei Zhou,&nbsp;Pengjun Bao,&nbsp;Jin Li,&nbsp;Shaowei Wu,&nbsp;Xiaogang Liu,&nbsp;Zhaochao Xu","doi":"10.1002/ange.202505579","DOIUrl":"https://doi.org/10.1002/ange.202505579","url":null,"abstract":"<p>Fluorophore–ligand conjugates play a pivotal role in cellular imaging, providing high target specificity. However, simultaneously achieving conjugates with high brightness and ligand-targeting diversity presents significant challenges. Traditional strategies often require complex, multistep modifications for fluorophore enhancement and ligand conjugation. Here, we present an azetidinecarboxamide strategy that addresses these challenges by integrating brightness enhancement and ligand conjugation capabilities within a single molecular framework. The azetidinecarboxamide core suppresses twisted intramolecular charge transfer (TICT), thereby enhancing fluorescence quantum yield. Its carbonyl group provides a versatile site for conjugating a wide range of targeting ligands, enabling the rapid development of diverse and tunable fluorophore–ligand conjugates. This streamlined approach reduces synthetic complexity, accelerates probe development, and is compatible with a wide variety of fluorophores, such as coumarin, naphthalimide, NBD, rhodol, rhodamine, and silicon–rhodamine, facilitating the creation of high-performance, multifunctional probes for advanced cellular imaging.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144179227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic Borate Esterification for Evolved Supramolecular Chirality and Chiral Optics 演化的超分子手性和手性光学的动态硼酸酯酯化反应
Angewandte Chemie Pub Date : 2025-04-01 DOI: 10.1002/ange.202504617
Zhuoer Wang, Changyu Chu, Aiyou Hao, Pengyao Xing
{"title":"Dynamic Borate Esterification for Evolved Supramolecular Chirality and Chiral Optics","authors":"Zhuoer Wang,&nbsp;Changyu Chu,&nbsp;Aiyou Hao,&nbsp;Pengyao Xing","doi":"10.1002/ange.202504617","DOIUrl":"https://doi.org/10.1002/ange.202504617","url":null,"abstract":"<p>Topological chemical reactions in confined environments offer unique opportunities for constructing dynamically tunable crystalline materials and architecturally defined polymers. However, their potential within functional supramolecular systems and chiral materials remains largely untapped. In this work, we introduce, for the first time, a borate esterification reaction to achieve dynamic modulation of supramolecular chirality and chiroptical properties under aggregation conditions. Pyrene-phenylalanine derivatives, following functionalization with phenylboronic acid groups, coassemble with catechol-functionalized pyrene derivatives. This coassembly undergoes spontaneous and highly efficient borate esterification under ambient conditions, inducing nanoscale morphological evolution, and an inversion of supramolecular chirality. Both experimental results and DFT-based computations reveal that the supramolecular chirality inversion is primarily driven by a transition from π–π stacking to CH–π interactions between pyrene moieties. This coassembly-borate esterification process represents a powerful integration of noncovalent assembly and covalent chemistry, providing a versatile platform for the design of soft materials and chiral functional systems. Moreover, the introduction of alizarin derivatives containing catechol motifs enables the transfer of circularly polarized luminescence (CPL), resulting in tunable emission shifts from blue and cyan to red. This work broadens the functional scope of chiral luminescent materials and opens new avenues for their application.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144179076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Monitoring Glycolysis by Endogenous 31P CEST Magnetic Resonance Imaging 内源性31P CEST磁共振成像监测糖酵解
Angewandte Chemie Pub Date : 2025-04-01 DOI: 10.1002/ange.202501189
Giulia Vassallo, Cecilia Fiorucci, Francesca Garello, Silvio Aime, Daniela Delli Castelli
{"title":"Monitoring Glycolysis by Endogenous 31P CEST Magnetic Resonance Imaging","authors":"Giulia Vassallo,&nbsp;Cecilia Fiorucci,&nbsp;Francesca Garello,&nbsp;Silvio Aime,&nbsp;Daniela Delli Castelli","doi":"10.1002/ange.202501189","DOIUrl":"https://doi.org/10.1002/ange.202501189","url":null,"abstract":"<p>In this study, we present a novel approach to investigate glycolysis by means of the <sup>3</sup>¹P CEST technique applied to phosphate-containing substrates at their endogenous concentration. The method relies on the assessment of the saturation transfer (ST) observed on the <sup>3</sup>¹P signals of inorganic phosphate (Pi) or phosphocreatine (PCr) following the selective irradiation of phosphate groups of endogenous molecules exchanging with ATP, Pi, and indirectly with PCr in enzyme-catalyzed reactions. The concentrations of these substrates often fall below the threshold for direct detection. The <sup>3</sup>¹P CEST technique amplifies their responses, making them detectable via the ST effect to the <sup>3</sup>¹P resonance of the selected reference signal. The method was first validated in vitro on mouse breast adenocarcinoma cell pellets (TS/A), where the intracellular Pi signal was monitored to assess the ST effect associated with the saturation of phosphoester-containing molecules. The use of a glycolysis inhibitor and different experimental temperatures (37 °C or 4 °C) provided insights supporting the rationale behind the method. A comparison of <sup>3</sup>¹P Z-spectra was carried out on murine breast cancer cell lines with different degrees of aggressiveness, showing the ability to assess metabolic differences. Finally, in vivo experiments on mice models of mammary adenocarcinoma demonstrated that <sup>3</sup>¹P CEST can differentiate tumor and healthy tissue based on their metabolic characteristics.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aminomethyl Phosphonic Acid as Highly Effective Multifunctional Additive for Modification of Electron Transport Layer and Perovskite in Photovoltaic Solar Cells 氨基甲基膦酸作为改性光伏太阳能电池中电子传输层和钙钛矿的高效多功能添加剂
Angewandte Chemie Pub Date : 2025-04-01 DOI: 10.1002/ange.202424479
Yujie Gao, Wenyu Gong, Zeqi Zhang, Jianing Guo, Jingyuan Ma, Xuan Li, Yanli Zeng, Mingxing Wu
{"title":"Aminomethyl Phosphonic Acid as Highly Effective Multifunctional Additive for Modification of Electron Transport Layer and Perovskite in Photovoltaic Solar Cells","authors":"Yujie Gao,&nbsp;Wenyu Gong,&nbsp;Zeqi Zhang,&nbsp;Jianing Guo,&nbsp;Jingyuan Ma,&nbsp;Xuan Li,&nbsp;Yanli Zeng,&nbsp;Mingxing Wu","doi":"10.1002/ange.202424479","DOIUrl":"https://doi.org/10.1002/ange.202424479","url":null,"abstract":"<p>The passivation of detrimental perovskite-based defects is critically acknowledged for fabricating highly effective perovskite solar cells (PSCs). The presence of a high-quality electron transport layer (ETL) is also considered a pivotal factor for effective charge extraction and transport dynamics. Herein, a simple small organic molecule, aminomethyl phosphonic acid (AMPA), is introduced as a multifunctional additive in the SnO<sub>2</sub> ETL. The defects in the SnO<sub>2</sub> ETL are effectively suppressed by passivating the oxygen vacancies upon the SnO<sub>2</sub> surface. Simultaneously, the carrier mobility and crystallinity of SnO<sub>2</sub> are enhanced, and the upward-regulated conduction band minimum (CBM) is beneficial for constructing a favorable energy level alignment with the perovskite layer. Notably, the introduced residuals on the SnO<sub>2</sub> surface can function as crystalline seeds for growth of large perovskite grains, which can passivate the defects in the perovskite bulk phase, boundaries, as well as the SnO<sub>2</sub>/perovskite interface. Consequently, the power conversion efficiency (<i>PCE</i>) value of the AMPA-modified PSCs is enhanced from 19.91% to 24.22%. Most importantly, the unencapsulated PSCs with AMPA maintained 94.9% of the initial <i>PCE</i> during 720 h of storage at a relative humidity of 10%, attributed to the improved hydrophobicity of both the SnO<sub>2</sub> and perovskite layers after AMPA modification.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancing Circularly Polarized Luminescence of Anthraquinones via J-Type Supramolecular Polymerization j型超分子聚合增强蒽醌类化合物的圆极化发光
Angewandte Chemie Pub Date : 2025-04-01 DOI: 10.1002/ange.202505776
Laiwei Gao, Rui Liao, Lei Ao, Yifei Zhang, Jianan Jin, Feng Wang
{"title":"Enhancing Circularly Polarized Luminescence of Anthraquinones via J-Type Supramolecular Polymerization","authors":"Laiwei Gao,&nbsp;Rui Liao,&nbsp;Lei Ao,&nbsp;Yifei Zhang,&nbsp;Jianan Jin,&nbsp;Feng Wang","doi":"10.1002/ange.202505776","DOIUrl":"https://doi.org/10.1002/ange.202505776","url":null,"abstract":"<p>Circularly\u0000polarized luminescence materials based on cost-effective point-chiral luminophores are highly desirable; however, their performance is often hindered by weak exciton–chirality coupling between the luminophore and its adjacent stereocenters. Here, we introduce J-type supramolecular polymerization as an effective strategy to address this challenge. By attaching amide groups to point-chiral anthraquinone luminophores, the formation of directional hydrogen bonds facilitates efficient chirality transfer from peripheral stereocenters to anthraquinones, resulting in supramolecular polymers with amplified chiroptical asymmetry. More importantly, the incorporation of acetylene spacers reduces torsional angle of the anthraquinone core compared to the nonacetylene control compound (1.81° versus 33.4°), promoting J-aggregation and increasing emission intensity. This structural optimization enables the supramolecular polymers to achieve a circularly polarized luminescence brightness of 13.8 M⁻¹cm⁻¹, marking a significant advancement in point-chiral luminophore systems. Furthermore, the integration of Förster resonance energy transfer into these supramolecular polymers allows for the fabrication of color-tunable circularly polarized electroluminescent devices. Overall, J-type supramolecular polymerization represents a promising approach for developing high-performance chiroptical materials by simultaneously optimizing emission dissymmetry and quantum efficiency.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144179193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A High-Efficiency Ultraviolet Organic Light-Emitting Diode Employing a Double Boron–Oxygen–Nitrogen-Based Emitter 采用双硼-氧-氮基发射极的高效紫外有机发光二极管
Angewandte Chemie Pub Date : 2025-04-01 DOI: 10.1002/ange.202505328
Feng Zhan, Kewei Xu, Taiju Tsuboi, Yuanbin She, Guijie Li
{"title":"A High-Efficiency Ultraviolet Organic Light-Emitting Diode Employing a Double Boron–Oxygen–Nitrogen-Based Emitter","authors":"Feng Zhan,&nbsp;Kewei Xu,&nbsp;Taiju Tsuboi,&nbsp;Yuanbin She,&nbsp;Guijie Li","doi":"10.1002/ange.202505328","DOIUrl":"https://doi.org/10.1002/ange.202505328","url":null,"abstract":"<p>Designing high-efficiency ultraviolet organic light-emitting diodes (UV OLEDs) remains challenging due to the need for efficient utilization of triplet excitons while maintaining a wide bandgap. In this study, we designed double boron–oxygen–nitrogen-based polycyclic aromatic hydrocarbons (dBON-PAHs) with rigid planar structures and developed a novel UV emitter, BO-N, featuring hybridized local and charge-transfer (HLCT) properties. BO-N exhibited UV emission in toluene solution and 1,3-di(9<i>H</i>-carbazol-9-yl)benzene (mCP) film, with photoluminescence (PL) peaks of 391 and 400 nm and narrow full width at half-maximum (FWHM) values of 15 and 34 nm, respectively. The device doped with 5 wt% BO-N achieved a narrowband UV emission with an FWHM of 37 nm, an electroluminescence peak (<i>λ</i><sub>EL</sub>) of 399 nm, and CIE coordinates of (0.166, 0.030). Moreover, the device attained a record-high maximum external quantum efficiency (EQE<sub>max</sub>) of 18.6% among reported HLCT-based UV OLEDs with CIE<sub>y</sub> &lt; 0.05. These findings highlight the great potential of double BON-PAHs as robust emitters for high-performance UV OLEDs.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cation-Anion-Engineering Modified Oxychloride Zr-Based Lithium Superionic Conductors for All-Solid-State Lithium Batteries 全固态锂电池用阳离子-阴离子工程改性氯化氧锆基锂超离子导体
Angewandte Chemie Pub Date : 2025-04-01 DOI: 10.1002/ange.202501749
Zongnan Li, Yongbiao Mu, Kunxi Lü, Guojian Kang, Ting Yang, Shuping Huang, Mingdeng Wei, Lin Zeng, Yafeng Li
{"title":"Cation-Anion-Engineering Modified Oxychloride Zr-Based Lithium Superionic Conductors for All-Solid-State Lithium Batteries","authors":"Zongnan Li,&nbsp;Yongbiao Mu,&nbsp;Kunxi Lü,&nbsp;Guojian Kang,&nbsp;Ting Yang,&nbsp;Shuping Huang,&nbsp;Mingdeng Wei,&nbsp;Lin Zeng,&nbsp;Yafeng Li","doi":"10.1002/ange.202501749","DOIUrl":"https://doi.org/10.1002/ange.202501749","url":null,"abstract":"<p>Within the family of halide solid electrolytes (SEs), Li<sub>2</sub>ZrCl<sub>6</sub> demonstrates high oxidative stability, cost-effectiveness, and mechanical deformability, positioning it as a promising candidate for SEs. However, the application of Li<sub>2</sub>ZrCl<sub>6</sub> as a SEs was hindered by its low ionic conductivity at room temperature. Current strategies to enhance the ionic conductivity of Li<sub>2</sub>ZrCl<sub>6</sub> primarily are focused on single cation or anion sublattice-engineering, each with distinct advantages and limitations. Here, we propose a novel cation and anion-sublattice-engineering strategy, termed CASE, to increase the amorphous content and thus enhance ionic conductivity. The incorporation of Cu<sup>2+</sup> and O<sup>2−</sup> induces distinctive structural modifications within Li<sub>2</sub>ZrCl<sub>6</sub>. This structure corroborated through analytic data of X-ray absorption spectroscopy, the neutron diffraction, and ab initio molecular dynamics. Consequently, the amorphous Li<sub>2.1</sub>Zr<sub>0.95</sub>Cu<sub>0.05</sub>Cl<sub>4.4</sub>O<sub>0.8</sub> achieves an enhanced ionic conductivity of 2.05 mS cm<sup>−1</sup> at 25 °C. Furthermore, all-solid-state lithium batteries utilizing the amorphous Li<sub>2.1</sub>Zr<sub>0.95</sub>Cu<sub>0.05</sub>Cl<sub>4.4</sub>O<sub>0.8</sub> as an electrolyte and LiNi<sub>0.83</sub>Co<sub>0.11</sub>Mn<sub>0.06</sub>O<sub>2</sub> as a cathode exhibit a superior long-term cycling stability retaining 90.3% of capacity after 1000 cycles at 2 C under room temperature, which are much higher than those of Zr-based halide electrolytes in publications. Such a result might stimulate the development of more amorphous structures with high ionic conductivity in the CASE strategy.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Insertion of Nitriles Into a Gold(III)/Carbene Bond: A Direct and Powerful Entry to Imino-Substituted Carbenes 金(III)/卡宾键上腈的插入:亚氨基取代卡宾的直接和有力进入
Angewandte Chemie Pub Date : 2025-03-31 DOI: 10.1002/ange.202504162
Rui Wei, Nina Albouy, Sonia Mallet-Ladeira, Karinne Miqueu, Didier Bourissou
{"title":"Insertion of Nitriles Into a Gold(III)/Carbene Bond: A Direct and Powerful Entry to Imino-Substituted Carbenes","authors":"Rui Wei,&nbsp;Nina Albouy,&nbsp;Sonia Mallet-Ladeira,&nbsp;Karinne Miqueu,&nbsp;Didier Bourissou","doi":"10.1002/ange.202504162","DOIUrl":"https://doi.org/10.1002/ange.202504162","url":null,"abstract":"<p>Strikingly, very little is known so far about reactive gold(III) carbenes. They have been proposed as key intermediates in a few reactions but remain chemical curiosities. Taking into account the enhanced electrophilicity of cationic Au(III) carbene complexes, we were intrigued by their reactivity with nitriles. Thus, we discovered a simple and efficient entry to imino-substituted carbenes. The transient (N^C^C)Au(III)←:CH(dmp)<sup>+</sup> carbene readily reacts with acetonitrile, benzonitrile, and diisopropyl cyanamide, affording stable and isolable Au(III) carbene complexes. Here, the imino group acts either as a strongly π-donating or a spectator substituent. Ligand exchange at Au(III) or protodeauration/deprotonation provides access to the corresponding free species, which display dual imino-carbene / nitrile-ylide reactivity, as substantiated by stoichiometric and catalytic dimerization, O─H insertion and [3 + 2] cycloaddition reactions.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ange.202504162","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144179208","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
Hydrophobicity-Controlled Self-Assembly of Supramolecular Peptide Nanotubes in Water 超分子肽纳米管在水中疏水性控制的自组装
Angewandte Chemie Pub Date : 2025-03-31 DOI: 10.1002/ange.202423828
Min Zeng, William Parsons, Yixuan Chen, David K. Chalmers, Sébastien Perrier
{"title":"Hydrophobicity-Controlled Self-Assembly of Supramolecular Peptide Nanotubes in Water","authors":"Min Zeng,&nbsp;William Parsons,&nbsp;Yixuan Chen,&nbsp;David K. Chalmers,&nbsp;Sébastien Perrier","doi":"10.1002/ange.202423828","DOIUrl":"https://doi.org/10.1002/ange.202423828","url":null,"abstract":"<p>Polymer-conjugated peptides are attractive building blocks for the construction of new nanomaterials. However, the ability to control the self-assembly of these materials remains a major limitation to their wider utilization. Herein, we report a facile strategy to fine-tune the assembly of water-soluble hydrophilic polymer-conjugated cyclic peptides by incorporating a defined, short hydrocarbon linker between the polymer and peptide. This addition creates a well-defined hydrophobic “inner shell” that suppresses water from disrupting the organized peptide hydrogen bond network. Our approach is demonstrated using a series of cyclic peptide-linker-PDMA conjugates that were evaluated by asymmetric flow field flow fractionation, small angle neutron scattering and transmission electron microscopy. Molecular dynamics simulations were also used to show how the polymer and the peptide stacks interact and illustrate the impact of this hydrophobic inner shell approach. This strategy provides a modular approach to fine control the nanotube self-assembling behavior. We expect that this technique will improve the versatility of peptide nanotubes for the engineering of advanced nanomaterials.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ange.202423828","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140819","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
Peripheral Engineering of Multiple-Resonance Framework Targeting Efficient Organic Lasers 多共振框架瞄准高效有机激光器的外围工程
Angewandte Chemie Pub Date : 2025-03-31 DOI: 10.1002/ange.202504652
Tuul Tsagaantsooj, Xun Tang, Tao Zhang, Yi-Ting Lee, Rajat Walia, Xian-Kai Chen, Chihaya Adachi
{"title":"Peripheral Engineering of Multiple-Resonance Framework Targeting Efficient Organic Lasers","authors":"Tuul Tsagaantsooj,&nbsp;Xun Tang,&nbsp;Tao Zhang,&nbsp;Yi-Ting Lee,&nbsp;Rajat Walia,&nbsp;Xian-Kai Chen,&nbsp;Chihaya Adachi","doi":"10.1002/ange.202504652","DOIUrl":"https://doi.org/10.1002/ange.202504652","url":null,"abstract":"<p>Multiple-resonance thermally activated delayed fluorescent (MR-TADF) emitters have emerged as promising candidates for organic laser applications due to the potential for simultaneously achieving large oscillator strength and triplet utilization. In this study, we investigate the impact of peripheral <i>tert</i>-butyl (t-Bu)- and phenyl (Ph)-substituents on the typical 9-(phenylcarbazol-3-yl)-9H-carbazole-3-carbonitrile (CzBN) MR framework. Although these modifications preserve the frontier molecular orbital distribution with large oscillator strengths, they significantly influence excited-state dynamics and molecular aggregation even at low doping concentrations. Introducing Ph substituents extends the π–conjugation extension of CzBN, promoting closer molecular packing, detrimental molecular aggregation, and significantly broadening the excited-state absorption (ESA) band, which negatively impacts lasing performance. In contrast, CzBN-tBu, incorporating <i>t</i>-Bu groups as nonconjugated substituents, demonstrated reduced molecular aggregation and a distinct separation between the ESA band and stimulated emission region. Consequently, the optimal distributed feedback lasing performance is achieved by CzBN-tBu across various doping concentrations, resulting in the lowest lasing threshold of 3.4 µJ cm<sup>−2</sup>. These findings underscore the impact of inherent aggregation at low doping ratios on lasing activities, highlighting the crucial role of rational peripheral engineering in modulating molecular interactions and excited-state dynamics, offering design strategies for developing MR lasing molecules.</p>","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ange.202504652","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144179272","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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