Chemistry - A European Journal最新文献_第9页

An Efficient Thiol-ene Mediated Protocol for Thiolated Peptide Synthesis and On-Resin Diversification. 巯基烯介导的硫代肽合成和上树脂多样化的高效方案。

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-05-15 DOI: 10.1002/chem.202501372

Nikita Ostrovitsa, Conor Williams, Konstantin Raabe, Joshua T McLean, Markus Muttenthaler, Eoin M Scanlan

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Reversible Decarbonylation of a Metal Phosphaketene. 金属磷酸烯烯的可逆脱羰反应。

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-05-15 DOI: 10.1002/chem.202501527

Matthew J Reveley, Joey Feld, Jose M Goicoechea

{"title":"Reversible Decarbonylation of a Metal Phosphaketene.","authors":"Matthew J Reveley, Joey Feld, Jose M Goicoechea","doi":"10.1002/chem.202501527","DOIUrl":"10.1002/chem.202501527","url":null,"abstract":"The synthesis of a metalated phosphastannene by reaction of the known cobalt(I) phosphaketene complex Co(DippPDI)(PCO) (DippPDI = 1,1'-(pyridine-2,6-diyl)bis(N-(2,6-diisopropylphenyl)ethan-1-imine) with Sn[CH(SiMe3)2]2 is described. The resulting compound, Co(DippPDI)(CO){P═Sn[CH(SiMe3)2]2}, contains a localized P═Sn double bond, yet reacts like a phosphaketene transfer reagent, suggesting that, in solution, Co(DippPDI)(CO){P═Sn[CH(SiMe3)2]2} appears to exist in equilibrium with Co(DippPDI)(PCO) and Sn[CH(SiMe3)2]2. This is facilitated by the fact that, on decarbonylation with Sn[CH(SiMe3)2]2, the carbon monoxide extruded from the phosphaketene precursor Co(DippPDI)(PCO) remains in the coordination sphere of cobalt. The novel phosphaketene compounds (IDipp)Au(PCO) (IDipp = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) and (DippNacNac)Zn(PCO) (DippNacnac = HC[C(Me)N(Dipp)]2; Dipp = 2,6-iPr2C6H3) can be synthesized by reaction of Co(DippPDI)(CO){P═Sn[CH(SiMe3)2]2} with Au(IDipp)Cl or (DippNacNac)ZnCl·LiCl(OEt2)2, respectively. In the case of the former, the released stannylene Sn[CH(SiMe3)2]2 ultimately inserts into the Au─PCO bond, affording the tin(IV) complex (IDipp)AuSn(PCO)[CH(SiMe3)2]2.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e202501527"},"PeriodicalIF":3.9,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Nonconventional Silicon-Hybrid Luminophores of Hyperbranched Polymer: Fluorescence Regulation and Applications. 超支化聚合物的非常规硅杂化发光团：荧光调控及应用。

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-05-15 DOI: 10.1002/chem.202501133

Rui Wu, Yanyu He, Zheng Li, Zhiyu Yu, Xin Guo, Hongxia Yan

{"title":"Nonconventional Silicon-Hybrid Luminophores of Hyperbranched Polymer: Fluorescence Regulation and Applications.","authors":"Rui Wu, Yanyu He, Zheng Li, Zhiyu Yu, Xin Guo, Hongxia Yan","doi":"10.1002/chem.202501133","DOIUrl":"10.1002/chem.202501133","url":null,"abstract":"Hyperbranched polysiloxanes are a class of nonconventional polymers with unique structural features and excellent physicochemical properties, which have attracted great attention in the field of luminescent materials. This review summarizes the recent progress in the study of luminescence mechanisms and optical properties of various hyperbranched polymers containing Si─O─C segments with Si as branching points, including hyperbranched polysiloxanes, hyperbranched polyborosiloxanes, and hyperbranched polysilphosphates. Through molecular design and structural regulation, researchers have successfully achieved multicolor fluorescence and room-temperature phosphorescence emission ranging from blue to red in these polymers, with quantum yields reaching up to 54.1% and fluorescence lifetimes up to 9.73 µs. The AIE properties and excellent biocompatibility of these polymers provide new materials and strategies for applications in bioimaging, controlled drug release, information security encryption, and ion detection. Moreover, the opportunities and challenges for further development are briefly discussed.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e202501133"},"PeriodicalIF":3.9,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Cover Feature: Construction of a Cyclic Regular-Triangle Trimer of Cytochrome c555 with a Central Hole Using Sortase A 封面特征：利用分选酶a构建细胞色素c555带中心孔的循环正三角形三聚体

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-05-15 DOI: 10.1002/chem.202582704

Gissi Novientri, Kodai Fujiwara, Tsuyoshi Mashima, Hiroaki Matsuura, Hideaki Ogata, Takayuki Uchihashi, Sotaro Fujii, Yoshihiro Sambongi, Shun Hirota

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Cover Feature: Supramolecular Matter Through Crystal Engineering: Covalent Bond Formation to Postsynthetic Modification 封面特征：通过晶体工程的超分子物质：共价键形成到合成后修饰

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-05-15 DOI: 10.1002/chem.202582703

Changan Li, Leonard R. MacGillivray

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Front Cover: Tethered Enantiopure Boramidines for Advanced Chiroptical Studies 封面：系缚的对映纯硼脒用于高级热带研究

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-05-15 DOI: 10.1002/chem.202582701

Nidal Saleh, Valerio Zullo, Estefanía Sucre-Rosales, Lorenzo Arrico, Francesco Zinna, Gennaro Pescitelli, Céline Besnard, Eric Vauthey, Jérôme Lacour

{"title":"Front Cover: Tethered Enantiopure Boramidines for Advanced Chiroptical Studies","authors":"Nidal Saleh, Valerio Zullo, Estefanía Sucre-Rosales, Lorenzo Arrico, Francesco Zinna, Gennaro Pescitelli, Céline Besnard, Eric Vauthey, Jérôme Lacour","doi":"10.1002/chem.202582701","DOIUrl":"https://doi.org/10.1002/chem.202582701","url":null,"abstract":"The Front Cover shows a boramidine chromophore being excited by a linearly polarized UV wave (purple). The molecule is capable of circularly polarized luminescence (CPL) represented as a CP blue wave coming from the enantiopure H8-BINOL moiety. A blurred mirror reinforces the concept of chirality, since the antipodal enantiomer is also excited and emits CPL. In their Research Article (DOI: 10.1002/chem.202500490), N. Saleh, E. Vauthey, J. Lacour and co-workers report the synthesis, characterization, and photophysical analysis of novel BINOL- and H8-BINOL-tethered boramidines, leveraging the chiral perturbation strategy for CPL material design. These enantiopure compounds, prepared in a concise three-step synthesis, exhibit high fluorescence quantum yields ϕ (up to 95% in N₂-saturated solutions) and luminescence dissymmetry factors (|glum| ∼10‒3). Transient absorption spectroscopy and quantum-chemical calculations provide insight into their singlet–triplet spin-orbit coupling and intersystem crossing mechanisms. Cover image by Estefanía Sucre-Rosales and Ricardo Fernández-Terán.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture>\u0000 </div>\u0000 </figure>","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":"31 27","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/chem.202582701","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From Desferrioxamine B Umpolung to an Enantiopure Bifunctional Chelator for ⁸⁹Zr-immunoPET. 从地铁胺B到89zr免疫pet的对映纯双功能螯合剂。

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-05-15 DOI: 10.1002/chem.202501114

Laurie Zujew, Laurent Raibaut, Jean-Claude Chambron

引用次数: 0

Pyridyl/Phenyl-Appended Acrylonitrile π-Conjugated Molecules: Thermally Stable Organic Crystals for Amplified Spontaneous Emission. 吡啶基/苯基附加丙烯腈π共轭分子：用于放大自发发射的热稳定有机晶体。

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-05-14 DOI: 10.1002/chem.202501326

Mahiro Nakabayashi, Takumi Matsuo, Shotaro Hayashi

{"title":"Pyridyl/Phenyl-Appended Acrylonitrile π-Conjugated Molecules: Thermally Stable Organic Crystals for Amplified Spontaneous Emission.","authors":"Mahiro Nakabayashi, Takumi Matsuo, Shotaro Hayashi","doi":"10.1002/chem.202501326","DOIUrl":"10.1002/chem.202501326","url":null,"abstract":"Highly solid-state emissive molecular crystals have attracted attention as gain media for organic lasers. There is a need to develop solid-state luminescent molecules with excellent solubility and thermal stability through chemical design approaches despite the structural and functional diversity of organic molecular materials toward such media. Here, we report the synthesis and properties of the t-butyl- and pyridyl or phenyl-appended cyano-β-substituted distyrylbenzenes (CDSBs). A solution process at room temperature could prepare each crystal of these molecules modified with pyridyl/phenyl. The crystal structure analysis results suggest that the difference in the pyridyl/phenyl group affects the crystal system. Solid-state emissions were similar due to the molecular structural differences affecting only the crystal structure. The emission spectrum of the crystal exhibited amplified spontaneous emission (ASE) properties with the formation of population inversion. However, the pyridyl-pyridyl interactions contributed to the thermal stability of the crystal, which was stable even under high-energy density laser irradiation. Therefore, molecular modification with the pyridyl group offers a new strategy for controlling crystal structures and rigid frameworks.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e202501326"},"PeriodicalIF":3.9,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143958426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Organic Cage Rotaxanes. 有机笼型轮烷。

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-05-14 DOI: 10.1002/chem.202501014

Zarik Zaheer Yusaf, Benjamin D Egleston, Gokay Avci, Kim E Jelfs, James E M Lewis, Rebecca L Greenaway

引用次数: 0

Enhanced Near-infrared Circularly Polarized Luminescence Activity in Fluorinated Binolate Ytterbium Complexes. 氟化Binolate镱配合物的近红外圆偏振发光活性增强。

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-05-14 DOI: 10.1002/chem.202500910

Tingting Feng, Rui Cai, Zhenhua Zhu, Quan Zhou, Annika Sickinger, Olivier Maury, Yannick Guyot, Amina Bensalah-Ledoux, Stéphan Guy, Bruno Baguenard, Boris Le Guennic, Jinkui Tang

{"title":"Enhanced Near-infrared Circularly Polarized Luminescence Activity in Fluorinated Binolate Ytterbium Complexes.","authors":"Tingting Feng, Rui Cai, Zhenhua Zhu, Quan Zhou, Annika Sickinger, Olivier Maury, Yannick Guyot, Amina Bensalah-Ledoux, Stéphan Guy, Bruno Baguenard, Boris Le Guennic, Jinkui Tang","doi":"10.1002/chem.202500910","DOIUrl":"https://doi.org/10.1002/chem.202500910","url":null,"abstract":"Chiral lanthanide complexes hold great potential in developing advanced circularly polarized luminescence (CPL) materials in the near infrared (NIR) wavelength range. While various ligands, such as β-diketonates and biphenols, have been successfully used to sensitize NIR emission of lanthanide ions, little attention has been paid to regulating CPL behaviors via ligand modification. In this study, we report the synthesis, structure, luminescence and chiroptical properties of a pair of novel air-stable Shibasaki-type Yb(III) enantiomers supported by 3,3'-fluorinated binaphthol (F2BINOL). Compared to their non-fluorinated counterparts, these fluorinated complexes exhibit larger dihedral angles between the two naphthyl moieties and more distorted octahedral coordination environments around the Yb(III) ion, leading to increased overall crystal field splitting. These structural modifications result in enhanced photophysical properties: the luminescence lifetime (τobs), sensitization efficiency (ηsens) and quantum yield (QY) improve from 2.1 μs, 38% and 0.7% to 2.7 μs, 63% and 1.8%, respectively. Additionally, the dissymmetry factor (glum) and CPL brightness (BCPL) at 963 nm increase by 32% and one order of magnitude, respectively. The scope of such chemical modification is broad, encompassing a variety of BINOL derivatives, offering a unique platform to further elucidate the relationship between structural and electronic properties and CPL activity in lanthanide systems.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e202500910"},"PeriodicalIF":3.9,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143957778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0