Chinese Chemical Letters最新文献

{"title":"Glycosyl N-phenyl pentafluorobenzimidates as a new generation of imidate donors for catalytic glycosylation","authors":"Xin Zhou ,&nbsp;Guangyao Liu ,&nbsp;Meifang Yang ,&nbsp;Mengyu Li ,&nbsp;Xiaodi Yang ,&nbsp;Weiliang Gu ,&nbsp;Yitian Zhao ,&nbsp;Houchao Tao","doi":"10.1016/j.cclet.2024.110734","DOIUrl":"10.1016/j.cclet.2024.110734","url":null,"abstract":"<div><div>Glycosyl imidates are among the pioneering donors for catalytic glycosylation. We report a new generation of imidates featuring the presence of a pentafluorophenyl group, introduced <em>via</em> substitution on imidoyl fluoride which is easily prepared, stable and user-friendly. The resulting donors exhibit exceptional shelf stability while can be readily activated to achieve high-yielding glycosylation, encompassing comprehensively aldosyl, ketosyl and ulosonyl donors, and both <em>O</em>- and <em>N</em>-glycosylation acceptors. Notably, the reactivity gradient across different generations of imidates, coupled with the accessible imidate acceptor from selective reaction of imidoyl fluoride at the anomeric hydroxyl group, enables a fully catalytic one-pot synthesis of oligosaccharides.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 8","pages":"Article 110734"},"PeriodicalIF":9.4,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of radical halogen-bonded organic frameworks with enhanced magnetism and conductivity","authors":"Hong-Qiang Dong ,&nbsp;Shang-Bo Yu ,&nbsp;Shu-Meng Wang ,&nbsp;Jia-Hao Zhao ,&nbsp;Xu-Guan Bai ,&nbsp;Shi-Xing Lei ,&nbsp;Zhen-Nan Tian ,&nbsp;Jia Tian ,&nbsp;Kang-Da Zhang ,&nbsp;Lu Wang ,&nbsp;Zhan-Ting Li ,&nbsp;Shigui Chen","doi":"10.1016/j.cclet.2024.110730","DOIUrl":"10.1016/j.cclet.2024.110730","url":null,"abstract":"<div><div>The development of organic frameworks with radical skeletons is desired. In this study, we report the development of a novel two-dimensional radical halogen-bonded organic framework (XOF). The radical monomer, benzimidazole triphenylmethyl (BTTM), was synthesized through the coupling of TTM radicals with benzimidazole. Initially, the benzimidazole units were coordinated with Ag⁺ ions to create a [N<strong>···</strong>Ag<strong>···</strong>N]⁺ framework. Subsequently, the addition of iodine led to the in situ replacement of Ag⁺ with I⁺ ions, forming [N<strong>···</strong>I<strong>···</strong>N]⁺ linkers and resulting in the creation of the XOF structure. The resulting XOF-HBTTM and XOF-BTTM structures demonstrated good-crystallinity, confirmed by PXRD, HR-TEM, SEAD, and SAXS analyses. EPR measurements confirmed the preservation of radical characteristics within the XOF framework. Furthermore, SQUID measurements indicated that XOF-BTTM exhibits spin moments of <em>S</em> = 1/2 at 2 K, with a saturated magnetization strength peaking at 4.10 emu/g, a notable enhancement compared to 1.87 emu/g for the BTTM monomer. This improvement in magnetism is attributed to the extended spin density distribution and the presence of [N<strong>···</strong>I<strong>···</strong>N]⁺ interactions, as suggested by DFT calculations. Additionally, the radical XOF-BTTM exhibited significantly enhanced electrical conductivity, reaching up to 1.30 × 10⁻⁴ S/cm, which is two orders of magnitude higher than that of XOF-HBTTM. This increased conductivity is linked to a reduced HOMO-LUMO gap, higher carrier density, and the incorporation of triphenylmethyl radicals within the framework. This research highlights the potential of benzimidazolyl motifs in constructing functional XOFs and advances our understanding of radical organic frameworks.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 8","pages":"Article 110730"},"PeriodicalIF":9.4,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular engineering of dibenzo-heterocyclic core based hole-transporting materials for perovskite solar cells","authors":"Yajie Yang,&nbsp;Mengde Zhai,&nbsp;Haoxin Wang,&nbsp;Cheng Chen,&nbsp;Ziyang Xia,&nbsp;Chengyang Liu,&nbsp;Yi Tian,&nbsp;Ming Cheng","doi":"10.1016/j.cclet.2024.110700","DOIUrl":"10.1016/j.cclet.2024.110700","url":null,"abstract":"<div><div>Heterocyclic compounds play an important role in organic hole transport materials (HTMs) for perovskite solar cells (PSCs). Herein, a series of linear D-<em>π</em>-D HTMs (O<img>CBz, S-CBz, SO2-CBz) with different dibenzo-heterocycles core (dibenzofuran, dibenzothiophene, dibenzothiophene sulfone) were designed and synthesized, and their applications in PSCs were investigated. The intrinsic properties (CV, UV–vis, hole mobility and conductivity) were systematically investigated, demonstrating that all three materials are suitable HTMs for planar n-i-p type PSCs. Benefiting from the excellent hole mobility and conductivity, good film forming ability, and outstanding charge extraction and transport capability of S-CBz, FAPbI₃-based PSCs using S-CBz as HTM achieved a PCE of 25.0 %, which is superior to that of Spiro-OMeTAD-based PSCs fabricated under the same conditions (23.9 %). Furthermore, due to the interaction between S and Pb²⁺, S-CBz-based PSC devices exhibited improved stability. This work demonstrates that dibenzothiophene-based architectures are promising candidates for high-performance HTMs in perovskite solar cell architectures.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 5","pages":"Article 110700"},"PeriodicalIF":9.4,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Significantly boosting circularly polarized luminescence by synergy of helical and planar chirality","authors":"Fengying Ye ,&nbsp;Ming Hu ,&nbsp;Jun Luo ,&nbsp;Wei Yu ,&nbsp;Zhirong Xu ,&nbsp;Jinjin Fu ,&nbsp;Yansong Zheng","doi":"10.1016/j.cclet.2024.110724","DOIUrl":"10.1016/j.cclet.2024.110724","url":null,"abstract":"<div><div>To get large dissymmetric factor (<em>g</em>_lum) of organic circularly polarized luminescence (CPL) materials is still a great challenge. Although helical chirality and planar chirality are usual efficient access to enhancement of CPL, they are not combined together to boost CPL. Here, a new tetraphenylethylene (TPE) tetracycle acid helicate bearing both helical chirality and planar chirality was designed and synthesized. Uniquely, synergy of the helical chirality and planar chirality was used to boost CPL signals both in solution and in helical self-assemblies. In the presence of octadecylamine, the TPE helicate could form helical nanofibers that emitted strong CPL signals with an absolute <em>g</em>_lum value up to 0.237. Exceptionally, followed by addition of <em>para</em>-phenylenediamine, the <em>g</em>_lum value was successively increased to 0.387 due to formation of bigger helical nanofibers. Compared with that of TPE helicate itself, the CPL signal of the self-assemblies was not only magnified by 104-fold but also inversed, which was very rare result for CPL-active materials. Surprisingly, the interaction of TPE helicate with xylylenediamine even gave a gel, which was transformed into suspension by shaking. Unexpectedly, the suspension showed 40-fold stronger CPL signals than the gel with signal direction inversion each other. Using synergy of the helical chirality and planar chirality to significantly boost CPL intensity provides a new strategy in preparation of organic CPL materials having very large <em>g</em>_lum value.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 5","pages":"Article 110724"},"PeriodicalIF":9.4,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel N-stable Co2P nano-catalyst for the synthesis of quinoxalines by annulation of alkynes and 1,2-diaminobenzenes","authors":"Xiaochun Liu ,&nbsp;Gaoyan Chen ,&nbsp;Xiaodong Yue ,&nbsp;Chaoyue Wang ,&nbsp;Xue-Xin Zhang ,&nbsp;Xuecheng Ran ,&nbsp;Yingxiao Zong ,&nbsp;Junke Wang ,&nbsp;Xicun Wang","doi":"10.1016/j.cclet.2024.110707","DOIUrl":"10.1016/j.cclet.2024.110707","url":null,"abstract":"<div><div>Designing efficient, recyclable, and low-cost catalysts is crucial for the synthesis of quinoxaline derivatives. In this context, a novel <em>N</em>-stable Co₂P nano-catalyst (CoP@N<img>C-1.5) was developed using a template-sacrificial approach. The catalyst demonstrated a broad substrate scope and good functional group tolerance, achieving yields of up to 84 %. Additionally, the catalyst exhibited reusability and can be recycled up to three times. The CoP@N<img>C-1.5 was characterized using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results indicated that the catalyst contained Co₂P nanoparticles. The X-ray photoelectron spectroscopy (XPS) further confirms the presence of Co-P. Analysis of the characterization data and experimental results revealed that the active site of the catalyst comprises <em>N</em>-stable Co₂P nanoparticles.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 8","pages":"Article 110707"},"PeriodicalIF":9.4,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting the first CH bond activation of propane on rod-like V/CeO2 catalyst by photo-assisted thermal catalysis","authors":"Xiangyang Ji ,&nbsp;Yishuang Chen ,&nbsp;Peng Zhang ,&nbsp;Shaojia Song ,&nbsp;Jian Liu ,&nbsp;Weiyu Song","doi":"10.1016/j.cclet.2024.110719","DOIUrl":"10.1016/j.cclet.2024.110719","url":null,"abstract":"<div><div>Crystalized CeO₂ structures were typically considered potential photocatalysts due to their great capacity to alter the active sites’ size and ability to absorb light. However, the controllable fabrication of well-defined hierarchical structures of CeO₂ with high reactive facets is significant and challenging. Herein, a series of CeO₂ supports including hierarchical flower-like (F-CeO₂), ball-like (B-CeO₂), cube-like (C<img>CeO₂), and rod-like CeO₂(R-CeO₂) supports were prepared by hydrothermal method (B-CeO₂, R-CeO₂ and C<img>CeO₂) or ice-bath method (F-CeO₂) respectively. V atoms were selected as the active atoms and loaded on these supports. Their structure-activity relationship in photo-assisted thermal propane dehydrogenation (PTPDH) was investigated systematically. The samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, N₂ adsorption-desorption isotherms, and Fourier transform infrared spectrum. Results show that R-CeO₂ support exhibits the biggest surface area thus achieving the best dispersion of VO_x species. UV–vis spectrum and photoluminescence spectrum indicate that V/F-CeO₂ has the best light adsorption property and V/R-CeO₂ has the best carrier migration capacity. The activity tests demonstrate that the V/R-CeO₂ has the largest net growth rate and the V/F-CeO₂ has the biggest relative growth ratio. Furthermore, the non-thermal effect was confirmed by the kinetic method, which lowers the propane reaction orders, selectively promoting the first C<img>H bond activation. The light radiation TPSR experiment confirmed this point. DFT calculations show a good linear relationship between the energy barrier and the exchanged electron number. It inspires the design of high-reactive facets for boosting the intrinsic activity of the C<img>H bond in photo-assisted thermal chemical processes.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 5","pages":"Article 110719"},"PeriodicalIF":9.4,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pyridine-based ionic sp2 carbon-conjugated covalent organic frameworks for selective extraction of Pu(IV) from high-level liquid waste","authors":"Li-Ying Wang ,&nbsp;Jun-Jie Yu ,&nbsp;Shuai Wang ,&nbsp;Yang Liu ,&nbsp;Ke-Xian Song ,&nbsp;Ji-Pan Yu ,&nbsp;Li-Yong Yuan ,&nbsp;Zhi-Rong Liu ,&nbsp;Wei-Qun Shi","doi":"10.1016/j.cclet.2024.110706","DOIUrl":"10.1016/j.cclet.2024.110706","url":null,"abstract":"<div><div>In the current era marked by energy shortages, the advancement of nuclear energy stands as an inevitable progression. The reprocessing of spent nuclear fuel plays a crucial role in determining the sustainability of nuclear energy as a viable energy source. Among these processes, the separation and recovery of Pu(IV) from high-level liquid waste (HLLW) hold paramount significance in terms of safety and strategic implications. Herein, this work focused on the synthesis of two acid- and radiation-resistant pyridine-based sp²c-COFs (COF-IHEP3 and COF-IHEP4), followed by the creation of two pyridine-based ionized sp²c-COFs named COF-IHEP3-CH₃NO₃ and COF-IHEP4-CH₃NO₃ through post-modification. These materials have potential anion exchange capacity for the selective separation of Pu(IV) in highly acidic conditions. Notably, in 8 mol/L nitric acid solution, COF-IHEP3-CH₃NO₃ demonstrated the capability to eliminate plutonium within 20 min in 98% removal efficiency with a <em>K</em>_d value of 2450 mL/g. Experimental and theoretical analysis suggest that the ionized sp²c-COFs exhibit exceptional stability, selectivity, and prevention of secondary contamination towards Pu(IV) in the presence of multiple ions environments. In short, this work provides an appropriate anion exchange strategy to design ionic sp²c-COFs as a promising platform for Pu(IV) recovery from HLLW.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 8","pages":"Article 110706"},"PeriodicalIF":9.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Expeditious synthesis and applications of isoquinoline ring-modified Quinap derivatives","authors":"Guodong Wang ,&nbsp;Mengying Jia ,&nbsp;Haitao Liu ,&nbsp;Yong Liu ,&nbsp;Zhiguo Zhang ,&nbsp;Xianxiu Xu","doi":"10.1016/j.cclet.2024.110705","DOIUrl":"10.1016/j.cclet.2024.110705","url":null,"abstract":"<div><div>A wide range of isoquinoline ring-modified Quinap oxides with different steric and electronic variations have been constructed through a palladium-catalyzed imidoylative cyclization of arylethenyl isocyanides with 2-diphenylphosphinyl-1-naphthyl bromides. The Pd-catalysis plays dual roles in the formation of both axial C–C bond and isoquinoline ring. This de novo synthetic strategy features good functional group tolerance, high yields and easy scale-up, providing Quinap derivatives with substitution patterns that could not be obtained using coupling reactions. Chiral ligands 7 and 12 can be readily prepared by transformation of the resulting Quinap oxide to their BINOL esters, and have been proven to be superb chiral ligands for the copper-catalyzed enantioselective A³-coupling and alkynylation of quinoline reactions. In general, the enantioselectivies obtained using ligands 7 and 12 are excellent, and the ee values are higher than those using Quinap as ligand, even three times higher in some cases. Mechanism studies revealed that a monomeric copper(I) complex bearing a single chiral ligand was formed and served as the catalytically active species.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 8","pages":"Article 110705"},"PeriodicalIF":9.4,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance optimization of aqueous Zn/MnO2 batteries through the synergistic effect of PVP intercalation and GO coating","authors":"Shilong Li ,&nbsp;Ming Zhao ,&nbsp;Yefei Xu ,&nbsp;Zhanyi Liu ,&nbsp;Mian Li ,&nbsp;Qing Huang ,&nbsp;Xiang Wu","doi":"10.1016/j.cclet.2024.110701","DOIUrl":"10.1016/j.cclet.2024.110701","url":null,"abstract":"<div><div>Manganese dioxide (MnO₂) electrode material possesses the advantages of high energy density, structural diversity and high modification potential. This allows it become one of the important cathodes for aqueous zinc ion battery. However, the applications are limited by the poor electrical conductivity, narrow layer spacing and the ease of dissolution. Herein, we prepare MnO₂[email protected] composites by the co-modification of polyvinylpyrrolidone (PVP) pre-insertion layer and graphene oxide (GO) self-assembly layer. The Zn//MnO₂[email protected] cells deliver a discharge specific capacity of 442 mAh/g at a current density of 0.2 A/g. It also maintains 100 % capacity for 1000 times cycling at 1 A/g. The assembled soft package batteries demonstrate superior flexibility and adaptability under different bending conditions.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 3","pages":"Article 110701"},"PeriodicalIF":9.4,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143318150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial-confinement combustion strategy enabling free radicals chemiluminescence direct-measurement in flame-retardant mechanism","authors":"Xuan Song,&nbsp;Teng Fu,&nbsp;Yajie Yang,&nbsp;Yahan Kuang,&nbsp;Xiuli Wang,&nbsp;Yu-Zhong Wang","doi":"10.1016/j.cclet.2024.110699","DOIUrl":"10.1016/j.cclet.2024.110699","url":null,"abstract":"<div><div>Generally, gaining fundamental insights into chain processes during the combustion of flame-retardant polymers relies on the qualitative and quantitative characterization of key chain carriers. However, polymer combustion processes based on conventional solid-fuel combustion strategies, due to the high coupling of pyrolysis, combustion, soot formation and oxidation, exhibit relatively high complexity and poor flame stability, and lead to a huge obstacle to the use of optical diagnostics. Herein, a spatial-confinement combustion strategy, which can produce a special staged flame with multi-jets secondary wave, is devised to provide a highly decoupled combustion environment. Glowing soot particles are therefore decoupled from main chemiluminescence region and confined to the flame tip to provide a well-controlled, optical-thin test environment for combustion diagnostic. Based on this strategy, a multi-nozzle-separation (MNS) burner is designed and fabricated, and the combustion processes associated with four model compounds, PVC, PS, PP/TBBA blends and PP/RP blends are investigated by spontaneous spectral diagnosis, and the chemiluminescence fingerprint of key diatomic/triatomic intermediates (such as OH, CH, C₂, ClO, Br₂, and PHO) are clearly observed. This encouraging result means that the strategy of spatial-confinement combustion we proposed shows promising prospect in many subjects associated with combustion chain regulation, such as efficient design of flame retardants.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 5","pages":"Article 110699"},"PeriodicalIF":9.4,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}