Chinese Chemical Letters最新文献_第8页

Synthetic Cu(III) from copper plating wastewater for onsite decomplexation of Cu(II)- and Ni(II)-organic complexes 从镀铜废水中合成 Cu(III)，用于现场解络合 Cu(II)-和 Ni(II)-有机络合物

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-10-14 DOI: 10.1016/j.cclet.2024.110549

Junyi Yu , Yin Cheng , Anhong Cai , Xianfeng Huang , Qingrui Zhang

{"title":"Synthetic Cu(III) from copper plating wastewater for onsite decomplexation of Cu(II)- and Ni(II)-organic complexes","authors":"Junyi Yu , Yin Cheng , Anhong Cai , Xianfeng Huang , Qingrui Zhang","doi":"10.1016/j.cclet.2024.110549","DOIUrl":"10.1016/j.cclet.2024.110549","url":null,"abstract":"<div><div>Herein, the Cu(III) synthesized from copper plating effluent was developed for the first time to evaluate the onsite degradation performance of heavy metal complexes in the wastewater, thus achieving the purpose of “treating waste with waste”. The results indicated that synthetic Cu(III) presented the excellent decomplexation performance for Cu(II)/Ni(II)-organic complexes. The removal efficiency of Cu(II)/Ni(II)-EDTA significantly increased with increasing Cu(III) dosage, and the degradation of Cu(II)/Ni(II)-EDTA by synthetic Cu(III) system displayed highly pH-dependent reactivity. The radical quencher experiments confirmed that Cu(III) direct oxidation were mainly involved in the degradation of Cu(II)-EDTA. Additionally, the continuous decarboxylation process was proven to be the main degradation pathway of Cu(II)-EDTA in Cu(III) system. The coexisting substances (SO<sub>4</sub><sup>2−</sup>, Cl<sup>−</sup> and fulvic acids) showed little impacts at low level for the removal of Cu(II)/Ni(II)-EDTA, while retarded the degradation of Cu(II)-EDTA slightly at high level, which features high selective oxidation. Encouragingly, it was also effective to remove Cu(II)/Ni(II)-EDTA from in treating actual Cu/Ni-containing wastewater through synthetic Cu(III) treatment.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 2","pages":"Article 110549"},"PeriodicalIF":9.4,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699589","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}

引用次数: 0

Catalyst-free, visible-light-induced [2π + 2σ] cycloaddition towards azabicyclohexanes

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-10-12 DOI: 10.1016/j.cclet.2024.110540

Min Yan, Zihao Ye, Ping Lu

引用次数: 0

Recent advances in directing group assisted transition metal catalyzed para-selective C-H functionalization

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-10-11 DOI: 10.1016/j.cclet.2024.110543

Wei-Bin Li , Xiao-Chao Huang , Pei Liu , Jie Kong , Guo-Ping Yang

{"title":"Recent advances in directing group assisted transition metal catalyzed para-selective C-H functionalization","authors":"Wei-Bin Li , Xiao-Chao Huang , Pei Liu , Jie Kong , Guo-Ping Yang","doi":"10.1016/j.cclet.2024.110543","DOIUrl":"10.1016/j.cclet.2024.110543","url":null,"abstract":"<div><div>The transition metal-catalyzed C<img>H activation have been considered as increasingly useful approach for installing new functional groups onto organic small molecules due to their high step- and atom-economy, the abundance of hydrocarbon compounds, and the potential for late-stage functionalization of complex organic molecules. The <em>ortho</em>- and <em>meta</em>-C-H activation and functionalization of aromatic compounds have been widely explored in recent years, however the distal <em>para</em>-C-H activation and functionalization has remained a significant challenge because of the difficulty in forming energetically favorable metallacyclic transition states. The utilization of appropriate directing groups or templates as well as the meticulous design of catalysts and ligands has proven to be effective in transition-metal-catalyzed remote <em>para</em>-C-H bonds activation and functionalization of aromatic compounds. This review aims to summarize the strategies for controlling <em>para</em>-selective C<img>H functionalization using the directing group, template engineering, and catalyst/ligand design under transition metals catalysis in recent years.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 6","pages":"Article 110543"},"PeriodicalIF":9.4,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696850","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}

引用次数: 0

Recent advances of CuSbS2 and CuPbSbS3 as photocatalyst in the application of photocatalytic hydrogen evolution and degradation

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-10-10 DOI: 10.1016/j.cclet.2024.110533

Xinlong Zheng , Zhongyun Shao , Jiaxin Lin , Qizhi Gao , Zongxian Ma , Yiming Song , Zhen Chen , Xiaodong Shi , Jing Li , Weifeng Liu , Xinlong Tian , Yuhao Liu

{"title":"Recent advances of CuSbS2 and CuPbSbS3 as photocatalyst in the application of photocatalytic hydrogen evolution and degradation","authors":"Xinlong Zheng , Zhongyun Shao , Jiaxin Lin , Qizhi Gao , Zongxian Ma , Yiming Song , Zhen Chen , Xiaodong Shi , Jing Li , Weifeng Liu , Xinlong Tian , Yuhao Liu","doi":"10.1016/j.cclet.2024.110533","DOIUrl":"10.1016/j.cclet.2024.110533","url":null,"abstract":"<div><div>The realization of high-efficiency photocatalysis is greatly meaningful to overcome the issues of current energy and environment, in which the core factor is the exploration of photocatalysts with promising semiconductor properties. The Cu-based metal sulfide photocatalysts of CuSbS<sub>2</sub> and its derivative of bournonite CuPbSbS<sub>3</sub> possess the features of earth-abundant elements, strong photostability, visible-light range bandgap, and high absorption coefficient, possessing great potential for the realization of efficient photocatalytic applications. Although the photocatalysts of CuSbS<sub>2</sub> and CuPbSbS<sub>3</sub> have been investigated in photocatalysis application of hydrogen production and degradation, the exploration process is still in the early-development stage. In this review, the design concept and semiconductor properties of CuSbS<sub>2</sub> and CuPbSbS<sub>3</sub> are firstly introduced. Subsequently, the photocatalytic applications of CuSbS<sub>2</sub> and CuPbSbS<sub>3</sub> photocatalysts, mainly including hydrogen production and degradation, are systematically reviewed. Finally, the challenges and prospects for the further exploration of CuSbS<sub>2</sub> and CuPbSbS<sub>3</sub> photocatalysts are provided.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 3","pages":"Article 110533"},"PeriodicalIF":9.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143318379","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}

引用次数: 0

Evaluating the global thiols redox state in living cells using a reducing sulfur species responsive fluorescence switching platform

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-10-10 DOI: 10.1016/j.cclet.2024.110528

Hui Zhang , Rong Feng , Wanyi Yu , Hongbei Wei , Tianhong Wu , Peng Zhang , Wenhai Bian , Xin Li , Di Gao , Guojun Weng , Zhe Yang , Tony D. James , Xiaolong Sun

{"title":"Evaluating the global thiols redox state in living cells using a reducing sulfur species responsive fluorescence switching platform","authors":"Hui Zhang , Rong Feng , Wanyi Yu , Hongbei Wei , Tianhong Wu , Peng Zhang , Wenhai Bian , Xin Li , Di Gao , Guojun Weng , Zhe Yang , Tony D. James , Xiaolong Sun","doi":"10.1016/j.cclet.2024.110528","DOIUrl":"10.1016/j.cclet.2024.110528","url":null,"abstract":"<div><div>Redox dyshomeostasis is a critical factor in the initiation of numerous diseases, making the accurate evaluation of the redox status of the cellular environment an important aspect of physiological research. However, maintaining redox homeostasis relies on a complex and dynamic physiological system involving multiple substrate-enzyme interactions, so its accurately detection remains a challenge. With this research, we developed an activable fluorescence switching platform by incorporating different conjugate acceptors to a fluorophore using ester bonds and resulting in fluorescence quenching due to donor-excited photo-induced electron transfer (<em>d</em>-PeT), which was confirmed through density functional theory calculations. The reaction-based probe was deployed for recognizing all major intracellular reducing sulfur species (RSS), including H<sub>2</sub>S, cysteine (Cys), homocysteine (Hcy), glutathione (GSH), and protein free thiols. The quenched fluorescence was significantly recovered by RSS, through releasing the fluorophore and diminishing the <em>d</em>-PeT effect. Furthermore, the fluorescent probe was used for the sensing and imaging RSS in living cells, demonstrating good cell-permeability, low cytotoxicity, and negative correlation with reactive oxygen species content, enabling the evaluating of global thiols redox state in HepG2 cellular lines during ferroptosis processes.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 4","pages":"Article 110528"},"PeriodicalIF":9.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149449","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}

引用次数: 0

Modulating d-d orbitals coupling in PtPdCu medium-entropy alloy aerogels to boost pH-general methanol electrooxidation performance

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-10-10 DOI: 10.1016/j.cclet.2024.110532

Kaili Wang , Pengcheng Liu , Mingzhe Wang , Tianran Wei , Jitao Lu , Xingling Zhao , Zaiyong Jiang , Zhimin Yuan , Xijun Liu , Jia He

{"title":"Modulating d-d orbitals coupling in PtPdCu medium-entropy alloy aerogels to boost pH-general methanol electrooxidation performance","authors":"Kaili Wang , Pengcheng Liu , Mingzhe Wang , Tianran Wei , Jitao Lu , Xingling Zhao , Zaiyong Jiang , Zhimin Yuan , Xijun Liu , Jia He","doi":"10.1016/j.cclet.2024.110532","DOIUrl":"10.1016/j.cclet.2024.110532","url":null,"abstract":"<div><div>Unraveling the essence of electronic structure effected by d-d orbital coupling of transition metal and methanol oxidation reaction (MOR) performance can fundamentally guide high efficient catalyst design. Herein, density functional theory (DFT) calculations were performed at first to study the d–d orbital interaction of metallic PtPdCu, revealing that the incorporation of Pd and Cu atoms into Pt system can enhance d-d electron interaction <em>via</em> capturing antibonding orbital electrons of Pt to fill the surrounding Pd and Cu atoms. Under the theoretical guidance, PtPdCu medium entropy alloy aerogels (PtPdCu MEAAs) catalysts have been designed and systematically screened for MOR under acid, alkaline and neutral electrolyte. Furthermore, DFT calculation and <em>in-situ</em> fourier transform infrared spectroscopy analysis indicate that PtPdCu MEAAs follow the direct pathway <em>via</em> formate as the reactive intermediate to be directly oxidized to CO<sub>2</sub>. For practical direct methanol fuel cells (DMFCs), the PtPdCu MEAAs-integrated ultra-thin catalyst layer (4∼5 μm thickness) as anode exhibits higher peak power density of 35 mW/cm<sup>2</sup> than commercial Pt/C of 20 mW/cm<sup>2</sup> (∼40 μm thickness) under the similar noble metal loading and an impressive stability retention at a 50-mA/cm<sup>2</sup> constant current for 10 h. This work clearly proves that optimizing the intermediate adsorption capacity <em>via</em> d-d orbital coupling is an effective strategy to design highly efficient catalysts for DMFCs.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 4","pages":"Article 110532"},"PeriodicalIF":9.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098703","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}

引用次数: 0

Accessing polyarene-fused ten-membered lactams via oxidative N-heterocyclic carbene (NHC)-catalyzed high-order [7 + 3] annulation

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-10-10 DOI: 10.1016/j.cclet.2024.110541

Chen-Chang Cui , Shao-Qing Shi , Lu-Yao Wang , Feng Lin , Man-Su Tu , Wen-Juan Hao , Bo Jiang

引用次数: 0

Advances in photocatalytic deracemization of sp3-hybridized chiral centers via hydrogen atom transfer

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-30 DOI: 10.1016/j.cclet.2024.110521

Yuan Liu, Zhu Yin, Xintuo Yang, Jiajia Cheng

{"title":"Advances in photocatalytic deracemization of sp3-hybridized chiral centers via hydrogen atom transfer","authors":"Yuan Liu, Zhu Yin, Xintuo Yang, Jiajia Cheng","doi":"10.1016/j.cclet.2024.110521","DOIUrl":"10.1016/j.cclet.2024.110521","url":null,"abstract":"<div><div>The enantioselective separation of racemate, particularly those containing C(sp<sup>3</sup>)-H bonds knowns for their high bond dissociation energies and significant polarity, presents a significant challenge in pharmaceutical synthesis. Recent advances have witnessed the fusion of photocatalysis with hydrogen atom transfer (HAT) methodologies, marking a notable trend in synthesis of chiral molecules. This technique uses the excitation of a catalyst to activate substrates, enabling the selective isomerization of chiral centers containing C(sp<sup>3</sup>) configurations. This process distinctively facilitates the direct activation of the C(sp<sup>3</sup>)-H bond in targeted reagents. This review systematically discusses the photocatalytic isomerization of various chiral molecule featuring C(sp<sup>3</sup>)-H centers, capable of undergoing deracemization through two primary HAT mechanisms: direct and indirect pathways. From the perspective of synthetic organic chemistry, this field has progressed towards the development of isomerization strategies for molecules that incorporate an activating group at the α-position adjacent to the C(sp<sup>3</sup>) chiral center. Moreover, it covers methodologies applicable to molecules characterized by specific C-C and C-S bond configurations. The integration of photocatalysis with HAT technology thus provides valuable strategies for the synthesis of enantiopure compounds with enhanced selectivity and efficiency.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 5","pages":"Article 110521"},"PeriodicalIF":9.4,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143550451","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}

引用次数: 0

“Super-heterojunctioned” thermoelectric polymers "超级热结 "热电聚合物

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-30 DOI: 10.1016/j.cclet.2024.110523

Hanying Li , Wee-Liat Ong

引用次数: 0

Boron cluster-based TADF emitter via through-space charge transfer enabling efficient orange-red electroluminescence

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-30 DOI: 10.1016/j.cclet.2024.110520

Xiao Yu , Dongyue Cui , Mengmeng Wang , Zhaojin Wang , Mengzhu Wang , Deshuang Tu , Vladimir Bregadze , Changsheng Lu , Qiang Zhao , Runfeng Chen , Hong Yan

{"title":"Boron cluster-based TADF emitter via through-space charge transfer enabling efficient orange-red electroluminescence","authors":"Xiao Yu , Dongyue Cui , Mengmeng Wang , Zhaojin Wang , Mengzhu Wang , Deshuang Tu , Vladimir Bregadze , Changsheng Lu , Qiang Zhao , Runfeng Chen , Hong Yan","doi":"10.1016/j.cclet.2024.110520","DOIUrl":"10.1016/j.cclet.2024.110520","url":null,"abstract":"<div><div>Thermally activated delayed fluorescence (TADF) materials driven by a through-space charge transfer (TSCT) mechanism have garnered wide interest. However, access of TSCT-TADF molecules with long-wavelength emission remains a formidable challenge. In this study, we introduce a novel V-type D-A-D-A' emitter, Trz-<em>m</em>CzCbCz, by using a carborane scaffold. This design strategically incorporates carbazole (Cz) and 2,4,6-triphenyl-1,3,5-triazine (Trz) as donor and acceptor moieties, respectively. Theoretical calculations alongside experimental validations affirm the typical TSCT-TADF characteristics of this luminogen. Owing to the unique structural and electronic attributes of carboranes, Trz-<em>m</em>CzCbCz exhibits an orange-red emission, markedly diverging from the traditional blue-to-green emissions observed in classical Cz and Trz-based TADF molecules. Moreover, bright emission in aggregates was observed for Trz-<em>m</em>CzCbCz with absolute photoluminescence quantum yield (PLQY) of up to 88.8 %. As such, we have successfully fabricated five organic light-emitting diodes (OLEDs) by utilizing Trz-<em>m</em>CzCbCz as the emitting layer. It is important to note that both the reverse intersystem crossing process and the TADF properties are profoundly influenced by host materials. The fabricated OLED devices reached a maximum external quantum efficiency (EQE) of 12.7 %, with an emission peak at 592 nm. This represents the highest recorded efficiency for TSCT-TADF OLEDs employing carborane derivatives as emitting layers.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 3","pages":"Article 110520"},"PeriodicalIF":9.4,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143356836","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}

引用次数: 0