Bulletin of the Korean Chemical Society最新文献_第3页

Manual grinding mechanochemistry: An emerging tool for environmentally benign and sustainable synthesis 手工研磨机械化学：一种环保和可持续合成的新兴工具

IF 2.2 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2025-07-03 DOI: 10.1002/bkcs.70045

Hee Sun Park, Nam Hwi Hur

引用次数: 0

Synthesis and characterization of diketopyrrolopyrrole-based conjugated polymer with biphenyl for organic photovoltaic cells 有机光伏电池用二酮吡咯吡咯基联苯共轭聚合物的合成与表征

IF 1.7 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2025-07-03 DOI: 10.1002/bkcs.70042

Landep Ayuningtias, Jae Yeol Ma, Yu-Jin Kim, Yun-Hi Kim

{"title":"Synthesis and characterization of diketopyrrolopyrrole-based conjugated polymer with biphenyl for organic photovoltaic cells","authors":"Landep Ayuningtias, Jae Yeol Ma, Yu-Jin Kim, Yun-Hi Kim","doi":"10.1002/bkcs.70042","DOIUrl":"https://doi.org/10.1002/bkcs.70042","url":null,"abstract":"Designing a moderate band gap is sometimes intentionally chosen. When the donor polymer has a deeper HOMO level, a higher Voc can be gained which boosts total PCE in organic photovoltaics (OPVs) (Liao et al., Joule 2020, 4(1), 189–206; Mamba et al., J. Phys. Chem. A 2021, 125(50), 10593–10603; Choi and Jo, Org. Electron. 2013, 14(6), 1621–1628; Jo et al., Org. Electron. 2012, 13(10), 2185–2191). This is crucial in DPP-based copolymer frameworks, which frequently have short band gaps and may experience poor Voc. Since DPP is a low bandgap due to strong-acceptor, thus, modifying it with weak donor units can raise the bandgap and lower the HOMO to make it suitable for multi-junctions or higher Voc. We report the synthesis, properties, and photovoltaic applications of a donor-acceptor (D-A) conjugated copolymer based on diketopyrrolopyrrole (DPP) and biphenyl, namely PDDPPhenyl. This polymer exhibits broad absorption ranging from 400 to 900 nm with a band gap of 1.59 eV. As expected, a low HOMO level of −5.29 was gained by introducing biphenyl as a weaker donor. The optimized weight ratio goes to 1:4 for PDPPPhenyl:PC71BM with 3.8% PCE.","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 7","pages":"754-760"},"PeriodicalIF":1.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144666304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Insight into the functional and structural relationship of ornithine decarboxylase and its mutants from Lacticaseibacillus rhamnosus 鼠李糖乳杆菌鸟氨酸脱羧酶及其突变体功能与结构关系的研究

IF 1.7 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2025-06-25 DOI: 10.1002/bkcs.70035

Nonvide Nicolas Adiko, Hyeon Tae Seo, Dae-Won Ki, Jung Hee Park, Da Som Kim

{"title":"Insight into the functional and structural relationship of ornithine decarboxylase and its mutants from Lacticaseibacillus rhamnosus","authors":"Nonvide Nicolas Adiko, Hyeon Tae Seo, Dae-Won Ki, Jung Hee Park, Da Som Kim","doi":"10.1002/bkcs.70035","DOIUrl":"https://doi.org/10.1002/bkcs.70035","url":null,"abstract":"Ornithine decarboxylase (ODC) is a critical enzyme in the polyamine biosynthesis pathway that catalyzes the conversion of l-ornithine to putrescine using pyridoxal 5′-phosphate (PLP). Lactobacilli act probiotically by stimulating the immune system, defending against pathogens, and mitigating the impact of various chronic illnesses. To better understand the function and structure of ODC from Lacticaseibacillus rhamnosus (LrODC-WT), we investigated its enzymatic activity, kinetic characteristics, crystal structure, and further examined a variety of single-residue mutants. We found that active LrODC-WT has the following kinetic parameters: KM 6.83 ± 1.01 mM, kcat 1.44 ± 0.1 s−1, and kcat/KM 210.83 ± 19.37 M−1 s−1. Unlike LrODC-WT, H346A, F186A, H216F, and E281Q showed no catalytic activity. H346A showed maximum unfolding at 2 M guanidine hydrochloride (GdnHCl), while the other enzymes exhibited peak unfolding effects at 1 M, indicating that H346A shows higher resistance to GdnHCl. The PLP binding in LrODCs using a UV/Vis spectrometer showed that LrODC-WT possesses high PLP, while F186A and H346A demonstrated 50% PLP of LrODC-WT, and absent in H216F and E281Q. The crystal structure of LrODC-WT was identified as a tetramer in which PLP was bound to all four subunits and interacted with residue K347 for Schiff base formation. While the crystal structures of H216F and H346A form dimers, an LrODC-WT tetramer can form via hydrogen bonding of D544 and N270. An improved understanding of the structure and function of LrODCs is relevant for controlling its polyamine production and for optimizing L. rhamnosus strains for use as a more potent probiotic.","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 7","pages":"730-742"},"PeriodicalIF":1.7,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bkcs.70035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144666486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Cover Picture: α-Azaaryl Carbonyl Derivatives in Stereodivergent Catalytic Reactions (BKCS 6/2025) Ilwoo Song, Byungjun Kim, Hooseung Lee, Sarah Yunmi Lee 封面图：立体发散催化反应中的α-氮杂基羰基衍生物(BKCS 6/2025

IF 1.7 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2025-06-25 DOI: 10.1002/bkcs.12866

引用次数: 0

Research progress of cobalt selenide anode materials for metal-ion battery 金属离子电池用硒化钴负极材料研究进展

IF 1.7 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2025-06-24 DOI: 10.1002/bkcs.70043

Jiaxin Guo, Hongsheng Jiang, Shengkai Li, Jinliang Lin, Donghui Liu, Qi Wang, Bin Feng

{"title":"Research progress of cobalt selenide anode materials for metal-ion battery","authors":"Jiaxin Guo, Hongsheng Jiang, Shengkai Li, Jinliang Lin, Donghui Liu, Qi Wang, Bin Feng","doi":"10.1002/bkcs.70043","DOIUrl":"https://doi.org/10.1002/bkcs.70043","url":null,"abstract":"As the demand for large-scale energy storage systems increases, so do market expectations for battery performance, especially in electrochemical properties. Against this background, electrode materials with excellent theoretical capacity and unique structures, such as cobalt selenide (CoSe2), have received significant attention from the research community for their potential in large-scale energy storage systems. These materials exhibit excellent electrochemical properties, including long cycle life, high stability, high energy density, and efficient charge/discharge performance. However, CoSe2 anode materials still face volume expansion and conductivity degradation in practical applications, affecting battery performance and lifetime. To address these challenges, researchers have proposed a variety of innovative strategies. This paper provides an in-depth evaluation of these strategies and analyzes their potential for practical applications. It is shown that by designing special structural materials, shortening the ion migration path, and increasing the contact area, the electrochemical performance can be effectively enhanced and the performance degradation caused by volume change can be suppressed. With technological advances, it is expected that battery performance will be significantly improved, driving the development of more efficient and environmentally friendly energy solutions.","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 7","pages":"704-729"},"PeriodicalIF":1.7,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144666408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

EpCAM and CD24 specific EVRNA analysis for ovarian cancer diagnosis EpCAM和CD24特异性EVRNA分析在卵巢癌诊断中的应用

IF 1.7 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2025-06-23 DOI: 10.1002/bkcs.70041

Yejin Kim, Da Han Hyun, Yoon Hee Lee, Woojeong Lim, Hoyeon Lee, Soyeon Lee, Hyeon-Ki Jang, Joohyun Lim, Dae Gy Hong, Jun Seok Park, Soo Yeun Park, Jongmin Park

引用次数: 0

Biphenylyl-N-ethylethanamines induce ERK phosphorylation through 5-HT7R-Gs signaling pathway 联苯- n -乙基乙胺通过5-HT7R-Gs信号通路诱导ERK磷酸化

IF 1.7 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2025-06-19 DOI: 10.1002/bkcs.70030

Eunseo Park, Jieon Lee, Jinhyuk Kim, Gyeongmin Kim, Hyunah Choo, Taek Kang, Byungsun Jeon, Ansoo Lee

引用次数: 0

Tough hydrogel designs for stable aqueous zinc ion batteries 坚固的水凝胶设计用于稳定的水性锌离子电池

IF 1.7 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2025-06-13 DOI: 10.1002/bkcs.70040

Saehyun Kim, Youn Soo Kim

引用次数: 0

Fast and stable cycling of 2,6-diaminoanthraquinone as a redox-active organic cathode for sodium-ion batteries 2,6-二氨基蒽醌作为钠离子电池氧化还原活性有机阴极的快速稳定循环

IF 1.7 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2025-06-09 DOI: 10.1002/bkcs.70038

Honggyu Seong, Youngseok Chang, Jaewon Choi

{"title":"Fast and stable cycling of 2,6-diaminoanthraquinone as a redox-active organic cathode for sodium-ion batteries","authors":"Honggyu Seong, Youngseok Chang, Jaewon Choi","doi":"10.1002/bkcs.70038","DOIUrl":"https://doi.org/10.1002/bkcs.70038","url":null,"abstract":"Sodium-ion batteries (SIBs) have attracted considerable attention due to their electrochemical similarity to lithium-ion batteries. One approach to advancing the SIB system involves the use of redox-active compounds as sustainable cathode materials. Organic compounds offer the advantage of tunable electrochemical properties, which can be modulated by altering their molecular structures. In this study, the commercially available 2,6-diaminoanthraquinone (2,6-DAAQ) was investigated as a potential cathode material for SIBs. Its sodium-ion storage capabilities were investigated through a combination of electrochemical measurements and density functional theory (DFT) calculations. In addition, the insertion of two Na+ ions into the 2,6-DAAQ cathode was analyzed via ex situ ATR FT-IR spectroscopy. The results indicate that the carbonyl groups participate in the redox processes during charge–discharge cycling. The 2,6-DAAQ cathode also exhibited excellent cycling stability and rate capability, which can be attributed to its dominant capacitive behavior. Overall, 2,6-DAAQ demonstrated reversible sodium-ion storage, highlighting its potential as a stable organic cathode for next-generation SIBs.","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 7","pages":"666-672"},"PeriodicalIF":1.7,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bkcs.70038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144666411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Cp*Co(III)-catalyzed C–H functionalization of bioactive heterocyclic motifs Cp*Co（III）催化的C-H功能化生物活性杂环基序

IF 1.7 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2025-06-05 DOI: 10.1002/bkcs.70031

Yeongmi Park, Junbeom Park, Yong Ho Lee, Jongwoo Son

引用次数: 0