Bulletin of the Korean Chemical Society最新文献_第2页

Correction to “Frontier femtosecond midinfrared pump-probe and 2DIR techniques: Advances in experimental methodologies” 对“前沿飞秒中红外泵浦探测和2DIR技术：实验方法的进展”的修正

IF 2.2 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2026-10-20 Epub Date: 2026-09-22 DOI: 10.1002/bkcs.70217

{"title":"Correction to “Frontier femtosecond midinfrared pump-probe and 2DIR techniques: Advances in experimental methodologies”","authors":"","doi":"10.1002/bkcs.70217","DOIUrl":"https://doi.org/10.1002/bkcs.70217","url":null,"abstract":"\u0000 J. Shim, K. Park, M. Lee, M. Cho, J. Kim, K. Kwak. Bull. Korean Chem. Soc. 2025, 46, 458–467. https://doi.org/10.1002/bkcs.70020\u0000 In the originally published version of this article, Hyunmin Jang and Tai Hyun Yoon were inadvertently omitted from the author list, and Minhaeng Cho's name was incorrectly listed as “Minharng Cho.” The correct author list should read as follows:Joongwon Shim1,2 | Kwanghee Park1 | Minhyuk Lee3 | Hyunmin Jang1,2 | Tai Hyun Yoon1,4 | Minhaeng Cho1,2 | JunWoo Kim3 | Kyungwon Kwak1,2The affiliations are:1Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul, Republic of Korea2Department of Chemistry, Korea University, Seoul, Republic of Korea3Department of Chemistry, Chungbuk National University, Cheongju, Republic of Korea4Department of Physics, Korea University, Seoul, Republic of KoreaAll authors have agreed to this correction. This correction does not affect the scientific content or conclusions of the article.We apologize for these errors.","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"47 10","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bkcs.70217","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219555","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

Prediction of experimental excited-state absorption spectra by using vibronic transition calculations: Its practical application to a π-conjugated molecule 用振动跃迁计算预测实验激发态吸收光谱：在π共轭分子中的实际应用

IF 2.2 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2026-10-20 Epub Date: 2026-09-10 DOI: 10.1002/bkcs.70213

Joonyoung F. Joung, Sungnam Park

{"title":"Prediction of experimental excited-state absorption spectra by using vibronic transition calculations: Its practical application to a π-conjugated molecule","authors":"Joonyoung F. Joung, Sungnam Park","doi":"10.1002/bkcs.70213","DOIUrl":"https://doi.org/10.1002/bkcs.70213","url":null,"abstract":"Accurate theoretical prediction of excited-state absorption (ESA) spectra remains challenging. Although considerable progress has been made in computational methods for ESA spectroscopy, their practical application to the interpretation of transient absorption and photoinduced absorption spectra is still limited. In this study, we present a practical approach for calculating molecular ESA spectra by combining vibronic transition calculations with routine density functional theory (DFT) and time-dependent DFT (TDDFT) calculations available in standard quantum chemistry packages. Using azulene as a model system, we demonstrate that the proposed method successfully reproduces the vibronic features and band positions observed in the experimental ESA spectrum. This approach therefore provides a practical framework for assigning ESA bands arising from transitions between low-lying excited states of molecules. The method delivers the vibronic band shapes and peak positions that are needed to assign ESA bands directly from these standard calculations, without requiring the excited-state-to-excited-state transition moments that determine absolute intensities.","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"47 10","pages":"1248-1256"},"PeriodicalIF":2.2,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bkcs.70213","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219533","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

Rational design of platinum-cobalt alloy nanocrystals through morphology, composition, and surface engineering 从形貌、成分和表面工程等方面合理设计铂钴合金纳米晶

IF 2.2 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2026-09-21 Epub Date: 2026-08-06 DOI: 10.1002/bkcs.70202

Daeun Kim, Selim Park, Saehyun Park, Joyjit Kundu, Sang-Il Choi

引用次数: 0

Identification of active compounds from Dregea volubilis that improve insulin secretion by regulating pancreatic β-cell metabolism 通过调节胰腺β细胞代谢改善胰岛素分泌的茯苓活性物质的鉴定

IF 2.2 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2026-09-21 Epub Date: 2026-08-07 DOI: 10.1002/bkcs.70200

Dahae Lee, Nguyen Xuan Nhiem, Ji Hye Hwang, Ki Sung Kang

{"title":"Identification of active compounds from Dregea volubilis that improve insulin secretion by regulating pancreatic β-cell metabolism","authors":"Dahae Lee, Nguyen Xuan Nhiem, Ji Hye Hwang, Ki Sung Kang","doi":"10.1002/bkcs.70200","DOIUrl":"https://doi.org/10.1002/bkcs.70200","url":null,"abstract":"Type 2 diabetes (T2D) occurs due to a lack of insulin secretion by glucose stimulation, so high blood glucose levels predominate that associated with metabolic dysregulation. The exploration of bioactive compounds from natural sources has attracted considerable attention because these molecules provide chemically diverse scaffolds with broad pharmacological potential and have historically contributed to the successful development of numerous clinically approved drugs. In this study, we examined the effect of compounds isolated from Dregea volubilis (L.f.) Benth. ex Hook. f. (Apocynaceae) on glucose-stimulated insulin secretion (GSIS) from the pancreatic β-cells. 17β-Marsdenin (1), drevoluoside N (2), and dreageoside A11 (3) were screened for their ability to increase GSIS using a rat insulin ELISA kit. Western blotting was used to investigate the levels of pancreatic and duodenal homeobox-1 (PDX-1), phosphorylation of insulin receptor substrate-2 (P-IRS-2), phosphorylation of phosphatidylinositol 3-kinase (P-PI3K), and phosphorylation of Akt (P-Akt), which are related to β-cell function and insulin secretion in INS-1 cells. Compounds 1–3 stimulated insulin secretion in INS-1 cells without inducing cytotoxicity. A further experiment showed that compound 3 enhanced the expressions of PDX-1, P-IRS-2, P-PI3K, and P-Akt in INS-1 cells. The data suggest that compounds 1–3 from D. volubilis have the potential to improve insulin secretion in β-cells, representing the first step toward the development of potent antidiabetic drugs.","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"47 9","pages":"1152-1156"},"PeriodicalIF":2.2,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149007458","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

DNA mechanics at the nanoscale: A computational perspective 纳米尺度下的DNA力学：计算视角

IF 2.2 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2026-09-21 Epub Date: 2026-08-02 DOI: 10.1002/bkcs.70201

Yeonho Song, Jun Soo Kim

{"title":"DNA mechanics at the nanoscale: A computational perspective","authors":"Yeonho Song, Jun Soo Kim","doi":"10.1002/bkcs.70201","DOIUrl":"https://doi.org/10.1002/bkcs.70201","url":null,"abstract":"Double-stranded DNA molecules are sharply bent into arcs with radii on the order of 10 nanometers in the formation of nucleosomes in biology and when they are looped into minicircles for nanoscale applications. In this Personal Account, we describe our computational efforts over the past several years to understand the structure and dynamics of sharply bent DNA using molecular dynamics simulations. First, using coarse-grained models of DNA and cationic nanoparticles, we discuss how a small difference in sequence-dependent DNA flexibility, on the order of 10 nm in persistence length, substantially influences the structure and thermodynamics of DNA–nanoparticle complex formation. Potential of mean force calculations quantify the thermodynamic preference for nanoparticle binding to more flexible DNA, with the free energy difference arising primarily from the sequence-dependent elastic energy of DNA bending. We then turn to all-atom simulations of DNA minicircles with approximately 90 base pairs. Sequence-dependent coupling between DNA bending and its helical twist is identified for specific dinucleotide steps, and the internal dynamics of poloidal rotation and in-plane circular vibration are characterized on time scales of tens and several nanoseconds, respectively. Finally, we present our recent investigations of mechanically interlocked DNA nanostructures: rotaxanes, in which a DNA minicircle is threaded onto a linear DNA axle, and catenanes, composed of two mutually interlocked DNA minicircles. The effects of torsional stress-induced shape distortion on the structure and dynamics of these topologically constrained architectures are discussed. Together, these studies illustrate how the interplay of DNA sequence, flexibility, and topology governs the behavior of sharply bent DNA, providing molecular-level insights for the design of DNA-based nanoscale devices.","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"47 9","pages":"1132-1140"},"PeriodicalIF":2.2,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149007423","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

A brief historical overview of organometallic chemistry in organic synthesis: From the 19th to the 20th century 有机合成中的有机金属化学简史综述：从19世纪到20世纪

IF 2.2 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2026-09-21 Epub Date: 2026-08-12 DOI: 10.1002/bkcs.70204

Woohyun Jo

{"title":"A brief historical overview of organometallic chemistry in organic synthesis: From the 19th to the 20th century","authors":"Woohyun Jo","doi":"10.1002/bkcs.70204","DOIUrl":"https://doi.org/10.1002/bkcs.70204","url":null,"abstract":"Organometallic reagents and catalysts have now assumed an integral role in contemporary organic synthesis. However, the intellectual progression from early stoichiometric reagents to advanced catalytic systems is rarely presented in a manner accessible to newcomers in the field. While standard textbooks and specialized reviews offer comprehensive descriptions of organometallic bonding and individual transformations, they often either assume significant prior knowledge or examine each development in isolation, without elucidating the mechanistic connections that span over a century of advancements. This review aims to provide a brief historical overview of this progression, beginning with the discovery of Zeise's salt and the development of organometallic reagents of the 19th century and extending through the rise of homogeneous catalysis, asymmetric hydrogenation, cross-coupling, and olefin metathesis, and ending with the emergence of C–H bond activation in the 20th century. Throughout, the focus remains on the underlying mechanistic principles that propelled each breakthrough and the new synthetic opportunities they facilitated.","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"47 9","pages":"1115-1131"},"PeriodicalIF":2.2,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149007540","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

Cover Picture: Rational Design of Platinum-Cobalt Alloy Nanocrystals through Morphology, Composition, and Surface Engineering (BKCS 9/2026) by Daeun Kim, Selim Park, Saehyun Park, Joyjit Kundu, and Sang-Il Choi 封面图片：通过形貌、成分和表面工程合理设计铂钴合金纳米晶体（BKCS 9/2026），作者Daeun Kim、Selim Park、Saehyun Park、Joyjit Kundu和Sang-Il Choi

IF 2.2 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2026-09-21 DOI: 10.1002/bkcs.70153

引用次数: 0

Voltage-programmed capillary gel electrophoresis enables rapid detection of bovine coronavirus DNA 电压程序毛细管凝胶电泳能够快速检测牛冠状病毒DNA

IF 2.2 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2026-09-21 Epub Date: 2026-08-18 DOI: 10.1002/bkcs.70205

Hyunjin Jung, Jihyun Yun, Jinho Park, Seong Ho Kang

{"title":"Voltage-programmed capillary gel electrophoresis enables rapid detection of bovine coronavirus DNA","authors":"Hyunjin Jung, Jihyun Yun, Jinho Park, Seong Ho Kang","doi":"10.1002/bkcs.70205","DOIUrl":"https://doi.org/10.1002/bkcs.70205","url":null,"abstract":"Bovine coronavirus (BCoV) is a major pathogen that causes enteric and respiratory disease in cattle and considerable economic losses in the livestock industry. In this study, we present a voltage-programmed capillary gel electrophoretic separation with laser-induced fluorescence for the rapid detection of BCoV DNA. Electrophoretic separation was dynamically controlled through a programmed electric field (20 kV for 0–14 min, 10 kV for 14–16.2 min, 6 kV for 16.2–25 min, and 20 kV thereafter), enabling analysis of a 941-bp polymerase chain reaction amplicon within 18 min with baseline separation (resolution, Rs = 1.91). This analysis time is approximately 20-fold shorter than that required for conventional slab gel electrophoresis. Notably, this voltage-programming (VP) strategy requires no modification of existing instrumentation or separation media, providing a practical and scalable approach for enhancing analytical throughput. This VP-based separation method offers a rapid, efficient platform for viral diagnostics and high-throughput nucleic acid analysis, with potential applications in veterinary and biomedical research.","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"47 9","pages":"1157-1161"},"PeriodicalIF":2.2,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bkcs.70205","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149007396","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

Nitric oxide generation from nitrate at the cobalt center 由钴中心的硝酸盐生成一氧化氮

IF 2.2 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2026-09-21 Epub Date: 2026-08-18 DOI: 10.1002/bkcs.70209

Jeewon Chun, Yunho Lee

{"title":"Nitric oxide generation from nitrate at the cobalt center","authors":"Jeewon Chun, Yunho Lee","doi":"10.1002/bkcs.70209","DOIUrl":"https://doi.org/10.1002/bkcs.70209","url":null,"abstract":"Herein, we report the synthesis and reactivity of the cobalt(II) nitrate complex, (acriPNP)Co(NO3) (2). Exposure of 2 to both CO(g) or PPh3 drives a deoxygenation pathway to afford the mononitrosyl nitrite cobalt species (4). To elucidate the electronic features of this transformation, the 4-coordinate cationic cobalt nitrosyl species (5) was independently prepared. Although both 4 and 5 possess an identical {CoNO}8 core, both species exhibit remarkably distinct NO characters: square-planar 5 displays a linear NO+ character (νNO = 1826 cm−1), whereas square-pyramidal 4 shows a bent, apical NO binding with a nitrosyl vibration at 1655 cm−1. Furthermore, chemical reduction of 5 induces an intricate {CoNO}9 generation and NO disproportionation cascade that ultimately converges to form 4. These findings demonstrate that the (acriPNP)Co scaffold offers electronic flexibility for governing coordination environment and redox pathways in NOx interconversion.","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"47 9","pages":"1058-1062"},"PeriodicalIF":2.2,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bkcs.70209","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149007399","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

Revisiting thermodynamic scaling relations: A reduced-cost dual-descriptor framework for the universal design of carbon-based electrocatalysts 重新审视热力学结垢关系：碳基电催化剂通用设计的低成本双描述子框架

IF 2.2 4区化学

Bulletin of the Korean Chemical Society Pub Date : 2026-09-21 Epub Date: 2026-08-13 DOI: 10.1002/bkcs.70208

Xiaopei Hu, Xinru Wei, Shanghai Yu, Yingying Wang, Jin Yong Lee, Baotao Kang

引用次数: 0