Bulletin of the Korean Chemical Society最新文献

{"title":"Tuning mechanoluminescence colors from aromatic imides with dyes","authors":"Seunghui Lee,&nbsp;Jeonghoon Jang,&nbsp;Gyeonghun Kim,&nbsp;Jiwon Bang,&nbsp;Gregory I. Peterson","doi":"10.1002/bkcs.12944","DOIUrl":"https://doi.org/10.1002/bkcs.12944","url":null,"abstract":"<p>Aromatic imides are an important class of organic mechanoluminescence (ML) compounds. Color is one of the most important ML properties, and it was previously modified by preparing various aromatic imide derivatives using chemical synthesis. In this report, we present a simple alternative strategy where a single aromatic imide is solution-mixed and crystallized with commercial organic dyes to produce mixtures that exhibit new ML colors. Specifically, using an aromatic imide with blue ML in its pure form, the ML could be changed to pink, yellow, or a weak white color using Eosin Y, Fluorescein, or Acridine Orange, respectively. The resulting mixtures could also be incorporated into waste polystyrene plastic to make composite materials with ML behavior.</p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 3","pages":"310-316"},"PeriodicalIF":1.7,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639237","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}

{"title":"Enhancement of the photoelectrochemical performance of bismuth vanadate (BiVO4) photoanode by building a W:BiVO4/Mo:BiVO4 Homojunction","authors":"Ji Hyun Kim,&nbsp;Seung Hyeon Jeong,&nbsp;Aram Hong,&nbsp;Zhenhua Pan,&nbsp;Kenji Katayama,&nbsp;Woon Yong Sohn","doi":"10.1002/bkcs.12943","DOIUrl":"https://doi.org/10.1002/bkcs.12943","url":null,"abstract":"<p>We fabricated a highly efficient bismuth vanadate (BiVO₄)-based photoanode by constructing a W:BiVO₄/Mo:BiVO₄ homojunction configuration. It was confirmed that, in the case of Type-II junction, the photocurrent density was drastically enhanced and the onset potential was cathodically shifted. The origins of the enhanced photo-electrochemical performance could be attributed to the improvement of the charge separation efficiency, which resulted from both the built-in electric field and Fermi level unpinning, achieved by the homojunction and Mo doping, respectively.</p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 3","pages":"301-309"},"PeriodicalIF":1.7,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639238","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}

{"title":"Metal ion (Mn+)-condensed DNA nanoparticles: Synthesis, properties, and applications","authors":"Jeesu Moon,&nbsp;Sang-Won Kim,&nbsp;Jae-Seung Lee","doi":"10.1002/bkcs.12942","DOIUrl":"https://doi.org/10.1002/bkcs.12942","url":null,"abstract":"<p>Metal ion (Mⁿ⁺)-induced DNA condensation is a critical process observed in both natural and synthetic contexts, playing a central role in the formation of nanoscale DNA-based materials. This phenomenon leverages the ability of multivalent Mⁿ⁺s to neutralize the negatively charged DNA phosphate backbone, promote electrostatic cross-linking, and enable coordination bonding, leading to compact and organized DNA nanostructures. Recent advancements have focused on synthesizing Mⁿ⁺-condensed DNA nanoparticles (Mⁿ⁺-CDNPs) through controlled molecular assembly, utilizing the interplay of DNA sequence specificity, Mⁿ⁺ type, and environmental conditions. The choice of Mⁿ⁺ significantly influences the properties of Mⁿ⁺-CDNPs, imparting functionalities including fluorescence, magnetism, and catalytic activity, which are tailored for applications in biosensing, diagnostics, and therapeutic delivery. However, several challenges remain in fully realizing the potential of Mⁿ⁺-CDNPs. These include scalability issues, morphological control beyond isotropic spherical nanoparticles, and ensuring biocompatibility, particularly when using heavy Mⁿ⁺s. Innovations in synthesis strategies, such as optimizing phase transitions during condensation and incorporating programmable DNA sequences, have enabled enhanced structural precision and functionality. Surface modification techniques, such as coating with metal–organic frameworks (MOFs) or silica shells, have further expanded the stability and applicability of Mⁿ⁺-CDNPs. Additionally, the inclusion of functional additives, such as drugs and proteins, has broadened their use in targeted therapy and controlled release systems. This review highlights the advances in the synthesis, properties, and applications of Mⁿ⁺-CDNPs, emphasizing their potential as multifunctional platforms for biomedical and nanotechnological innovations. Future efforts must address challenges in reproducibility, toxicity, and structural diversity through interdisciplinary approaches combining experimental, computational, and engineering strategies. By overcoming these barriers, Mⁿ⁺-CDNPs hold promise for transformative advancements in nanomedicine, chemical sensing, and programmable material design.</p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 3","pages":"221-230"},"PeriodicalIF":1.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639230","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}

{"title":"Fluorescent properties and photostability of streptavidin-conjugated StayGOLD protein for DNA labeling","authors":"Yurie Tehee Kim,&nbsp;Joohee Choe,&nbsp;Kyubong Jo","doi":"10.1002/bkcs.12941","DOIUrl":"https://doi.org/10.1002/bkcs.12941","url":null,"abstract":"<p>Here, we report a strepatavidin(SA)-conjugated StayGOLD fluorescent protein as a DNA labeling agent. We investigate the photophysical properties and photostability of the streptavidin-coupled StayGOLD fluorescent protein compared to SA-mNeonGreen. Fluorescent proteins, particularly StayGOLD variants, are recognized for their enhanced stability and brightness, making them suitable for prolonged imaging. Using SA-StayGOLD in DNA labeling, we observed significant improvements in fluorescence intensity and reduced photobleaching relative to SA-mNeonGreen. Photophysical analyses suggest that StayGOLD's stability arises from specific structural features, including interactions of protein residues and water molecules with the chromophore. Structural comparisons revealed differing chromophore environments between SA-StayGOLD and SA-mNeonGreen, with arginine (R86) in StayGOLD appearing as a particularly relevant factor for its photostability. These findings confirm SA-StayGOLD as a superior tool for single-molecule DNA imaging, where high fluorescence intensity and photostability are essential for data quality.</p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 3","pages":"293-300"},"PeriodicalIF":1.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639270","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}

{"title":"Highly blue-emissive CBZ-functionalized salen–In complexes: Influence of structural rigidity and donor substituent quantity","authors":"Yoseph Kim,&nbsp;Jaehoon Kim,&nbsp;Ji Hye Lee,&nbsp;Hyeongkwon Moon,&nbsp;Hyonseok Hwang,&nbsp;Junseong Lee,&nbsp;Houng Kang,&nbsp;Jun Hui Park,&nbsp;Youngjo Kim,&nbsp;Myung Hwan Park","doi":"10.1002/bkcs.12945","DOIUrl":"https://doi.org/10.1002/bkcs.12945","url":null,"abstract":"<p>Indium–salen complexes with electron-donating carbazole (CBZ) groups at positions 4 (<b>CBZIn1</b>) and both 4 and 6 (<b>CBZIn2</b>) were synthesized and characterized to explore the impact of the number of substituents and the structural rigidity on their photophysical properties. The single-crystal structure of <b>CBZIn2</b> revealed highly twisted arrangements between the CBZ groups and salen moieties, with torsion angles of 80°–81° at 6-position and 45°–47° at 4-position. The In center adopted a nearly square-pyramidal geometry. Both complexes displayed blue fluorescence in toluene at 298 K and in rigid environments (toluene at 77 K and in films), with emission originating from intramolecular charge transfer (ICT) transitions. The photoluminescence quantum yields (PLQYs) of <b>CBZIn1</b> and <b>CBZIn2</b> were low in solution but significantly higher in rigid states. Notably, the film-state PLQY of <b>CBZIn2</b> (78.7%) was over eight times greater than that of <b>CBZIn1</b> (9.0%). A similar trend was observed in toluene at 77 K. These results highlight the positive influence of structural rigidity and a great number of CBZ donors on ICT-based radiative decay. The experimental observations were consistent with computational predictions, further supporting the proposed mechanism.</p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 2","pages":"186-192"},"PeriodicalIF":1.7,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447066","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}

{"title":"Quantitative analysis of disaggregation properties of aggregation-induced emission luminogens (AIEgens) and off-the-shelf dyes","authors":"Kyung Tae Hong,&nbsp;Jun-Hyuk Jeon,&nbsp;Soeun Park,&nbsp;Lavanya Gopala,&nbsp;Jane Lee,&nbsp;Jun-Seok Lee","doi":"10.1002/bkcs.12933","DOIUrl":"https://doi.org/10.1002/bkcs.12933","url":null,"abstract":"<p>The aggregation state of chemosensors significantly influences their photophysical properties, making it critical for their applications in sensing and imaging. In this study, we systematically investigated the disaggregation properties of 11 representative fluorophores, including widely used dyes such as BODIPY, coumarin, fluorescein, rhodamine B, and Nile Red, as well as AIEgens like TPE and TPA. Through a quantitative approach, we determined the disaggregation concentration (DC₅₀) in various aqueous-organic co-solvent mixtures and correlated these values with solvent polarity parameters, such as dielectric constant and E_T(30). Our analysis uncovered distinct DC₅₀ patterns that act as unique fingerprints for each compound, reflecting their structural characteristics. Notably, structurally similar compounds, such as BODIPY derivatives and dansyl-based chemosensors, exhibited comparable trends. This study underscores the utility of solvent polarity versus DC₅₀ scatter plots for evaluating aggregation-dependent chemosensors and offers valuable insights into the molecular determinants of self-aggregation, enabling more rational chemosensor design.</p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 2","pages":"116-121"},"PeriodicalIF":1.7,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bkcs.12933","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446714","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}

{"title":"Lewis base phase transfer catalyst promoted solvent-free nucleophilic reactions in ionic liquids: Quantum chemical analysis for cooperative enhancement in SN2 reaction rates","authors":"Young-Ho Oh,&nbsp;Sungyul Lee","doi":"10.1002/bkcs.12940","DOIUrl":"https://doi.org/10.1002/bkcs.12940","url":null,"abstract":"<p>We present quantum chemical analysis of Lewis base phase transfer catalyst (PTC) facilitated solvent-free nucleophilic reactions in green solvent/catalyst ionic liquids (ILs). We adopt two nucleophilic processes: First, we examine whether and how the reaction rate of 18-crown-6-promoted S_N2 reaction is further enhanced by the IL [Bmim]OMs. Second, we examine the promotion of S_N2 cynation by the IL-integrated aza-crown ether, and third, the S_N2 fluorination facilitated by [2.2.2]-cryptand in the IL. Interactions between the IL, PTC and the substrates are shown to give rise to lower Gibbs free energies of activation, with the IL anion (OMs⁻) acting as an additional Lewis base promoter on the counter-cation M⁺, (M = K, Cs), thereby further mitigating the latter's disadvantageous influence on the nucleophile. We thus propose that the ILs may be used to facilitate the nucleophilic processes as solvent/ organocatalysts instead of environmentally malicious organometallic compounds.</p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 2","pages":"178-185"},"PeriodicalIF":1.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446695","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}

{"title":"Manipulating photophysical properties through asymmetric modification of triptycene-fused multi-resonance TADF emitter","authors":"Hanif Mubarok,&nbsp;Rafi Muhammad Lutfi,&nbsp;Jaemin Yun,&nbsp;Jaehoon Jung,&nbsp;Min Hyung Lee","doi":"10.1002/bkcs.12939","DOIUrl":"https://doi.org/10.1002/bkcs.12939","url":null,"abstract":"<p>Developing multi-resonance (MR) effect-induced thermally activated delayed fluorescence (TADF) emitters that exhibit excellent photophysical properties and a sterically shielded structure is crucial for achieving high-efficiency and stable organic light-emitting diodes (OLEDs). Herein, we propose a new synthetic approach to asymmetric bulky MR-TADF emitters based on a B,N core. Three asymmetric Tp-fused MR emitters (<b>1</b>–<b>3</b>) are produced by attaching a bulky and rigid triptycene (Tp) moiety on one side of the MR core and introducing different <i>N</i>-containing functional groups on the other side. All emitters exhibit high photoluminescence quantum yield, narrow full width at half maximum, and TADF properties with reasonable reverse intersystem crossing rates (~10⁴ s⁻¹) in a rigid matrix. Notably, the emission color of the emitters ranges from deep blue to sky blue, depending on the <i>N</i>-containing functional groups. Electrochemical and theoretical studies further demonstrate that the frontier molecular orbitals are distributed over the MR core formed by the two moieties, and the resulting energy levels vary accordingly. The findings of this study will be useful for the design of various color-tunable yet sterically shielded MR-TADF emitters.</p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 2","pages":"171-177"},"PeriodicalIF":1.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446696","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}

{"title":"Cover Picture: Strategies to increase catalytic efficiency of manganese-catalysed aerobic oxidation of 5-hydroxymethylfurfural (BKCS 1/2025) Hyejin Yu, Yeonkyeong Ryu, Younghoon Kim, Hyun Sung Kim, Hyun Gil Cha","authors":"","doi":"10.1002/bkcs.12856","DOIUrl":"https://doi.org/10.1002/bkcs.12856","url":null,"abstract":"<p>The cover image illustrates the catalytic potential of manganese oxides with varying oxidation states, highlighting Mn2O3 as the most efficient catalyst for aerobic HMF oxidation. Key factors contributing to this performance, including the oxidation state of metal moieties, oxygen mobility, and surface basicity, are visually represented to emphasize the synergetic effects driving the enhanced catalytic activity. More details are available in the article by Hyejin Yu, Yeonkyeong Ryu, Younghoon Kim, Hyun Sung Kim, Hyun Gil Cha\u0000 \u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 1","pages":"1"},"PeriodicalIF":1.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bkcs.12856","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115449","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}

{"title":"Crystal structure and photoluminescence properties of CuBrxI1−x(melamine) (0 ≤ x ≤ 1) complexes","authors":"Juhyun Kim,&nbsp;Donghyeon Kim,&nbsp;Fouzia Khefif,&nbsp;Woojin Yoon,&nbsp;Hoseop Yun,&nbsp;Chung-Yul Yoo,&nbsp;Seung-Joo Kim","doi":"10.1002/bkcs.12938","DOIUrl":"https://doi.org/10.1002/bkcs.12938","url":null,"abstract":"<p>Organic–inorganic copper(I) halide complexes have attracted attention due to their optoelectronic properties and non-toxic nature. In this study, we systematically synthesized copper(I) halide melamine complexes as single crystals, (CuBr(melamine) and CuI(melamine)) and polycrystalline powders, CuBr_<i>x</i>I_1-<i>x</i>(melamine) (0 ≤ <i>x</i> ≤ 1). The crystal structures of CuBr(melamine) and CuI(melamine) are isotypic with a triclinic space group <i>P</i> <span></span><math>\u0000 <mrow>\u0000 <mover>\u0000 <mn>1</mn>\u0000 <mo>¯</mo>\u0000 </mover>\u0000 </mrow></math>, where copper(I) is connected with three adjacent halides along the <i>a</i>-axis and a single melamine ligand along the <i>c</i>-axis, forming an infinite stair-chain structure. The photoluminescence emission peaks of CuBr_<i>x</i>I_1-<i>x</i>(melamine) (0 ≤ <i>x</i> ≤ 1) show a red shift from 455 nm to 520 nm with the substitution of Br for I. This finding explains the structure–property relationship of organic–inorganic copper(I) halide complexes and provides guidelines for developing new organic–inorganic optoelectronic materials.</p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":"46 2","pages":"164-170"},"PeriodicalIF":1.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446751","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}