CrystEngComm最新文献

{"title":"Chemically grafting Ni(ii)–dithiocarbamate complex onto graphene oxide nanosheets for selective and ultrafast removal of toxic anionic methyl orange dye from water†","authors":"Masoumeh Javanmard, Saeed Farhadi, Abdelnasser Mohammadi-Gholami and Farzaneh Mahmoudi","doi":"10.1039/D4CE01229A","DOIUrl":"https://doi.org/10.1039/D4CE01229A","url":null,"abstract":"<p >In this study, a Ni(<small>II</small>)–dithiocarbamate complex was chemically anchored onto amino-functionalized graphene oxide (GO) nanosheets using 3-aminopropyltriethoxysilane as an organic linker. The grafting process involved a chemical reaction between aminopropyl-functionalized GO nanosheets and carbon disulfide (CS<small>₂</small>). The resultant Ni(DTC)<small>₂</small>-GO hybrid material was comprehensively characterized using various analytical techniques, including Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), zeta potential analysis, and surface area measurement. The hybrid's adsorption performance was evaluated using different dye solutions, with a focus on its ability to efficiently remove anionic dyes from water. Notably, the material demonstrated exceptional capability in adsorbing the anionic methyl orange (MO) dye, achieving 99% removal within just six minutes and boasting an adsorption capacity of 159.13 mg g<small>⁻¹</small>. These results highlight its potential as a high-performance adsorbent for water purification and environmental remediation. The study also examined the effects of initial dye concentration, adsorbent dosage, and solution pH on the adsorption process. Kinetic analysis revealed that the adsorption followed a pseudo-second-order (PSO) model, while the Freundlich isotherm provided the best fit for the adsorption behavior of MO on the hybrid. Furthermore, the hybrid material exhibited rapid and selective adsorption of anionic MO dye from a binary dye mixture comprising cationic methylene blue (MB) and MO. The hybrid was easily recoverable by filtration and retained both structural stability and adsorption efficiency over at least four reuse cycles. These findings underscore its potential as an innovative material for water treatment applications and for recovering valuable organic compounds from wastewater.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 11","pages":" 1632-1649"},"PeriodicalIF":2.6,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two novel tetranuclear Yb(iii)-based compounds for highly efficient conversion of CO2 to cyclic carbonates†","authors":"Yining Sun, Guoguo Liu, Gang Xiong and Guangwen Xu","doi":"10.1039/D4CE00662C","DOIUrl":"https://doi.org/10.1039/D4CE00662C","url":null,"abstract":"<p >Two new tetranuclear Ln(<small>III</small>)-based compounds were formulated, namely, [Yb<small>₄</small>(μ<small>₃</small>-O)<small>₂</small>(dbm)<small>₄</small>(L1)<small>₆</small>]·2CH<small>₂</small>Cl<small>₂</small>·6CH<small>₃</small>CN (<strong>1</strong>) and [Yb<small>₄</small>(μ<small>₃</small>-O)<small>₂</small>(dbm)<small>₄</small>(L2)<small>₆</small>] (<strong>2</strong>) (Hdbm = dibenzoylmethane, HL1 = (<em>E</em>)-5-((4-methoxybenzylidene)amino)quinolin-8-ol, and HL2 = (<em>E</em>)-5-(benzylideneamino)quinolin-8-ol), using two 8-hydroxyquinoline Schiff bases (HL1 and HL2) under solvothermal conditions. The single-crystal structures and catalytic properties of the two Yb<small>₄</small> compounds (<strong>1</strong> and <strong>2</strong>) were comprehensively studied. Single-crystal X-ray diffraction analysis showed that both Yb<small>₄</small> compounds (<strong>1</strong> and <strong>2</strong>) possessed a rhombic Yb<small>₄</small> core and showed butterfly-shaped structures. Both tetranuclear Yb(<small>III</small>)-based compounds displayed typical near-infrared luminescence of Yb<small>³⁺</small> ions at room temperature. Catalytic study indicates that the two Yb<small>₄</small> compounds are heterogeneous catalysts that can catalyze the cycloaddition of CO<small>₂</small> with epoxides and offer high yield under mild conditions (TBAB as the co-catalyst, <em>T</em> = 70 °C, <em>P</em> = 0.1 MPa and solvent-free).</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 14","pages":" 2148-2153"},"PeriodicalIF":2.6,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The large electrical-resistance enhancement of piezoelectric single crystals Sr3Ga2Ge4O14 by compensating for vacancy defects with the doping of high-valence Sm3+ ions","authors":"Zhongjun Tian, Linwen Jiang, Zhigang Sun, Chen Yang, Qiang Zhou, Liping Shang and Yanqing Zheng","doi":"10.1039/D4CE01180E","DOIUrl":"https://doi.org/10.1039/D4CE01180E","url":null,"abstract":"<p >Sr<small>₃</small>Ga<small>₂</small>Ge<small>₄</small>O<small>₁₄</small> (SGG) crystals are widely used in the high-temperature piezoelectric field because of their excellent piezoelectric properties. In this paper, the Sr<small>²⁺</small> lattice of the SGG crystal is replaced with high-valence Sm<small>³⁺</small> with a close radius to improve its high-temperature resistivity and to obtain more stable electroelastic properties. The full width at half maximum (FWHM) of the X-ray rocking curves of (Sm<small>_0.01</small>Sr<small>_2.99</small>)<small>₃</small>Ga<small>₂</small>Ge<small>₄</small>O<small>₁₄</small> (SSGG) and SGG crystals is 29.62′′ and 32.04′′, respectively. In the range of 50 °C to 700 °C, the dielectric constant <em>ε</em><small>^T</small><small>₁₁</small>/<em>ε</em><small>^T</small><small>₀</small> of the SSGG crystal increases from 16.51 to 18.49, and the piezoelectric coefficient <em>d</em><small>₁₁</small> also increases from 7.32 pC N<small>⁻¹</small> to 7.97 pC N<small>⁻¹</small>. At 700 °C, the resistivity of the X-cut plates of SSGG and SGG crystals is about 1.52 × 10<small>⁷</small> Ω cm and 4.6 × 10<small>⁶</small> Ω cm, respectively. The SSGG crystal contains larger forbidden bandwidths and fewer oxygen vacancies, as measured by UV-vis DRS and X-ray photoelectron spectroscopy analyses, and the reduction of oxygen vacancies can effectively shorten the carrier lifetime, which is a key factor in increasing the resistivity.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 10","pages":" 1474-1482"},"PeriodicalIF":2.6,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fine-tuning of gas uptake and selectivity in a hexafluorozirconate pillared coordination network that features two porous phases†","authors":"Nathan C. Harvey-Reid, Hayley S. Scott, Komal M. Patil, Naveen Kumar, Colm Healy, Michael J. Zaworotko, Soumya Mukherjee and Paul E. Kruger","doi":"10.1039/D4CE01250J","DOIUrl":"https://doi.org/10.1039/D4CE01250J","url":null,"abstract":"<p >Hybrid coordination networks, sustained by divalent transition metal ions and a combination of organic and inorganic linker ligands, are an emerging class of physisorbents for adsorptive gas and vapour capture, especially under trace (≤1%) concentrations. Herein, we report a Cu(<small>II</small>) hybrid coordination network using the anionic pillar hexafluorozirconate ZrF<small>₆</small><small>²⁻</small>, [Cu(pypz)<small>₂</small>ZrF<small>₆</small>]<small>_<em>n</em></small>; ZRFSIX-21-Cu (21 = 4-(3,5-dimethyl-1<em>H</em>-pyrazol-4-yl)pyridine). ZRFSIX-21-Cu possesses two ultramicroporous phases, a two-dimensional square lattice phase (α), and a three-dimensional primitive cubic unit phase (β), a rarity among hybrid ultramicroporous materials. Interestingly, <strong>ZRFSIX-21-Cu-α</strong> revealed better selectivity for C<small>₂</small>H<small>₂</small> over CO<small>₂</small>, and <strong>ZRFSIX-21-Cu-β</strong> for C<small>₂</small>H<small>₂</small> over C<small>₂</small>H<small>₄</small>.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 12","pages":" 1736-1741"},"PeriodicalIF":2.6,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ce/d4ce01250j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metallo-hydrogen bonded organic frameworks with nitrogen tridentate ligands: exploring inclusion and dye adsorption properties†","authors":"Haitao Li, Guangshan Qin, Zhenwei Guo and Fang Guo","doi":"10.1039/D4CE01215A","DOIUrl":"https://doi.org/10.1039/D4CE01215A","url":null,"abstract":"<p >In this research, we've synthesized a remarkable series of charge-assisted hydrogen-bonded host frameworks. These frameworks are like intricate molecular “houses” built using a unique bowl-shaped nitrogen tridentate ligand <strong>L</strong> (2,4,6-trimethyl-1,3,5-tris(morpholinomethyl)benzene) and metal ions (M = Cu, Zn, Cd). Through the second sphere coordination approach, we've created networks with varying void sizes or tightly packed structures. The water molecules nestled within these voids play a crucial role as hydrogen bonding bridges, and they can be released while the voids remain stable even at the melting point. Once the guest water molecules are removed, these frameworks become selective “sieves” for different liquid solvents, depending on their molecular size. What's more, they show impressive dye adsorption capabilities, with 31.5 mg g<small>⁻¹</small> for SY (78.8%), 32.6 mg g<small>⁻¹</small> for MB (81.5%), and 36.4 mg g<small>⁻¹</small> for CR (91.0%) in methanol solutions within just 24 hours. This research could pave the way for new applications in areas like environmental remediation and chemical separation.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 12","pages":" 1773-1780"},"PeriodicalIF":2.6,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Twisted cholesterol crystals by Mueller matrix microscopy†","authors":"Yue Tian, Mengyuan Hao, Yong Tang, Chen Li, Demei Kong, Junru Zhu, Weikang Wang, Xiaoyan Cui and Ting Wang","doi":"10.1039/D4CE01252F","DOIUrl":"https://doi.org/10.1039/D4CE01252F","url":null,"abstract":"<p >Cholesterol crystals (CCs) are major contributors to atherosclerosis and gallstone development. Understanding the emergence, polymorphic variations, morphological intricacies, and molecular interactions of CCs are pivotal for unraveling associated maladies. We succeeded in growing CCs as spherulites in three polymorphs; two are banded spherulites composed of righthanded-twisted CCs. Moreover, all the CC spherulites can be stained by lipophilic dyes, such as Nile red and coumarin. The microstructures of twisted CCs in stained spherulites are explored in detail using the Mueller matrix microscope. Insights gleaned from the polymorphic diversity and microstructural characteristics of CCs offer valuable cues for elucidating their pathological cascades.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 12","pages":" 1687-1693"},"PeriodicalIF":2.6,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, structure, and stability of a novel 2H-azirine under pressure†","authors":"Alexa Cabrera, Fatemah Safari, Ravhi Kumar, Haoran Zhu, Muhtar Ahart, Zhenxian Liu, Tom G. Driver and Russell J. Hemley","doi":"10.1039/D4CE00937A","DOIUrl":"https://doi.org/10.1039/D4CE00937A","url":null,"abstract":"<p >We have synthesized 2,3-diphenyl-2<em>H</em>-azirine, a strained unsaturated heterocyclic compound, and examined its high-pressure behavior to above 10 GPa using diamond anvil cell techniques. Single crystal X-ray diffraction at ambient conditions reveals that the crystal structure is hexagonal and consists of interesting helices surrounding voids in the structure. A continuous shift of the Raman and infrared vibrational spectra with increasing pressure is observed, indicating that the molecular structure is preserved to at least 8 GPa at room temperature. High-pressure synchrotron powder X-ray diffraction shows that the hexagonal structure persists, with a smooth compression of the <em>a</em> and <em>c</em> parameters to 10 GPa. The structural stability under pressure is attributed to the reduction in void size within the helical framework despite the inherent strain and reactivity of the molecule. The channels in the structure could encapsulate small molecules for gas or energy storage applications.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 9","pages":" 1248-1255"},"PeriodicalIF":2.6,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ce/d4ce00937a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-covalent interactions in solid p-C6F4Cl2 and C6F5Cl†","authors":"Joseph C. Bear, Alexander Rosu-Finsen and Jeremy K. Cockcroft","doi":"10.1039/D4CE01192A","DOIUrl":"10.1039/D4CE01192A","url":null,"abstract":"<p >This study investigates the crystal structure and phase behaviour of two organofluorine aromatic compounds, <em>para</em>-dichlorotetrafluorobenzene (<em>p</em>-C<small>₆</small>F<small>₄</small>Cl<small>₂</small>) and chloropentafluorobenzene (C<small>₆</small>F<small>₅</small>Cl), with a focus on solid-state phase transitions and non-covalent interactions. The thermal and structural properties of these compounds were investigated using a combination of differential scanning calorimetry (DSC), variable-temperature powder X-ray diffraction (VT-PXRD), and single-crystal X-ray diffraction (SXD). While <em>p</em>-C<small>₆</small>F<small>₄</small>Cl<small>₂</small> showed no solid-state phase transitions, C<small>₆</small>F<small>₅</small>Cl exhibited three solid-state phases, including a reversible solid–solid transition at low temperature and an elusive transition just below the melt. The phase II–III transition in C<small>₆</small>F<small>₅</small>Cl is due to a change from twofold disorder to an antiferroelectric arrangement of the molecular dipole moment. Phase II of C<small>₆</small>F<small>₅</small>Cl is isomorphous to the structure of <em>p</em>-C<small>₆</small>F<small>₄</small>Cl<small>₂</small>. A comparison of the different solid-state structures of mono- and <em>para</em>-di-halide-substituted hexafluorobenzenes is given.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 10","pages":" 1386-1391"},"PeriodicalIF":2.6,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11816605/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Separation of isomers of chiral thiourea derivatives via spontaneous resolution and rationale of molecular recognition†‡","authors":"Astha M. Dwivedi, Rajesh G. Gonnade, Suban K. Sahoo and Ashutosh V. Bedekar","doi":"10.1039/D4CE01226G","DOIUrl":"https://doi.org/10.1039/D4CE01226G","url":null,"abstract":"<p >Enrichment of enantiomers during crystallization of racemic thiourea derivatives was investigated. The spontaneous resolution of a chiral thiourea derivative <em>via</em> preferential crystallization is attributed to thermodynamic stability when molecules of identical chirality bind with each other in the crystal lattice. Single crystal X-ray analysis reveals the interactions responsible for self-recognition of molecules of the same chirality in the unit cell. The tendency of the thiourea derivative to form a conglomerate is supported by IR spectroscopy, thermal analysis and computational studies.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 9","pages":" 1240-1247"},"PeriodicalIF":2.6,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A luminescent coordination polymer constructed from a fluorene-based bifunctional ligand for the selective detection of tetracyclines and 2,4,6-trinitrophenol†","authors":"Guiling Wu, Chuanzong Dong, Pinzhen Liu and Chunyang Zheng","doi":"10.1039/D5CE00044K","DOIUrl":"https://doi.org/10.1039/D5CE00044K","url":null,"abstract":"<p >Taking simple fluorene as a starting material, a new flexible bifunctional “+” shape ligand <strong>H</strong><small>_{<strong>2</strong>}</small><strong>L</strong> was synthesized in high yield through bromination, Michael addition, and Ullmann and hydrolysis reactions. Two new coordination polymers [CdL·3H<small>₂</small>O]<small>_<em>n</em></small> (<strong>CP–Cd</strong>) and [PbL·H<small>₂</small>O]<small>_<em>n</em></small> (<strong>CP–Pb</strong>) were synthesized with combined advantages of two functional groups (carboxyl and imidazolyl groups) under solvothermal conditions. Crystal structure analysis shows that <strong>CP–Cd</strong> and <strong>CP–Pb</strong> are isomorphous and have a two-dimensional (2D) framework with a single-node SP 2-periodic net (6,3)Ia topology. Moreover, <strong>CP–Cd</strong> could selectively detect two antibiotics (TC: tetracycline; CTC: chlortetracycline) in an aqueous solution with high selectivity and sensitivity through a turn-off effect, and also shows high efficiency in fluorescence quenching toward 2,4,6-trinitrophenol (TNP) detection. The detection limits are 0.103 μM (TC), 0.098 μM (CTC) and 0.147 μM (TNP), respectively. Also, the rational mechanism of fluorescence sensing was also discussed in detail by experiments and theoretical calculation, which revealed that competitive absorption (CA), fluorescence resonance energy transfer (FRET) and photoinduced electron transfer (PET) largely contribute to the sensing of TNP and the two antibiotics.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 11","pages":" 1560-1567"},"PeriodicalIF":2.6,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}