CrystEngComm最新文献

{"title":"Extremely effective separations of pyridine/picoline mixtures through supramolecular chemistry strategies employing (4R,5R)-bis(diphenylhydroxymethyl)-2-spiro-1′-cyclohexane-1,3-dioxolane as the host compound†","authors":"Daniella L. Recchia, Benita Barton and Eric C. Hosten","doi":"10.1039/D5CE00111K","DOIUrl":"https://doi.org/10.1039/D5CE00111K","url":null,"abstract":"<p >The present investigation focussed on assessing the ability of (4<em>R</em>,5<em>R</em>)-bis(diphenylhydroxymethyl)-2-spiro-1′-cyclohexane-1,3-dioxolane (TADDOL6) to separate pyridine/methylpyridine (picoline) mixtures through supramolecular chemistry protocols. At the outset, TADDOL6 was revealed to possess the ability to form 1 : 1 host : guest inclusion compounds with each of pyridine (PYR) and 2-, 3- and 4-methylpyridine (2MP, 3MP and 4MP) in single solvent crystallization experiments. This host compound, furthermore, demonstrated enhanced selectivities in PYR/MP mixtures: preferred guests were PYR and 3MP (in the absence of PYR), followed by 4MP and then 2MP. Subsequent binary guest competition experiments showed that TADDOL6 may be employed in order to effectively separate very many of these mixtures in this way, and significant selectivity coefficients (<em>K</em>) were calculated in numerous instances. Single crystal X-ray diffraction (SCXRD) experiments showed that the only significant (host)π⋯π(guest) stacking interactions were those between TADDOL6 and the preferred PYR and 3MP guest molecules, while a consideration of Hirshfeld surfaces demonstrated that these preferred guests were involved in a tighter packing motif with TADDOL6 than those with 2MP and 4MP. Results from thermal analyses, more specifically when determining the guest release onset temperatures (<em>T</em><small>_on</small>) and the enthalpies associated with these release processes, also agreed with the host selectivity order in the mixed guest competition experiments.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 13","pages":" 1960-1976"},"PeriodicalIF":2.6,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ce/d5ce00111k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688246","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":"Unveiling POM–peptide complexes: molecular insights into metal oxide nanoparticle–protein interactions","authors":"Björn H. Greijer and Vadim G. Kessler","doi":"10.1039/D4CE01269K","DOIUrl":"https://doi.org/10.1039/D4CE01269K","url":null,"abstract":"<p >Mineral nanoparticles (NPs) play a crucial role in biological systems, exhibiting enzyme-like “nanozyme” activity in protein oxidation and hydrolysis. To study NP interactions at the molecular level, we characterized complexes of peptides with poly-oxo-metalate (POM) species, the smallest known NPs. Our findings highlight the importance of factors such as metal–oxygen bond polarity, peptide hydrophilicity, medium conditions, and structure-directing amino acids. Using single-crystal models and 2D NMR, we also explored interactions between larger NPs as nanozymes and proteins relevant for specific oxidation of amino acids and proteins.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 12","pages":" 1679-1686"},"PeriodicalIF":2.6,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ce/d4ce01269k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632270","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":"One-step solvothermal in situ synthesis of NiMOF nanosheets for high-performance supercapacitor applications†","authors":"Xiaojing Wang, Fenglian Lu, Zongjin Wu, Kuantao Zhang, Song Li, Rui Tu, Sha Luo, Hongyan Pan, Keliang Wang and Qian Lin","doi":"10.1039/D4CE01318B","DOIUrl":"https://doi.org/10.1039/D4CE01318B","url":null,"abstract":"<p >In this study, NiMOF nanosheets were successfully synthesised on nickel foam using a simple solvothermal method. The nanosheets self-assembled on the nickel foam to form a uniform open pore structure, which allowed the electrode material to expose more active sites. This method avoided the use of insulating binders and additional electrode treatments, simplified the preparation process of NiMOFs, and improved the conductivity and mechanical stability of the electrode materials. The prepared NMF-1 electrode exhibited a specific capacitance of 1238 F g<small>⁻¹</small> at 1 A g<small>⁻¹</small> and maintained a high specific capacitance of 840 F g<small>⁻¹</small> at 5 A g<small>⁻¹</small>. The assembled asymmetric supercapacitor (ASC) exhibited a specific capacitance of 126.56 F g<small>⁻¹</small> at 1 A g<small>⁻¹</small>, specific capacitance retention rate of 81.2% at 5 A g<small>⁻¹</small>, and an energy density of 45 W h kg<small>⁻¹</small> at a power density of 800 W kg<small>⁻¹</small>. These results indicate that mixed solvent-modulated <em>in situ</em> growth of NiMOF nanosheets on nickel foam has great potential in supercapacitor applications.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 12","pages":" 1806-1815"},"PeriodicalIF":2.6,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632288","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":"High crystal quality and purity Cu2O by consecutive in situ annealing and thermal oxidation of Cu under H2 and O2 at elevated temperatures†","authors":"Matthew Zervos, Ioannis Paschos, Pavlos Savvidis, Nikoletta Florini, Konstantinos Koutsokostas, Philomela Komninou, Nektarios N. Lathiotakis, P. M. Levendis and Sarantos Marinakis","doi":"10.1039/D4CE01276C","DOIUrl":"https://doi.org/10.1039/D4CE01276C","url":null,"abstract":"<p >Cu<small>₂</small>O has been obtained <em>via</em> the thermal oxidation of Cu foils with a maximum thickness of 120 μm under Ar and O<small>₂</small> at 1020 °C for 30 min. Care was taken to suppress the oxidation of Cu during the temperature ramp by using H<small>₂</small> prior to admitting O<small>₂</small> at 1020 °C. We suggest that the ruby red Cu<small>₂</small>O crystals are obtained in this way by strain-driven grain growth and consist of ∼500 μm grains that have a cubic crystal structure. More importantly we find that the crystal quality and purity of the Cu<small>₂</small>O is improved significantly by pre-annealing the Cu under Ar and H<small>₂</small> at 1000 °C and 10 mbar for up to 180 min. The Cu<small>₂</small>O exhibited photoluminescence at 6.5 K with a maximum at 2.01 eV corresponding to the direct energy gap in very good agreement with density functional theory calculations of the electronic band structure. No emission due to recombination of bound excitons to copper vacancies V<small>_Cu</small> and single V<small>_O</small> or double charged V<small>_O</small> oxygen vacancies was observed consistent with high crystal quality Cu<small>₂</small>O. We find that the Cu<small>₂</small>O crystals obtained in this way are p-type and the highest mobility measured at room temperature was <em>μ</em><small>_p</small> = 82 cm V<small>⁻¹</small> s<small>⁻¹</small> with a carrier density of 7.3 × 10 cm<small>³</small>.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 13","pages":" 1977-1985"},"PeriodicalIF":2.6,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ce/d4ce01276c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688247","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":"Metal–organic framework-based catalysts toward the electrosynthesis of urea","authors":"Krishna Chattopadhyay, Mousumi Bhul, Prajita Kundu, Manas Mandal and Dilip K. Maiti","doi":"10.1039/D5CE00139K","DOIUrl":"https://doi.org/10.1039/D5CE00139K","url":null,"abstract":"<p >Nitrogen-based fertilizer, primarily urea, production generates 2.1% of global CO<small>₂</small> emissions through the energy-intensive Bosch–Meiser process. Electrochemical urea synthesis offers a sustainable alternative by significantly reducing greenhouse gas emissions and energy consumption. While numerous review articles have focused on the electrocatalytic synthesis of urea using nanostructures or heterostructures composed of transition metal alloys that leverage the synergistic effects of distinct metal catalytic sites, no comprehensive reviews have explored the application of metal–organic frameworks (MOFs) in this context. Following the publication of the <em>Nature Synthesis</em> paper in 2024, which reported a nearly fivefold increase in yield rate compared to existing catalysts, we revisited the electrosynthesis of urea using MOF materials. Over the past two years, a few high-impact papers have been published on MOF-based materials, which have emerged as promising catalysts for electrochemical urea synthesis, demonstrating notable efficiency and stability. This review aims to highlight these MOF-based materials, their catalytic performance, and underlying mechanism in electrocatalytic urea synthesis.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 11","pages":" 1521-1528"},"PeriodicalIF":2.6,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602088","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":"UiO66-NH2@In2O3 heterostructures for improved photocatalytic CO2 reduction†","authors":"Bolin Ma, Guanghui Chen, Lingling Zhou, Chengyang Ni, Xinyu Sun, Lei Zhang, Xinguo Xi, Lanqin Tang and Yong Zhou","doi":"10.1039/D5CE00106D","DOIUrl":"https://doi.org/10.1039/D5CE00106D","url":null,"abstract":"<p >The development of highly efficient photocatalysts for CO<small>₂</small> reduction remains a critical challenge in achieving sustainable energy conversion. In this study, we report the synthesis of a UiO66-NH<small>₂</small>@In<small>₂</small>O<small>₃</small>, integrating UiO66-NH<small>₂</small> metal organic frameworks (MOFs) with indium oxide (In<small>₂</small>O<small>₃</small>) nanoparticles, forming a robust heterostructure. Characterization results demonstrated that calcination at 250 °C for 4 hours yielded a heterostructure with indium uniformly incorporated, as confirmed by XRD, SEM, TEM and ICP-OES analyses. XPS studies revealed significant electronic interactions between UiO66-NH<small>₂</small> and In<small>₂</small>O<small>₃</small>, including shifts in binding energies of indium and zirconium, indicative of chemical bonding. This heterostructure facilitated enhanced charge separation and transfer, as evidenced by photocurrent measurements, leading to superior photocatalytic CO<small>₂</small> reduction performance. Under light irradiation, UiO66-NH<small>₂</small>@In<small>₂</small>O<small>₃</small> achieved a CO production rate of 83.68 μmol g<small>⁻¹</small> during the first hour and a cumulative yield of 485.08 μmol g<small>⁻¹</small> after 7 hours, significantly outperforming pristine UiO66-NH<small>₂</small> and In<small>₂</small>O<small>₃</small>. The superior activity is attributed to the large surface area of UiO66-NH<small>₂</small>, facilitating CO<small>₂</small> adsorption, and the heterojunction formation with In<small>₂</small>O<small>₃</small>, enhancing charge carrier dynamics. These findings highlight the synergistic effects of UiO66-NH<small>₂</small> and In<small>₂</small>O<small>₃</small>, providing insights into the design of advanced photocatalysts for environmental and energy applications.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 12","pages":" 1781-1788"},"PeriodicalIF":2.6,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632285","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":"Ionization treatment of pyrazolo[4,3-c]pyrazole derivatives to achieve the low sensitivity of high-energy materials†","authors":"Lei Shi, Bangxiang Liu, Pengfei Wang, Chao Gao, Chong Zhang, Yang Du, Chengguo Sun and Bingcheng Hu","doi":"10.1039/D4CE01286K","DOIUrl":"https://doi.org/10.1039/D4CE01286K","url":null,"abstract":"<p >Low mechanical sensitivity is an evaluation index for the development of safe and stable high-energy materials. Herein, 3,6-dinitropyrazolo[4,3-<em>c</em>]pyrazole (DNPP) and its ionic salts <strong>1–4</strong> with a fused-ring backbone were synthesized based on 6-nitro-pyrazolo[4,3-<em>c</em>]pyrazole-3-carbonic acid. Their crystal structures were determined by single crystal X-ray diffraction, and the abundant hydrogen bonds and π–π stacking in the crystal contribute to decreasing the mechanical sensitivity. The synthesized ionic salts <strong>1–4</strong> present low sensitivity features (FS &gt;360 N and IS &gt;20 J), much lower than that of their precursor DNPP (FS = 160 N and IS = 15 J). The detonation performance test shows that hydroxylammonium ionic salt <strong>3</strong> with a density of 1.863 g cm<small>⁻³</small> has the highest detonation velocity of 9.06 km s<small>⁻¹</small> and detonation pressure of 34.47 GPa, which is increased by 8.9% and 20.5% as compared with that of DNPP (8.25 km s<small>⁻¹</small> and 27.4 GPa). To expand the substituents of the fused-ring backbone, 4,5-diamino-3-(6-nitro-1,4-dihydropyrazolo[4,3-<em>c</em>]pyrazol-3-yl)-4<em>H</em>-1,2,4-triazole (<strong>5</strong>) was synthesized, and its ionic salt <strong>6</strong> indicated the excellent insensitive features (FS &gt;360 N and IS &gt;40 J). Even though salt <strong>6</strong> contains water of crystallization, it still exhibits excellent detonation performance comparable to RDX.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 13","pages":" 1918-1926"},"PeriodicalIF":2.6,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688228","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":"Mononuclear complexes of dysprosium(iii) with 2,6-diacetylpyridine bis(isonicotinoylhydrazone): synthesis, crystal structure, and magnetic properties†","authors":"Vyacheslav A. Kopotkov, Leokadiya V. Zorina, Sergey V. Simonov, Denis V. Korchagin, Mikhail V. Zhidkov, Alexei I. Dmitriev, Ghodrat Mahmoudi and Eduard B. Yagubskii","doi":"10.1039/D5CE00066A","DOIUrl":"https://doi.org/10.1039/D5CE00066A","url":null,"abstract":"&lt;p &gt;Four discrete mononuclear Dy(&lt;small&gt;III&lt;/small&gt;) coordination compounds with the pentadentate N&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;O&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt; equatorial ligand 2,6-diacetylpyridine-bis(isonicotinoylhydrazone) (H&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;dapin) in different charge states, containing the strong-field ligands Ph&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;PO and Cy&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;PO at the apical positions, have been synthesized: [Dy(H&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;dapin)(Ph&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;PO)&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;](CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;SO&lt;small&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;/small&gt;)&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt; (&lt;strong&gt;1&lt;/strong&gt;), [Dy(Hdapin)(Ph&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;PO)&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;](ClO&lt;small&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;/small&gt;)&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;·C&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;H&lt;small&gt;&lt;sub&gt;5&lt;/sub&gt;&lt;/small&gt;OH·1.9H&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;O (&lt;strong&gt;2&lt;/strong&gt;), [Dy(Hdapin)(Cy&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;PO)&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;](CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;SO&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;)&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt; (&lt;strong&gt;3&lt;/strong&gt;) and [Dy(Hdapin)(Cy&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;PO)&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;] [Dy(dapin)(Cy&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;PO)&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;](CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;SO&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;)&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt; (&lt;strong&gt;4&lt;/strong&gt;). The crystal structures of the complexes and DC and AC magnetic properties of &lt;strong&gt;1&lt;/strong&gt; and &lt;strong&gt;3&lt;/strong&gt; have been investigated. Complexes &lt;strong&gt;1&lt;/strong&gt; and &lt;strong&gt;2&lt;/strong&gt; with triphenylphosphinoxide apical ligands are eight-coordinated, whereas &lt;strong&gt;3&lt;/strong&gt; and &lt;strong&gt;4&lt;/strong&gt; with bulkier tricyclohexylphosphinoxide ligands are rare seven-coordinated Dy(&lt;small&gt;III&lt;/small&gt;) complexes. The pyridine-substituted pentadentate N&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;O&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt; ligand exhibits variability in composition and charge: neutral doubly-protonated H&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;dapin in complex &lt;strong&gt;1&lt;/strong&gt;, monodeprotonated negatively charged Hdapin&lt;small&gt;&lt;sup&gt;−&lt;/sup&gt;&lt;/small&gt; in &lt;strong&gt;2&lt;/strong&gt; and &lt;strong&gt;3&lt;/strong&gt;, and monodeprotonated Hdapin&lt;small&gt;&lt;sup&gt;−&lt;/sup&gt;&lt;/small&gt; and fully deprotonated dapin&lt;small&gt;&lt;sup&gt;2−&lt;/sup&gt;&lt;/small&gt; in &lt;strong&gt;4&lt;/strong&gt;. The proton at one of the hydrazide groups of the H&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;dapin ligand in &lt;strong&gt;1&lt;/strong&gt; is transferred to the terminal pyridine N atom. The resulting neutral H&lt;small&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;/small&gt;dapin ligand adopts a zwitterionic form with 1− charge localized on the enolate O atom of the deprotonated part and 1+ charge on the N atom of the protonated pyridine. The proton transfer to the pyridyl N-atom is observed in all Hdapin&lt;small&gt;&lt;sup&gt;−&lt;/sup&gt;&lt;/small&gt; ligands in &lt;strong&gt;2–4&lt;/strong&gt;. According to SHAPE analysis, complexes &lt;strong&gt;1&lt;/strong&gt; and &lt;strong&gt;3&lt;/strong&gt; have significantly different local symmetries – low &lt;em&gt;D&lt;/em&gt;&lt;small&gt;&lt;sub&gt;2d&lt;/sub&gt;&lt;/small&gt; (highly distorted 8-vertex triangular dodecahedron) and high &lt;em&gt;D&lt;/em&gt;&lt;small&gt;","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 13","pages":" 2012-2024"},"PeriodicalIF":2.6,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688251","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":"Visualization of level-3 latent fingerprints by surfactant-free CsPbBr3 MCs with Pb(OH)2 as a passivation layer and an anchored bridge†","authors":"Guoxin Zhuang, Yujing Li, Xiaodi Chu, Xianghui Lai, Zhiyu Liang, Xiaohui Lin, Yonglin Wen, Guosong Lin, Zhechong Zheng and Chonghui Li","doi":"10.1039/D4CE01004C","DOIUrl":"https://doi.org/10.1039/D4CE01004C","url":null,"abstract":"<p >The visualization of level 3 fingerprint features, such as pore size, spacing, and distribution, plays a crucial role in matching damaged latent fingerprints (LFPs). CsPbBr<small>₃</small> microcrystals (MCs) show great potential for LFP visualization, but the use of organic surface passivation can deteriorate their fluorescence properties and reduce imaging quality. In this study, we developed CsPbBr<small>₃</small> MCs with a Pb(OH)<small>₂</small> passivation layer formed through a methylamine vapor phase transition, replacing the need for organic passivators. Thanks to the hydrophobic nature and hydrogen bonding properties of Pb(OH)<small>₂</small>, the CsPbBr<small>₃</small> MCs demonstrate excellent structural and fluorescence properties, while also anchor effectively to amino acids. Beyond the pressure deficit mechanism, FT-IR analysis and theoretical calculations confirm that the –COOH groups in amino acids form hydrogen bonds with the OH groups of Pb(OH)<small>₂</small>, leading to the absorption of CsPbBr<small>₃</small> MCs onto fingerprint ridges. This results in superior visualization of level 3 fingerprint details, offering new insights into the development of surfactant-free inorganic materials for fluorescence imaging.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 12","pages":" 1763-1772"},"PeriodicalIF":2.6,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632283","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":"Enhanced luminescence in 1D corrugated lead bromides via reduced flexibility of trivalent cations†","authors":"Chang-Chun Fan, Zi-Han Fang, Shu-Lin Jiao, Jing-Xue Yu, Cheng-Dong Liu, Wei Wang, Ming-Liang Jin, Bei-Dou Liang and Xiang-Bin Han","doi":"10.1039/D5CE00003C","DOIUrl":"https://doi.org/10.1039/D5CE00003C","url":null,"abstract":"<p >Hybrid metal halides (HMHs) have attracted considerable attention from researchers exploring broadband luminescence materials due to their low cost and excellent photophysical properties. Although lots of structures have been developed by researchers based on monovalent and bivalent cations, the importance of trivalent cations in the design of low-dimensional HMH materials with broadband luminescence has been overlooked. In our study, we obtained two new 1D corrugated structures (MPEA)PbBr<small>₅</small>·H<small>₂</small>O (MPEA is 4-methyl-1-piperazineethanammonium) and (PEA)<small>₂</small>Pb<small>₂</small>Br<small>₁₀</small>·H<small>₂</small>O (PEA is 1-piperazineethanammonium) based on trivalent cations, which can efficiently emit yellow-white light emission with CIE color coordinates of (0.35, 0.42) and (0.42, 0.47) at room temperature with a photoluminescence quantum yield of 0.6% and 10.9%, respectively. Our research underscores the advantages of utilizing low flexible trivalent cations in the development of HMHs with outstanding broadband emission performance and provides novel insight into the design of advanced solid-state luminescent materials.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 13","pages":" 1997-2003"},"PeriodicalIF":2.6,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ce/d5ce00003c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688249","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}