CrystEngComm最新文献

{"title":"R-Substituent vs. exocyclic oxygen: influence on synthesis and crystal packing of R-[1,2,5]oxadiazolo[3,4-c]cinnoline mono- and dioxides†","authors":"Victor P. Zelenov, Ivan V. Fedyanin, Aida I. Samigullina, Alexandr A. Larin and Aleksei B. Sheremetev","doi":"10.1039/D4CE01068J","DOIUrl":"https://doi.org/10.1039/D4CE01068J","url":null,"abstract":"<p >A series of R-[1,2,5]oxadiazolo[3,4-c]cinnoline 5-mono- and 1,5-dioxides containing substituents (R = CH<small>₃</small>, F, Br, CF<small>₃</small>) at different positions were synthesized by an N-nitration–annulation process occurring upon treatment of 3-amino-4-(R-aryl)furazans and 4-amino-3-(R-aryl)furoxans with the HNO<small>₃</small>–H<small>₂</small>SO<small>₄</small>–Ac<small>₂</small>O system. The regioselectivity of the ring closure step was determined for the unsymmetrically substituted R-aryl precursors. Unexpected acylation at position 6 of 7-bromo-[1,2,5]oxadiazolo[3,4-<em>c</em>]cinnoline 5-oxide occurred as a result of the increased duration of the synthesis. The crystal structures of five new compounds were determined by X-ray diffraction analysis, and their crystal packings were compared with each other and with those of previously studied molecules, revealing common motifs regardless of the type or position of the substituent. Specifically, the fluorine derivative forms layers isostructural with those in unsubstituted mono- and dioxides, differing only in their arrangement within the <em>P</em>2<small>₁</small> and <em>P</em>2<small>₁</small>/<em>c</em> space groups. Two methyl derivatives, on the other hand, exhibit a structure with flat layers. While the crystal environments of different R-substituents are generally distinct, the unsubstituted part of the heterocyclic core tends to form repeating isostructural motifs, such as dimers, chains, and layers. Although substituents disrupt the crystal packing, they still allow for the combination of these motifs in different crystal structures.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 3","pages":" 372-385"},"PeriodicalIF":2.6,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142962871","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 stacking types of three-dimensional cocrystal structures based on multiple hydrogen bonds†","authors":"Wenjin Yan, Tianwei Wang, Yingxin Hu, Longming Chen, Peng Wang, Chaoran Pang, Rongwen Lu and Shufen Zhang","doi":"10.1039/D4CE01071J","DOIUrl":"https://doi.org/10.1039/D4CE01071J","url":null,"abstract":"<p >Two new three-dimensional (3D) cocrystals of trithiocyanuric acid (TTCA) with hexamethylenetetramine (HMTA) have been synthesized and characterized. In the cocrystal, the monolayer structure forms through N–H⋯N hydrogen bonds due to the establishment of recognition between the thioamide moiety and the N-hetero atom and is further enhanced by the in-plane C–H⋯S hydrogen bonds. Simultaneously, the lamellas consist of two layers, which are recognized by lone-pair⋯π interactions between TTCA molecules, and assembled by the out-of-plane C–H⋯S hydrogen bonds in combination with the spatial van der Waals repulsion between HMTA. Then, the π–hole-based recognizing interaction between the HMTA and TTCA in the neighbouring lamellas, which was assisted by multiple adaptive C–H⋯S hydrogen bonds, contributed to the enhancement of 3D directionality, leading to the construction of 3D structures. And the study found that the stacking types between the lamellas could change due to the competing intermolecular interactions and adaptive C–H⋯S hydrogen bonds, yielding the unit cell structures of two different molecular packing parameters. Thus, two 3D structures of cocrystals, the octahedral (Phpm-o) and polyhedral (Phpm-p), are generated. The growth of these cocrystals was systematically evaluated by predicting the BFDH morphology. Moreover, the importance of each type of intermolecular interaction was quantified by Hirshfeld surface analysis, especially the N–H⋯N, C–H⋯S, <em>etc.</em> Combined with Hirshfeld analysis, the important role of non-covalent forces in the construction of 3D structures was confirmed.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 2","pages":" 269-276"},"PeriodicalIF":2.6,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880266","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 superelastic and ultralight graphene aerogel with a hydrophobic honeycombed structure for efficient absorption of hazardous organics†","authors":"Qiaomu Zhang, Lehao Liu, Junfeng Ma, Haomiao Yang, Zhuoheng Wu, Chenhui Song and Jinkui Zhang","doi":"10.1039/D4CE01069H","DOIUrl":"https://doi.org/10.1039/D4CE01069H","url":null,"abstract":"<p >Environmentally friendly graphene-based aerogels have been utilized to recycle leaked organic solvents that pose a threat to the ecological environment. A two-step reduction process assisted by a microbubble technology is developed herein, enabling the successful preparation of an ultralight graphene aerogel (8.13 mg cm<small>⁻³</small>, and 99.63% porosity) with a honeycombed structure. Additionally, the introduction of 2,2-dimethyl-3-methylenenorbornane in the preparation process imparts superelasticity, allowing the aerogel to recover to nearly its original height after 20 axial compression cycles at a maximum strain of 90%. The subsequent annealing process further enhances the hydrophobicity of the graphene aerogel, resulting in a water contact angle of approximately 116°. Its absorption capacities for various organic solvents range from 73.01 to 140.18 g g<small>⁻¹</small>, and it achieves the absorption saturation in about 4 seconds for most organic solvents, demonstrating excellent absorption efficiency. Its superelasticity also enables its reusability through absorption–extrusion and absorption–combustion cyclic measurements. This study offers a novel method to prepare superelastic and ultralight graphene aerogel for efficient absorption of organic solvents for environmental protection.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 2","pages":" 238-246"},"PeriodicalIF":2.6,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880272","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":"Elastic, dielectric and piezoelectric properties of a EuCa4O(BO3)3 high-temperature piezoelectric crystal","authors":"Jie Feng, Linwen Jiang, Zhigang Sun, Chen Yang and Yanqing Zheng","doi":"10.1039/D4CE00876F","DOIUrl":"https://doi.org/10.1039/D4CE00876F","url":null,"abstract":"<p >The rare-earth oxyborate crystal RCa<small>₄</small>O(BO<small>₃</small>)<small>₃</small> (RCOB, R: rare-earth elements) is an inorganic photoelectric multifunctional material, which has important applications in the field of high-temperature piezoelectricity. In this work, a EuCa<small>₄</small>O(BO<small>₃</small>)<small>₃</small> (EuCOB) crystal with a diameter of 25 mm was successfully grown by the Bridgman method. The thermal conductivity, thermal diffusivity and specific heat of the EuCOB crystal at high temperature were measured. The dielectric coefficient, electromechanical coupling coefficient, elastic coefficient and piezoelectric coefficient of the EuCOB crystal at high temperature were measured by the resonance–antiresonance method. In particular, the shear piezoelectric coefficient <em>d</em><small>₂₆</small> of the EuCOB crystal is 7.01 pC N<small>⁻¹</small> at room temperature and 6.22 pC N<small>⁻¹</small> at 800 °C, with a small variation of 11.4%. The electrical resistivities of the EuCOB crystal along the <em>X</em>, <em>Y</em> and <em>Z</em> directions at 800 °C are 5.8 × 10<small>⁷</small> Ω cm, 3.1 × 10<small>⁷</small> Ω cm and 2.9 × 10<small>⁷</small> Ω cm, respectively. The large piezoelectric coefficient and high electrical resistivity indicate the potential application of the EuCOB crystal in a high-temperature piezoelectric field.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 2","pages":" 146-154"},"PeriodicalIF":2.6,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880462","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":"Chemical vapor transport synthesis of one-dimensional V2PS10 and its application in miniaturized UV sensors†","authors":"Jinsu Kang, Sooheon Cho, Xiaojie Zhang, Bom Lee, Byung Joo Jeong, Kyung Hwan Choi, Jiho Jeon, Sang Hoon Lee, Jae-Hyuk Park, Sang Hyuk Kim, Hak Ki Yu and Jae-Young Choi","doi":"10.1039/D4CE00779D","DOIUrl":"https://doi.org/10.1039/D4CE00779D","url":null,"abstract":"<p >This study investigates low-dimensional materials as a potential solution for the miniaturization of electronic devices, addressing the challenges posed by bulk materials. Our research successfully synthesized high-quality V<small>₂</small>PS<small>₁₀</small> crystals using the chemical vapor transport method and confirmed their dispersibility in various solvents and their potential for mechanical exfoliation. In addition, a UV-sensing device was fabricated to evaluate its performance. In particular, at a wavelength of 254 nm, the fabricated V<small>₂</small>PS<small>₁₀</small>-based UV sensor exhibited a stable response current of 1.5 pA, demonstrating rapid response characteristics. These results underscore the importance of stable synthesis techniques and highlight the potential of V<small>₂</small>PS<small>₁₀</small> as a one-dimensional UV-sensing material, thereby indicating its applicability to miniaturize electronic components.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 3","pages":" 366-371"},"PeriodicalIF":2.6,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142962869","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":"Cocrystals of [1,2,5]oxadiazolo[3,4-c]cinnoline 5-oxides and 1,5-dioxides: step-by-step development of crystal engineering of energetic materials†","authors":"N. M. Baraboshkin, V. P. Zelenov, I. V. Fedyanin, A. I. Samigullina and M. S. Klenov","doi":"10.1039/D4CE01081G","DOIUrl":"https://doi.org/10.1039/D4CE01081G","url":null,"abstract":"<p >In this work, the cocrystallization of both benzotrifuroxan (BTF) and [1,2,5]oxadiazolo[3,4-<em>e</em>][1,2,3,4]tetrazine 4,6-dioxide (furazanotetrazine dioxide, FTDO) with [1,2,5]oxadiazolo[3,4-<em>c</em>]cinnoline 5-oxide (FCO), 1,5-dioxide (FCDO) and some of their nitro derivatives was investigated, focusing on the cocrystal structural features and their detonation performance. First, cocrystallization energies using crystal structure prediction (CSP) methods, identifying energetically favorable component ratios for BTF and FTDO with cinnoline oxides, were calculated. Then two novel cocrystals, the BTF–FCDO <strong>4</strong> (1 : 2) and the FTDO–FCDO <strong>3</strong> (1 : 2) compositions, were prepared and characterized by X-ray diffraction and Hirshfeld surface analysis. The primary intermolecular interactions in BTF cocrystals include dominant <em>n</em>(NO<small>₂</small>)⋯π(BTF) contacts and π-stacking motifs, and in FTDO cocrystals, hydrogen-bonded synthons. The calculated energetic parameters were 7.37 km s<small>⁻¹</small> and 23.99 GPa for the FTDO (1 : 2) cocrystal, and 7.69 km s<small>⁻¹</small> and 26.4 GPa for the BTF (1 : 2) cocrystal. Their cocrystals (1 : 2) with FCDOs exhibited, compared to pure parent compounds, lower detonation velocities and pressures due to high FCDOs molar content, yet still outperformed conventional energetic compounds such as 2,4,6-trinitrotoluene (TNT) and 1,3,5-trinitrobenzene (TNB).</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 3","pages":" 386-399"},"PeriodicalIF":2.6,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142962872","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":"Tailoring the coordination microenvironment of Zn(ii) in a light-responsive coordination polymer system for molecular sensing and photodegradation performance†","authors":"Yan Zhao, Xing Zhou, Zheng-Yu Liu, Jia-Jun Wang, Bo Ding, Gui-Xi Liu and En-Cui Yang","doi":"10.1039/D4CE00952E","DOIUrl":"https://doi.org/10.1039/D4CE00952E","url":null,"abstract":"<p >The behaviour of photoexcited electrons in light-responsive coordination polymers (CPs) significantly determines their performance in fluorescence sensing, smart materials, photoelectric display and photocatalysis, and this behaviour can be skilfully manipulated by optimizing the geometric and electronic structures of the ligand field around the metal ion. To reveal the micro-environmental effect of the ligand field on the bandgap and photoexcited electrons, three semiconductive Cd(<small>II</small>)-based CPs have been achieved through coordination of π-conjugated 2,6-bis(2-pyrazin-2-yl)-4-(4-(tetrazol-5-yl)phenyl)pyridine (HL) and 1,3,5-benzenetricarboxylic acid (H<small>₃</small>BTC) with Cd(<small>II</small>) ion. Possessing N<small>₃</small>O<small>₄</small> and O<small>₆</small> donors, complex <strong>1</strong> assumed an extended triple-decker sandwich structure with a central {Cd<small>₂</small>(BTC)} sheet terminated up and down by planar L<small>⁻</small> spacers. Two quadrangular {Cd<small>₂</small>(L)<small>₂</small>} dimers with N<small>₄</small>O<small>₃</small> and N<small>₄</small>O<small>₂</small> donors were propagated by doubly deprotonated HBTC<small>²⁻</small> connectors to the cationic (4 4) layer of <strong>2</strong>. The reproducible {Cd<small>₂</small>(L)<small>₂</small>} dimers with only N<small>₄</small>O<small>₃</small> donors in <strong>3</strong> were extended by mirror-symmetric HBTC<small>²⁻</small> linkers to a bent chain. The distinct donor combinations in the local ligand fields of Cd(<small>II</small>) ions dominated the bandgaps and movements of the charge-carriers. Emitting intense steel blue fluorescence, complex <strong>1</strong> served as a highly efficient bilirubin probe with a quenching constant up to 9.48 × 10<small>⁴</small> M<small>⁻¹</small> driven by photo-induced electron charge and Förster resonance energy transfer. In contrast, complex <strong>2</strong>, with excellent separation efficiency of charge carriers, acted as a photocatalyst to completely degrade methylene blue up to 97% within 90 minutes of UV irradiation. Apparently, slight modifications of the surroundings of the ligand field by a heterodonor strategy achieved a remarkable effect on the photophysical properties of the semiconductive CPs, providing valuable hints for the construction of photosensitive CPs.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 3","pages":" 325-336"},"PeriodicalIF":2.6,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142962905","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":"Chain-based fluorescent TbIII metal–organic framework with good stability as a blue-shift and turn-on sensor toward H2PO4−†","authors":"Shi-Xian Xu, Na Lu, Li Wang and Sui-Jun Liu","doi":"10.1039/D4CE01073F","DOIUrl":"https://doi.org/10.1039/D4CE01073F","url":null,"abstract":"<p >Dihydrogen phosphate (H<small>₂</small>PO<small>₄</small><small>⁻</small>) in food and the environment is one of the major concerns for human health. Over the past few years, a large number of fluorescent metal–organic frameworks (MOFs) have been studied to explore desirable methods for selective analysis because fluorescence techniques have high sensitivity and are easy to operate. Herein, a chain-based MOF derived from Tb<small>^III</small> clusters {[Tb<small>₃</small>(BTDB)<small>₃</small>(μ<small>₃</small>-OH)<small>₃</small>(H<small>₂</small>O)]·solvents}<small>_<em>n</em></small> (<strong>JXUST-52</strong>, H<small>₂</small>BTDB = (benzo[<em>c</em>][1,2,5]thiadiazole-4,7-diyl)dibenzoic acid) was successfully synthesized and structurally characterized. Single-crystal X-ray diffraction showed that three adjacent Tb<small>^III</small> ions were connected <em>via</em> carboxylate oxygen and μ<small>₃</small>-OH<small>⁻</small>, forming an infinite chain structure along the <em>b</em> axis. The neighbouring chains were linked by BTDB<small>²⁻</small> ligands to finally form a chain-based 3D structure. <strong>JXUST-52</strong> exhibited relatively good thermal and chemical stabilities and can specifically recognize H<small>₂</small>PO<small>₄</small><small>⁻</small> through luminescence enhancement and blue shift with a detection limit of 0.016 mM. Furthermore, the significant luminescence enhancement and blue shift under UV lamp irradiation were observable by the naked eye. The luminescence sensing mechanism is attributed to absorbance-induced enhancement between <strong>JXUST-52</strong> and H<small>₂</small>PO<small>₄</small><small>⁻</small>. In addition, lamp beads and test paper based on <strong>JXUST-52</strong> were designed for the detection of H<small>₂</small>PO<small>₄</small><small>⁻</small> in practical application.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 3","pages":" 415-420"},"PeriodicalIF":2.6,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142962875","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":"Optical properties of [MMim]2[CuI3] crystals with 0D single-core trigonal planar structures†","authors":"Jiali Han, Shujun Zhu, Xinxin Chen, Haichao Zhou, Jianguo Pan and Shangke Pan","doi":"10.1039/D4CE00750F","DOIUrl":"https://doi.org/10.1039/D4CE00750F","url":null,"abstract":"<p >In recent years, lead-free organic–inorganic hybrid zero-dimensional metal halides have attracted considerable attention due to their outstanding optical properties, largely attributed to the confinement of localized metal groups. We report the discovery of a newly structured [MMim]<small>₂</small>[CuI<small>₃</small>] crystal with a distinct [CuI<small>₃</small>]<small>²⁻</small> trigonal planar structure encapsulated by inert organic [MMim]<small>⁺</small> clusters. The structure, composition, and thermal stability of the crystal were analyzed using XRD and TG–DTA. The optical properties of [MMim]<small>₂</small>[CuI<small>₃</small>] crystals were both experimentally measured and theoretically calculated. These crystals exhibit intense broadband orange luminescence with pronounced Stokes shifts and a microsecond-scale fluorescence lifetime decay, primarily due to self-trapped exciton emission. Temperature-dependent fluorescence spectra were also recorded to explore the luminescence mechanism. In summary, these findings highlight the remarkable potential of lead-free [MMim]<small>₂</small>[CuI<small>₃</small>] crystals in advancing optoelectronic applications.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 1","pages":" 38-45"},"PeriodicalIF":2.6,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826032","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 comparative analysis of structural and luminescence properties of homoepitaxially and quasi-homoepitaxially grown LuAG:Ce single crystalline films under ambient and high pressure†","authors":"A. Markovskyi, Yu. Syrotych, N. Majewska, M. Kamiński, V. Gorbenko, T. Zorenko, A. Wierzbicka, A. Suchocki, S. Mahlik and Yu. Zorenko","doi":"10.1039/D4CE00909F","DOIUrl":"https://doi.org/10.1039/D4CE00909F","url":null,"abstract":"<p >This work is dedicated to investigating the structural, luminescence and photocurrent characteristics of LuAG:Ce single crystalline films grown using the liquid phase epitaxy method on both LuAG and YAG substrates. The primary objective is to analyze the influence of different growth modes, namely <em>homoepitaxial</em> and <em>quasi-homoepitaxial</em>, on the structural and luminescence properties of Ce<small>³⁺</small> ions in these films under ambient and high-pressure conditions. Based on the results of X-ray diffraction measurements, we can conclude that both epitaxial structures <em>are fully relaxed</em>. However, a slight deformation of the garnet lattices is observed, manifesting the inequality of the <em>in-plane</em> and <em>out-of-plane</em> lattice constants of substrates and films. The difference in the energy gap values between positions of 4f–5d<small>_1,2</small> Ce<small>³⁺</small> absorption bands (6–12 meV) and the positions of the Ce<small>³⁺</small> emission band (6 meV) was observed for both LuAG:Ce films and caused by the small differences in local perturbations of garnet hosts for epitaxial structures, grown in <em>homoepitaxial</em> and <em>quasi-homoepitaxial</em> modes. The Ce<small>³⁺</small> emission intensity in both LuAG:Ce films decreases with temperature in the 10–300 K range. The decay time of the Ce<small>³⁺</small> luminescence in the LuAG:Ce <em>homoepitaxially-grown</em> film demonstrates a weak temperature dependence in the mentioned range. However, in the LuAG:Ce <em>quasi-homoepitaxially-grown</em> film, the decay time of the Ce<small>³⁺</small> emission shows notable temperature dependences in the 10–300 K range, probably due to the formation of Ce<small>⁴⁺</small>–Pb<small>²⁺</small> pair centers. The non-monotonical redshift of the Ce<small>³⁺</small> emission band and the increase of the Ce<small>³⁺</small> decay time are observed in both LuAG:Ce films under increasing external pressure from ambient to 19 GPa due to the compression and distortion of the crystal lattice. The redshift changes of the Ce<small>³⁺</small> emission band on pressure are significantly more complicated for the LuAG:Ce <em>quasi-homoepitaxially</em>-grown film than the <em>homoepitaxially-grown</em> counterpart. The outcomes of this study contribute to the fundamental understanding of epitaxial growth processes and their impact on the luminescence characteristics of rare-earth-doped materials in the single crystalline film form.</p>","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 2","pages":" 256-268"},"PeriodicalIF":2.6,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142880270","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}