Crystal Growth & Design最新文献

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Mussel-Inspired Sequential Coating Strategy for High-Density CoNi Bimetallic Tubular Structured Magnetic Composites with Enhanced Catalytic Performance 具有增强催化性能的高密度CoNi双金属管状结构磁性复合材料的贻贝启发序贯涂层策略
IF 3.6 2区 化学
Crystal Growth & Design Pub Date : 2026-10-07 Epub Date: 2026-09-24 DOI: 10.1021/acs.cgd.6c01058
Yi Deng, Shengke Wu, Suping Han, Xue-Bo Yin, Jingli Xu, Min Zhang
{"title":"Mussel-Inspired Sequential Coating Strategy for High-Density CoNi Bimetallic Tubular Structured Magnetic Composites with Enhanced Catalytic Performance","authors":"Yi Deng,&nbsp;Shengke Wu,&nbsp;Suping Han,&nbsp;Xue-Bo Yin,&nbsp;Jingli Xu,&nbsp;Min Zhang","doi":"10.1021/acs.cgd.6c01058","DOIUrl":"https://doi.org/10.1021/acs.cgd.6c01058","url":null,"abstract":"<p>The rational design of tubular nanostructures with controllable spatial distribution of bimetallic nanoparticles(NPs) is of vital importance for advancing high-performance catalytic systems, yet remains a significant synthetic challenge. To address this, we developed two synthetic routes to obtain one-dimensional (1D) tubular CoNi-based magnetic nanostructures through a combination of hydrothermal reaction, classical Stöber method, mussel-inspired coating, and carbonization strategy. Route 1 involves MoO<sub>3</sub>@CoNi-LDH microrods coated with SiO<sub>2</sub> and subsequently with a polydopamine-Ni<sup>2+</sup> (PDA-Ni<sup>2+</sup>) layer, followed by pyrolysis under nitrogen to yield CoNi@SiO<sub>2</sub>@NC-Ni composites; Route 2 employs MoO<sub>3</sub>@CoNi-LDH coated first with PDA-Ni<sup>2+</sup> and then with SiO<sub>2</sub>, followed by thermal treatment to give CoNi@NC@SiO<sub>2</sub> composites. Notably, our findings confirm that only Route 1 leads to the formation of both a high-coverage outer layer of Ni NPs and inner CoNi bimetallic NPs. Detailed characterization of the CoNi-based magnetic composites obtained via Route 1 revealed superior catalytic performance compared to Route 2, attributed to their unique structure and high density of Ni and CoNi NPs. These results demonstrate that this coating strategy is highly beneficial for the synthesis of CoNi-based bimetallic composites with 1D hollow structures, paving a novel pathway for preparing high-density bimetallic magnetic composites.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"26 19","pages":"7901–7911"},"PeriodicalIF":3.6,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Probing the Polymorphic Landscape of ROY through Selective Deuteration 通过选择性氘化探讨ROY的多态景观
IF 3.6 2区 化学
Crystal Growth & Design Pub Date : 2026-10-07 Epub Date: 2026-09-26 DOI: 10.1021/acs.cgd.6c00820
Priya Pandey, Michal G. Nowak, Juliusz Walczak, Yves H. Geerts
{"title":"Probing the Polymorphic Landscape of ROY through Selective Deuteration","authors":"Priya Pandey,&nbsp;Michal G. Nowak,&nbsp;Juliusz Walczak,&nbsp;Yves H. Geerts","doi":"10.1021/acs.cgd.6c00820","DOIUrl":"https://doi.org/10.1021/acs.cgd.6c00820","url":null,"abstract":"<p><strong>ROY</strong> is an iconic polymorphic system, known for its red, orange, and yellow crystal forms that arise from subtle differences in molecular conformation and packing. Here, we examine how this well-established solid-state landscape responds to one of the smallest possible structural modifications: selective H/D substitution. Three selectively deuterated analogues, <strong>ROY-D1</strong>, <strong>ROY-D4</strong>, and <strong>ROY-D8</strong>, containing one, four, and eight deuterium atoms, respectively, were synthesized and subjected to systematic polymorph screening using solution crystallization, solvothermal methods, liquid-assisted grinding, and melt crystallization. The resulting forms reveal extensive isostructural relationships with known <strong>ROY</strong> polymorphs while preserving the characteristic correlation between molecular torsion angle and crystal color. Overall, the deuterated analogues largely preserve the ROY crystal-structure landscape, retaining known packing types and the torsion-angle−color relationship, while showing subtle differences in polymorph formation, thermal transitions, and storage-related thermal response.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"26 19","pages":"7725–7733"},"PeriodicalIF":3.6,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Unconventional Plasticizer Strategy for Stabilizing Ternary Coamorphous Polyphenol Systems: Mechanistic Insight into Dynamic Hydrogen Bonding 稳定三元共晶多酚体系的非常规增塑剂策略:动态氢键的机制洞察
IF 3.6 2区 化学
Crystal Growth & Design Pub Date : 2026-10-07 Epub Date: 2026-09-24 DOI: 10.1021/acs.cgd.6c00652
Mengjie Wang, Jinping Ke, Jiawei Yuan, Yaru Zhao, Qianyi Zhai, Lijun Hu, Rongrong Huang, Wenjun Miao, Weili Heng
{"title":"An Unconventional Plasticizer Strategy for Stabilizing Ternary Coamorphous Polyphenol Systems: Mechanistic Insight into Dynamic Hydrogen Bonding","authors":"Mengjie Wang,&nbsp;Jinping Ke,&nbsp;Jiawei Yuan,&nbsp;Yaru Zhao,&nbsp;Qianyi Zhai,&nbsp;Lijun Hu,&nbsp;Rongrong Huang,&nbsp;Wenjun Miao,&nbsp;Weili Heng","doi":"10.1021/acs.cgd.6c00652","DOIUrl":"https://doi.org/10.1021/acs.cgd.6c00652","url":null,"abstract":"<p>Coamorphous formulations have emerged as a promising strategy to improve the solubility and bioavailability of poorly soluble drugs, but their application is often limited by inherent thermodynamic instability. Herein, we propose an unconventional plasticizer strategy to stabilize coamorphous systems. The ternary coamorphous systems of baicalein (Bai), piperine (Pip), and resveratrol (Res) at 1:1:1, 1:2:1, 1:3:1, and 1:4:1 molar ratios were successfully prepared and exhibited enhanced supersaturated dissolution profiles, with approximately 3.4-, 5.3-, and 4.6-fold increases in the apparent solubilities of Bai, Pip, and Res, respectively. Pip as a plasticizer increased molecular mobility and lowered <em>T</em><sub>g</sub> from 107.5 to 52.3, 45.7, and 37.5 °C with increasing Pip content. Unexpectedly, coamorphous systems with higher Pip ratios exhibited enhanced physical stability. Fourier-transform infrared (FT-IR) spectroscopy, nuclear magnetic resonance spectroscopy, molecular dynamics simulations, and quantum chemical calculations revealed a composition-dependent redistribution of intermolecular interactions. With increasing Pip content, Pip preferentially associated with Res and subsequently interacted with Bai, progressively disrupting the pre-existing Res−Bai hydrogen bond (HB). Meanwhile, the normalized HB numbers decreased, while the normalized binding energies remained nearly unchanged. Furthermore, the systems with a higher Pip ratio prolonged the intermittent HB lifetime with fast HB breaking and reformation (i.e., dynamic hydrogen bonding). Pip-mediated interaction reorganization and dynamic HB jointly contributed to the improved stability. This work provides a promising strategy for stabilizing coamorphous systems <em>via</em> plasticizers capable of establishing reorganized heteromolecular interactions and dynamic hydrogen bonding.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"26 19","pages":"7605–7620"},"PeriodicalIF":3.6,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ethanol Vapor Modulates Hydrate Shell Growth and Persistence on Ice 乙醇蒸气调节水合壳在冰上的生长和持久性
IF 3.6 2区 化学
Crystal Growth & Design Pub Date : 2026-10-07 Epub Date: 2026-09-08 DOI: 10.1021/acs.cgd.6c01116
Huiyong Liang, Haihong Chen, Rui Qin, Yu Feng, Lingjie Sun, Shi Shen, Tao Liu, Xin Lv
{"title":"Ethanol Vapor Modulates Hydrate Shell Growth and Persistence on Ice","authors":"Huiyong Liang,&nbsp;Haihong Chen,&nbsp;Rui Qin,&nbsp;Yu Feng,&nbsp;Lingjie Sun,&nbsp;Shi Shen,&nbsp;Tao Liu,&nbsp;Xin Lv","doi":"10.1021/acs.cgd.6c01116","DOIUrl":"https://doi.org/10.1021/acs.cgd.6c01116","url":null,"abstract":"<p>Hydrate formation on ice is an interfacial crystallization process governed by thermodynamic driving force and the evolving state of the ice surface and hydrate shell. Here, in situ micro-X-ray computed tomography was used to visualize xenon hydrate formation on single ice particles after ethanol-vapor exposure from −50 to −5 °C under different operational ethanol addition levels. These levels were defined by injection duration and do not represent measured interfacial ethanol doses. Without ethanol, hydrate formation proceeded slowly through surface-layer growth; at −50 °C, only a very thin local hydrate layer was observed after 77.8 h. Under high operational ethanol addition at −10 °C, the ice surface evolved before xenon charging, followed by loose flocculent hydrate formation, shell growth around a shrinking ice core, and late-stage hydrate dissociation. At −20 °C, increasing operational ethanol addition was associated with an ordered progression toward greater shell roughness and spatial heterogeneity. At −50 °C, a clear shell was visible by 620 min after xenon charging without XCT-resolved pre-charging surface deformation. Thus, the XCT observations establish distinct, condition-dependent pathways of hydrate-shell development and persistence following ethanol-vapor conditioning, while their molecular origins require further compositional and spectroscopic verification.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"26 19","pages":"7938–7949"},"PeriodicalIF":3.6,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149093566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Co-Crystallization Process of Colchicine Cocrystals and Their Thermodynamic Properties 秋水仙碱共晶的共晶过程及其热力学性质
IF 3.6 2区 化学
Crystal Growth & Design Pub Date : 2026-10-07 Epub Date: 2026-09-25 DOI: 10.1021/acs.cgd.6c00608
Yuze Xie, Duying Zhang, Yang Zhang
{"title":"Co-Crystallization Process of Colchicine Cocrystals and Their Thermodynamic Properties","authors":"Yuze Xie,&nbsp;Duying Zhang,&nbsp;Yang Zhang","doi":"10.1021/acs.cgd.6c00608","DOIUrl":"https://doi.org/10.1021/acs.cgd.6c00608","url":null,"abstract":"<p>Two structurally similar cocrystals, colchicine/L-malic acid (COL/L-MA) and colchicine/D-tartaric acid (COL/D-TA), were prepared to investigate their co-crystallization behavior via in situ ATR-FTIR spectroscopy. Ternary-phase diagrams combined with a 1:1 solution complexation model revealed a strong complexation effect between the active pharmaceutical ingredient and both co-crystal formers. The conventional calibration strategy was applicable to the COL/L-MA system; however, an alternative calibration method was established for the COL/D-TA system to avoid undesired premature nucleation during spectral calibration. Kinetic analysis indicates that cocrystal formation governs the overall rate of the COL/L-MA process, while dissolution of D-TA constitutes the rate-determining step for COL/D-TA, which originates largely from the solubility difference between the two co-crystal formers. Intriguingly, abnormal apparent concentration rises were detected for both systems, yet they arise from fundamentally different origins: mutual solubilization accounts for the concentration surge in COL/L-MA, whereas the anomaly in the COL/D-TA system stems from complexation-induced spectral enhancement instead of real concentration variation. The proposed model successfully distinguishes these spectral artifacts, allowing credible identification of intensive nucleation events and supporting process-condition optimization. This work offers mechanistic understanding and practical guidance for co-crystallization systems containing structurally similar co-crystal formers.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"26 19","pages":"7567–7583"},"PeriodicalIF":3.6,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149093634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Holistic View of Water Environments in Molecular Crystals 分子晶体中水环境的整体观
IF 3.6 2区 化学
Crystal Growth & Design Pub Date : 2026-10-07 Epub Date: 2026-08-01 DOI: 10.1021/acs.cgd.6c00834
Henry A. Holleb, Fragkoulis Theodosiou, Pablo Martinez-Bulit, Aurora J. Cruz-Cabeza
{"title":"A Holistic View of Water Environments in Molecular Crystals","authors":"Henry A. Holleb,&nbsp;Fragkoulis Theodosiou,&nbsp;Pablo Martinez-Bulit,&nbsp;Aurora J. Cruz-Cabeza","doi":"10.1021/acs.cgd.6c00834","DOIUrl":"https://doi.org/10.1021/acs.cgd.6c00834","url":null,"abstract":"<p>Hydrates are common solid forms that can significantly affect a compound’s stability, physicochemical properties, and commercial viability. Despite their importance in pharmaceutical development, hydrate structures, their relationship to material properties, and their propensity for formation remain poorly understood. In 2003, Gillon et al. introduced a simple yet powerful framework for the structural classification of hydrates based on the hydrogen-bonding environment of crystalline water molecules. This framework categorizes water molecules according to the number of hydrogen-bond donor (D) and acceptor (A) interactions in which they participate, giving rise to eight distinct environments. In the original study, the DDA environment, where water donates two hydrogen bonds and accepts one, was reported as the most common. The statistical distribution of these environments in the Cambridge Structural Database (CSD) has since provided a useful benchmark for the qualitative assessment of hydrate structures. Here, we revisit Gillon’s water environment classification using a substantially expanded data set comprising 13,881 hydrate entries from the CSD and provide updated statistics on hydrate structures. Our analysis confirms that the DDA environment remains the most prevalent, followed by DDAA and DD, while the remaining environments occur less frequently. Extending beyond the original work, we quantify the energetics associated with each environment and demonstrate that the four-hydrogen-bond DDAA environment is energetically the most favorable, followed by environments involving three, two, and one hydrogen bonds, respectively. We further show that water-mediated intermolecular interactions contribute up to 40% of the total lattice interaction energy in the hydrate structures, highlighting the surprisingly large influence of this small solvent molecule on crystal stability. Despite its superior energetic stability, the DDAA environment is not the most frequently observed experimentally. This apparent discrepancy arises because the hydrogen-bonding capability and topology of the main component in the hydrate constrains the maximum hydrogen-bonding environment that water can achieve. Overall, this work provides a comprehensive analysis of hydrate structures and energetics across the CSD. The resulting insights offer a valuable framework for the qualitative assessment of newly discovered hydrate forms and for evaluating whether their structures conform to established crystallographic trends.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"26 19","pages":"7734–7741"},"PeriodicalIF":3.6,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149093650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Salt Versus Cocrystal: A Pragmatic First-Principles Computational Approach 盐与共晶:实用的第一性原理计算方法
IF 3.6 2区 化学
Crystal Growth & Design Pub Date : 2026-10-07 Epub Date: 2026-09-22 DOI: 10.1021/acs.cgd.6c01006
Aerial N. Bridgers-Anguiano, Gregory J. O. Beran
{"title":"Salt Versus Cocrystal: A Pragmatic First-Principles Computational Approach","authors":"Aerial N. Bridgers-Anguiano,&nbsp;Gregory J. O. Beran","doi":"10.1021/acs.cgd.6c01006","DOIUrl":"https://doi.org/10.1021/acs.cgd.6c01006","url":null,"abstract":"<p>Distinguishing the salt versus cocrystal character in acid-base multi-component crystals is pharmaceutically important and can be challenging for both theory and experiment. On the theory side, commonly-used generalized gradient approximation (GGA) functionals in periodic density functional theory (DFT) artificially stabilize salt forms, sometimes even erroneously transferring the acidic proton from the acid to the base. The inclusion of exact exchange in hybrid density functionals reduces the problem. However, proton-transfer energies can be very sensitive to the specific fraction of exact exchange included and the optimal fraction is not always readily apparent. Here, a pragmatic approach which combines periodic GGA or hybrid DFT with local corrections computed on the acid-base pair at a higher level of theory is shown to predict the correct salt, cocrystal, or intermediate behavior for ten different acid-base multi-component crystals. This approach greatly reduces the sensitivity of the proton transfer energies to the underlying periodic DFT functional, and the correction increases the overall computational costs only marginally. On the other hand, it has limitations when applied to crystals where the acid-base pair is not uniquely defined.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"26 19","pages":"7858–7869"},"PeriodicalIF":3.6,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149093621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MOCVD Growth of (011) β-Ga2O3 Films: Defect Control and Device Implication (011) β-Ga2O3薄膜的MOCVD生长:缺陷控制及器件意义
IF 3.6 2区 化学
Crystal Growth & Design Pub Date : 2026-10-07 Epub Date: 2026-09-18 DOI: 10.1021/acs.cgd.6c00857
Md Mosarof Hossain Sarkar, Dong Su Yu, Jiawei Liu, Yuki Ueda, Chia-Hung Lin, Kohei Sasaki, Uttam Singisetti, Hongping Zhao
{"title":"MOCVD Growth of (011) β-Ga2O3 Films: Defect Control and Device Implication","authors":"Md Mosarof Hossain Sarkar,&nbsp;Dong Su Yu,&nbsp;Jiawei Liu,&nbsp;Yuki Ueda,&nbsp;Chia-Hung Lin,&nbsp;Kohei Sasaki,&nbsp;Uttam Singisetti,&nbsp;Hongping Zhao","doi":"10.1021/acs.cgd.6c00857","DOIUrl":"https://doi.org/10.1021/acs.cgd.6c00857","url":null,"abstract":"<p>β-Ga<sub>2</sub>O<sub>3</sub> is a promising ultrawide-bandgap semiconductor for high-power electronics; however, the realization of thick, low-defect drift layers at high growth rates remains challenging. In this work, metalorganic chemical vapor deposition (MOCVD) growth of (011) β-Ga<sub>2</sub>O<sub>3</sub> drift layers on (011) β-Ga<sub>2</sub>O<sub>3</sub> substrates is optimized using a far-injection showerhead reactor with trimethylgallium (TMGa) and O<sub>2</sub> precursors. The effects of chemical pre-treatment, in situ oxygen annealing, wafer carrier rotation, and pulse-flow (PF) β-Ga<sub>2</sub>O<sub>3</sub> interlayers are systematically investigated to correlate growth conditions with defect density. Chemical treatment B [18% HCl (10 min) + deionized (DI) water (10 min) + 49% HF (30 min)], combined with 1 h of in situ annealing at 900 °C, minimizes defect density under the selected growth conditions. Incorporation of a single PF1 interlayer (∼30 nm thick) further suppresses defect formation, reducing the defect density by more than one order of magnitude. Atomic force microscopy (AFM) reveals sub-nanometer root mean square (RMS) roughness and step-flow morphology for ∼11 μm thick films. High-resolution X-ray diffraction (XRD) rocking curves confirm the preserved crystalline quality. Field-plated Schottky barrier diodes (SBDs) fabricated on optimized films exhibit excellent forward conduction, low reverse leakage, and improved breakdown performance, highlighting the importance of defect control for high-performance vertical power devices.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"26 19","pages":"7762–7769"},"PeriodicalIF":3.6,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Alkyl Chain Length on Anthracene-Thiazolidinedione Molecular Crystal Motor Dynamics 烷基链长度对蒽-噻唑烷二酮分子晶体动力学的影响
IF 3.6 2区 化学
Crystal Growth & Design Pub Date : 2026-10-07 Epub Date: 2026-09-22 DOI: 10.1021/acs.cgd.6c00836
Kevin Lam, Veronica Carta, Mohammed Almtiri, Ibraheem Bushnak, Imadul Islam, Guanhong Bu, Phillip Farias, Emma Rova Danelius, Rabih O. Al-Kaysi, Christopher J. Bardeen
{"title":"Effect of Alkyl Chain Length on Anthracene-Thiazolidinedione Molecular Crystal Motor Dynamics","authors":"Kevin Lam,&nbsp;Veronica Carta,&nbsp;Mohammed Almtiri,&nbsp;Ibraheem Bushnak,&nbsp;Imadul Islam,&nbsp;Guanhong Bu,&nbsp;Phillip Farias,&nbsp;Emma Rova Danelius,&nbsp;Rabih O. Al-Kaysi,&nbsp;Christopher J. Bardeen","doi":"10.1021/acs.cgd.6c00836","DOIUrl":"https://doi.org/10.1021/acs.cgd.6c00836","url":null,"abstract":"<p>In a previous paper (<em>J. Am. Chem. Soc.</em> 2024, <strong>146</strong>, 18836-18840), crystal microwires composed of (<em>Z</em>)-5-(anthracen-9-ylmethylene)-3-butylthiazolidine-2,4-dione (<strong>C4-ATD</strong>) were shown to undergo sustained oscillatory motion under constant 405 nm or solar illumination. In order to determine whether this oscillatory behavior can be generalized, the length <em>n</em> of the alkyl chain attached to the nitrogen of the thiazolidine-2,4-dione headgroup was varied from <em>n</em> = 0 to <em>n</em> = 8. Changing the alkyl chain length had little effect on the molecular properties, as measured by the molecules’ absorption spectra and <em>Z</em>→<em>E</em> reactivities in solution. Density functional calculations confirmed the electronic inertness of the alkyl sidechain. But when this family of molecules was crystallized, the length of the alkyl chain strongly impacted both the formation of reactive head-to-head versus nonreactive head-to-tail polymorphs and the crystal growth modes. <em>n</em> ≤ 5 derivatives all supported a head-to-head polymorph that enabled the <em>Z</em><span><span></span><math><mo>↔</mo></math></span><em>E</em> photoisomerization while growing in different morphologies, ranging from dendritic shapes to long, thin wires. Only the latter shape was suited for observing photomechanical oscillations, and we identified two new members of the <strong>ATD</strong> family (<em>n</em> = 0 and <em>n</em> = 2) that support robust oscillatory dynamics similar to those seen for the <em>n</em> = 4 derivative. The results illustrate how small changes in the molecular structure can change the crystal packing and growth kinetics that ultimately determine whether a molecular crystal exhibits photo-induced motor-like behavior.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"26 19","pages":"7742–7751"},"PeriodicalIF":3.6,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ti3C2Tx-Supported Polyoxometalate@Cu-BTC Composites for Electrocatalytic Nitrate-to-Ammonia Reduction ti3c2tx负载Polyoxometalate@Cu-BTC电催化硝酸还原制氨复合材料
IF 3.6 2区 化学
Crystal Growth & Design Pub Date : 2026-10-07 Epub Date: 2026-09-22 DOI: 10.1021/acs.cgd.6c00445
Yufang Wang, Xinming Wang, Zhen Guo, Hui Luo, Xinkexuan Wen, Liqing Li, Jiarui Feng, Haijun Pang, Liang Li, Huiyuan Ma, Changwei Liu
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