Crystal Growth & Design最新文献

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Heteroradical Salts Based on Paramagnetic Derivatives of Difurazanopyrazine and N-Alkylpyridinium Nitronyl Nitroxides 基于二呋喃并吡嗪顺磁衍生物和 N-烷基吡啶硝基氮氧化物的杂多羰基盐
IF 3.2 2区 化学
Crystal Growth & Design Pub Date : 2024-11-06 DOI: 10.1021/acs.cgd.4c0116710.1021/acs.cgd.4c01167
Sergey V. Fokin, Svyatoslav E. Tolstikov, Vitaly A. Morozov, Kristina A. Smirnova, Artem S. Bogomyakov and Galina V. Romanenko*, 
{"title":"Heteroradical Salts Based on Paramagnetic Derivatives of Difurazanopyrazine and N-Alkylpyridinium Nitronyl Nitroxides","authors":"Sergey V. Fokin,&nbsp;Svyatoslav E. Tolstikov,&nbsp;Vitaly A. Morozov,&nbsp;Kristina A. Smirnova,&nbsp;Artem S. Bogomyakov and Galina V. Romanenko*,&nbsp;","doi":"10.1021/acs.cgd.4c0116710.1021/acs.cgd.4c01167","DOIUrl":"https://doi.org/10.1021/acs.cgd.4c01167https://doi.org/10.1021/acs.cgd.4c01167","url":null,"abstract":"<p >The effective approach to the synthesis of heteroradical organic salts based on the paramagnetic difurazanopyrazine derivative and pyridinium-substituted nitronyl nitroxides has been proposed. It was demonstrated that the use of [NN<sup>p/m</sup>R]I iodides as a cation-radical source in the reaction with NaL(H<sub>2</sub>O)<sub>3</sub> (where L is the anion-radical of bis(1,2,5-oxadiazolo)[3,4-b:3′,4′-e]pyrazine) results in reducing L and the formation of solid solutions [NN<sup>p</sup>Me](L)<i><sub>x</sub></i>(HL)<sub>1–<i>x</i></sub>·H<sub>2</sub>O containing both the paramagnetic anion L and its reduced form anion HL. It was found that the use of [NN<sup>p/m</sup>R]NO<sub>3</sub> nitrates allows to avoid the reduction of L, and heteroradical salts [NN<sup>p/m</sup>R]L can be easily obtained. A single crystal XRD study showed that the solid phases of [NN<sup>p/m</sup>R]L salts form crystals formed by quartets of anions and cations {NN<sup>p/m</sup>R···L···L···NN<sup>p/m</sup>R}. Within the quartets, the distances between the anion-radical planes of L are ∼3.3 Å, which ensures the presence of antiferromagnetic exchange interactions between them and determines the magnetic properties, in general. It was found that in the [NN<sup>m</sup>Me]L·H<sub>2</sub>O structure, alternating cationic and anionic radicals are ferromagnetically coupled and form magnetic chains, which are linked into layers by O<sub>H2O</sub>···N<sub>L</sub> hydrogen bonds. The [NN<sup>p/m</sup>R]L heteroradical salts represent a new type of paramagnet based on organic fragments with fixed charge and spin states.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"24 22","pages":"9682–9691 9682–9691"},"PeriodicalIF":3.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671130","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
Local Droplet Etching with Indium Droplets on InP(100) by Metal–Organic Vapor Phase Epitaxy 通过金属有机气相外延技术在 InP(100)上实现铟液滴的局部液滴蚀刻
IF 3.2 2区 化学
Crystal Growth & Design Pub Date : 2024-11-06 DOI: 10.1021/acs.cgd.4c0109710.1021/acs.cgd.4c01097
Elisa Maddalena Sala*, Young In Na and Jon Heffernan, 
{"title":"Local Droplet Etching with Indium Droplets on InP(100) by Metal–Organic Vapor Phase Epitaxy","authors":"Elisa Maddalena Sala*,&nbsp;Young In Na and Jon Heffernan,&nbsp;","doi":"10.1021/acs.cgd.4c0109710.1021/acs.cgd.4c01097","DOIUrl":"https://doi.org/10.1021/acs.cgd.4c01097https://doi.org/10.1021/acs.cgd.4c01097","url":null,"abstract":"<p >The local droplet etching (LDE) by using indium droplets on bare InP(100) surfaces is demonstrated in a metal–organic vapor phase epitaxy (MOVPE) environment for the first time. The role of an arsenic flow applied to self-assembled metallic indium droplets is systematically studied. Increasing the arsenic supply leads to the formation of ring-like nanostructures and nanoholes. The results are analyzed with reference to LDE in a molecular beam epitaxy environment, where such a technique is well established, particularly for arsenide-based III–V semiconductors, and where only one group-V material is involved. Here, As–P exchange reactions at droplet sites are identified as the drivers for the formation of nanoholes. Such nanoholes can serve as nucleation sites for subsequent fabrication of highly symmetric QDs by nanohole-infilling or as a means for in situ surface nanopatterning. LDE on InP by MOVPE can thus be considered as a promising approach for the cost-effective fabrication of novel quantum emitters at the telecom C-band.</p><p >As−P exchange reactions at droplet sites are identified as the drivers for the formation of nanoholes. Such nanoholes can serve as nucleation sites for subsequent fabrication of highly symmetric QDs by nanohole-infilling or as a means for in situ surface nanopatterning. LDE on InP by MOVPE can thus be considered as a promising approach for the cost-effective fabrication of novel quantum emitters at the telecom C-band.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"24 22","pages":"9571–9580 9571–9580"},"PeriodicalIF":3.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.cgd.4c01097","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Local Droplet Etching with Indium Droplets on InP(100) by Metal-Organic Vapor Phase Epitaxy. 利用金属有机气相外延技术在 InP(100)上进行局部液滴蚀刻。
IF 3.2 2区 化学
Crystal Growth & Design Pub Date : 2024-11-06 eCollection Date: 2024-11-20 DOI: 10.1021/acs.cgd.4c01097
Elisa Maddalena Sala, Young In Na, Jon Heffernan
{"title":"Local Droplet Etching with Indium Droplets on InP(100) by Metal-Organic Vapor Phase Epitaxy.","authors":"Elisa Maddalena Sala, Young In Na, Jon Heffernan","doi":"10.1021/acs.cgd.4c01097","DOIUrl":"10.1021/acs.cgd.4c01097","url":null,"abstract":"<p><p>The local droplet etching (LDE) by using indium droplets on bare InP(100) surfaces is demonstrated in a metal-organic vapor phase epitaxy (MOVPE) environment for the first time. The role of an arsenic flow applied to self-assembled metallic indium droplets is systematically studied. Increasing the arsenic supply leads to the formation of ring-like nanostructures and nanoholes. The results are analyzed with reference to LDE in a molecular beam epitaxy environment, where such a technique is well established, particularly for arsenide-based III-V semiconductors, and where only one group-V material is involved. Here, As-P exchange reactions at droplet sites are identified as the drivers for the formation of nanoholes. Such nanoholes can serve as nucleation sites for subsequent fabrication of highly symmetric QDs by nanohole-infilling or as a means for in situ surface nanopatterning. LDE on InP by MOVPE can thus be considered as a promising approach for the cost-effective fabrication of novel quantum emitters at the telecom C-band.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"24 22","pages":"9571-9580"},"PeriodicalIF":3.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11583200/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spontaneous Deracemization of the DMY Racemic Compound with Two Stereocenters through a Stepwise Process of Cocrystallization-Induced Resolution and Solution Racemization 通过共晶诱导解析和溶液消旋化的分步过程,自发衍生出具有两个立体中心的 DMY 外消旋化合物
IF 3.2 2区 化学
Crystal Growth & Design Pub Date : 2024-11-06 DOI: 10.1021/acs.cgd.4c0114410.1021/acs.cgd.4c01144
Yujiang Xie, Shubo Liu, Jie Sun, Weiwei Tang* and Junbo Gong*, 
{"title":"Spontaneous Deracemization of the DMY Racemic Compound with Two Stereocenters through a Stepwise Process of Cocrystallization-Induced Resolution and Solution Racemization","authors":"Yujiang Xie,&nbsp;Shubo Liu,&nbsp;Jie Sun,&nbsp;Weiwei Tang* and Junbo Gong*,&nbsp;","doi":"10.1021/acs.cgd.4c0114410.1021/acs.cgd.4c01144","DOIUrl":"https://doi.org/10.1021/acs.cgd.4c01144https://doi.org/10.1021/acs.cgd.4c01144","url":null,"abstract":"<p >Processes that allow access to enantiomerically pure drugs are of the utmost importance to maximize pharmacological activity while minimizing the side effects. This work develops a novel diastereomeric cocrystallization-induced spontaneous deracemization process for a racemic compound, dihydromyricetin (DMY), which contains two stereocenters. A pair of diastereomeric cocrystals, (2<i>R</i>,3<i>R</i>-DMY)<sub>2</sub>:<i>R</i>-<i>N</i>-benzyl-1-phenylethylamine and (2<i>R</i>,3<i>R</i>-DMY)<sub>2</sub>:<i>S</i>-<i>N</i>-benzyl-1-phenylethylamine, the latter of which is equivalent to (2<i>S</i>,3<i>S</i>-DMY)<sub>2</sub>:<i>R</i>-<i>N</i>-benzyl-1-phenylethylamine, was discovered via a complete screening of 12 chiral coformers using both slurry and liquid-assisted grinding methods. Crystal structure of these cocrystals was determined using single-crystal X-ray diffraction and reported for the first time. Enantioseparation of <i>rac</i>-DMY by virtue of diastereomeric cocrystals was designed and optimized through slurry and cooling crystallization methods, resulting in a product of 81% enantiomeric purity with a yield of only 31%. Further, the racemization process of DMY enantiomers with various influence factors was examined, and the optimal racemization condition that achieves simultaneous racemization of the two stereocenters was determined. Finally, a stepwise cocrystallization-induced deracemization process of <i>rac</i>-DMY that combines chiral resolution by cocrystallization and racemization of recycling mother liquor was developed, producing an enantiomeric purity of 97.5% and a maximal yield of 68%.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"24 22","pages":"9649–9659 9649–9659"},"PeriodicalIF":3.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671686","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
Streamlined In Situ X-ray Crystallography of Gas Sorption State as Realized through the De Novo Development of a Novel Crystal Mount 通过新开发的新型晶体支架简化气体吸附状态的原位 X 射线晶体学研究
IF 3.2 2区 化学
Crystal Growth & Design Pub Date : 2024-11-06 DOI: 10.1021/acs.cgd.4c0087110.1021/acs.cgd.4c00871
Kazuaki Yamanaka, Masayuki Moritake, Hiroki Takahashi and Hirohito Tsue*, 
{"title":"Streamlined In Situ X-ray Crystallography of Gas Sorption State as Realized through the De Novo Development of a Novel Crystal Mount","authors":"Kazuaki Yamanaka,&nbsp;Masayuki Moritake,&nbsp;Hiroki Takahashi and Hirohito Tsue*,&nbsp;","doi":"10.1021/acs.cgd.4c0087110.1021/acs.cgd.4c00871","DOIUrl":"https://doi.org/10.1021/acs.cgd.4c00871https://doi.org/10.1021/acs.cgd.4c00871","url":null,"abstract":"<p >In situ X-ray crystallography of gas sorption states is a powerful approach to gain profound insights into the nature of gas sorption phenomena, and its implementation is quite skillful. To broaden the range of implementation choices and also to further facilitate and generalize in situ X-ray crystallographic analysis under a gas atmosphere, we have carried out the de novo design and development of a novel crystal mount (NCM), which encompasses the following four features: (1) the NCM is designed to be as compact as possible in order not to interfere with the incident X-ray beam of a laboratory diffractometer. (2) The inside of a capillary fixed to the NCM is easily evacuated by a vacuum pump. (3) A target gas is also easily introduced into the capillary containing a single crystal. (4) Gas pressure is freely adjustable up to 3.9 atm. As a case study, the NCM was subjected to in situ X-ray crystallography under a CO<sub>2</sub> atmosphere, and we fully succeeded in analyzing the CO<sub>2</sub> sorption state of a dipeptide-based molecular crystal. The present de novo development of an NCM with versatility and ease of handling would open new opportunities for in situ X-ray crystallography.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"24 22","pages":"9433–9439 9433–9439"},"PeriodicalIF":3.2,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671414","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
Photoresponsive Halogen-Bonded Complexes of 1,3,5-Trifluoro-2,4,6-triiodobenzene and Alkoxyazopyridine Derivatives Based on Py-N···I Interactions: Synthesis, Structural, and Theoretical Insights 基于 Py-N-I 相互作用的 1,3,5-三氟-2,4,6-三碘苯和烷氧基氮吡啶衍生物的光致发光卤键配合物:合成、结构和理论见解
IF 3.2 2区 化学
Crystal Growth & Design Pub Date : 2024-11-05 DOI: 10.1021/acs.cgd.4c0078110.1021/acs.cgd.4c00781
Jyoti Swarup Thakur, Omkar Dash, Kapil S. Ingle, Komal B. Lahoti, Athul Sudheendranath, Nagesh A. Bhale, Amol G. Dikundwar and Susanta K. Nayak*, 
{"title":"Photoresponsive Halogen-Bonded Complexes of 1,3,5-Trifluoro-2,4,6-triiodobenzene and Alkoxyazopyridine Derivatives Based on Py-N···I Interactions: Synthesis, Structural, and Theoretical Insights","authors":"Jyoti Swarup Thakur,&nbsp;Omkar Dash,&nbsp;Kapil S. Ingle,&nbsp;Komal B. Lahoti,&nbsp;Athul Sudheendranath,&nbsp;Nagesh A. Bhale,&nbsp;Amol G. Dikundwar and Susanta K. Nayak*,&nbsp;","doi":"10.1021/acs.cgd.4c0078110.1021/acs.cgd.4c00781","DOIUrl":"https://doi.org/10.1021/acs.cgd.4c00781https://doi.org/10.1021/acs.cgd.4c00781","url":null,"abstract":"<p >A series of (<i>E</i>)-4-((4-alkoxyphenyl)diazenyl)pyridine (<b>AZ-<i>n</i></b>) derivatives were synthesized with varying alkoxy spacers (<i>n</i> = 8, 9, and 10), and their halogen-bonded complexes were obtained with 1,3,5-trifluoro-2,4,6-triiodobenzene in different stoichiometric ratios, which were further characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), single-crystal X-ray diffraction (SC-XRD), and powder X-ray diffraction (P-XRD) techniques. The structural analysis revealed the presence of Py-N···I halogen bond (XB) interactions in the complexes, resulting in a bent-shaped architecture rather than a star-shaped one. Hirshfeld surface analysis revealed the contribution of XB along different intermolecular interactions in the crystal packing. Computational analyses such as noncovalent index (NCI), quantum theory of atoms in molecules (QTAIM), electron localization function (ELF), and natural bond orbital (NBO) were carried out to understand the nature, strength, and electronic characteristics of XBs in these complexes. Further, these XB complexes show excellent photoresponsive behavior upon UV illumination, introducing a new range of supramolecular photoresponsive materials self-assembled by halogen bonding, thereby broadening the scope of potential applications within their respective systems.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"24 22","pages":"9391–9402 9391–9402"},"PeriodicalIF":3.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671351","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
Lattice Vibrational Anisotropy in a Potentially Porous Diiron Paddle-Wheel Coordination Polymer 潜在多孔二铁桨轮配位聚合物的晶格振动各向异性
IF 3.2 2区 化学
Crystal Growth & Design Pub Date : 2024-11-05 DOI: 10.1021/acs.cgd.4c0117010.1021/acs.cgd.4c01170
Aphiwe Sicwebu, Lonwabo Ngodwana*, Giovanni R. Hearne and Banele Vatsha*, 
{"title":"Lattice Vibrational Anisotropy in a Potentially Porous Diiron Paddle-Wheel Coordination Polymer","authors":"Aphiwe Sicwebu,&nbsp;Lonwabo Ngodwana*,&nbsp;Giovanni R. Hearne and Banele Vatsha*,&nbsp;","doi":"10.1021/acs.cgd.4c0117010.1021/acs.cgd.4c01170","DOIUrl":"https://doi.org/10.1021/acs.cgd.4c01170https://doi.org/10.1021/acs.cgd.4c01170","url":null,"abstract":"<p >A new three-dimensional potentially porous coordination polymer {[Fe<sub>2</sub>(bdc)<sub>4</sub>(Me<sub>4</sub>bpz)<sub>2</sub>]·solv}[1], where bdc = terephthalic acid and Me<sub>4</sub>bpz = 3,3′,5,5′-tetramethyl-4,4′-bipyrazole, was successfully synthesized. Single-crystal X-ray structural elucidation confirmed that [1] comprises 2-fold interpenetrated nets with accessible pores for solvent exchange. Variable-temperature Mössbauer spectroscopy revealed a temperature dependence of relative line intensities of the quadrupole doublet spectral profile associated with the iron sites in the paddle-wheel structure. As the temperature decreased, the asymmetry in line intensities of the quadrupole doublet diminished. This is attributable to vibrational anisotropy (Goldanskii-Karyagin effect), which may be important for pore dynamics and sorption characteristics.</p><p >A new three-dimensional structure comprising diiron paddlewheel subunits and two-fold interpenetrated nets with potential porosity is reported. Probing aspects of the diiron mean square displacements in the range 300−5 K reveals lattice vibrational anisotropy, with likely implications for pore dynamics and sorption characteristics.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"24 22","pages":"9324–9330 9324–9330"},"PeriodicalIF":3.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.cgd.4c01170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Growth of High-Purity CsPbBr3 Crystals for Enhanced Gamma-Ray Detection 生长高纯度 CsPbBr3 晶体以增强伽马射线探测能力
IF 3.2 2区 化学
Crystal Growth & Design Pub Date : 2024-11-05 DOI: 10.1021/acs.cgd.4c0110910.1021/acs.cgd.4c01109
Duck Young Chung, Wenwen Lin, Mustafa Unal, Quoc Vuong Phan, Indra R. Pandey, Richard Vitt, Yihui He and Mercouri G. Kanatzidis*, 
{"title":"Growth of High-Purity CsPbBr3 Crystals for Enhanced Gamma-Ray Detection","authors":"Duck Young Chung,&nbsp;Wenwen Lin,&nbsp;Mustafa Unal,&nbsp;Quoc Vuong Phan,&nbsp;Indra R. Pandey,&nbsp;Richard Vitt,&nbsp;Yihui He and Mercouri G. Kanatzidis*,&nbsp;","doi":"10.1021/acs.cgd.4c0110910.1021/acs.cgd.4c01109","DOIUrl":"https://doi.org/10.1021/acs.cgd.4c01109https://doi.org/10.1021/acs.cgd.4c01109","url":null,"abstract":"<p >High-quality CsPbBr<sub>3</sub> crystals hold significant potential for gamma-ray detection due to their remarkable optoelectronic properties. This study details an optimized production process using the Bridgman method to achieve highly pure CsPbBr<sub>3</sub> crystals. By implementing rigorous synthesis and purification techniques, we successfully reduced the total impurity levels to 9 ppm, as confirmed by glow discharge mass spectroscopy (GDMS). The resulting CsPbBr<sub>3</sub> crystals demonstrate exceptional performance, including high transparency, intense photoemission, and prolonged photoluminescence decay times. These properties facilitate superior gamma-ray detection with an energy resolution of 1.4% for the <sup>137</sup>Cs 662 keV gamma-rays, comparable to commercial Cd<sub>1–<i>x</i></sub>Zn<sub><i>x</i></sub>Te (CZT) detectors. Our findings underscore the critical relationship between material purity and detector performance, highlighting the potential of CsPbBr<sub>3</sub> as a cost-effective alternative in radiation detection applications. Further studies on defect origins and electronic states are necessary to fully leverage the capabilities of CsPbBr<sub>3</sub> crystals in practical high-energy radiation detection systems.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"24 22","pages":"9590–9600 9590–9600"},"PeriodicalIF":3.2,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671597","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
Formation and Markedly Enhanced Optical Properties of Large-Area Nanoporous InGaN-Based LEDs with Nanoporous GaN Distributed Bragg Mirrors 带有纳米多孔 GaN 分布布拉格反射镜的大面积纳米多孔 InGaN 基发光二极管的形成及其明显增强的光学特性
IF 3.2 2区 化学
Crystal Growth & Design Pub Date : 2024-11-04 DOI: 10.1021/acs.cgd.4c0105110.1021/acs.cgd.4c01051
Tiantian Luo, Dezhong Cao*, Feifei Wang, He Wang, Xiaodong Yan, Wangxin Gao, Mengqi Tian, Yuxuan Diwu, Zhengquan Guo, Qinglong Fang, Ningning Feng, Li Ma, Sen Wang, Dingze Lu, Song Feng, Xiaohua Ma and Yue Hao, 
{"title":"Formation and Markedly Enhanced Optical Properties of Large-Area Nanoporous InGaN-Based LEDs with Nanoporous GaN Distributed Bragg Mirrors","authors":"Tiantian Luo,&nbsp;Dezhong Cao*,&nbsp;Feifei Wang,&nbsp;He Wang,&nbsp;Xiaodong Yan,&nbsp;Wangxin Gao,&nbsp;Mengqi Tian,&nbsp;Yuxuan Diwu,&nbsp;Zhengquan Guo,&nbsp;Qinglong Fang,&nbsp;Ningning Feng,&nbsp;Li Ma,&nbsp;Sen Wang,&nbsp;Dingze Lu,&nbsp;Song Feng,&nbsp;Xiaohua Ma and Yue Hao,&nbsp;","doi":"10.1021/acs.cgd.4c0105110.1021/acs.cgd.4c01051","DOIUrl":"https://doi.org/10.1021/acs.cgd.4c01051https://doi.org/10.1021/acs.cgd.4c01051","url":null,"abstract":"<p >Compared with nitric acid solution, oxalic acid solution has the advantages of safety, environmental protection, and a controllable etching rate. Large-area (20.3 cm<sup>2</sup>) nanoporous InGaN-based LEDs with nanoporous GaN distributed Bragg mirrors (NP LEDs) are prepared by a combination of doping, wet etching in oxalic acid solution, and metal–organic chemical vapor deposition (MOCVD). Compared with the epitaxial growth of LEDs (EG LEDs), NP LEDs show a decreased surface roughness, an enhanced luminescence intensity, and a blue shift of the luminescence peak. The enhancement of luminescence intensity can be attributed to the enhancement of internal quantum efficiency related to the increased crystal quality of MQWs, as well as increasing light extraction efficiency caused by the light-guiding effect of nanopore arrays in MQWs and the light reflection effect of nanoporous GaN distributed Bragg mirrors. The blue shift phenomenon is due to the stress relaxation of MQWs and the decreased In content.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"24 22","pages":"9556–9563 9556–9563"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671510","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
Formation of Stable Zinc-Rich Amorphous Calcium Phosphate 形成稳定的富锌无定形磷酸钙
IF 3.2 2区 化学
Crystal Growth & Design Pub Date : 2024-11-04 DOI: 10.1021/acs.cgd.4c0094110.1021/acs.cgd.4c00941
Jia-hua Liu, Haidong Bian, Yibo Zhang, Yunchen Long, Chuan Li, Rong Zhang, Zhengyi Mao, Haikun Wu, Bo Li, Chunyi Zhi, Jian Lu* and Yang Yang Li*, 
{"title":"Formation of Stable Zinc-Rich Amorphous Calcium Phosphate","authors":"Jia-hua Liu,&nbsp;Haidong Bian,&nbsp;Yibo Zhang,&nbsp;Yunchen Long,&nbsp;Chuan Li,&nbsp;Rong Zhang,&nbsp;Zhengyi Mao,&nbsp;Haikun Wu,&nbsp;Bo Li,&nbsp;Chunyi Zhi,&nbsp;Jian Lu* and Yang Yang Li*,&nbsp;","doi":"10.1021/acs.cgd.4c0094110.1021/acs.cgd.4c00941","DOIUrl":"https://doi.org/10.1021/acs.cgd.4c00941https://doi.org/10.1021/acs.cgd.4c00941","url":null,"abstract":"<p >Metal ion-rich amorphous calcium phosphate (ACP) is an essential mineral component in biogenic hard tissues, such as bones and teeth. However, the formation mechanism of ion-doped ACP and the role of metal ions in this process remain elusive. Herein, taking Zn as an example, we develop a series of Zn-substituted calcium phosphate materials that serve as models for investigating the formation process of Zn-ACP. It is found that entirely pure Zn-ACP can be successfully achieved when the precursor Zn/Ca ratio is maintained between 0.1 and 0.2. The resulting Zn-ACP nanoparticles exhibit a homogeneous distribution of Zn at the nanoscale, excellent cytocompatibility, and exceptionally high amorphous stability in aqueous media, including water and simulated body fluid. Furthermore, we fabricate monolithic Zn-ACP bioceramics through the application of pressure, resulting in remarkable hardness (1.7 GPa) and modulus (25.5 GPa) that exceed those of human bones. This work presents a novel approach to producing Zn-ACP monoliths and advances our understanding of the biomineralization processes involving Zn and ACP, thus opening potential applications in biomedicine.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"24 22","pages":"9492–9501 9492–9501"},"PeriodicalIF":3.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671592","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}
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