1
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Ruiz-Agudo C, Cölfen H. Exploring the Potential of Nonclassical Crystallization Pathways to Advance Cementitious Materials. Chem Rev 2024. [PMID: 38874016 DOI: 10.1021/acs.chemrev.3c00259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Understanding the crystallization of cement-binding phases, from basic units to macroscopic structures, can enhance cement performance, reduce clinker use, and lower CO2 emissions in the construction sector. This review examines the crystallization pathways of C-S-H (the main phase in PC cement) and other alternative binding phases, particularly as cement formulations evolve toward increasing SCMs and alternative binders as clinker replacements. We adopt a nonclassical crystallization perspective, which recognizes the existence of critical intermediate steps between ions in solution and the final crystalline phases, such as solute ion associates, dense liquid phases, amorphous intermediates, and nanoparticles. These multistep pathways uncover innovative strategies for controlling the crystallization of binding phases through additive use, potentially leading to highly optimized cement matrices. An outstanding example of additive-controlled crystallization in cementitious materials is the synthetically produced mesocrystalline C-S-H, renowned for its remarkable flexural strength. This highly ordered microstructure, which intercalates soft matter between inorganic and brittle C-S-H, was obtained by controlling the assembly of individual C-S-H subunits. While large-scale production of cementitious materials by a bottom-up self-assembly method is not yet feasible, the fundamental insights into the crystallization mechanism of cement binding phases presented here provide a foundation for developing advanced cement-based materials.
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Affiliation(s)
- Cristina Ruiz-Agudo
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstr. 10, 78457 Konstanz, Germany
| | - Helmut Cölfen
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstr. 10, 78457 Konstanz, Germany
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2
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Sun X, Wang S, Wang Z, Shen Q, Chen X, Chen Z, Luan C, Yu K. Lower-Temperature Nucleation and Growth of Colloidal CdTe Quantum Dots Enabled by Prenucleation Clusters with Cd-Te Bond Conservation. J Am Chem Soc 2024; 146:15587-15595. [PMID: 38783573 DOI: 10.1021/jacs.4c04593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
The reason why heating is required remains elusive for the traditional synthesis of colloidal semiconductor quantum dots (QDs) of II-VI metal chalcogenide (ME). Using CdTe as a model system, we show that the formation of Cd-Te covalent bonds with individual Cd- and Te-containing compounds can be decoupled from the nucleation and growth of CdTe QDs. Prepared at an elevated temperature, a prenucleation-stage sample contains clusters that are the precursor compound (PC) of magic-size clusters (MSCs); the Cd-Te bond formation occurs at temperatures higher than 120 °C in the reaction. Afterward, the PC-to-QD transformation appears via monomers at lower temperatures in dispersion. Our findings suggest that the number of Cd-Te bonds broken in the PC reactant is similar to that of Cd-Te bonds formed in the QD product. For the traditional synthesis of ME QDs, heating is responsible for the M-E bond formation rather than for nucleation.
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Affiliation(s)
- Xilian Sun
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Shasha Wang
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Zhe Wang
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Qiu Shen
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Xiaoqin Chen
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Zifei Chen
- ARC Centre of Excellence in Exciton Science, School of Chemistry, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Chaoran Luan
- College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Kui Yu
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, Sichuan 610065, P. R. China
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3
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Lu H, Macht M, Rosenberg R, Wiedenbeck E, Lukas M, Qi D, Maltseva D, Zahn D, Cölfen H, Bonn M. Organic Nucleation: Water Rearrangement Reveals the Pathway of Ibuprofen. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307858. [PMID: 38269485 DOI: 10.1002/smll.202307858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/31/2023] [Indexed: 01/26/2024]
Abstract
The organic nucleation of the pharmaceutical ibuprofen is investigated, as triggered by the protonation of ibuprofen sodium salt at elevated pH. The growth and aggregation of nanoscale solution species by Analytical Ultracentrifugation and Molecular Dynamics (MD) simulations is tracked. Both approaches reveal solvated molecules, oligomers, and prenucleation clusters, their size as well as their hydration at different reaction stages. By combining surface-specific vibrational spectroscopy and MD simulations, water interacting with ibuprofen at the air-water interface during nucleation is probed. The results show the structure of water changes upon ibuprofen protonation in response to the charge neutralization. Remarkably, the water structure continues to evolve despite the saturation of protonated ibuprofen at the hydrophobic interface. This further water rearrangement is associated with the formation of larger aggregates of ibuprofen molecules at a late prenucleation stage. The nucleation of ibuprofen involves ibuprofen protonation and their hydrophobic assembly. The results highlight that these processes are accompanied by substantial water reorganization. The critical role of water is possibly relevant for organic nucleation in aqueous environments in general.
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Affiliation(s)
- Hao Lu
- Department of Materials and Textile Engineering, Nanotechnology Research Institute, Jiaxing University, Jiaxing, Zhejiang Province, 314001, P. R. China
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Moritz Macht
- Lehrstuhl für Theoretische Chemie/Computer Chemie Centrum, Friedrich-Alexander Universität Erlangen-Nürnberg, Nägelsbachstraße 25, 91052, Erlangen, Germany
| | - Rose Rosenberg
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Eduard Wiedenbeck
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Max Lukas
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Daizong Qi
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Daria Maltseva
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Dirk Zahn
- Lehrstuhl für Theoretische Chemie/Computer Chemie Centrum, Friedrich-Alexander Universität Erlangen-Nürnberg, Nägelsbachstraße 25, 91052, Erlangen, Germany
| | - Helmut Cölfen
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany
| | - Mischa Bonn
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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4
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Xue J, Wang S, Wang Z, Luan C, Li Y, Chen X, Yu K. Pathway of Room-Temperature Formation of CdSeS Magic-Size Clusters from Mixtures of CdSe and CdS Samples. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402121. [PMID: 38634202 DOI: 10.1002/smll.202402121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Indexed: 04/19/2024]
Abstract
The synthetic application of prenucleation-stage samples of colloidal semiconductor quantum dots (QDs) is in its infancy. It is shown that when two prenucleation-stage samples of binary CdSe and CdS are mixed, ternary CdSeS magic-size clusters (MSCs) grow at room temperature in dispersion. As the amount of the CdS sample increases, the optical absorption of the CdSeS MSCs blueshifts from ≈380 to ≈360 nm. It is proposed that the cluster in the CdSe sample reacts with the CdS monomer from the CdS sample. The monomer substitution reaction of CdSe by CdS can proceed continuously; thus, CdSeS MSCs with tunable compositions are obtained. The present study provides compelling evidence that clusters formed in the prenucleation stage of QDs. The clusters are precursor compounds (PCs) of MSCs, transforming at room temperature with the thermoneutrality principle of isodesmic reactions. The nucleation and growth of QDs follows a multi-step non-classical instead of one-step classical nucleation model.
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Affiliation(s)
- Jiawei Xue
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Shasha Wang
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Zhe Wang
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Chaoran Luan
- College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Yang Li
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Xiaoqin Chen
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Kui Yu
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
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5
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Yang Y, Xiong Q, Wu J, Tu Y, Sun T, Li G, Liu X, Wang X, Du Y, Deng C, Tan L, Wei Y, Lin Y, Huang Y, Huang M, Sun W, Fan L, Xie Y, Lin J, Lan Z, Stacchinii V, Musiienko A, Hu Q, Gao P, Abate A, Nazeeruddin MK. Poly(3-hexylthiophene)/perovskite Heterointerface by Spinodal Decomposition Enabling Efficient and Stable Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2310800. [PMID: 38019266 DOI: 10.1002/adma.202310800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/22/2023] [Indexed: 11/30/2023]
Abstract
The best research-cell efficiency of perovskite solar cells (PSCs) is comparable with that of mature silicon solar cells (SSCs); However, the industrial development of PSCs lags far behind SSCs. PSC is a multiphase and multicomponent system, whose consequent interfacial energy loss and carrier loss seriously affect the performance and stability of devices. Here, by using spinodal decomposition, a spontaneous solid phase segregation process, in situ introduces a poly(3-hexylthiophene)/perovskite (P3HT/PVK) heterointerface with interpenetrating structure in PSCs. The P3HT/PVK heterointerface tunes the energy alignment, thereby reducing the energy loss at the interface; The P3HT/PVK interpenetrating structure bridges a transport channel, thus decreasing the carrier loss at the interface. The simultaneous mitigation of energy and carrier losses by P3HT/PVK heterointerface enables n-i-p geometry device a power conversion efficiency of 24.53% (certified 23.94%) and excellent stability. These findings demonstrate an ingenious strategy to optimize the performance of PSCs by heterointerface via Spinodal decomposition.
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Affiliation(s)
- Yuqian Yang
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
- Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, D-12489, Berlin, Germany
| | - Qiu Xiong
- Xiamen Institute Rare Earth Materials, Haixi Institutes, Chinese Academy of Science, Xiamen, 361021, P. R. China
| | - Jihuai Wu
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Yongguang Tu
- Frontiers Science Center for Flexible Electronics, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Tianxiao Sun
- Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, D-12489, Berlin, Germany
| | - Guixiang Li
- Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, D-12489, Berlin, Germany
| | - Xuping Liu
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Xiaobing Wang
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Yitian Du
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Chunyan Deng
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Lina Tan
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Yuelin Wei
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Yu Lin
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Yunfang Huang
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Miaoliang Huang
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Weihai Sun
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Leqing Fan
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Yiming Xie
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Jianming Lin
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Zhang Lan
- Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Institute of Materials Physical Chemistry, Huaqiao University, Xiamen, Fujian, 361021, P. R. China
| | - Valerio Stacchinii
- Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, D-12489, Berlin, Germany
| | - Artem Musiienko
- Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, D-12489, Berlin, Germany
| | - Qin Hu
- Univ Sci & Technol China, Sch Microelect, Hefei, Anhui, 230026, P. R. China
| | - Peng Gao
- Xiamen Institute Rare Earth Materials, Haixi Institutes, Chinese Academy of Science, Xiamen, 361021, P. R. China
| | - Antonio Abate
- Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, D-12489, Berlin, Germany
| | - Mohammad Khaja Nazeeruddin
- Institute of Chemical Sciences and Engineering, École Polytechnique Fedérale de Lausanne, Sion, Valais, CH-1951, Switzerland
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6
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Xu R, Wang Z, Yang Y, Gu C, Luan C, Wang S, Chen X, Yu K. Formation and Transformation of CdS Clusters during the Prenucleation Stage and in a Dilute Dispersion at Room Temperature. NANO LETTERS 2024; 24:1294-1302. [PMID: 38230964 DOI: 10.1021/acs.nanolett.3c04287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
The formation and transformation of colloidal semiconductor clusters remain poorly understood. With CdS as a model system, we show that, in the reaction of cadmium myristate (Cd(MA)2) and S powder in 1-octadecene (ODE), clusters form in the prenucleation stage of quantum dots (QDs). Called precursor compounds (PCs), the clusters can transform to magic-size clusters (MSCs) in reaction at a relatively high temperature (MSC-322 displaying optical absorption peaking at 322 nm) or in a dispersion at room temperature (MSC-360). When the reaction temperature is increased, PC-360 forms at 140 °C, while PC-322 and MSC-322 form at 180 °C. In a dispersion of cyclohexane and octylamine, MSC-322 transforms to MSC-360 via MSC-345. The MSC-345 to MSC-360 transformation displays continuous and discontinuous shifts in the optical absorption. The PCs and MSCs are a group of isomers. The present findings bring insight into the cluster formation and isomerization in the prenucleation stage of QDs and in a dispersion.
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Affiliation(s)
- Rongkuan Xu
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Zhe Wang
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Yusha Yang
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Cheng Gu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Chaoran Luan
- College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Shanling Wang
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Xiaoqin Chen
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Kui Yu
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, Sichuan 610065, P. R. China
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7
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Wang T, Wang Z, Wang S, Chen X, Luan C, Yu K. Thermally-Induced Isomerization of Prenucleation Clusters During the Prenucleation Stage of CdTe Quantum Dots. Angew Chem Int Ed Engl 2023; 62:e202310234. [PMID: 37581340 DOI: 10.1002/anie.202310234] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/14/2023] [Accepted: 08/14/2023] [Indexed: 08/16/2023]
Abstract
The evolution of prenucleation clusters in the prenucleation stage of colloidal semiconductor quantum dots (QDs) has remained unexplored. With CdTe as a model system, we show that substances form and isomerize prior to the nucleation and growth of QDs. Called precursor compounds (PCs), the prenucleation clusters are relatively optically transparent and can transform to absorbing magic-size clusters (MSCs). When a prenucleation-stage sample at 25, 45, or 80 °C is dispersed in a mixture of cyclohexane (CH) and octylamine (OTA) at room temperature, either MSC-371, MSC-417, or MSC-448 evolves with absorption peaking at 371, 417, or 448 nm, respectively. We propose that PC-371 forms at 25 °C, and isomerizes to PC-417 at 45 °C and to PC-448 at 80 °C. The PCs and MSCs are quasi isomers. Relatively large and small amounts of OTA favor PC-371 and PC-448 in dispersion, respectively. The present findings suggest the existence of PC-to-PC isomerization in the QD prenucleation stage.
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Affiliation(s)
- Tinghui Wang
- Engineering Research Center in Biomaterials, Sichuan University, 610065, Chengdu, Sichuan, P. R. China
| | - Zhe Wang
- Engineering Research Center in Biomaterials, Sichuan University, 610065, Chengdu, Sichuan, P. R. China
| | - Shanling Wang
- Analytical and Testing Center, Sichuan University, 610065, Chengdu, Sichuan, P. R. China
| | - Xiaoqin Chen
- Engineering Research Center in Biomaterials, Sichuan University, 610065, Chengdu, Sichuan, P. R. China
| | - Chaoran Luan
- Laboratory of Ethnopharmacology, Tissue-orientated Property of Chinese Medicine Key Laboratory of Sichuan Province, West China School of Medicine, West China Hospital, Sichuan University, 610065, Chengdu, Sichuan, P. R. China
| | - Kui Yu
- Engineering Research Center in Biomaterials, Sichuan University, 610065, Chengdu, Sichuan, P. R. China
- Institute of Atomic and Molecular Physics, Sichuan University, 610065, Chengdu, Sichuan, P. R. China
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8
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Sowoidnich T, Damidot D, Ludwig HM, Germroth J, Rosenberg R, Cölfen H. The nucleation of C-S-H via prenucleation clusters. J Chem Phys 2023; 158:114309. [PMID: 36948802 DOI: 10.1063/5.0141255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023] Open
Abstract
The nucleation and growth of calcium-silicate-hydrate (C-S-H) is of fundamental importance for the strength development and durability of the concrete. However, the nucleation process of C-S-H is still not fully understood. The present work investigates how C-S-H nucleates by analyzing the aqueous phase of hydrating tricalcium silicate (C3S) by applying inductively coupled plasma-optical emission spectroscopy as well as analytical ultracentrifugation. The results show that the C-S-H formation follows non-classical nucleation pathways associated with the formation of prenucleation clusters (PNCs) of two types. Those PNCs are detected with high accuracy and reproducibility and are two species of the 10 in total, from which the ions (with associated water molecules) are the majority of the species. The evaluation of the density and molar mass of the species shows that the PNCs are much larger than ions, but the nucleation of C-S-H starts with the formation of liquid precursor C-S-H (droplets) with low density and high water content. The growth of these C-S-H droplets is associated with a release of water molecules and a reduction in size. The study gives experimental data on the size, density, molecular mass, and shape and outlines possible aggregation processes of the detected species.
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Affiliation(s)
- T Sowoidnich
- Bauhaus-Universität Weimar, F.A. Finger-Institute for Building Materials Science, Coudraystr. 11, 99423 Weimar, Germany
| | - D Damidot
- IMT Nord Europe, Institut Mines-Télécom, University Lille, Centre for Materials and Processes Centre, F-59000 Lille, France
| | - H-M Ludwig
- Bauhaus-Universität Weimar, F.A. Finger-Institute for Building Materials Science, Coudraystr. 11, 99423 Weimar, Germany
| | - J Germroth
- University of Konstanz, Physical Chemistry, Department of Chemistry, Universitätsstraße 10, 78457 Konstanz, Germany
| | - R Rosenberg
- University of Konstanz, Physical Chemistry, Department of Chemistry, Universitätsstraße 10, 78457 Konstanz, Germany
| | - H Cölfen
- University of Konstanz, Physical Chemistry, Department of Chemistry, Universitätsstraße 10, 78457 Konstanz, Germany
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9
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Mani R, Peltonen L, Strachan CJ, Karppinen M, Louhi-Kultanen M. Nonclassical Crystallization and Core-Shell Structure Formation of Ibuprofen from Binary Solvent Solutions. CRYSTAL GROWTH & DESIGN 2023; 23:236-245. [PMID: 36624777 PMCID: PMC9817074 DOI: 10.1021/acs.cgd.2c00971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 12/09/2022] [Indexed: 06/17/2023]
Abstract
Liquid-liquidphase separation (LLPS) or dense liquid intermediates during the crystallization of pharmaceutical molecules is common; however, their role in alternative nucleation mechanisms is less understood. Herein, we report the formation of a dense liquid intermediate followed by a core-shell structure of ibuprofen crystals via nonclassical crystallization. The Raman and SAXS results of the dense phase uncover the molecular structural ordering and its role in nucleation. In addition to the dimer formation of ibuprofen, which is commonly observed in the solution phase, methyl group vibrations in the Raman spectra show intermolecular interactions similar to those in the solid phase. The SAXS data validate the cluster size differences in the supersaturated solution and dense phase. The focused-ion beam cut image shows the attachment of nanoparticles, and we proposed a possible mechanism for the transformation from the dense phase into a core-shell structure. The unstable phase or polycrystalline core and its subsequent dissolution from inside to outside or recrystallization by reversed crystal growth produces the core-shell structure. The LLPS intermediate followed by the core-shell structure and its dissolution enhancement unfold a new perspective of ibuprofen crystallization.
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Affiliation(s)
- Rajaboopathi Mani
- Department
of Chemical and Metallurgical Engineering, Aalto University, FI-00076 Aalto (Espoo), Finland
- Department
of Physics & Nanotechnology, SRM Institute
of Science & Technology, Kattankulathur 603203, Tamilnadu, India
| | - Leena Peltonen
- Drug
Research Program, Division of Pharmaceutical Chemistry and Technology, University of Helsinki, 00014 Helsinki, Finland
| | - Clare J. Strachan
- Drug
Research Program, Division of Pharmaceutical Chemistry and Technology, University of Helsinki, 00014 Helsinki, Finland
| | - Maarit Karppinen
- Department
of Chemistry and Materials Science, Aalto
University, FI-00076 Aalto (Espoo), Finland
| | - Marjatta Louhi-Kultanen
- Department
of Chemical and Metallurgical Engineering, Aalto University, FI-00076 Aalto (Espoo), Finland
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10
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Chen Z, Higashi K, Ueda K, Moribe K. Multistep Crystallization of Pharmaceutical Amorphous Nanoparticles via a Cognate Pathway of Oriented Attachment: Direct Evidence of Nonclassical Crystallization for Organic Molecules. NANO LETTERS 2022; 22:6841-6846. [PMID: 35830610 DOI: 10.1021/acs.nanolett.2c01608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Crystallization of organic molecules is important in a wide range of scientific disciplines. However, in contrast to maturely studied crystallization of inorganic materials, the crystallization mechanisms of organic molecules involving nucleation and crystal growth are still poorly understood. Here, we used time-resolved cryogenic transmission electron microscopy to directly map the morphological evolution of amorphous cyclosporin A (CyA) nanoparticles during CyA crystallization. We successfully observed its initial nucleation and found that the amorphous CyA nanoparticles crystallized via a pathway cognate with oriented attachment, which is the nonclassical crystallization mechanism usually reported for inorganic compounds. Crystalline mesostructured intermediates (mesocrystals) were formed during crystallization. This study revealed clear and direct evidence of mesocrystal formation and oriented attachment in organic pharmaceuticals, providing new insights into the crystallization of organic molecules and theories of nonclassical crystallization.
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Affiliation(s)
- Ziqiao Chen
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Kenjirou Higashi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Keisuke Ueda
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Kunikazu Moribe
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
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11
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Li Y, Zhang M, He L, Rowell N, Kreouzis T, Zhang C, Wang S, Luan C, Chen X, Zhang S, Yu K. Manipulating Reaction Intermediates to Aqueous-Phase ZnSe Magic-Size Clusters and Quantum Dots at Room Temperature. Angew Chem Int Ed Engl 2022; 61:e202209615. [PMID: 35909255 DOI: 10.1002/anie.202209615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Indexed: 02/05/2023]
Abstract
It is not resolved which model describes better the aqueous-phase nucleation and growth of semiconductor quantum dots (QDs), the classical one-step one or the nonclassical multi-step one. Here, we design a room-temperature reaction to trap reaction intermediates in the prenucleation stage of ZnSe QDs (as a model system). We show that the trapped intermediate can transform to magic-size clusters (MSCs) via intra-molecular reorganization and can fragment to enable the growth of QDs. The MSCs exhibit a sharp optical absorption peaking at 299 nm, labelled MSC-299. The intermediate, the precursor compound (PC-299) of MSC-299, is optically transparent at 299 nm and to longer wavelengths. This intermediate forms in various Zn and Se reaction systems. The present study provides unambiguous evidence that the nonclassical and classical pathways are both necessary to explain the nucleation and growth of aqueous-phase QDs, with the former pathway favored more by high reaction concentrations.
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Affiliation(s)
- Yang Li
- Sichuan University, College of Biomedical Engineering, CHINA
| | - Meng Zhang
- Sichuan University, School of Physical and Chemical Sciences, CHINA
| | - Li He
- Sichuan University, College of Biomedical Engineering, CHINA
| | - Nelson Rowell
- National Research Council Canada, Metrology Research Centre, CANADA
| | - Theo Kreouzis
- Queen Mary University of London, School of Physical and Chemical Sciences, UNITED KINGDOM
| | | | - Shanlin Wang
- Sichuan University, Analytical & Testing Center, CHINA
| | - Chaoran Luan
- West China School of Medicine: Sichuan University West China Hospital, Laboratory of Ethnopharmacology, CHINA
| | - Xiaoqin Chen
- Sichuan University, College of Biomedical Engineering, CHINA
| | - Sijie Zhang
- Guizhou University of Engineering Science, , CHINA
| | - Kui Yu
- Sichuan University, National Engineering Research Center for Biomaterials, No. 24, South Section, First Ring Road, Chengdu, 610065, Chengdu, CHINA
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12
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Li Y, Zhang M, He L, Rowell N, Kreouzis T, Zhang C, Wang S, Luan C, Chen X, Zhang S, Yu K. Manipulating Reaction Intermediates to Aqueous‐Phase ZnSe Magic‐Size Clusters and Quantum Dots at Room Temperature. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yang Li
- Sichuan University College of Biomedical Engineering CHINA
| | - Meng Zhang
- Sichuan University School of Physical and Chemical Sciences CHINA
| | - Li He
- Sichuan University College of Biomedical Engineering CHINA
| | - Nelson Rowell
- National Research Council Canada Metrology Research Centre CANADA
| | - Theo Kreouzis
- Queen Mary University of London School of Physical and Chemical Sciences UNITED KINGDOM
| | | | - Shanlin Wang
- Sichuan University Analytical & Testing Center CHINA
| | - Chaoran Luan
- West China School of Medicine: Sichuan University West China Hospital Laboratory of Ethnopharmacology CHINA
| | - Xiaoqin Chen
- Sichuan University College of Biomedical Engineering CHINA
| | - Sijie Zhang
- Guizhou University of Engineering Science CHINA
| | - Kui Yu
- Sichuan University National Engineering Research Center for Biomaterials No. 24, South Section, First Ring Road, Chengdu 610065 Chengdu CHINA
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13
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Liao Z, Wynne K. A Metastable Amorphous Intermediate Is Responsible for Laser-Induced Nucleation of Glycine. J Am Chem Soc 2022; 144:6727-6733. [PMID: 35384650 DOI: 10.1021/jacs.1c11154] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Laser-induced crystal nucleation through optical tweezing, and in particular polymorph selection through laser polarization, promises unprecedented control over crystallization. However, in the absence of a nearby liquid-liquid critical point or miscibility gap, the origin of the required mesoscale clusters remains unclear. A number of recent studies of so-called nonclassical nucleation have suggested the presence of large amorphous clusters. Here, we show that supersaturated aqueous glycine solutions form metastable intermediate particles that are off the direct path to crystal nucleation. Laser-induced crystal nucleation only occurs when the laser "activates" one of these particles. In situ low-frequency Raman spectroscopy is used to demonstrate their amorphous or partially ordered character and transformation to various crystal polymorphs. The requirement for solution aging in many previously reported laser-induced crystal nucleation experiments strongly suggests that the presence of amorphous intermediates is a general requirement.
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Affiliation(s)
- Zhiyu Liao
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Klaas Wynne
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
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14
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Li X, Wang N, Ma Y, Ji X, Huang Y, Huang X, Wang T, Zhou L, Hao H. Revealing the Molecular Mechanism of Cosolvency Based on Thermodynamic Phase Diagram, Molecular Simulation, and Spectrum Analysis: The Tolbutamide Case. J Phys Chem Lett 2022; 13:1628-1635. [PMID: 35142520 DOI: 10.1021/acs.jpclett.1c04115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Cosolvency has been observed in many systems. To reveal the mechanism of cosolvency from the molecular level, the effects of molecular conformation, supramolecular clusters, and interactions on cosolvency were systematically investigated using tolbutamide as a model compound, through experimental exploration, spectral detection, and molecular simulation. The results show that, under the influence of intermolecular and intramolecular interactions, the dominant solute molecular conformations transform and the supramolecular clusters change in different solution systems, which then lead to the cosolvency phenomena.
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Affiliation(s)
- Xin Li
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Na Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Yingjie Ma
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Xiongtao Ji
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Yunhai Huang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Xin Huang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Ting Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Lina Zhou
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
| | - Hongxun Hao
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People's Republic of China
- School of Chemical Engineering and Technology, Hainan University, Haikou 570228, People's Republic of China
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15
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The crystallization of decanoic acid/dopamine supramolecular self-assemblies in the presence of coacervates. J Colloid Interface Sci 2022; 615:759-767. [PMID: 35176542 DOI: 10.1016/j.jcis.2022.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 02/03/2022] [Accepted: 02/04/2022] [Indexed: 11/20/2022]
Abstract
HYPOTHESIS Supramolecular self-assemblies involving non-covalent interactions play important roles in material science as well as living systems as they result in unique properties and/or functions. However, understanding of their self-assembly mechanism and crystallization has remained rudimentary. EXPERIMENT Here, we focus on biomolecular fatty acid and dopamine, which commonly exist in biological systems and closely related to neurodegenerative diseases, and investigate their self-assembly pathway by optical and fluorescence microscopy, DLS, SAXS, TEM, 2D-NMR, etc. FINDINGS: It is found that they could form the crystalline plates in solution or via a metastable liquid - liquid phase separation (LLPS). The nucleation and growth of crystalline plates observed occurs in solution or the dilute phase of LLPS, and not within the concentrated coacervate phase. This is because in coacervate, dopamine intercalates into fatty acid through hydrophobic and electrostatic interaction, which hinders the rearrangement of molecules and nucleation process, whereas in solution or dilute phase, they have the mobility to arrange into ordered structures to maximize electrostatic, hydrogen bonding and π-π interactions, leading to nucleation and crystallization. Moreover, the transitions between the coacervates and crystalline phase can be realized by adjusting the temperature. Our results shed light on the multistep nucleation in the presence of LLPS, as well as molecular mechanisms involved, thus further extending the nucleation-growth mechanisms.
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16
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Yang Y, Li Y, Luan C, Rowell N, Wang S, Zhang C, Huang W, Chen X, Yu K. Transformation Pathways in Colloidal CdTeSe Magic‐Size Clusters. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yusha Yang
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Yang Li
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Chaoran Luan
- Laboratory of Ethnopharmacology West China School of Medicine West China Hospital Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Nelson Rowell
- Metrology Research Centre National Research Council Canada Ontario K1A 0R6 Canada
| | - Shanling Wang
- Analytical & Testing Center Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Chunchun Zhang
- Analytical & Testing Center Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Wen Huang
- Laboratory of Ethnopharmacology West China School of Medicine West China Hospital Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Xiaoqin Chen
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Kui Yu
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
- Institute of Atomic and Molecular Physics Sichuan University Chengdu Sichuan 610065 P. R. China
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17
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Bala R, Sindhu RK, Kaundle B, Madaan R, Cavalu S. The prospective of liquid crystals in nano formulations for drug delivery systems. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Yang Y, Li Y, Luan C, Rowell N, Wang S, Zhang C, Huang W, Chen X, Yu K. Transformation Pathways in Colloidal CdTeSe Magic-Size Clusters. Angew Chem Int Ed Engl 2021; 61:e202114551. [PMID: 34842312 DOI: 10.1002/anie.202114551] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/25/2021] [Indexed: 02/05/2023]
Abstract
A rarely studied transformation in colloidal ternary magic-size clusters (MSCs) is addressed. We report the first observation of the transformation from ternary CdTeSe MSC-399 to MSC-422, which occurs at room temperature. These two MSC types display sharp optical absorption resonances at 399 and 422 nm, respectively, and are related in that they are quasi isomers, together with their counterpart precursor compounds (PCs). Binary CdTe and CdSe samples were prepared in the prenucleation stage also called the induction period (IP). After they were mixed and placed in a mixture of toluene and octylamine, the transformation was found to take place and to be assisted by the addition of the CdSe IP sample. A binary IP sample contains corresponding binary PCs and monomers (Mo) and fragments (Fr). We argue that the transformation pathway is enabled by the corresponding ternary PCs, involving the substitution reaction, namely CdTeSe PC-399 + CdSe (Mo/Fr)-1 ⇒ CdTeSe PC-422 + CdSe (Mo/Fr)-2. The present study provides an in-depth understanding of the formation characteristics of the MSCs.
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Affiliation(s)
- Yusha Yang
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Yang Li
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Chaoran Luan
- Laboratory of Ethnopharmacology, West China School of Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Nelson Rowell
- Metrology Research Centre, National Research Council Canada, Ontario, K1A 0R6, Canada
| | - Shanling Wang
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Chunchun Zhang
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Wen Huang
- Laboratory of Ethnopharmacology, West China School of Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Xiaoqin Chen
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Kui Yu
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan, 610065, P. R. China.,Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
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19
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Li S, Gong X, Yu M, Li Z, Chen Y, Wang S, Yu H, Shao H. Preparation of a Water-Soluble Zn X Cd 1-X S Quantum Dot Photocatalyst at Room Temperature Assisted by 3-Mercaptopropionic Acid. Chem Asian J 2021; 16:3619-3623. [PMID: 34528410 DOI: 10.1002/asia.202100904] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/11/2021] [Indexed: 11/07/2022]
Abstract
An effective path to synthesize Znx Cd1-x S quantum dots (ZCS QDs) in aqueous phase at room temperature has remained relatively unexplored. Here, we developed a room-temperature, aqueous-phase approach to ZCS QDs, using 3-mercaptopropionic acid (MPA) to adjust the pH of the reaction precursor solution to regulate the competition between sulfur source and hydroxyl group, and realize the large-scale preparation of water-soluble ZCS QDs photocatalyst at room temperature. Without recombination with other materials, and only by regulating the ratio of pH, excess sulfur sources and Zn/Cd, the photocatalytic degradation of rhodamine B (RhB) can reach 98% within 1 min, showing high photocatalytic activity. ZCS QDs show high stability and recoverability, and are expected to be able to deal with organic pollutants on a large scale. This study provides a new idea for the preparation of other QDs at room temperature.
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Affiliation(s)
- Shenjie Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Xiaoyu Gong
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Minghui Yu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Zhiqiang Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Yanyan Chen
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Shuang Wang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Hao Yu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
| | - Hongyu Shao
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, P. R. China
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20
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21
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Makuch E, Ossowicz-Rupniewska P, Klebeko J, Janus E. Biodegradation of L-Valine Alkyl Ester Ibuprofenates by Bacterial Cultures. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3180. [PMID: 34207691 PMCID: PMC8228323 DOI: 10.3390/ma14123180] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/05/2021] [Accepted: 06/08/2021] [Indexed: 12/13/2022]
Abstract
Nowadays, we consume very large amounts of medicinal substances. Medicines are used to cure, halt, or prevent disease, ease symptoms, or help in the diagnosis of illnesses. Some medications are used to treat pain. Ibuprofen is one of the most popular drugs in the world (it ranks third). This drug enters our water system through human pharmaceutical use. In this article, we describe and compare the biodegradation of ibuprofen and ibuprofen derivatives-salts of L-valine alkyl esters. Biodegradation studies of ibuprofen and its derivatives have been carried out with activated sludge. The structure modifications we received were aimed at increasing the biodegradation of the drug used. The influence of the alkyl chain length of the ester used in the biodegradation of the compound was also verified. The biodegradation results correlated with the lipophilic properties (log P).
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Affiliation(s)
| | - Paula Ossowicz-Rupniewska
- Department of Chemical Organic Technology and Polymeric Materials, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, PL-70322 Szczecin, Poland; (E.M.); (J.K.); (E.J.)
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22
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Tsarfati Y, Biran I, Wiedenbeck E, Houben L, Cölfen H, Rybtchinski B. Continuum Crystallization Model Derived from Pharmaceutical Crystallization Mechanisms. ACS CENTRAL SCIENCE 2021; 7:900-908. [PMID: 34079905 PMCID: PMC8161475 DOI: 10.1021/acscentsci.1c00254] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Indexed: 06/12/2023]
Abstract
The crystallization mechanisms of organic molecules in solution are not well-understood. The mechanistic scenarios where crystalline order evolves directly from the molecularly dissolved state ("classical") and from initially formed amorphous intermediates ("nonclassical") are suggested and debated. Here, we studied crystallization mechanisms of two widely used analgesics, ibuprofen (IbuH) and etoricoxib (ETO), using direct cryogenic transmission electron microscopy (cryo-TEM) imaging. In the IbuH case, parallel crystallization pathways involved diverse phases of high and low density, in which the instantaneous formation of final crystalline order was observed. ETO crystallization started from well-defined round-shaped amorphous intermediates that gradually evolved into crystals. This mechanistic diversity is rationalized by introducing a continuum crystallization paradigm: order evolution depends on ordering in the initially formed intermediates and efficiency of molecular rearrangements within them, and there is a continuum of states related to the initial order and rearrangement rates. This model provides a unified view of crystallization mechanisms, encompassing classical and nonclassical pictures.
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Affiliation(s)
- Yael Tsarfati
- Department
of Molecular Chemistry and Materials Science and Department of
Chemical Research Support, Weizmann Institute
of Science, Rehovot 76100, Israel
| | - Idan Biran
- Department
of Molecular Chemistry and Materials Science and Department of
Chemical Research Support, Weizmann Institute
of Science, Rehovot 76100, Israel
| | - Eduard Wiedenbeck
- Physical
Chemistry, Department of Chemistry, University
of Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Lothar Houben
- Department
of Molecular Chemistry and Materials Science and Department of
Chemical Research Support, Weizmann Institute
of Science, Rehovot 76100, Israel
| | - Helmut Cölfen
- Physical
Chemistry, Department of Chemistry, University
of Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Boris Rybtchinski
- Department
of Molecular Chemistry and Materials Science and Department of
Chemical Research Support, Weizmann Institute
of Science, Rehovot 76100, Israel
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23
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Ueda K, Moseson DE, Pathak V, Taylor LS. Effect of Polymer Species on Maximum Aqueous Phase Supersaturation Revealed by Quantitative Nuclear Magnetic Resonance Spectroscopy. Mol Pharm 2021; 18:1344-1355. [PMID: 33595322 DOI: 10.1021/acs.molpharmaceut.0c01174] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The polymer used in an amorphous solid dispersion (ASD) formulation impacts the maximum achievable drug supersaturation. Herein, the effect of dissolved polymer on drug concentration in the aqueous phase when a drug-rich phase was generated by liquid-liquid phase separation (LLPS) was investigated for different polymers at various concentrations of drug and polymer. Solution nuclear magnetic resonance (NMR) spectroscopy revealed that polyvinylpyrrolidone (PVP), polyvinylpyrrolidone/vinyl acetate (PVP-VA), and hypromellose (HPMC) distributed into the ibuprofen (IBP)-rich phase formed by LLPS when the amorphous solubility of IBP was exceeded. The amount of polymer in the drug-rich phase increased for higher-molecular-weight grades of PVP and HPMC. Moreover, PVP-VA showed a greater extent of distribution into the IBP-rich phase compared to PVP, and this is attributed to its reduced hydrophilicity resulting from the incorporation of vinyl acetate monomers. Direct quantification by NMR measurements indicated that the IBP concentration in the aqueous phase decreased as the amount of polymer in the IBP-rich phase increased. This can be attributed to a reduction of the chemical potential of IBP in the IBP-rich phase. The reduction in dissolved IBP concentration was greater for the IBP/PVP-VA system compared to the IBP/HPMC system, as a result of more extensive drug-polymer interactions in the former system. The present study highlights the impact of polymer selection on the attainable supersaturation of the drug and the factors that need to be considered in the formulation of ASDs to obtain optimized in vivo performance.
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Affiliation(s)
- Keisuke Ueda
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan.,Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
| | - Dana E Moseson
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
| | - Vaibhav Pathak
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
| | - Lynne S Taylor
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
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24
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Harano K. Self-Assembly Mechanism in Nucleation Processes of Molecular Crystalline Materials. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200333] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Koji Harano
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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25
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Complex structures arising from the self-assembly of a simple organic salt. Nature 2021; 590:275-278. [PMID: 33568820 DOI: 10.1038/s41586-021-03194-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 11/12/2020] [Indexed: 11/08/2022]
Abstract
Molecular self-assembly is the spontaneous association of simple molecules into larger and ordered structures1. It is the basis of several natural processes, such as the formation of colloids, crystals, proteins, viruses and double-helical DNA2. Molecular self-assembly has inspired strategies for the rational design of materials with specific chemical and physical properties3, and is one of the most important concepts in supramolecular chemistry. Although molecular self-assembly has been extensively investigated, understanding the rules governing this phenomenon remains challenging. Here we report on a simple hydrochloride salt of fampridine that crystallizes as four different structures, two of which adopt unusual self-assemblies consisting of polyhedral clusters of chloride and pyridinium ions. These two structures represent Frank-Kasper (FK) phases of a small and rigid organic molecule. Although discovered in metal alloys4,5 more than 60 years ago, FK phases have recently been observed in several classes of supramolecular soft matter6-11 and in gold nanocrystal superlattices12 and remain the object of recent discoveries13. In these systems, atoms or spherical assemblies of molecules are packed to form polyhedra with coordination numbers 12, 14, 15 or 16. The two FK structures reported here crystallize from a dense liquid phase and show a complexity that is generally not observed in small rigid organic molecules. Investigation of the precursor dense liquid phase by cryogenic electron microscopy reveals the presence of spherical aggregates with sizes ranging between 1.5 and 4.6 nanometres. These structures, together with the experimental procedure used for their preparation, invite interesting speculation about their formation and open different perspectives for the design of organic crystalline materials.
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26
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Leffler V, Ehlert S, Förster B, Dulle M, Förster S. Nanoparticle Heat-Up Synthesis: In Situ X-ray Diffraction and Extension from Classical to Nonclassical Nucleation and Growth Theory. ACS NANO 2021; 15:840-856. [PMID: 33393769 DOI: 10.1021/acsnano.0c07359] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Heat-up synthesis routes are very commonly used for the controlled large-scale production of semiconductor and magnetic nanoparticles with narrow size distribution and high crystallinity. To obtain fundamental insights into the nucleation and growth kinetics is particularly demanding, because these procedures involve heating to temperatures above 300 °C. We designed a sample environment to perform in situ SAXS/WAXS experiments to investigate the nucleation and growth kinetics of iron oxide nanoparticles during heat-up synthesis up to 320 °C. The analysis of the growth curves for varying heating rates, Fe/ligand ratios, and plateau temperatures shows that the kinetics proceeds via a characteristic sequence of three phases: an induction Phase I, a final growth Phase III, and an intermediate Phase II, which can be divided into an early phase with the evolution and subsequent dissolution of an amorphous transient state, and a late phase, where crystalline particle nucleation and aggregation occurs. We extended classical nucleation and growth theory to account for an amorphous transient state and particle aggregation during the nucleation and growth phases. We find that this nonclassical theory is able to quantitatively describe all measured growth curves. The model provides fundamental insights into the underlying kinetic processes especially in the complex Phase II with the occurrence of a transient amorphous state, the nucleation of crystalline primary particles, particle growth, and particle aggregation proceeding on overlapping time scales. The described in situ experiments together with the extension of the classical nucleation and growth model highlight the two most important features of nonclassical nucleation and growth routes, i.e., the formation of intermediate or transient species and particle aggregation processes. They thus allow us to quantitatively understand, predict, and control nanoparticle nucleation and growth kinetics for a wide range of nanoparticle systems and synthetic procedures.
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Affiliation(s)
- Vanessa Leffler
- Jülich Centre for Neutron Science (JCNS-1/IBI-8), Forschungszentrum Jülich, 52425 Jülich, Germany
- Institute of Physical Chemistry, RWTH Aachen University, 52074 Aachen, Germany
| | - Sascha Ehlert
- Jülich Centre for Neutron Science (JCNS-1/IBI-8), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Beate Förster
- Institute of Physical Chemistry, RWTH Aachen University, 52074 Aachen, Germany
- Ernst Ruska Center, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Martin Dulle
- Jülich Centre for Neutron Science (JCNS-1/IBI-8), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Stephan Förster
- Jülich Centre for Neutron Science (JCNS-1/IBI-8), Forschungszentrum Jülich, 52425 Jülich, Germany
- Institute of Physical Chemistry, RWTH Aachen University, 52074 Aachen, Germany
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27
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Cookman J, Hamilton V, Hall SR, Bangert U. Non-classical crystallisation pathway directly observed for a pharmaceutical crystal via liquid phase electron microscopy. Sci Rep 2020; 10:19156. [PMID: 33154480 PMCID: PMC7644682 DOI: 10.1038/s41598-020-75937-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 10/22/2020] [Indexed: 12/18/2022] Open
Abstract
Non-classical crystallisation (NCC) pathways are widely accepted, however there is conflicting evidence regarding the intermediate stages of crystallisation, how they manifest and further develop into crystals. Evidence from direct observations is especially lacking for small organic molecules, as distinguishing these low-electron dense entities from their similar liquid-phase surroundings presents signal-to-noise ratio and contrast challenges. Here, Liquid Phase Electron Microscopy (LPEM) captures the intermediate pre-crystalline stages of a small organic molecule, flufenamic acid (FFA), a common pharmaceutical. High temporospatial imaging of FFA in its native environment, an organic solvent, suggests that in this system a Pre-Nucleation Cluster (PNC) pathway is followed by features exhibiting two-step nucleation. This work adds to the growing body of evidence that suggests nucleation pathways are likely an amalgamation of multiple existing non-classical theories and highlights the need for the direct evidence presented by in situ techniques such as LPEM.
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Affiliation(s)
- J Cookman
- Physics Department & Bernal Institute, University of Limerick, Castletroy, Co. Limerick, Ireland
| | - V Hamilton
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - S R Hall
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
| | - U Bangert
- Physics Department & Bernal Institute, University of Limerick, Castletroy, Co. Limerick, Ireland.
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28
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Wan W, Zhang M, Zhao M, Rowell N, Zhang C, Wang S, Kreouzis T, Fan H, Huang W, Yu K. Room-temperature formation of CdS magic-size clusters in aqueous solutions assisted by primary amines. Nat Commun 2020; 11:4199. [PMID: 32826911 PMCID: PMC7442802 DOI: 10.1038/s41467-020-18014-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 07/24/2020] [Indexed: 02/05/2023] Open
Abstract
Aqueous-phase approaches to semiconductor CdS magic-size clusters (MSCs) and the formation pathway have remained relatively unexplored. Here, we report the demonstration of an aqueous-phase, room-temperature approach to CdS MSCs, together with an exploration of their evolution pathway. The resulting CdS MSCs display a sharp optical absorption peak at about 360 nm and are labeled MSC-360. With CdCl2 and thiourea as the respective Cd and S sources, and 3-mercarpotopropionic acid as the ligand, CdS MSC-360 develops in a mixture of a primary amine and water. We argue that the primary amine facilitates room-temperature decomposition of thiourea when CdCl2 is present, and the formation pathway of MSCs is similar to that in organic-phase approaches. Our findings show there is a viable avenue to room-temperature aqueous-phase formation of CdS MSCs. Providing explanations of the procedure developed including the formation of large aggregates, the present study represents an important advance towards a mechanistic understanding of nanocrystal synthesis. CdS magic-size clusters have, so far, been prepared only in organic solvents. Here, the authors report an aqueous-phase synthesis for CdS magic-size clusters at room temperature and reveal insights into the formation mechanism, including the key role of primary amines.
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Affiliation(s)
- Wushuang Wan
- School of Chemical Engineering, Sichuan University, 610065, Chengdu, PR China
| | - Meng Zhang
- Institute of Atomic and Molecular Physics, Sichuan University, 610065, Chengdu, PR China
| | - Min Zhao
- School of Chemical Engineering, Sichuan University, 610065, Chengdu, PR China
| | - Nelson Rowell
- Metrology Research Centre, National Research Council of Canada, Ottawa, ON, K1A 0R6, Canada
| | - Chunchun Zhang
- Analytical & Testing Center, Sichuan University, 610065, Chengdu, PR China
| | - Shanling Wang
- Analytical & Testing Center, Sichuan University, 610065, Chengdu, PR China
| | - Theo Kreouzis
- School of Physics and Astronomy, Queen Mary University of London, London, E1 4NS, UK
| | - Hongsong Fan
- Engineering Research Center in Biomaterials, Sichuan University, 610065, Chengdu, PR China
| | - Wen Huang
- Laboratory of Ethnopharmacology, West China School of Medicine, West China Hospital, Sichuan University, 610065, Chengdu, PR China
| | - Kui Yu
- Institute of Atomic and Molecular Physics, Sichuan University, 610065, Chengdu, PR China. .,Engineering Research Center in Biomaterials, Sichuan University, 610065, Chengdu, PR China. .,State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065, Chengdu, PR China.
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29
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Yuan C, Yang M, Ren X, Zou Q, Yan X. Porphyrin/Ionic‐Liquid Co‐assembly Polymorphism Controlled by Liquid–Liquid Phase Separation. Angew Chem Int Ed Engl 2020; 59:17456-17460. [DOI: 10.1002/anie.202007459] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Chengqian Yuan
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Mengyao Yang
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Xiaokang Ren
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Qianli Zou
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Xuehai Yan
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Center for Mesoscience Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
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30
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Yuan C, Yang M, Ren X, Zou Q, Yan X. Porphyrin/Ionic‐Liquid Co‐assembly Polymorphism Controlled by Liquid–Liquid Phase Separation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007459] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Chengqian Yuan
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Mengyao Yang
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Xiaokang Ren
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Qianli Zou
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Xuehai Yan
- State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Center for Mesoscience Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China
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31
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Zhang H, Luan C, Gao D, Zhang M, Rowell N, Willis M, Chen M, Zeng J, Fan H, Huang W, Chen X, Yu K. Room‐Temperature Formation Pathway for CdTeSe Alloy Magic‐Size Clusters. Angew Chem Int Ed Engl 2020; 59:16943-16952. [PMID: 32558096 DOI: 10.1002/anie.202005643] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Indexed: 02/05/2023]
Affiliation(s)
- Hai Zhang
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Chaoran Luan
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
- Laboratory of Ethnopharmacology West China School of Medicine Chengdu Sichuan 610065 P. R. China
- West China Hospital Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Dong Gao
- Institute of Atomic and Molecular Physics Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Meng Zhang
- Institute of Atomic and Molecular Physics Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Nelson Rowell
- Metrology Research Centre National Research Council Canada Ottawa Ontario K1A 0R6 Canada
| | - Maureen Willis
- School of Physical Science and Technology Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Meng Chen
- School of Chemical Engineering Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Jianrong Zeng
- Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204 P. R. China
- Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 P. R. China
| | - Hongsong Fan
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Wen Huang
- Laboratory of Ethnopharmacology West China School of Medicine Chengdu Sichuan 610065 P. R. China
- West China Hospital Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Xiaoqin Chen
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Kui Yu
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
- Institute of Atomic and Molecular Physics Sichuan University Chengdu Sichuan 610065 P. R. China
- State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu Sichuan 610065 P. R. China
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32
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33
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Li L, Zhang J, Zhang M, Rowell N, Zhang C, Wang S, Lu J, Fan H, Huang W, Chen X, Yu K. Fragmentation of Magic‐Size Cluster Precursor Compounds into Ultrasmall CdS Quantum Dots with Enhanced Particle Yield at Low Temperatures. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001608] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Lijia Li
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Jing Zhang
- Institute of Atomic and Molecular Physics Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Meng Zhang
- Institute of Atomic and Molecular Physics Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Nelson Rowell
- Metrology Research Centre National Research Council Canada Ottawa Ontario K1A 0R6 Canada
| | - Chunchun Zhang
- Analytical and Testing Center Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Shanling Wang
- Analytical and Testing Center Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Jiao Lu
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Hongsong Fan
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Wen Huang
- Laboratory of Ethnopharmacology West China School of Medicine Chengdu Sichuan 610065 P. R. China
- West China Hospital Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Xiaoqin Chen
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Kui Yu
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
- Institute of Atomic and Molecular Physics Sichuan University Chengdu Sichuan 610065 P. R. China
- State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu Sichuan 610065 P. R. China
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34
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Li L, Zhang J, Zhang M, Rowell N, Zhang C, Wang S, Lu J, Fan H, Huang W, Chen X, Yu K. Fragmentation of Magic‐Size Cluster Precursor Compounds into Ultrasmall CdS Quantum Dots with Enhanced Particle Yield at Low Temperatures. Angew Chem Int Ed Engl 2020; 59:12013-12021. [PMID: 32390296 DOI: 10.1002/anie.202001608] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Indexed: 02/05/2023]
Affiliation(s)
- Lijia Li
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Jing Zhang
- Institute of Atomic and Molecular Physics Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Meng Zhang
- Institute of Atomic and Molecular Physics Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Nelson Rowell
- Metrology Research Centre National Research Council Canada Ottawa Ontario K1A 0R6 Canada
| | - Chunchun Zhang
- Analytical and Testing Center Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Shanling Wang
- Analytical and Testing Center Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Jiao Lu
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Hongsong Fan
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Wen Huang
- Laboratory of Ethnopharmacology West China School of Medicine Chengdu Sichuan 610065 P. R. China
- West China Hospital Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Xiaoqin Chen
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
| | - Kui Yu
- Engineering Research Center in Biomaterials Sichuan University Chengdu Sichuan 610065 P. R. China
- Institute of Atomic and Molecular Physics Sichuan University Chengdu Sichuan 610065 P. R. China
- State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu Sichuan 610065 P. R. China
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35
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36
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Chen M, Luan C, Zhang M, Rowell N, Willis M, Zhang C, Wang S, Zhu X, Fan H, Huang W, Yu K, Liang B. Evolution of CdTe Magic-Size Clusters with Single Absorption Doublet Assisted by Adding Small Molecules during Prenucleation. JOURNAL OF PHYSICAL CHEMISTRY LETTERS 2020; 11:2230-2240. [PMID: 32134665 DOI: 10.1021/acs.jpclett.0c00258] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An approach is reported for the exclusive production of CdTe magic-size clusters (MSCs) that exhibit an optical absorption doublet peaking at 385/427 nm, with an explanation of the synthesis procedure. The MSCs, defined as dMSC-427, were produced from the reaction of cadmium oleate (Cd(OA)2) and tri-n-octylphosphine telluride in octadecene at 100 °C, with the addition of acetic acid (HOAc) or acetate (M(OAc)2) during the prenucleation stage (40 °C). Without such an addition or when it was performed in the postnucleation stage (100 °C), quantum dots (QDs) developed. The production of dMSC-427 or QDs is hypothesized to be related to the solubility of the Cd precursor, such as Cd(OA)1(OAc)1 or Cd(OA)2, respectively. Also, the reactions that lead to Cd(OA)1(OAc)1 are proposed. The present study provides an in-depth understanding of the two-pathway model proposed for the prenucleation stage of binary colloidal QDs, as well as of the formation of MSCs and/or QDs.
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Affiliation(s)
- Meng Chen
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Chaoran Luan
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Meng Zhang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Nelson Rowell
- Metrology Research Centre, National Research Council of Canada, Ottawa, Ontario K1A 0R6, Canada
| | - Maureen Willis
- School of Physical Science and Technology, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Chunchun Zhang
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Shanling Wang
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Xiaohong Zhu
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Hongsong Fan
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Wen Huang
- Laboratory of Ethnopharmacology, West China School of Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Kui Yu
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu, Sichuan 610065, P.R. China.,Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, Sichuan 610065, P.R. China.,State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Bin Liang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China
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37
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Abstract
This work provides a clearer picture for non-classical nucleation by revealing the presence of various intermediates using advanced characterization techniques.
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Affiliation(s)
- Biao Jin
- Physical Sciences Division
- Pacific Northwest National Laboratory
- Richland
- USA
- Department of Chemistry
| | - Zhaoming Liu
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
| | - Ruikang Tang
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
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38
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Wiedenbeck E, Kovermann M, Gebauer D, Cölfen H. Liquid Metastable Precursors of Ibuprofen as Aqueous Nucleation Intermediates. Angew Chem Int Ed Engl 2019; 58:19103-19109. [PMID: 31556970 PMCID: PMC6972611 DOI: 10.1002/anie.201910986] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Indexed: 01/25/2023]
Abstract
The nucleation mechanism of crystals of small organic molecules, postulated based on computer simulations, still lacks experimental evidence. In this study we designed an experimental approach to monitor the early stages of the crystallization of ibuprofen as a model system for small organic molecules. Ibuprofen undergoes liquid–liquid phase separation prior to nucleation. The binodal and spinodal limits of the corresponding liquid–liquid miscibility gap were analyzed and confirmed. An increase in viscosity sustains the kinetic stability of the dense liquid intermediate. Since the distances between ibuprofen molecules within the dense liquid phase are similar to those in the crystal forms, this dense liquid phase is identified as a precursor phase in the nucleation of ibuprofen, in which densification is followed by generation of structural order. This discovery may make it possible to enrich poorly soluble pharmaceuticals beyond classical solubility limitations in aqueous environments.
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Affiliation(s)
- Eduard Wiedenbeck
- Physical Chemistry, University of Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Michael Kovermann
- Physical Chemistry, University of Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Denis Gebauer
- Leibniz University of Hannover, Institute of Inorganic Chemistry, Callinstraße 9, 30167, Hannover, Germany
| | - Helmut Cölfen
- Physical Chemistry, University of Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
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