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Erik D. Spoerke Bridget A. Connor Dara V. Gough Bonnie B. McKenzie George D. Bachand 《Particle & Particle Systems Characterization》2014,31(8):863-870
This paper describes the use of microtubules (MTs) as nanoscale templates for the biologically directed growth and assembly of cadmium sulfide (CdS) nanotubes. CdS is a wide bandgap semiconductor with valuable optical, electronic, and chemical properties, and the organization of CdS nanostructures is critical to their widespread utility. The present work explores a bioinspired, biomediated approach to the formation and assembly of CdS nanotubes. In particular, a biomimetic synthetic strategy is used to control the uniform growth of cubic zinc blende CdS nanocrystals on MT templates, replicating the MTs' tubular morphology with dense CdS only a single nanocrystal thick. Furthermore, specific interactions between MTs and functional microtubule‐associated proteins (MAPs) are exploited to manipulate the secondary organization of these MT templates. The subsequent directed growth of CdS nanotubes on these structures produces specific biomediated architectures including linear arrays, 3D asters, and rings. Finally, cathodoluminescence from MT‐templated CdS structures verifies that the valuable semiconducting character of these materials is exhibited. These demonstrations of nanoscale materials synthesis and assembly illustrate a new level of complexity and control over materials synthesis that may be achieved using such biological tools and processes. 相似文献
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Self‐Assembly: Self‐Organization of Anisotropic and Binary Colloids in Thermo‐Switchable 1D Microconfinement (Part. Part. Syst. Charact. 3/2015)
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Julius W. J. de Folter Ping Liu Lingxiang Jiang Anke Kuijk Henriëtte E. Bakker Arnout Imhof Alfons van Blaaderen Jianbin Huang Willem K. Kegel Albert P. Philipse Andrei V. Petukhov 《Particle & Particle Systems Characterization》2015,32(3):270-270
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Light‐Emitting Diodes: Highly Efficient and Stable Luminescence from Microbeans Integrated with Cd‐Free Quantum Dots for White‐Light‐Emitting Diodes (Part. Part. Syst. Charact. 10/2015)
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Wei Chen Kai Wang Junjie Hao Dan Wu Shang Wang Jing Qin Chen Li Wanqiang Cao 《Particle & Particle Systems Characterization》2015,32(10):917-917
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Martin Depardieu Maxime Nollet Mathieu Destribats Véronique Schmitt Rénal Backov 《Particle & Particle Systems Characterization》2013,30(2):204-204
Complex wax@water@SiO2 multicore capsules are synthesized by combining sol‐gel process and formulation of wax‐in‐water‐in‐oil double emulsions. The inner direct wax‐in‐water emulsion is stabilized with modified silica nanoparticles using limited coalescence occurring in Pickering emulsions. In a second step, this obtained liquid dispersion is emulsified in poly‐dimethylsiloxane (PDMS) using a non ionic surfactant to stabilize the second water/oil interface. Finally, a sol‐gel process is employed to mineralize the as‐generated double emulsions giving rise to wax@water@SiO2 multicore capsules. Due to the wax volume expansion through melting, the as‐synthesized multicore capsules offer thermally stimulated release that is enhanced when surfactant is added in the surrounding continuous oil phase. In addition, the melted wax release can be tuned from a one‐step process to a more sequential dropping mode by varying the mineral precursor tetraethoxy‐orthosilane (TEOS) concentration in the oily phase during mineralization. 相似文献
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Core–Shell Materials: Combination of HAADF‐STEM and ADF‐STEM Tomography for Core–Shell Hybrid Materials (Part. Part. Syst. Charact. 12/2015)
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Kadir Sentosun Marta N. Sanz Ortiz K. Joost Batenburg Luis M. Liz‐Marzán Sara Bals 《Particle & Particle Systems Characterization》2015,32(12):1045-1045
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Colloidal Nanoparticles: Nanocrystal Self‐Assembly into Hollow Dome‐Shaped Microstructures by Slow Solvent Evaporation on Superhydrophobic Substrates (Part. Part. Syst. Charact. 5/2015)
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Angelo Accardo Francesco Di Stasio Manfred Burghammer Christian Riekel Roman Krahne 《Particle & Particle Systems Characterization》2015,32(5):507-507
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Antonio Arcelli Alessandro Bongini Gianni Porzi Samuele Rinaldi 《Journal of Physical Organic Chemistry》2012,25(2):132-141
The ammonolysis of three morpholine‐2,5‐dione derivatives was investigated and the mechanism ascertained by kinetic studies and theoretical calculations. The kinetics, followed by high‐performance liquid chromatography analysis, evidenced the presence of two intermediates, which were isolated and characterized. The ammonolysis occurs with a complex mechanism involving two consecutive reactions followed by two parallel ones. The second step of the whole reaction involves an anchimeric assistance of the primary amide group. The pseudo‐first‐order rate constants were calculated by appropriate equations, which describe the single steps of the process. Computational density functional theory investigations of vicinal primary amide group participation were performed using a model compound, and the transition states were generated. The theoretical calculations evidenced the essential role exerted by ammonia, which acts as a proton transfer. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
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Chemical Sensing: Incorporating Copper Nanoclusters into Metal‐Organic Frameworks: Confinement‐Assisted Emission Enhancement and Application for Trinitrotoluene Detection (Part. Part. Syst. Charact. 6/2017)
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Zhenguang Wang Rui Chen Yuan Xiong Klara Cepe Julian Schneider Radek Zboril Chun‐Sing Lee Andrey L. Rogach 《Particle & Particle Systems Characterization》2017,34(6)