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Europium doped LaF3 nanocrystals with organic 9-oxidophenalenone capping ligands that display visible light excitable steady-state blue and time delayed red emission

16-12-2014 | Mir Irfanullah; Arindam Chowdhury; Dharmendar Kumar Sharma; Ramya Chulliyil, Dalton Transactions, 2014

A visible light excitable and colour tunable ~5% Eu3+-doped LaF3 nanocrystals (NCs) containing 9-oxidophenalenone ligands bound to the surface as visible light sensitizers for Eu3+ dopants, have been synthesized by a facile solution based method. The crystalline phase structure, size, ...

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Effect of operating conditions on size and morphology of amylose nanoparticles prepared by precipitation

12-12-2014 | Yan Dong, Yanjiao Chang, Qian Wang, Jin Tong, Jiang Zhou, Starch - Stärke, 2014

Nano‐sized amylose particles were prepared by precipitating amylose solution (using DMSO/water mixture as solvent) with absolute ethanol. Effects of operating conditions, including temperature and solvent composition for preparing amylose solution, amylose concentration, ethanol amount used for ...

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Shape-controlled synthesis of phosphor K2SiF6:Mn4+ nanorods and their luminescence properties

10-12-2014 | Xiaoqing Li; Xiangming Su; Ping Liu; Jie Liu; Zhiling Yao; Jiajun Chen; Hui Yao; Xibin Yu; Ming Zhan, CrystEngComm, 2014

A series of efficient red phosphor K2SiF6:Mn4+ nanoparticles with uniform morphology and dispersity were successfully prepared through a fast liquid–solid solution route at room temperature. Potassium oleate and SiO2 spheres/KMnO4 molar ratio play an important role in the formation of the nanorod ...

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Shape-controlled synthesis of K2SiF6:Mn4+ nanorods phosphor and luminescent properties

02-12-2014 | Xiaioqing Li; Xiangming Su; Pin Liu; jie liu; Zhiling Yao; Jiajun Chen; Hui Yao; Xi bin Yu; Ming Zhan, CrystEngComm, 2014

A series of efficient red phosphor K2SiF6:Mn4+ nanoparticles with uniform morphology and dispersity were successfully prepared through a fast liquid-solid-solution route at room temperature. Potassium oleate and SiO2 spheresKMnO4 molar ratio play important role in the formation of nanorods ...

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Reproducible One-Step Fabrication of Compact MAPbI3–xClx Thin Films Derived from Mixed-Lead-Halide Precursors

02-12-2014 | Dong Wang; Zhihong Liu; Zhongmin Zhou; Huimin Zhu; Yuanyuan Zhou; Changshui Huang; Zaiwei Wang; Hongxia Xu; Yizheng ..., Chemistry of Materials, 2014

Methylammonium lead trihalide perovskites are attracting intensive interest due to its high photovoltaic performance, low cost and one-step solution processability. Since the morphology of the perovskite thin films play the central role on the cell performance, a plethora of methods have been ...

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Impact of Electrostatics on the Adsorption of Microgels at the Interface of Pickering Emulsions

02-12-2014 | Pascal Massé; Elisabeth Sellier; Véronique Schmitt; Valérie Ravaine, Langmuir, 2014

The importance of electrostatics on microgel adsorption at a liquid interface is studied, as well as its consequence on emulsion stabilization. In this work, poly(N-isopropylacrylamide) (pNIPAM) microgels bearing different numbers of charges and various distribution profiles are studied, both in ...

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Controlling the Dominant Length Scale of Liquid–Liquid Phase Separation in Spin‐coated Organic Semiconductor Films

01-12-2014 | Jacobus J. van Franeker, Daniel Westhoff, Mathieu Turbiez, Martijn M. Wienk, Volker Schmidt, René A. J. Janssen, Advanced Functional Materials, 2014

Organic electronic devices are often made by solution processing a multi‐component ink. During solution processing, for example, via spin coating, the solvent evaporates and the solid components deposit on the substrate. The morphology of this layer can range from well‐mixed to extensively phase ...

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Deposition and characterization of TiAlSiN coatings prepared by hybrid PVD coating system

01-12-2014 | Jinfeng Wu, Nairu He, Hongxuan Li, Xiaohong Liu, Li Ji, Xiaopeng Huang, Jianmin Chen, Surface and Interface Analysis, 2014

TiAlSiN coatings with different Si contents were deposited on silicon and high‐temperature alloy by using a hybrid physical vapor deposition coating system, where the cathodic arc ion plating was combined with a twin target mid‐frequency magnetron sputtering. The chemical composition, ...

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Phytochemical fabrication and characterization of silver nanoparticles by using Pepper leaf broth

30-11-2014 | Author(s): K. Mallikarjuna , N. John Sushma , G. Narasimha , L. Manoj , B. Deva Prasad Raju, Arabian Journal of Chemistry, 2014

Publication date: December 2014 Source:Arabian Journal of Chemistry, Volume 7, Issue 6 Author(s): K. Mallikarjuna , N. John Sushma , G. Narasimha , L. Manoj , B. Deva Prasad Raju The Pepper leaves extract acts as a reducing and capping agent in the formation of silver nanoparticles. A ...

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Superior Lithium‐Ion Storage Properties of Si‐Based Composite Powders with Unique Si@Carbon@Void@Graphene Configuration

28-11-2014 | Seung Ho Choi, Dae Soo Jung, Jang Wook Choi, Yun Chan Kang, Chemistry - A European Journal, 2014

Abstract Composite powders of the configuration Si@carbon@void@graphene were prepared by a one‐step spray pyrolysis process, by adding polyvinylpyrrolidone (PVP) to a precursor solution containing graphene oxide (GO) sheets and silicon nanoparticles (NPs). Morphological analysis indicates that ...

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