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Thermodynamics of Solvent Interaction with the Metal – Organic Framework MOF-5

01-Dec-2015 | Zamirbek Akimbekov; Di Wu; Carl K. Brozek; Mircea Dinca; Alexandra Navrotsky, Physical Chemistry Chemical Physics, 2015

The inclusion of solvent in metal organic framework (MOF) materials is a highly specific form of guest – host interaction. In this work, the energetics of solvent – MOF-5 interactions has been investigated by solution calorimetry in 5 M sodium hydroxide (NaOH) at room temperature. Solution ...


Polymer nanospheres formed by a microfluidic technique with Evans blue dye

27-Nov-2015 | Israfil Kucuk, Polymers for Advanced Technologies, 2015

In this work, the V‐shaped microfluidic junction (VMJ) device technique with gas/liquid interface was used to prepare textured polymer nanospheres from bubble bursting for drug delivery. The polymer/dye solution, N2 gas, and a volatile liquid, perfluorohexane (PFH) were simultaneously fed using ...


[Report] Near-unity photoluminescence quantum yield in MoS2

27-Nov-2015 | Matin Amani; Der-Hsien Lien; Daisuke Kiriya; Jun Xiao; Angelica Azcatl; Jiyoung Noh; Surabhi R. Madhvapathy; Rafik A ..., Science , 2015

Two-dimensional (2D) transition metal dichalcogenides have emerged as a promising material system for optoelectronic applications, but their primary figure of merit, the room-temperature photoluminescence quantum yield (QY), is extremely low. The prototypical 2D material molybdenum disulfide ...


Study of Bacterial Cell Colonization on Plasma Induced Bio‐Adoptable Polymer Nanocomposites Membranes

25-Nov-2015 | Narendra Kumar Agrawal, Ravi Agarwal, Gautam Aashish Kumar, Jeevanshu Jain, Yogesh Kumar Vijay, Kanti Chand Swami, Macromolecular Symposia, 2015

Summary Polymers are receiving great interest for synthesis of biomedical devices but to use them for any biomedical application they must show biocompatibility. In this work we have enhanced bio‐compatibility of Poly (methyl methacrylate) (PMMA) using TiO2 nanoparticles (NPs) and plasma ...


One pot synthesis of environmentally friendly lignin nanoparticles with compressed liquid carbon dioxide as an antisolvent

25-Nov-2015 | Aye Aye Myint; Hun Wook Lee; Bumjoon Seo; Won-Su Son; Junho Yoon; Tae Jun Yoon; Hee Jeong Park; Jihyun Yu; Jeyong Yo ..., Green Chemistry, 2015

Nanoparticles from the commercial kraft lignin were developed using a facile, one pot green technology of compressed CO2 antisolvent. N,N,-dimethylformamide (DMF) was employed as an organic solvent to prepare the lignin solution. The effects of various process parameters: temperature, pressure, ...


Mesoporous In2O3 nanocrystals: synthesis, characterization and NOx gas sensor at room temperature

25-Nov-2015 | Jun Gao; Hongyuan Wu; Jiao Zhou; Liyuan Yao; Guo Zhang; Shuang Xu; Yu Xie; Li Li; Keying Shi, New Journal of Chemistry, 2015

Mesoporous In2O3 nanocrystals (INS) were successfully prepared using SBA-16 as the template. The INS-3 synthesized by the 0.3 M In(NO3)3 solution had 7.27 nm mean pore size and 82.32 m2•g-1 specific surface area, the mesoporous In2O3 nanocrystals were interconnected In2O3 small-grain (~ 5 nm) ...


Electrum, the Gold–Silver Alloy, from the Bulk Scale to the Nanoscale: Synthesis, Properties, and Segregation Rules

25-Nov-2015 | Grégory Guisbiers; Rubén Mendoza-Cruz; Lourdes Bazán-Díaz; J. Jesús Velázquez-Salazar; Rafael Mendoza-Perez; José An ..., ACS Nano, 2015

The alloy Au–Ag system is an important noble bimetallic phase, both historically (as “Electrum”) and now especially in nanotechnology, as it is applied in catalysis and nanomedicine. To comprehend the structural characteristics and the thermodynamic stability of this alloy, a knowledge of its ...


Kinetic block model of crystal–mother‐phase interface with preferential clustering ‐ single layer case

24-Nov-2015 | Marek Izdebski, Magdalena Włodarska, Crystal Research and Technology, 2015

A new single‐layer kinetic block model of crystal growth is proposed, which takes into account preference for bonds between blocks of the same type over mixed‐type bonds. The obtained parameters describing stable growth conditions were compared with other theoretical models (such as ...


Reversible Photoisomerization of Spiropyran on the Surfaces of Au25 Nanoclusters

23-Nov-2015 | T. Udayabhaskararao, Pintu K. Kundu, Johannes Ahrens, Rafal Klajn, ChemPhysChem, 2015

Abstract Au25 nanoclusters functionalized with a spiropyran molecular switch are synthesized via a ligand‐exchange reaction at low temperature. The resulting nanoclusters are characterized by optical and NMR spectroscopies as well as by mass spectrometry. Spiropyran bound to nanoclusters ...


Preparation and properties of thermoresponsive and conductive composite fibers with core‐sheath structure

23-Nov-2015 | Mei‐Fei Lin, Trong‐Ming Don, Fang‐Tzu Chang, Shih‐Ru Huang, Wen‐Yen Chiu, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT In this research, thermoresponsive and conductive fibers with core‐sheath structure were fabricated by coaxial electrospinning. For preparing the spinning sheath solution, poly‐(N‐isopropylacrylamide‐co‐N‐methylolacrylamide) (PNN) copolymer having thermoresponsive and cross‐linkable ...


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