scholarly journals Fluorous ‘ponytails’ lead to strong gelators showing thermally induced structure evolution

Soft Matter ◽  
2015 ◽  
Vol 11 (43) ◽  
pp. 8471-8478 ◽  
Author(s):  
Harshita Kumari ◽  
Sarah E. Armitage ◽  
Steven R. Kline ◽  
Krishna K. Damodaran ◽  
Stuart R. Kennedy ◽  
...  
Keyword(s):  
Structure Evolution ◽  
Thermally Induced ◽  
Potential Applications ◽  
Transparent Gels ◽  
Induced Structure

Appending perfluoroalkyl substituents to bis(urea) gelators results in significantly decreased inter-chain interactions with markedly thinner fibres and hence more cross-linked and more transparent gels with potential applications in the crystallisation of fluorinated pharmaceuticals.

Thermally-induced structure evolution in ternary Ti1−xYxB2+Δ films

2019 ◽  
Vol 164 ◽  
pp. 91-95
Author(s):  
M. Mikula ◽  
B. Grančič ◽  
P. Švec ◽  
T. Roch ◽  
M. Truchlý ◽  
...  
Keyword(s):  
Structure Evolution ◽  
Thermally Induced ◽  
Induced Structure

Thermally induced structure evolution on the corrosion behavior of Al-Ni-Y amorphous alloys

2018 ◽  
Vol 144 ◽  
pp. 172-183 ◽  
Author(s):  
L.M. Zhang ◽  
S.D. Zhang ◽  
A.L. Ma ◽  
H.X. Hu ◽  
Y.G. Zheng ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
Amorphous Alloys ◽  
Structure Evolution ◽  
Thermally Induced ◽  
Induced Structure

scholarly journals Recent Progress in the Synthesis and Characterization of Diarylethene-based MOFs

2014 ◽  
Vol 70 (a1) ◽  
pp. C1223-C1223
Author(s):  
Jason Benedict ◽  
Ian Walton ◽  
Dan Patel ◽  
Jordan Cox
Keyword(s):  
Chemical Properties ◽  
Building Blocks ◽  
Synthesis And Characterization ◽  
Next Generation ◽  
Design Synthesis ◽  
Thermally Induced ◽  
Potential Applications ◽  
External Stimuli ◽  
Physical And Chemical

Metal-organic Frameworks (MOFs) remain an extremely active area of research given the wide variety of potential applications and the enormous diversity of structures that can be created from their constituent building blocks. While MOFs are typically employed as passive materials, next-generation materials will exhibit structural and/or electronic changes in response to applied external stimuli including light, charge, and pH. Herein we present recent results in which advanced photochromic diarylethenes are combined with MOFs through covalent and non-covalent methods to create photo-responsive permanently porous crystalline materials. This presentation will describe the design, synthesis, and characterization of next-generation photo-switchable diarylethene based ligands which are subsequently used to photo-responsive MOFs. These UBMOF crystals are, by design, isostructural with previously reported non-photoresponsive frameworks which enables a systematic comparison of their physical and chemical properties. While the photoswitching of the isolated ligand in solution is fully reversible, the cycloreversion reaction is suppressed in the UBMOF single crystalline phase. Spectroscopic evidence for thermally induced cycloreversion will be presented, as well as a detailed analysis addressing the limits of X-ray diffraction techniques applied to these systems.

Influence of molecular weight on polymorphs and temperature-induced structure evolution of regioregular poly(3-dodecylthiophene)

2014 ◽  
Vol 5 (6) ◽  
pp. 1938-1944 ◽  
Author(s):  
Yan Guo ◽  
Lei Wang ◽  
Yuanyuan Han ◽  
Yanhou Geng ◽  
Zhaohui Su
Keyword(s):  
Molecular Weight ◽  
Structure Evolution ◽  
Regioregular Poly ◽  
Induced Structure

Investigation of Phase Transformation and Structure Evolution of Electrospun Copper Oxide Nanofibers during Thermal Annealing

2011 ◽  
Vol 471-472 ◽  
pp. 792-797
Author(s):  
Dariush Jafar Khadem ◽  
Zahira Yaakob ◽  
Samaneh Shahgaldi ◽  
Wan Ramli Wan Daud ◽  
Edy Herianto Majlan
Keyword(s):  
Electron Microscopy ◽  
Copper Oxide ◽  
Sol Gel ◽  
Building Blocks ◽  
Structure Evolution ◽  
Gravimetric Analysis ◽  
Effective Parameters ◽  
Transmission Electron ◽  
Electrospinning Method ◽  
Potential Applications

One-dimensional nanostructures, like nanofibers, nanobelts, nanotubes, nanorods have been regarded as a new class of nanomaterials that have been attracted as the most promising building blocks for verity applications in the last few years. As one type of important structures with intensive research efforts have been devoted to the production and investigation of the metal oxides. Metal oxide nanofibers have different potential to play an essential role in a series of application such as optics, nanoelectronics, catalysts, sensors, storage, optoelectonics, and full cell. Copper oxide nanostructures is a promising semiconductor material with potential applications in photochemical, electrochemical, electrochromic especially in water splitting, catalysts, and fabrication of photovoltaic devices. In this paper electrospinning method via sol-gel was used to fabricate copper oxide nanofibers. Copper oxide nanofibers with different morphology were synthesized by different calcinations temperature. In this paper, effective parameters such as voltage, concentration of precursor and different calcinations temperature were characterized by thermal gravimetric analysis, scanning electron microscopy (SEM), Transmission electron microscopy, x-ray diffraction(XRD), Fourier transform infrared spectroscopy (FTIR) and Brunauer Emmett and Teller (BET).

Structure Evolution of Electrorheological Fluids under Flow Conditions

1999 ◽  
Vol 13 (14n16) ◽  
pp. 1806-1813 ◽  
Author(s):  
X. Tang ◽  
W. H. Li ◽  
X. J. Wang ◽  
P. Q. Zhang
Keyword(s):  
Layer Structure ◽  
Transparent Electrode ◽  
Electrorheological Fluids ◽  
Structure Evolution ◽  
Flow State ◽  
Flow Conditions ◽  
Transition Diagram ◽  
Conducting Film ◽  
Er Fluids ◽  
Induced Structure

Transparent electrode with a conducting film on a glass surface provides us a useful tool to observe the fired-induced structure formation in ER fluids directly under both quiescent and dynamic conditions. In this paper the flow and field-induced structure evolution in ER fluids will be studied in three flow conditions, i.e., (a) ER fluids flowing through a slit channel between two fixed parallel transparent electrodes, which construct a model ER valve, (b) ER fluids being sheared between two concentric transparent electrode tubes, which correspond to a conventional rotary rheometer and (c) ER fluids being sheared between two parallel plate disks, which correspond to an ER clutch. Shear-induced layer structure was observed even when the shear rate reaches 600 s -1. A tentative phase transition diagram between the layer structure and the homogeneous flow state will be given.

Deformation-induced structure evolution of oriented β-polypropylene during uniaxial stretching

Polymer ◽  
2013 ◽  
Vol 54 (3) ◽  
pp. 1259-1268 ◽  
Author(s):  
Rui-Ying Bao ◽  
Zhi-Tian Ding ◽  
Zheng-Ying Liu ◽  
Wei Yang ◽  
Bang-Hu Xie ◽  
...  
Keyword(s):  
Structure Evolution ◽  
Uniaxial Stretching ◽  
Induced Structure

Structural origins, tunable photoluminescence governed by impurities and white-light irradiation in transparent Pr3+:BaTiO3 glass-ceramics

CrystEngComm ◽  
2019 ◽  
Vol 21 (23) ◽  
pp. 3613-3618 ◽  
Author(s):  
Wenqing Xie ◽  
Panpan Li ◽  
Qijing Zhu ◽  
Yun Wang ◽  
Yunjie Zhang ◽  
...  
Keyword(s):  
Active Control ◽  
White Light ◽  
Fluorescence Emission ◽  
Glass Ceramics ◽  
Light Irradiation ◽  
Structure Evolution ◽  
Induced Structure

Study for impurity- and irradiation-induced structure evolution in mono Pr3+:BaTiO3 glass ceramics notably promotes the active control of fluorescence emission.

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