Photoresponsive Nanosheets of Polyoxometalates Formed by Controlled Self-Assembly Pathways

2017 ◽  
Vol 56 (11) ◽  
pp. 2974-2978 ◽  
Author(s):  
Keita Ishiba ◽  
Takao Noguchi ◽  
Hiroaki Iguchi ◽  
Masa-aki Morikawa ◽  
Kenji Kaneko ◽  
...  
2022 ◽  
Author(s):  
Mingfei Zhao ◽  
Kacper J. Lachowski ◽  
Shuai Zhang ◽  
Sarah Alamdari ◽  
Janani Sampath ◽  
...  

ACS Nano ◽  
2020 ◽  
Vol 14 (5) ◽  
pp. 5491-5505 ◽  
Author(s):  
Michael A. VandenBerg ◽  
Jugal Kishore Sahoo ◽  
Lei Zou ◽  
William McCarthy ◽  
Matthew J. Webber

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ali Asghar Hakami Zanjani ◽  
Nicholas P. Reynolds ◽  
Afang Zhang ◽  
Tanja Schilling ◽  
Raffaele Mezzenga ◽  
...  

Abstract By combining atomistic and higher-level modelling with solution X-ray diffraction we analyse self-assembly pathways for the IFQINS hexapeptide, a bio-relevant amyloid former derived from human lysozyme. We verify that (at least) two metastable polymorphic structures exist for this system which are substantially different at the atomistic scale, and compare the conditions under which they are kinetically accessible. We further examine the higher-level polymorphism for these systems at the nanometre to micrometre scales, which is manifested in kinetic differences and in shape differences between structures instead of or as well as differences in the small-scale contact topology. Any future design of structure based inhibitors of the IFQINS steric zipper, or of close homologues such as TFQINS which are likely to have similar structures, should take account of this polymorphic assembly.


ACS Nano ◽  
2020 ◽  
Vol 14 (5) ◽  
pp. 5348-5359 ◽  
Author(s):  
Abhishek B. Rao ◽  
James Shaw ◽  
Andreas Neophytou ◽  
Daniel Morphew ◽  
Francesco Sciortino ◽  
...  

2013 ◽  
Vol 135 (50) ◽  
pp. 18722-18725 ◽  
Author(s):  
Franziska Fennel ◽  
Steffen Wolter ◽  
Zengqi Xie ◽  
Per-Arno Plötz ◽  
Oliver Kühn ◽  
...  

2018 ◽  
Vol 6 (26) ◽  
pp. 12759-12767 ◽  
Author(s):  
Guangran Xu ◽  
Rui Si ◽  
Jiayin Liu ◽  
Luyao Zhang ◽  
Xia Gong ◽  
...  

A new directed self-assembly strategy is developed to achieve 3D Pt/Pd nanocrystal superlattices with enhanced electrocatalytic performance for methanol oxidation reaction due to the enriched metallic Pt active sites by appropriate Pd alloying and surface nitrogen doping.


2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Xu Lin ◽  
Mika Suzuki ◽  
Marina Gushiken ◽  
Mitsuaki Yamauchi ◽  
Takashi Karatsu ◽  
...  

2018 ◽  
Vol 56 (5) ◽  
Author(s):  
Trung Dac Nguyen ◽  
Hanh Thi Hong Nguyen ◽  
Minh Duy Le ◽  
Hung Xuan Truong

Next-generation nanotechnology demands new materials and devices that are highly efficient, multifunctional, cost-effective and environmental friendly. The need to accelerate the discovery of new materials therefore becomes more pressing than ever. Over the past two decades, self-assembly techniques have provided a promising means for fabricating nanomaterials, where the underlying structures are formed by the self-organization of building blocks, such as nanoparticles, colloids and block copolymers, in a similar fashion to biological systems. The fundamental challenges to these bottom techniques are to design suitable assembling units, to tailor their interaction rules and to identify possible assembly pathways. In this report, we will demonstrate how computer simulation has been a powerful tool for tackling these fundamental challenges, providing not only profound insights into the complex interplay between the building blocks’ geometry and their interactions, but also valuable predictions to inspire on-going and future experiment. Theoretical background of self-assembly studies; simulation methods and data analysis tools commonly used will also be discussed.


2021 ◽  
Author(s):  
Anne-Déborah C. Nguindjel ◽  
Peter A. Korevaar

Out-of-equilibrium chemical systems, comprising reaction networks and molecular self-assembly pathways, rely on the delivery of reagents. Rather than via external flow, diffusion or convection, we aim at self-sustained reagent delivery. Therefore, we explore how the coupling of Marangoni flow with chemical reactions can generate self-sustained flows, driven by said chemical reactions, and – in turn – sustained by the delivery of reagents for this reaction. We combine a photoacid generator with a pH-responsive surfactant, such that local UV exposure decreases the pH, increases the surface tension and triggers the emergence of a Marangoni flow. We study the impact of reagent concentrations and identify threshold conditions at which flow can emerge. Surprisingly, we unraveled an antagonistic influence of the reagents on key features of the flow such as interfacial velocity and duration, and rationalize these findings via a kinetic model. Our study displays the potential of reaction-driven flow to establish autonomous control in fuel delivery of out-of-equilibrium systems.


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