The supramolecular design of low-dimensional carbon nano-hybrids encoding a polyoxometalate-bis-pyrene tweezer

2014 ◽  
Vol 50 (38) ◽  
pp. 4881-4883 ◽  
Author(s):  
Gloria Modugno ◽  
Zois Syrgiannis ◽  
Aurelio Bonasera ◽  
Mauro Carraro ◽  
Gabriele Giancane ◽  
...  
Keyword(s):  
Self Assembly ◽  
Carbon Nanostructures ◽  
Micro Scale ◽  
Scale Yielding ◽  
Low Dimensional ◽  
Guest Chemistry

The host–guest chemistry of the POM-tweezer drives self-assembly with carbon nanostructures in the nano- to micro-scale yielding 0-, 1-, and 2-D nano-hybrids.

A Bottom-Up Approach to Solution-Processed, Atomically Precise Graphitic Cylinders on Surfaces

2018 ◽  
Author(s):  
Erik Leonhardt ◽  
Jeff M. Van Raden ◽  
David Miller ◽  
Lev N. Zakharov ◽  
Benjamin Aleman ◽  
...  
Keyword(s):  
Self Assembly ◽  
Carbon Nanostructures ◽  
Carbon Nanomaterials ◽  
Circle Packing ◽  
Pyrolytic Graphite ◽  
Building Blocks ◽  
Bottom Up ◽  
Casting Technique ◽  
New Class ◽  
Solution Casting Technique

Extended carbon nanostructures, such as carbon nanotubes (CNTs), exhibit remarkable properties but are difficult to synthesize uniformly. Herein, we present a new class of carbon nanomaterials constructed via the bottom-up self-assembly of cylindrical, atomically-precise small molecules. Guided by supramolecular design principles and circle packing theory, we have designed and synthesized a fluorinated nanohoop that, in the solid-state, self-assembles into nanotube-like arrays with channel diameters of precisely 1.63 nm. A mild solution-casting technique is then used to construct vertical “forests” of these arrays on a highly-ordered pyrolytic graphite (HOPG) surface through epitaxial growth. Furthermore, we show that a basic property of nanohoops, fluorescence, is readily transferred to the bulk phase, implying that the properties of these materials can be directly altered via precise functionalization of their nanohoop building blocks. The strategy presented is expected to have broader applications in the development of new graphitic nanomaterials with π-rich cavities reminiscent of CNTs.

Micro-scale hollow nanosphere as highly efficient ORR electrocatalyst derived from the self-assembly of triblock copolymer (L64)

Ionics ◽  
2021 ◽  
Vol 27 (4) ◽  
pp. 1611-1618
Author(s):  
Xiaowen Ge ◽  
Xiaomei Du ◽  
Yin Sun ◽  
Junjie Zhang ◽  
Zhongyu Qiu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Triblock Copolymer ◽  
The Self ◽  
Hollow Nanosphere ◽  
Micro Scale ◽  
Highly Efficient

scholarly journals Investigation of a Three-Dimensional Micro-Scale Sensing System Based on a Tapered Self-Assembly Four-Cores Fiber Bragg Grating Probe

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2824 ◽  
Author(s):  
Kunpeng Feng ◽  
Jiwen Cui ◽  
Xun Sun ◽  
Hong Dang ◽  
Tangjun Shi ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Self Assembly ◽  
Three Dimensional ◽  
Critical Length ◽  
Bragg Grating ◽  
Manufacturing Method ◽  
Micro Scale ◽  
Sensing Model ◽  
Shift Point ◽  
Better Than

Three-dimensional micro-scale sensors are in high demand in the fields of metrology, precision manufacturing and industry inspection. To extend the minimum measurable dimension and enhance the accuracy, a tapered four-cores fiber Bragg grating (FBG) probe is proposed. The sensing model is built to investigate the micro-scale sensing characteristics of this method and the design of the tapered stylus is found to influence the accuracy. Therefore, a π/2 phase-shift point is introduced into the FBGs comprised in the probe to suppress spectrum distortion and improve accuracy. Then, the manufacturing method based on capillary self-assembly is proposed to form the probe and the critical length to form a square array for four cylindrical fibers is verified to be effective for the tapered fibers. Experimental results indicate that the design of the tapered stylus can extend the minimum measurable dimension by twofold and has nearly no influence on its sensitivity. The three-dimensional measurement repeatability is better than 31.1 nm and the stability is better than 200 nm within once measuring process. Furthermore, the measurement precision of the three-dimensional micro-scale measurement results is less than 150 nm. It would be widely used in measuring micro-scale features for industry inspection or metrology.

Controlled Self-Assembly of Low-Dimensional Alq3 Nanostructures from 1D Nanowires to 2D Plates via Intermolecular Interactions

2018 ◽  
Vol 14 (2) ◽  
pp. 181-186 ◽  
Author(s):  
Jianmin Gu ◽  
Baipeng Yin ◽  
Shaoyan Fu ◽  
Cuihong Jin ◽  
Xin Liu ◽  
...  
Keyword(s):  
Intermolecular Interactions ◽  
Self Assembly ◽  
Low Dimensional

Porphyrin cage compounds based on glycoluril – from enzyme mimics to functional molecular machines

2019 ◽  
Vol 55 (65) ◽  
pp. 9590-9605 ◽  
Author(s):  
Johannes A. A. W. Elemans ◽  
Roeland J. M. Nolte
Keyword(s):  
Self Assembly ◽  
Molecular Machines ◽  
Enzyme Mimics ◽  
Cage Compounds ◽  
Feature Article ◽  
Biomimetic Catalysis ◽  
Guest Chemistry

This Feature Article gives an overview of the application of glycoluril-based porphyrin cage compounds in host–guest chemistry, allosterically controlled self-assembly, biomimetic catalysis, and polymer encoding.

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