Moiré patterns and carbon nanotube sorting

Nano Futures ◽  
2022 ◽  
Author(s):  
Olga Konevtsova ◽  
Daria S. Roshal ◽  
Sergei B. Rochal

Abstract Moiré patterns (MPs), arising from the superposition of two lattices with close periods, are tightly related to the physicochemical properties of bilayer nanostructures. Here, we develop the theory of complex MPs emerging in twisted bilayer graphene and planar nets of double-walled nanotubes at significant relative twist and/or deformation of layers. The proposed theory clarifies the physicochemical regularities arising at sorting of single-walled carbon nanotubes (SWCNTs) by organic molecules, which self-assemble in regular coatings on both the tubes and planar graphene. We introduce and consider an outer tubular virtual lattice that is a parent structure for the deposited coating and due to this fact, its existence is crucial for the coating formation. As we show, such outer lattices exist only for successfully sorted SWCNTs and the superposition between the outer lattice and SWCNT forms a specific long-period MP. We explain known experimental results of SWCNT sorting by molecules of flavin group, poly(9,9-dioctylfluorene-2,7-diyl) (PFO), and poly [(m-phenylenevinylene)-alt-(p-phenylenevinylene)] (PmPV). Also, our approach points out other organic molecules and polymers suitable for effective CNT sorting.

2008 ◽  
Vol 8 (7) ◽  
pp. 3351-3356 ◽  
Author(s):  
Indresh Kumar ◽  
Sravendra Rana ◽  
Chandrashakher V. Rode ◽  
Jae Whan Cho

Single-walled carbon nanotubes (SWCNTs) were chemically functionalized with amino acid-based moieties. The covalent functionalization of alkyne-derived SWCNTs with well defined azides derived from amino acids was accomplished through Cu(I)-catalyzed Huisgen [3 + 2] dipolar cycloaddition click chemistry. Transmission electron microscopy, Raman spectroscopy, and infrared spectroscopic measurements confirmed the functionalization of SWCNTs by organic molecules derived from amino acids, and the resulting material showed some good solubility in the organic solvents such as tetrahydrofuran, CH2Cl2, and CHCl3.


2007 ◽  
Vol 129 (36) ◽  
pp. 10966-10967 ◽  
Author(s):  
Sung You Hong ◽  
Gerard Tobias ◽  
Belén Ballesteros ◽  
Farid El Oualid ◽  
James C. Errey ◽  
...  

Author(s):  
Yongjun Jeon ◽  
Jae Gyu Jang ◽  
Sung Hyun Kim ◽  
Jong-In Hong

Twisted small organic molecules (SOMs) enhance the thermoelectric performance of single-walled carbon nanotubes (SWCNTs)/SOM hybrid films by dramatically increasing the Seebeck coefficient and minimising the inevitable reduction in electrical conductivity....


Author(s):  
Ana Cadena ◽  
Bea Botka ◽  
Katalin Kamarás

Abstract Hybrid materials based on carbon nanotubes continue to attract considerable interest due to the broad variety of both the cages outside and the encapsulated species inside. This review focuses on organic molecules as guests in single-walled carbon nanotube hosts. The majority of results presented here have been attained in recent years by various methods of optical spectroscopy, complemented by transmission electron microscopy. These spectroscopic methods yield information on electronic structure, as well as dynamic processes as structural transformations and chemical reactions.


NANO ◽  
2012 ◽  
Vol 07 (01) ◽  
pp. 1130001 ◽  
Author(s):  
YUTAKA MAEDA ◽  
MICHIO YAMADA ◽  
TADASHI HASEGAWA ◽  
TAKESHI AKASAKA ◽  
JING LU ◽  
...  

Single-walled carbon nanotubes (SWNTs) have excellent mechanical and electrical properties that have led to the proposal of many potential applications. However, SWNTs are typically grown as bundles of metallic and semiconducting tubes. This prevents their widespread application. Therefore, it is technologically critical to disperse and purify SWNTs and separate metallic and semiconducting SWNTs effectively. Recent progress and advances have been made on dispersion, separation, assemble, and control of electronic property of SWNTs by the interaction of organic molecules. This paper presents a brief review of the interaction of SWNTs with amine.


2013 ◽  
Vol 51 (2) ◽  
pp. 137-144
Author(s):  
Naesung Lee ◽  
Jeung Choon Goak ◽  
Tae Yang Kim ◽  
Jongwan Jung ◽  
Young-Soo Seo ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document