نتایج جستجو برای: fullerene graph

تعداد نتایج: 202582  

Journal: :The journal of physical chemistry. B 2015
Chun I Wang Chi C Hua

The ability to correlate fullerene solubility with experimentally or computationally accessible parameters can significantly facilitate nanotechnology nowadays for a wide range of applications, while providing crucial insight into optimum design of future fullerene species. To date, there has been no single relationship that satisfactorily describes the existing data clearly manifesting the eff...

Journal: :Nature nanotechnology 2008
Jirasak Wong-Ekkabut Svetlana Baoukina Wannapong Triampo I-Ming Tang D Peter Tieleman Luca Monticelli

Recent toxicology studies suggest that nanosized aggregates of fullerene molecules can enter cells and alter their functions, and also cross the blood-brain barrier. However, the mechanisms by which fullerenes penetrate and disrupt cell membranes are still poorly understood. Here we use computer simulations to explore the translocation of fullerene clusters through a model lipid membrane and th...

2014
Xinlin Yang Ali Ebrahimi Jie Li Quanjun Cui

Fullerenes are among the strongest antioxidants and are characterized as "radical sponges." The research on biomedicinal applications of fullerenes has achieved significant progress since the landmark publication by Friedman et al in 1993. Fullerene-biomolecule conjugates have become an important area of research during the past 2 decades. By a thorough literature search, we attempt to update t...

Journal: :Chemical communications 2004
Hyun Jung Kim Ki-Min Park Tae Kyu Ahn Seong Keun Kim Kil Suk Kim Dongho Kim Hee-Joon Kim

A novel fullerene-porphyrin-fullerene triad linked by the axial coordination of tin(IV) porphyrin is reported, exhibiting strong pi-pi interactions between the tin porphyrin and fullerene moieties owing to their close proximity.

2014
Maria A Lebedeva Thomas W Chamberlain E Stephen Davies Bradley E Thomas Martin Schröder Andrei N Khlobystov

A series of six fullerene-linker-fullerene triads have been prepared by the stepwise addition of the fullerene cages to bridging moieties thus allowing the systematic variation of fullerene cage (C60 or C70) and linker (oxalate, acetate or terephthalate) and enabling precise control over the inter-fullerene separation. The fullerene triads exhibit good solubility in common organic solvents, hav...

1999
Patrick W. Fowler Kevin M. Rogers Ken R. Somers Alessandro Troisi

In the search for simple rationalisations of fullerene reactivity, several concepts taken from graph theory have proved useful. One is the independence number, which gives a mathematical embodiment to the chemical notion of steric strain. The independence number, I(G), of a graph G is the maximum number of its vertices that can be marked simultaneously such that no two marked vertices are adjac...

2005
K Balasubramanian

Experimental and theoretical studies on fullerene cages are the topic of several investigations in recent years [ 1-l 11. Since the chemistry of fullerenes is increasingly becoming important and theoretical studies of these cages are on the increase it is necessary to have several mathematical procedures for the study of topological properties of these cages. Topological, graph theoretical and ...

2015
Francisco Javier Sánchez-Bernabe Javier Salcedo

A Fullerene with pentagons, hexagons, and heptagons is considered. The number of carbons is 458. It contains 8 heptagonal rings, 21 pentagons, and 212 hexagons. Keywords-component; fullerene; heptagon; pentagon adjacency penalty rule; fullerene with many carbons

1999
Jorma Joutsensaari

Aerosol synthesis methods for the production of nanostructured fullerene particles have been developed. The nanostructured, ultrafine fullerene particles were produced by vapor condensation and aerosol droplet drying and crystallization methods in tubular laminar flow reactors. The formation mechanisms were studied by measuring particle-size distributions is the gas phase. High-resolution scann...

1999
X. Linda Chen Samson A. Jenekhe

Solubilization and encapsulation of fullerenes C60 and C70 by ultralarge hollow micelles formed by rod-coil diblock copolymers and characterization of the resulting self-organized fullerene-block copolymer assemblies are reported. The solubilization capacity of each fullerene in poly(phenylquinoline)-blockpolystyrene (PPQ-PS) micelles in binary solvents, trifluoroacetic acid/dichloromethane, an...

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