نتایج جستجو برای: c20 fullerenes

تعداد نتایج: 5000  

2016
Junling Ren Dan Zhang Yujie Liu Ruiqing Zhang Huiling Fang Shuai Guo Dan Zhou Mo Zhang Yupin Xu Ling Qiu Zhili Li

In this study, we have employed graphene oxide as a matrix to simultaneously and directly quantify serum nonesterified and esterified fatty acids (FAs) using matrix-assisted laser/desorption ionization-Fourier transform ion cyclotron resonance mass spectrometry (MALDI-FTICR MS). Twelve serum nonesterified FAs combined with their individual esterified FAs (i.e., C16:0, C16:1, C18:0, C18:1, C18:2...

2006
SEEMA THAKRAL R. M. MEHTA

Ever since their experimental discovery in 1985, fullerenes have attracted considerable attention in different fields of sciences. Investigations of chemical, physical and biological properties of fullerenes have yielded promising information. Their unique carbon cage structure coupled with immense scope for derivatization makes fullerenes a potential therapeutic agent. Henceforth various poten...

در این پژوهش، خواص توان گرمایی مولکول فولرن C20 و اثر افزایش تعداد مولکول با استفاده از نظریه تابعی چگالی و فرموﻝبندی تابع گرین در رژیم پاسخ خطی بررسی شده است. ما سه ارایش متفاوت: Au- C20 - Au, Au- (C20)2- Au وسرانجامAu- (C20)3 – Au را در نظر می گیریم. محاسبات نشان ﻣﻲدهد که با افزایش تعداد مولکول فولرن C20 توان گرمایی افزایش ﻣﻲیابد. بعلاوه، علامت ضریب سیبک به طول وابسته است و ﻣﻲتواند برای تعداد...

2009
Ranga Partha Jodie L Conyers

Since their discovery in 1985, fullerenes have been investigated extensively due to their unique physical and chemical properties. In recent years, studies on functionalized fullerenes for various applications in the field of biomedical sciences have seen a significant increase. The ultimate goal is towards employing these functionalized fullerenes in the diagnosis and therapy of human diseases...

Journal: :Bioorganic & medicinal chemistry 1996
A W Jensen S R Wilson D I Schuster

Thus far, development of applications of fullerenes in biology has been hampered by the poor water solubility of fullerenes. In spite of such concerns, fullerenes have proved useful for a wide variety of biological applications. As derivatized and underivatized fullerenes continue to become increasingly available, additional applications and further development of those discussed in this articl...

2012
LENE B. ODDERSHEDE Niels Bohr

Submitted for the MAR08 Meeting of The American Physical Society Fullerenes Can Induce Toxic Physical Changes of DNA FABIAN CZERWINSKI, LENE B. ODDERSHEDE, Niels Bohr Institute, Copenhagen, Denmark — Fullerenes are fascinating symmetric carbon nanostructures. Nowadays, they are widely used because of their characteristic physical and chemical properties. Until now research has mainly been focus...

2011
Ernesto Estrada Naomichi Hatano Adelio R. Matamala

The recently developed idea of analyzing complex networks in terms of node displacement due to vibration (Estrada and Hatano, Chem Phys Lett 486:166–170, 2010a) is applied to fullerenes. The fact that the ramafullerenes (fullerenes of Ramanujan graphs) are limited to fullerenes with relatively small number of C atoms is explained from the point of view of the node displacement. The node displac...

Fullerene chemistry is nowadays a well-established field of both theoretical and experimental investigations‎. This study considers the symmetry of small fullerenes cage C24 and C28‎. ‎Using PM3 program for C24 and C28 fullerenes, Oh and Td symmetry were confirmed, respectively‎. ‎ The mentioned algorithm to compute the automorphism group of these fullerenes with connectivity and geometry of th...

Journal: :Organic & biomolecular chemistry 2015
Weibo Yan Stefan M Seifermann Philippe Pierrat Stefan Bräse

Highly functionalized fullerenes can be efficiently constructed by various techniques. However, the challenge is to synthesize highly symmetrical fullerenes. Recently, a number of X-ray structures have been disclosed showing the high symmetry of substituted fullerenes. By reviewing the major types of multi functionalized fullerenes through selected examples with a link to the structural assignm...

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