نتایج جستجو برای: functionalization multi

تعداد نتایج: 474380  

Journal: :ChemElectroChem 2021

The Cover Feature illustrates FeCo oxide nanoparticles supported on heteroatom-functionalized multi-walled carbon nanotubes as a bifunctional catalyst for the oxygen reduction and evolution reactions. Nitrogen functionalization of allows controlling nanoparticle dispersion localization, while optimal degree nitrogen doping results in an enhancement electrical conductivity, which together boost ...

Journal: :Chemistry: A European Journal 2021

The latest applications of chemodynamic therapy (CDT) combined with multifunctional nanomaterials in tumor treatment are summarized. Nanomaterials different characteristics can optimize the Fenton reaction and Fenton-like to make CDT produce distinctive enhancement effects. combination nanomaterials, various other therapies would promote multi-functionalization system, thereby enhancing antican...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده شیمی 1391

چکیده در بخش اول این پروژه میکروکره های پلی استایرن بوسیله پلیمرشدن توزیعی مقادیر مختلف استایرن در مخلوط آب و اتانول، از طریق یک فرایند تک مرحله ای تهیه شد. در قسمت دوم از این بخش، برای تهیه میکروکره های هیبریدی با نانوذرات اکسیدآهن در حدود 100-50 نانومتر بوسیله روش دانه گذاری، ابتدا سطح میکروکره های پلی استایرن بوسیله گروه سولفونیک اسید عامل دار شد و سپس بوسیله واکنش مستقیم گروه –so3h سطح پلی...

Journal: :the iranian journal of pharmaceutical research 0
naghmeh hadidi department of pharmaceutics, school of pharmacy, shaheed beheshti university of medical sciences, tehran, iran. seyed farshad hosseini shirazi department of pharmacology & toxicology, school of pharmacy, shaheed beheshti university of medical sciences, tehran, iran. farzad kobarfard department of pharmaceutical chemistry, school of pharmacy, shaheed beheshti university of medical sciences, tehran, iran. nastaran nafissi-varcheh department of pharmaceutical biotechnology, school of pharmacy, shaheed beheshti university of medical sciences, tehran, iran. reza aboofazeli department of pharmaceutics, school of pharmacy, shaheed beheshti university of medical sciences, tehran, iran.

among the numerous nanosized drug delivery systems currently under investigation, carbon nanotubes (cnts), regardless of being single or multiple-walled, offer several advantages and are considered as promising candidates for drug targeting. despite the valuable potentials of cnts in drug delivery, their toxicity still remains an important issue. after the pegylation of single-walled cnts (swcn...

2014
Youqing Ye Harry C. Dorn Harry W. Gibson Lesley E. LaConte

Gadolinium endohedral metallofullerenes (EMFs) have shown the potential to become next generation magnetic resonance imaging (MRI) contrast agents due to their significantly improved efficiency and safety, as well as multi-day body retention which allows for a longer surgery and observation compared to current contrast agents. In Chapter 1, I have reviewed the development of gadolinium EMF base...

Journal: :Biosensors & bioelectronics 2011
Shiang-Jie Yen Wei-Lun Hsu Yung-Chan Chen Huan-Chieh Su Yen-Chung Chang Hsin Chen Shih-Rung Yeh Tri-Rung Yew

This paper reports the success of amino-functionalization on multi-walled carbon nanotubes (MWCNTs) to promote neuronal cells growth on MWCNT electrode for extracellular recording, attributed to the formation of positive charge of NH(2) molecules on their surfaces. Besides, the surface of MWCNT electrode becomes hydrophilic after amino-functionalization (AF-MWCNTs) which can enhance electrical ...

2016
Manfredi Allegri Dimitrios K. Perivoliotis Massimiliano G. Bianchi Martina Chiu Alessandra Pagliaro Malamatenia A. Koklioti Aikaterini-Flora A. Trompeta Enrico Bergamaschi Ovidio Bussolati Constantinos A. Charitidis

The elucidation of toxicity determinants of multi-walled carbon nanotubes (MWCNT) is still incomplete. Functionalization with carboxyl groups is, however, commonly used to mitigate MWCNT toxicity, although the rationale for the mitigating effect has not been fully clarified yet. In this work, two optimized chemical vapor deposition methods were employed to obtain MWCNT of comparable length but ...

2015
Ahmad Amiri Rad Sadri Goodarz Ahmadi B. T. Chew S. N. Kazi Mehdi Shanbedi Maryam Sadat Alehashem

In order to improve the dispersibility of multi-walled carbon nanotubes (MWCNT) in aqueous media, MWCNT were functionalized with tetrahydrofurfuryl polyethylene glycol (TFPEG) in a one-pot, fast and environmentally friendly method. To reduce defects and eliminate the acid-treatment stage, an electrophonic addition reaction under microwave irradiation was employed. Surface functionalization was ...

Journal: :Nanoscale 2016
Cyrill Bussy Caroline Hadad Maurizio Prato Alberto Bianco Kostas Kostarelos

Chemically functionalized carbon nanotubes (f-CNTs) have been used in proof-of-concept studies to alleviate debilitating neurological conditions. Previous in vivo observations in brain tissue have suggested that microglia - acting as resident macrophages of the brain - play a critical role in the internalization of f-CNTs and their partial in situ biodegradation following a stereotactic adminis...

2013
Xingmao Ma Sheikh Uddin

The strong affinity of carbon nanotubes (CNTs) to environmental contaminants has raised serious concern that CNTs may function as a carrier of environmental pollutants and lead to contamination in places where the environmental pollutants are not expected. However, this concern will not be realized until the contaminants are desorbed from CNTs. It is well recognized that the desorption of envir...

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