نتایج جستجو برای: functionalize

تعداد نتایج: 592  

Journal: :The journal of physical chemistry letters 2014
Jukka Hassinen Petri Pulkkinen Elina Kalenius Thalappil Pradeep Heikki Tenhu Hannu Häkkinen Robin H A Ras

Although various complex, bulky ligands have been used to functionalize plasmonic gold nanoparticles, introducing them to small, atomically precise gold clusters is not trivial. Here, we demonstrate a simple one-pot procedure to synthesize fluorescent magic number Au25 clusters carrying controlled amounts of bulky calix[4]arene functionalities. These clusters are obtained from a synthesis feed ...

2008
Peng Cheng Ma Ben Zhong Tang Jang-Kyo Kim

This paper proposes a novel chemo-mechanical method to in-situ functionalize carbon nanotubes (CNTs). Ball milling in the presence of ammonium bicarbonate allowed the introduction of amine and amide groups onto the surface of CNTs, resulting in the conversion of the semiconducting behavior of CNTs from p-type to n-type. The corresponding electrical conductivity of CNT increased gradually with b...

Journal: :Angewandte Chemie 2016
Ivan Buslov Fang Song Xile Hu

The first efficient and non-precious nanoparticle catalyst for alkene hydrosilylation with commercially relevant tertiary silanes has been developed. The nickel nanoparticle catalyst was prepared in situ from a simple nickel alkoxide precatalyst Ni(O(t) Bu)2 ⋅x KCl. The catalyst exhibits high activity for anti-Markovnikov hydrosilylation of unactivated terminal alkenes and isomerizing hydrosily...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2015
hassan keypour mohammad noroozi alimorad rashidi masoud shariati rad

in this study fullerene functionalized using oleum (h2so4·so3), followed by the hydrolysis of the intermediate cyclosulfated fullerene as well as  an oxidizing agent was employed to functionalize the fullerenes. ruthenium was then added by the impregnation method or deposited on the functionalized fullerene. subsequent to this step, response surface methodology (rsm) was used to study the cumul...

Journal: :Chemical communications 2009
Jianwei Fu Xiaobin Huang Yawen Huang Jiawei Zhang Xiaozhen Tang

This report demonstrates a simple and highly effective one-pot noncovalent method for the preparation of soluble MWCNT-poly(cyclotriphosphazene-co-4,4'-sulfonyldiphenol) nanocables based on a hard template mechanism.

Journal: :Lab on a chip 2013
Thomas Grevesse Marie Versaevel Géraldine Circelli Sylvain Desprez Sylvain Gabriele

Physico-chemical and biochemical factors in the local cellular microenvironment are known to impact on multiple aspects of cell behaviour through specific signal pathways. These mechanotransduction cues can couple each other to regulate cell fate, and it remains unclear whether mechanotransduction in different contexts shares common mechanisms. Undoubtedly, a challenge will involve the further ...

Journal: :ACS nano 2013
Cartney E Smith Artem Shkumatov Sarah G Withers Binxia Yang James F Glockner Sanjay Misra Edward J Roy Chun-Ho Wong Steven C Zimmerman Hyunjoon Kong

Common methods of loading magnetic resonance imaging (MRI) contrast agents into nanoparticles often suffer from challenges related to particle formation, complex chemical modification/purification steps, and reduced contrast efficiency. This study presents a simple, yet advanced process to address these issues by loading gadolinium, an MRI contrast agent, exclusively on a liposome surface using...

2012
Xusheng Du Hong-Yuan Liu Guipeng Cai Yiu-Wing Mai Avinash Baji

A facile approach to functionalize carbon nanofibers [CNFs] with nanostructured polyaniline was developed via in situ mechanochemical polymerization of polyaniline in the presence of chemically treated CNFs. The nanostructured polyaniline grafting on the CNF was mainly in a form of branched nanofibers as well as rough nanolayers. The good dispersibility and processability of the hybrid nanocomp...

Journal: :Biomaterials science 2014
Alessandro Polini Jianglin Wang Hao Bai Ye Zhu Antoni P Tomsia Chuanbin Mao

Hydroxyapatite (HA), the principal component of bone mineral, shows osteoconductive properties when employed for coating metal implants as well as scaffold materials in synthetic bone grafts. With the goal of providing this material with osteoinductive capabilities to promote faster bone regeneration, we show an easy approach to functionalize HA implant surfaces and enrich them with osteoinduct...

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