نتایج جستجو برای: functionalization

تعداد نتایج: 9962  

Journal: :Nanotechnology 2008
Aurélien Crut Daniel A Koster Zhuangxiong Huang Susanne Hage Nynke H Dekker

We report the successful functionalization of optically accessible nanostructures, suitable for single-molecule experiments at physiological substrate concentrations, with polyethylene glycol. Characterization of the coating in terms of roughness, protein repellence, and specific immobilization of DNA is described. We present an application of this technique in the detection of polymerase activ...

2017
Rickdeb Sen Digvijay Gahtory Jorge Escorihuela Judith Firet Sidharam P Pujari Han Zuilhof

Rapid and quantitative click functionalization of surfaces remains an interesting challenge in surface chemistry. In this regard, inverse electron demand Diels-Alder (IEDDA) reactions represent a promising metal-free candidate. Herein, we reveal quantitative surface functionalization within 15 min. Furthermore, we report the comprehensive effects of substrate stereochemistry, surrounding microe...

Journal: :Journal of Synthetic Organic Chemistry, Japan 2005

Journal: :Advanced Materials Interfaces 2023

Surface Functionalization In article number 2202453, Xing Cheng and co-workers demonstrate the high-quality surface functionalization by vapor phase grown self-assembled monolayers (SAMs), which are free of morphological defects could be escalated into wafer scale. Herein, chemical bondings in anchoring groups omitted for better clarification. The carrier mobilities organic thin-film transistor...

2004
C. Munuera E. Barrena

Surface functionalization and its potential application in different fields of science and technology make monolayer organic films attractive candidates as linkages between an underlying substrate and other molecular species. By now, self-assembled monolayers (SAMs) [1,2] generated from either alkanethiols (RSH) or disulfides (RSSR) (R= CnH2n+1), have become a practical tool for homogeneous sur...

2017
Kananat Naksomboon Carolina Valderas Melania Gómez-Martínez Yolanda Álvarez-Casao M. Ángeles Fernández-Ibáñez

Pd(II)-catalyzed C-H functionalization of nondirected arenes has been realized using an inexpensive and easily accessible type of bidentate S,O-ligand. The catalytic system shows high efficiency in the C-H olefination reaction of electron-rich and electron-poor arenes. This methodology is operationally simple, scalable, and can be used in late-stage functionalization of complex molecules. The b...

Journal: :Chemical Society reviews 2015
Wei Zhou Lin Guo

The structure and the composition are two key factors that influence the physical, chemical, and other properties of materials. Correspondingly, structural design and functionalization with inorganic or organic materials provide efficient routes to enhancing some properties. Herein, iron triad nanomaterials, with a wide range of applications in energy, environment and other fields, were chosen ...

2014
Patrick S. Fier John F. Hartwig

We report the late-stage functionalization of multisubstituted pyridines and diazines at the position α to nitrogen. By this process, a series of functional groups and substituents bound to the ring through nitrogen, oxygen, sulfur, or carbon are installed. This functionalization is accomplished by a combination of fluorination and nucleophilic aromatic substitution of the installed fluoride. A...

Journal: :Organic & biomolecular chemistry 2015
Ke Wang Danzhu Wang Kaili Ji Weixuan Chen Yueqin Zheng Chaofeng Dai Binghe Wang

Post-synthesis DNA modification is a very useful method for DNA functionalization. This is achieved by using a modified NTP, which has a handle for further modifications, replacing the corresponding natural NTP in polymerase-catalyzed DNA synthesis. Subsequently, the handle can be used for further functionalization after PCR, preferably through a very fast reaction. Herein we describe polymeras...

2016
Haoxue Han Yong Zhang Nan Wang Majid Kabiri Samani Yuxiang Ni Zainelabideen Y Mijbil Michael Edwards Shiyun Xiong Kimmo Sääskilahti Murali Murugesan Yifeng Fu Lilei Ye Hatef Sadeghi Steven Bailey Yuriy A Kosevich Colin J Lambert Johan Liu Sebastian Volz

The high thermal conductivity of graphene and few-layer graphene undergoes severe degradations through contact with the substrate. Here we show experimentally that the thermal management of a micro heater is substantially improved by introducing alternative heat-escaping channels into a graphene-based film bonded to functionalized graphene oxide through amino-silane molecules. Using a resistanc...

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