نتایج جستجو برای: vinylpyridine

تعداد نتایج: 563  

2011
Sonia Scorrano Lucia Mergola Roberta Del Sole Giuseppe Vasapollo

Fmoc-3-nitrotyrosine (Fmoc-3-NT) molecularly imprinted polymers (MIPs) were synthesized to understand the influence of several functional monomers on the efficiency of the molecular imprinting process. Acidic, neutral and basic functional monomers, such as acrylic acid (AA), methacrylic acid (MAA), methacrylamide (MAM), 2-vinylpyridine (2-VP), 4-vinylpyridine (4-VP), have been used to synthesiz...

2017
Jose Alonzo Zhenyu Huang Ming Liu Jimmy W. Mays Ryan G. Toomey Mark D. Dadmun

The kinetics of assembly of a series of poly(2-vinylpyridine)-polystyrene-poly(2-vinylpyridine) (PVP-b-PS-b-PVP) triblock copolymers from the selective solvent toluene onto a silicon surface has been studied using phase-modulated ellipsometry. The adsorbed amount and thickness have been determined independently as functions of time. Even though the adsorbed amount as a function of time follows ...

2015
Dajiang Zheng Xinchang Pang Mengye Wang Yanjie He Changjian Lin Zhiqun Lin

Atom transfer radical polymerization (ATRP) of 4-vinylpyridine, t-butyl acrylate, and styrene in sequential order from a β-cyclodextrin core yielded an amphiphilic starlike triblock copolymer, poly(4-vinylpyridine)-block-poly(tbutyl acrylate)-block-polystyrene (P4VP-b-PtBA-b-PS). Subsequently, star-like triblock copolymer composed of inner hydrophilic P4VP blocks, central hydrophobic PtBA block...

2013
Bhavesh Bharatiya Jean-Marc Schumers Elio Poggi Jean-François Gohy

Supramolecular assemblies involving interaction of a small organic molecule, 2-hydroxy-6-Naphthoic acid (HNA), with poly(styrene)-block-poly(4-vinylpyridine) (PS-b-P4VP) diblock copolymers are utilized to obtain micellar structures in solution, nanostructured thin films on flat substrates and, finally, nanoporous thin films. The formation of hydrogen bonds between HNA and the poly(4-vinylpyridi...

2014
Amos Mugweru

DNA hybridization sensors are important for diseases diagnosis. Until now, many approaches have been proposed for the DNA hybridization examination. These include fluorescence based, electrochemical and colorimetric based. Electrochemical hybridization for detection of DNA sequences requires the development of easy to-use, fast, inexpensive, miniaturized analytical devices. In this work, a simp...

Journal: :Talanta 2014
Ruichen Dong Jinhua Li Hua Xiong Wenhui Lu Hailong Peng Lingxin Chen

Thermosensitive molecularly imprinted polymers (T-MIPs) on porous carriers were prepared via the synergy of dual functional monomers of 4-vinylpyridine (VP) and N-isopropylacrylamide (NIPAM), for selective recognition and controlled adsorption and release of bisphenol A (BPA) by the temperature regulation. The porous polymer supporter was synthesized by multistep swelling of polystyrene and the...

Journal: :The Journal of General Physiology 1949
Wilhelm S. Albrink Raymond M. Fuoss

By the addition of n-butyl bromide to a 1:19 copolymer of 4-vinylpyridine and styrene, water-insoluble, strong polyelectrolytes can be prepared. The addition of a hydrocarbon plasticizer permits the casting of flexible films in which large polycations are immobilized but in which bromide ions (or other small anions) are free to move. Electrical measurements on these membranes showed that they c...

2012
B. P. Siddaraju Grzegorz Dutkiewicz H. S. Yathirajan Maciej Kubicki

In the title salt {systematic name: [2-hy-droxy-3-(3-meth-oxy-phen-yl)cyclo-hexyl-meth-yl]dimethyl-aza-nium 2,4,6-trinitro-phenol-ate}, C(16)H(26)NO(2) (+)·C(6)H(2)N(3)O(7) (-), the cation is protonated at the N atom. The cyclo-hexane ring adopts a chair conformation with the hy-droxy substituent in an axial position. In the crystal, O-H⋯O and N-H⋯O hydrogen bonds link the cations and anions in...

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