Controlled Growth of PMMA Brushes on Silicon Surfaces at Room Temperature

Ayothi, Ramakrishnan; Dhamodharan, R.; Rühe, Jürgen

doi:10.1002/1521-3927(20020701)23:10/11<612::aid-marc612>3.0.co;2-9

Cited by 107 publications

(127 citation statements)

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“…As shown in Fig. 1, the layer thickness of polyDMAEMA (filled circles) brushes increases steadily with reaction time until about 10 h. Such a loss of linearity has previously been linked to the loss of active chain ends or a reduced rate of monomer diffusion [32].…”

Section: Impact Of Polyquaternary Ammonium Chain Length On Efficacy Omentioning

confidence: 65%

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Permanent, non-leaching antibacterial surfaces—2: How high density cationic surfaces kill bacterial cells

et al. 2007

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Section: Impact Of Polyquaternary Ammonium Chain Length On Efficacy Omentioning

confidence: 65%

“…The chain length of polymers synthesized by ATRP as a function of reaction time for surface-initiated reactions at constant initiator density has been studied in depth [25,[30][31][32][33][34][35]. As shown in Fig.…”

Section: Impact Of Polyquaternary Ammonium Chain Length On Efficacy Omentioning

confidence: 99%

Permanent, non-leaching antibacterial surfaces—2: How high density cationic surfaces kill bacterial cells

et al. 2007

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“…For the poly(benzyl-n-methacrylate-b-styrene) (p(BnMA-b-S)) brushes PBnMA was the attached block (Scheme 2). The PMMA and PBnMA macroinitiators were synthesized from a covalently attached 2-bromoisobutyrate initiator monolayer on the surface of a silicon wafer (Schemes 1 and 2) [48,49]. The initiator monolayer was formed under inert conditions at room temperature, using triethyl amine as a catalyst, toluene as solvent and a monochlorosilane group as the anchoring moiety.…”

Section: The Concept Of Using a Polymer Brush To Move Nanoobjectsmentioning

confidence: 99%

Motion of nano-objects on polymer brushes

Santer

Rühe

2004

Polymer

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104

109

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In this paper we review a new method to move nano-objects on a polymer surface that is made from diblock-copolymer and mixed brushes. Such brush systems consist of polymer chains covalently attached to a surface with high grafting density. If the two polymeric components the brush consists of are incompatible with each other, it shows microphase separation into nanopatterns of well defined size. Such a system possesses the unique property of changing the surface topography in response to different external conditions. Motion of nano objects adsorbed on the brush is induced by having the external conditions and thus the brush topography vary over time. This is shown by studying the distribution of silica nanoparticles adsorbed on several types of brushes while changing the external conditions. We identify parameters required for motion of nano objects, and discuss potential applications of the proposed technique for nano engineering. q

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“…To prepare the homogeneous monolayer of the initiator on the silicon wafers, monochlorosilane, 3-(2-bromoisobutyryl)-decil dimethylchlorosilane (BrC10DMCS), was synthesized as previously described [7]. Silicon wafers with 10 nm of SiO 2 layer were cut into 1.0 cm x 2.0 cm, rinsed by sonication with hexane, ethanol and acetone, and then etched with oxygen plasma treatment (300 W, 10 min).…”

Section: Surface Preparation 221 Immobilization Of Initiator On Silmentioning

confidence: 99%

Effect of Well-Defined Polymer Brush Surface on Adsorption Force of Bovine Serum Albumin

Nakanishi

Inoue

Matsuno

et al. 2010

Trans. Mat. Res. Soc. Japan

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When the materials get contact with blood, non-specific protein adsorption occurs on the surface and the protein adsorption layer induces much severe biological responses including cellular reactions. Therefore, evaluating the first protein adsorption is important for preparing the nonbiofouling surfaces. Atomic force microscopy (AFM) makes it possible to directly measure the forces generated from protein-surface interaction in aqueous media down to few piconewtons range. In this study, we evaluated the adsorption force between bovine serum albumin (BSA)-immobilized AFM cantilever and well-defined polymer brush surface with three kinds of hydrophilic monomers, which are 2-methacryloyloxyethyl phosphorylcholine (MPC), poly (ethylene glycol) methacrylate (PEGMA) and 2-hydroxyethyl methacrylate (HEMA) by surface-initiated atom transfer radical polymerization (SI-ATRP) on initiator-immobilized silicon wafer in buffer solution. We found that the protein adsorption forces depended on the both chemical structure and thickness of the polymer brush layer. In particularly, the thickness was important to reduce protein adsorption force. From these results, thick polymer brush surface is one of the candidate surfaces with nonbiofouling characteristics.

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Controlled Growth of PMMA Brushes on Silicon Surfaces at Room Temperature

Cited by 107 publications

References 0 publications

Permanent, non-leaching antibacterial surfaces—2: How high density cationic surfaces kill bacterial cells

Permanent, non-leaching antibacterial surfaces—2: How high density cationic surfaces kill bacterial cells

Motion of nano-objects on polymer brushes

Effect of Well-Defined Polymer Brush Surface on Adsorption Force of Bovine Serum Albumin

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