Temperature-responsive polymer-brush constructed on a glass substrate by atom transfer radical polymerization

Kitano, Hiromi; Kondo, Takuya; Suzuki, Hisatomo; Ohno, Kohji

doi:10.1016/j.jcis.2009.10.004

Cited by 18 publications

(14 citation statements)

References 63 publications

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“…Water-immersed polymer brushes can be sensitive to changes of temperature [5], pH or ionic strength [6], and other stimuli depending on the nature of the polymer: Upon stimulus, the brushes adapt their conformation. Such change can be used to control the surface properties in order to design smart surfaces exhibiting responsive adsorption [7], specific adhesion [8], tunable wettability [9], or changes in lubrication [10]. As a consequence, responsive polymer brushes have numerous applications, including sensors [11], antifouling surfaces [12], or controlled release [13].…”

Section: Introductionmentioning

confidence: 99%

Responsive Adsorption of N-Isopropylacrylamide Based Copolymers on Polymer Brushes

et al. 2020

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We investigate the adsorption of pH- or temperature-responsive polymer systems by ellipsometry and neutron reflectivity. To this end, temperature-responsive poly (N-isopropylacrylamide) (PNIPAM) brushes and pH-responsive poly (acrylic acid) (PAA) brushes have been prepared using the “grafting onto” method to investigate the adsorption process of polymers and its reversibility under controlled environment. To that purpose, macromolecular brushes were designed with various chain lengths and a wide range of grafting density. Below the transition temperature (LCST), the characterization of PNIPAM brushes by neutron reflectivity shows that the swelling behavior of brushes is in good agreement with the scaling models before they collapse above the LCST. The reversible adsorption on PNIPAM brushes was carried out with linear copolymers of N-isopropylacrylamide and acrylic acid, P(NIPAM-co-AA). While these copolymers remain fully soluble in water over the whole range of temperature investigated, a quantitative adsorption driven by solvophobic interactions was shown to proceed only above the LCST of the brush and to be totally reversible upon cooling. Similarly, the pH-responsive adsorption driven by electrostatic interactions on PAA brushes was studied with copolymers of NIPAM and N,N-dimethylaminopropylmethacrylamide, P(NIPAM-co-MADAP). In this case, the adsorption of weak polycations was shown to increase with the ionization of the PAA brush with interactions mainly located in the upper part of the brush at pH 7 and more deeply adsorbed within the brush at pH 9.

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Section: Introductionmentioning

confidence: 99%

Responsive Adsorption of N-Isopropylacrylamide Based Copolymers on Polymer Brushes

et al. 2020

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“…Temperature‐responsive polymers used for preparing thin films are PNIPAM [ 12,21,39–49 ] and copolymers with NIPAM units, [ 50–53 ] poly[2‐(2‐methoxyethoxy)ethyl methacrylate], [ 54,55 ] poly(2‐alkyl‐2‐oxazoline), [ 56 ] poly(vinyl methyl ether), [ 57 ] homopolymers, [ 58 ] and copolymers with N ‐vinylcaprolactam units, [ 59 ] poly[oligo(ethylene glycol) methyl ether methacrylate], [ 60 ] proteins containing elastin sequences, [ 61 ] and poly(glycidyl methyl ether‐ co ‐glycidyl ethyl ether). [ 62,63 ] The polymers can be grafted onto substrates via grafting‐from [ 12,21,39–45,50,54,60 ] and grafting‐to methods, [ 46,51,52,56,62,63 ] photolithography, [ 53 ] and initiated chemical vapor deposition. [ 58 ] A simple grafting‐to strategy consisted in grafting thiol‐ended temperature‐responsive polymers to a gold surface.…”

Section: Temperature‐responsive Materials For Biomedical Applicationsmentioning

confidence: 99%

“…[ 49 ] These thin films were then applied for temperature‐responsive cell culture [ 21,39–45,47–50,53,55,56,61,63 ] and could be potentially applied as recyclable substrates for proteins capture. [ 12,46,51,52,54,62 ]…”

Section: Temperature‐responsive Materials For Biomedical Applicationsmentioning

confidence: 99%

Modulating Protein Corona and Materials–Cell Interactions with Temperature‐Responsive Materials

Prawatborisut

Jiang

Oberländer

et al. 2021

Adv Funct Materials

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Temperature‐responsive polymers display changes of conformation upon a certain threshold temperature, which involves changes of hydrophobicity. Therefore, this property can be exploited to construct materials showing temperature‐dependent interactions with proteins and cells. Indeed, the amounts and types of proteins in the protein corona after incubating temperature‐responsive materials in protein mixtures are regulated by the surface hydrophobicity of materials. This ability is beneficial for designing systems for protein separation or for protecting proteins from thermal stress. Temperature‐responsive materials are also employed for controlling cell adhesion and detachment. The cells are incubated at physiological temperature of mammalians (37 °C) followed by desorption of cell sheets at lower temperature when the substrate is hydrophilic. The authors envision that temperature‐responsive materials will be employed for controlling protein corona of nanocarriers for drug delivery applications.

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“…ATRP is a versatile technique for the controlled polymerization of wide variety of functional monomers, and can be used to synthesis block copolymers since the end groups remain active at the end of the polymerization [22]. ATRP has been used in the surface modification of inorganic particles and substrates [23][24][25][26][27]. Barthelemy et al [24] reported that surface initiated ATRP of styrene was carried out on titanium substrates.…”

Section: Introductionmentioning

confidence: 99%

“…Barthelemy et al [24] reported that surface initiated ATRP of styrene was carried out on titanium substrates. Kitano et al [26] investigated that a polymer brush of 2-(2-methoxyethoxy)ethyl methacrylate (MDM) was grafted to a glass substrate. Compared with ATRP, reverse ATRP has another benefit that components of the initial system are not sensitive to air.…”

Section: Introductionmentioning

confidence: 99%

Preparation of poly(methyl methacrylate) grafted hydroxyapatite nanoparticles via reverse ATRP

Wang¹,

Xiao²,

Huang³

et al. 2011

Journal of Colloid and Interface Science

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Temperature-responsive polymer-brush constructed on a glass substrate by atom transfer radical polymerization

Cited by 18 publications

References 63 publications

Responsive Adsorption of N-Isopropylacrylamide Based Copolymers on Polymer Brushes

Responsive Adsorption of N-Isopropylacrylamide Based Copolymers on Polymer Brushes

Modulating Protein Corona and Materials–Cell Interactions with Temperature‐Responsive Materials

Preparation of poly(methyl methacrylate) grafted hydroxyapatite nanoparticles via reverse ATRP

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