<i>50th Anniversary Perspective</i>: Polymer Brushes: Novel Surfaces for Future Materials

Chen, Wei‐Liang; Cordero, Roselynn; Tran, Hai; Ober, Christopher K.

doi:10.1021/acs.macromol.7b00450

Cited by 402 publications

(445 citation statements)

References 286 publications

(640 reference statements)

Supporting

Mentioning

436

Contrasting

Order By: Relevance

“…[32][33][34][35] However, concentrated polymer brushes with high are unexplored and may exhibit new functions. [32][33][34][35] However, concentrated polymer brushes with high are unexplored and may exhibit new functions.…”

Section: Angewandte Chemiementioning

confidence: 99%

Polymer Dispersity Control by Organocatalyzed Living Radical Polymerization

2019

View full text Add to dashboard Cite

Molecular weight distribution of polymers,t ermed dispersity (), is af undamental parameter for determining polymer material properties.T his paper reports an ovel approach for controlling by exploiting at emperatureselective radical generation in organocatalyzed living radical polymerization. The polymers with tailored were synthesized in ab atch system without the assistance of an external pump.Aunique aspect of this approach is that was tuneable from 1.11 to 1.50 in any segment in diblock, triblock, and multiblock copolymers and in any form of star and brush polymer without segmental or topological restriction. This approach is amenable to various monomers and free from metals and thus attractive for applications.T he approach also generated polymer brushes on surfaces with tailored .A n interesting finding was that the polymer brushes exhibited unique interaction with external molecules,d epending on the value.Molecular weight distribution of polymers,t ermed dispersity ( = M w /M n ), is afundamental parameter in determining polymer properties such as processability,viscoelasticity,and self-assembly behaviors,w here M w and M n are the weightand number-average molecular weights,r espectively. [1][2][3][4][5][6] Living radical polymerization (LRP) facilitates the synthesis of polymers with small values,a sw ell as pre-determined molecular weights and sophisticated architectures. [7][8][9][10][11][12] However,p olymers with large values are occasionally desired for improved physical properties such as miscibility and processability,a nd the manipulation of in LRP is an important topic but still challenging. Several approaches have been developed to manipulate values.Blending polymers with different molecular weights is often applied. [13][14][15] Thep olymers need to be prepared in multiple independent runs,a nd the blended polymers often have multimodal molecular weight distribution. By optimizing the polymerization conditions such as catalyst loadings, initiators,temperatures,and additional chain-transfer agents, the was modulated at 1.1-2.0 in LRP. [16][17][18] However,t he attained large usually arose from inefficient control in LRP. Thus,t he obtained polymers hardly undergo further chain extension. Recently,F ors et al. elegantly varied and molecular weight distribution "shapes" by metering the addition of an initiator using af eeding pump in anionic and nitroxide-mediated polymerizations. [19][20][21][22] This approach was applied to homopolymers and the first segment of block copolymers but not to the other segments of block copolymers.B oyer et al. recently metered the addition of the polymeric initiator (macro-initiator) in ap hotocontrolled LRP and successfully obtained block copolymers with tailored in the second segment. [23,24] However, the pumpassisted method is always inapplicable to heterogeneous systems,s uch as polymer brush synthesis from solid substrates,a nd thus limits applications.We have developed an organocatalyzed LRP,t hat is, reversible complexation mediated polymerization (RCMP) t...

show abstract

Section: Angewandte Chemiementioning

confidence: 99%

Polymer Dispersity Control by Organocatalyzed Living Radical Polymerization

2019

View full text Add to dashboard Cite

show abstract

“…End anchoring of polymer chains at a high density to a surface to form polymer brushes is a powerful way to prepare functional coatings . Fluorescent dye‐labeled polymer brushes have been prepared and utilized in ion sensing and organic light emitting diode (OLED) development or in studying the degrafting kinetics of brushes .…”

Section: Introductionmentioning

confidence: 99%

Chain End‐Functionalized Polymer Brushes with Switchable Fluorescence Response

Taş

Kopeć

Pol

et al. 2019

Macro Chemistry & Physics

View full text Add to dashboard Cite

Herein is described the switchable fluorescence response of poly(methyl methacrylate) (PMMA) brushes. Chain end fluorescein labeled PMMA brushes are prepared by combining surface‐initiated atom transfer radical polymerization (SI‐ATRP) with a copper‐catalyzed alkyne‐azide cycloaddition (CuAAC) click reaction. Successful attachment of fluorescein is confirmed by measuring fluorescence of the as‐prepared films. Utilizing co‐solvency of PMMA in isopropanol‐water mixtures, responsive behavior of the end‐functionalized brushes is demonstrated by measuring the changes in fluorescence intensity between the swollen and collapsed states.

show abstract

“…Because of the charged nature of the polyelectrolyte chains, the degree of chain‐stretching (or the height of the brush) is highly sensitive to the surrounding solution environment, including the pH value, ionic strength, and quality of the solvent, as well as the salts involved. Because of their tunable nature, there is also growing interest in using polyelectrolyte brushes as responsive materials …”

Section: Introductionmentioning

confidence: 99%

Structure and Functionality of Polyelectrolyte Brushes: A Surface Force Perspective

Billing

Ruths

et al. 2018

Chemistry An Asian Journal

View full text Add to dashboard Cite

The unique functionality of polyelectrolyte brushes depends on several types of specific interactions, including solvent structure effects, hydrophobic forces, electrostatic interactions, and specific ion interactions. Subtle variations in the solution environment can lead to conformational and surface structural changes of the polyelectrolyte brushes, which are mainly discussed from a surface-interaction perspective in this Focus Review. A brief overview is given of recent theoretical and experimental progress in the structure of polyelectrolyte brushes in various environments. Two important techniques for surface-force measurements are described, the surface forces apparatus (SFA) and atomic force microscopy (AFM), and some recent results on polyelectrolyte brushes are shown. Lastly, this Focus Review highlights the use of these surface-grafted polyelectrolyte brushes in the creation of functional surfaces for various applications, including nonfouling surfaces, boundary lubricants, and stimuli-responsive surfaces.

show abstract

50th Anniversary Perspective: Polymer Brushes: Novel Surfaces for Future Materials

Cited by 402 publications

References 286 publications

Polymer Dispersity Control by Organocatalyzed Living Radical Polymerization

Polymer Dispersity Control by Organocatalyzed Living Radical Polymerization

Chain End‐Functionalized Polymer Brushes with Switchable Fluorescence Response

Structure and Functionality of Polyelectrolyte Brushes: A Surface Force Perspective

Contact Info

Product

Resources

About