Silver nanoparticle aided self-healing of polyelectrolyte multilayers

Huang, Xiangru; Bolen, Matthew J.; Zacharia, Nicole S.

doi:10.1039/c4cp00349g

Cited by 32 publications

(36 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This might be explained by the idea that incorporation of latex particles weakens the interaction between BPEI/PAA or introduces free volume during film assembly, and allows for greater mobility of the polymer chains. This is in agreement with previous results showing that silver nanoparticles can aid the self‐healing of BPEI‐PAA films . Extended the self‐healing experiment to longer times will improve self‐healing, but even after 30 min in some cases the scratch is not completely healed.…”

Section: Resultssupporting

confidence: 93%

“…The incorporation of latex particles into the BPEI/PAA film changes these properties of the multilayer films. It seems likely that systems that absorb more water are able to self‐heal better . Water adsorption from ambient humidity for the systems presented here was measured.…”

Section: Resultsmentioning

confidence: 97%

“…[25,26] Presented here is a study of the self-healing ability of LbL films with the inclusion of various types of latex particles. It is well known that the LbL method can be used to incorporate polyvalent colloidal objects, such as nanoparticles, [27,28] colloidal silica, [29,30] microgel particles, [31,32] or cells. [33] Polymeric latex particles are often used as a template for PEM capsules, [34][35][36][37] but it is difficult to find a report where they are incorporated into the film such as is the case in this work.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Self‐Healing Latex Containing Polyelectrolyte Multilayers

Cui

Zhang

Camilo

et al. 2018

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

Self‐healing paints would have the potential benefit of protecting the underlying substrate and extending the coating's service life. As a step toward those types of coatings, this work examines layer‐by‐layer films of branched poly(ethylene imine)/poly(acrylic acid) with the inclusion of various types of latex particles with different Tg and different compositions. Due to high mobility of the polyelectrolyte chains when plasticized with water, water enabled self‐healing of these films is demonstrated, as well as steam enabled self‐healing. The films with various latex particles show different swelling ratios, surface hydrophilicity, as well as varying ability to self‐heal scratches. This self‐healing property is studied as a function of temperature. Also, the mechanical properties such as hardness and modulus of the films are measured.

show abstract

Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 97%

mentioning

confidence: 99%

See 1 more Smart Citation

Self‐Healing Latex Containing Polyelectrolyte Multilayers

Cui

Zhang

Camilo

et al. 2018

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…Similar to the growth of the BPEI/PAA system, 19 the BPEIAg + /PAA system grows superlinearly during the first 15 bilayers (i.e., successive layers deposit more thickly than previous ones) 20 following the "in" and "out" diffusion mechanism. 21 For films of this type, one (or both) of the polyelectrolytes are able to not only to add on to the surface of the LbL film but to diffuse into the bulk of the film.…”

mentioning

confidence: 89%

Facile Assembly Enhanced Spontaneous Fluorescent Response of Ag⁺ Ion Containing Polyelectrolyte Multilayer Films

Huang

Zacharia

2014

ACS Macro Lett.

Self Cite

View full text Add to dashboard Cite

Fluorescent organic−inorganic composite materials exhibiting "turn-on" response are often based on conjugated small molecules. Conjugated polymers, however, often exhibit a "turn-off" response in combination with metal ions. Here we present fluorescent turn-on behavior of a branched poly(ethylene imine)-poly(acrylic acid)-Ag + ion complex in a thin film. The material is characterized by UV−vis, spectrofluorometry, XPS, and ICP-MS. The turn-on response is exhibited only with all three components present, implying that the optically active metal coordination complex contains amine and carboxylic acid groups. This behavior is observed in the solid state, meaning this material could be easily integrated into devices. We demonstrate sensing of formaldehyde vapor as well as halide containing solutions based on fluorescence quenching. This fluorescent material is simply made using the layerby-layer technique and commercially available polymers. C oordinative assembly, taking advantage of coordination complex formation, allows organic−inorganic functional assemblies to be formed from combinations of polymers, oligomers, metal ions, and metallopolymers. 1−4 Functionality of these materials includes optical properties such as fluorescence. Many fluorescent organo-metallic complexes are formed from the combination of a conjugated small molecule and a metal ion. 5,6 On the other hand, fluorescence of conjugated polyelectrolytes is often quenched (turn-off response) upon complexation with metal ions. 7−9 This can be explained by selfquenching and intermolecular energy transfer caused by the aggregation of chromophores in aqueous solution, or aggregation-caused quenching. 10 In certain cases when nonluminescent organic gelators aggregate, their gelation actually enhances luminescent emission (turn-on response). 11−13 One example is organogels assembled through metal ion coordination complexes. However, there are only a few reports describing fluorescent Ag + ion complexes, usually with conjugated small molecules, and Ag + ion complexation induced formation of fluorescent supramolecular gels. 14 More commonly, quenching of photoluminesence occurs, even though the unbound ligand may exhibit a strong fluorescence before chelating with Ag + ion. 14 Therefore, creation of this turn-on type of fluorescent probe in combination with Ag + ion still remains a significant challenge. Park et al. 11 presented a turn-on fluorescent supramolecular gel triggered by coordination of silver ion with a conjugated small molecule. The ligand itself is nonfluorescent in solution but it then becomes highly fluorescent when self-assembled with Ag + ion to form supramolecular fibers. Zhang et al. 15,16 reported a turn-on fluorescent gel based on tetraphenylethylene derivatives, which show very weak fluorescence in solution, but when complexed with Ag + ion, a strong emission is exhibited.The layer-by-layer (LbL) method for directing the complexation of polyelectrolytes is a versatile tool for creating thin films called polyelectrolyte multilayers (PEMs...

show abstract

“…Typically, the films are made of two oppositely charged polyelectrolytes or colloidal materials bound together through electrostatic interactions, assembled with a sequential dipping or spraying process . Exploring the functionalities of LbL films is a highly active research area, incorporating a broad range of materials (including polymers, nanoparticles, metal ions, lipids, proteins, dye molecules, dendrimers, and quantum dots) using various substrates. These materials are assembled not only with electrostatic interactions but also with hydrogen bonding, hydrophobic interactions, coordination interactions, covalent bonding, hydrophobic interactions, and complementary based pairing .…”

Section: Introductionmentioning

confidence: 99%

Functional polyelectrolyte multilayer assemblies for surfaces with controlled wetting behavior

Huang

Zacharia

2015

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Controlled wetting at surfaces and interfaces is an important area of research with numerous potential commercial applications. Both superhydrophobicity and superhydrophilicity can be used to enable applications such as self-cleaning, dropwise condensation, or antifogging. Many strategies for creating such surfaces center around biomimicry, replicating the structure of the lotus leaf, for example. Given the potential impact, creating surfaces with these properties using any number of fabrication is of great interest. One very promising fabrication technique, however, for creating these surfaces is the layer-by-layer (LbL)-directed self-assembly of polyelectrolytes and other charged materials. LbL is a sequential adsorption technique wherein a surface is exposed to first a solution of one charge and then a solution of the opposite charge. LbL has many advantages, including the ability to incorporate many different types of materials and therefore functionality, the ability to conformally coat substrates of complex geometry, and environmentally friendly aqueous processing. This review describes recent progress in using LbL to create surfaces with controlled wetting.

show abstract

Silver nanoparticle aided self-healing of polyelectrolyte multilayers

Cited by 32 publications

References 35 publications

Self‐Healing Latex Containing Polyelectrolyte Multilayers

Self‐Healing Latex Containing Polyelectrolyte Multilayers

Facile Assembly Enhanced Spontaneous Fluorescent Response of Ag⁺ Ion Containing Polyelectrolyte Multilayer Films

Functional polyelectrolyte multilayer assemblies for surfaces with controlled wetting behavior

Contact Info

Product

Resources

About

Silver nanoparticle aided self-healing of polyelectrolyte multilayers

Cited by 32 publications

References 35 publications

Self‐Healing Latex Containing Polyelectrolyte Multilayers

Self‐Healing Latex Containing Polyelectrolyte Multilayers

Facile Assembly Enhanced Spontaneous Fluorescent Response of Ag+ Ion Containing Polyelectrolyte Multilayer Films

Functional polyelectrolyte multilayer assemblies for surfaces with controlled wetting behavior

Contact Info

Product

Resources

About

Facile Assembly Enhanced Spontaneous Fluorescent Response of Ag⁺ Ion Containing Polyelectrolyte Multilayer Films