Photo-induced design of reflective metallized gold@polymer coatings with tuned architecture

Schejn, Aleksandra; Ott, M.; Dabert, Marine; Vidal, Loı̈c; Balan, Lavinia

doi:10.1016/j.matdes.2018.08.051

Cited by 10 publications

(13 citation statements)

References 61 publications

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“…The 12 different chalcone-based dyes (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12) were used as photoinitiators and prepared as reported in the supporting information (S1). Their molecular structures are given in the Scheme 1.…”

Section: Methodsmentioning

confidence: 99%

In situ generation of Ag nanoparticles during photopolymerization by using newly developed dyes‐based three‐component photoinitiating systems and the related 3D printing applications and their shape change behavior

Chen

Noirbent

Liu

et al. 2021

Journal of Polymer Science

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Silver nanoparticles (AgNPs) play a crucial role in biology and medical research as their extensive and efficient antibacterial activity and high electrical and thermal conductivity. However, the generation of them with a certain morphology under mild conditions (under air, solvent-free, room temperature, etc.,) is still a huge challenge. Herein, a simple one-step method is proposed to generate AgNPs in situ at room temperature under air by combining the photopolymerization process with the formation process of AgNPs within a few minutes. In detailed, 12 different dyes based on 2,5-diethylene-cyclopentan-1-one were first synthesized and used as high-performance type II photoinitiator. When using in conjunction of bis-(4-tertbutylphenyl) iodonium hexafluorophosphate (Iod) and ethyl 4-dimethylaminobenzoate (EDB), they can effectively boost the free radical photopolymerization (FRP) of polyethylene glycol diacrylate (PEG-DA) and the cationic photopolymerization (CP) of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate (EPOX) upon irradiation with LED@405 nm. Furthermore, all the formulations containing/without AgNPs can be successfully used to perform the direct laser write experiment. However, even if all of the obtained 3D patterns exhibited reversible swelling performance and shape-memory effects caused by swelling and dehydration for the access to 4D printing, the presence of AgNPs will affect these properties.

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Section: Methodsmentioning

confidence: 99%

In situ generation of Ag nanoparticles during photopolymerization by using newly developed dyes‐based three‐component photoinitiating systems and the related 3D printing applications and their shape change behavior

Chen

Noirbent

Liu

et al. 2021

Journal of Polymer Science

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“…34,35 With the beginning of 21 th century, the method of modifying polymeric fibrous surfaces by metallization, so-called surface metallization "either with an in-situ or ex-situ path", has received indescribable interest from surface engineering specialists and polymer science researchers. 19,20,[36][37][38] More precisely, it is possible to define the term of "metallization of polymeric surfaces" as follows: all operations in which natural, synthetic origin or hybrids polymers, in their various formulas (solutions, fibers), are shaped or combined with micro or nano-scaled inorganic compositions (alloy, zero-valent metal, metal-organic frameworks, oxides) to obtain a new product characterized by its function of use and its ability to meet the desired goals . [36][37][38] The process of electrospun nanofibers metallization is implemented through three essentially stages: thermal treatment of the polymeric solution in order to activate the polymer surface, adding inorganic material (either prepared using one of the synthesizing ways or adding the mineral raw material used) for the metallization procedure, spinning the fibers.…”

Section: Introductionmentioning

confidence: 99%

“…19,20,[36][37][38] More precisely, it is possible to define the term of "metallization of polymeric surfaces" as follows: all operations in which natural, synthetic origin or hybrids polymers, in their various formulas (solutions, fibers), are shaped or combined with micro or nano-scaled inorganic compositions (alloy, zero-valent metal, metal-organic frameworks, oxides) to obtain a new product characterized by its function of use and its ability to meet the desired goals . [36][37][38] The process of electrospun nanofibers metallization is implemented through three essentially stages: thermal treatment of the polymeric solution in order to activate the polymer surface, adding inorganic material (either prepared using one of the synthesizing ways or adding the mineral raw material used) for the metallization procedure, spinning the fibers. 33,36,37 After the metallization of the fibers, secondary treatments such as calcination of the fibers at high temperatures, or soaking in an alkaline solution 35 can be followed in order to further activate the surface of the fibers.…”

Section: Introductionmentioning

confidence: 99%

A comparative investigation of the synergistic correlation (mechanical-hydrophobicity/hydrophilicity vs. structural behaviors) of a series of surface-metalized polyacrylonitrile fibers by silver nanoparticles (AgPAN): An in-situ surface metallization protocol

Kara

Esmaeili

Kehtari

et al. 2022

Journal of Industrial Textiles

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Research problem The demand for polymeric materials is increasing day by day, provided that they have excellent virtues to meet desired needs. The best way to obtain high-quality polymeric materials was surface treatment in multiple methods. All the methods that have been used were expensive, multi-stage, harmful to the environment, and other shortages. Therefore, we sought in our paper to invent and develop a surface metallization protocol under green and safe conditions, based on integrating two safe methods for preparing nanomaterials (electrospinning/ultrasound) in one-pot. Aim of this work The main objective of this work is to answer a question that has been neglected in other papers: how does in-situ metallization affect the crystalline behavior of the semi-crystalline phase of the PAN matrix depending on different amounts of MA NPs and their synergy for the rest of the properties (morphological and structural) is presented, in first degree. In the second degree, an explanation of the synergy mechanism between the mechanical/hydrophilic properties and the modified structural properties of metalized fibers has explained. Results Here, an unaccustomed and green methodology to metalize the polyacrylonitrile, PAN, surface is reported with the intention of fashioning of a stable fibrous structure and the best specifications. The in-situ metallization process is essentially based on a loading of various amount of silver nanoparticles, as MA NPs “MA NPs”, (1 wt%, 4 wt%, 7 wt% and 10 wt%), which prepared by ultrasound irradiation assisted with a little amount of a reducer system (hydrazine/NaOH), on the PAN surface. The physiochemical characterization of as-synthesized fibrous samples was consisted of two parts: (i) characterization of sample nature (utilizing of XRD and UV-Vis. techniques), (ii) the chemical structure/morphological characterization (utilizing FESEM, TEM and AFM techniques) with performing all relevant measurements. From crystalline and UV-Vis. assessments, the observed shift in the diffraction peaks towards lower angles and slight shifts in the absorption bands of PAN (1 0 0) in the 1AgPAN and 4AgPAN samples, containing smaller-sized nanoparticles, are overt results of an improvement in the crystalline traits of the parent matrix. The FT-IR data revealed the intensification and overlapping of the IR-bands “C= N, C≡ N, N-H, C=O and O-H” without band shifting for fibrous samples with low content of MA NPs (1AgPAN and 4AgPAN samples). The intercalation of the MA NPs between the chains of the molecular matrix and the strong interconnection/hydrogen bonds between both components explain not only the change of the crystalline properties of the crystalline matrix but also the homogeneous distribution and creation of a stable layer of the MA NPs on the 0AgPAN surface, confirmed by the FESEM and TEM images. The results of the study of mechanical properties showed that the loading of small spherical particles onto the polymeric matric, in particular 1AgPAN and 4AgPAN samples, was positively reflected on the improvement of the mechanical performances and the related values, not in the 7AgPAN and 10AgPAN samples. Because the MA NPs have a hydrophobic character, loading them onto the bare polymeric fiber surface made the metalized fibers a stronger hydrophobic than that of hydrophilic character, which is consistent with differences in surface roughness (increasing Ra values). The main focus of this paper was to study the synergy of structural properties with each other. So, the results of the synergistic relationship study showed that the low amount of the MA NPs led to a comprehensive and positive correlation between all structural properties and in turn affected the mechanical properties-hydrophobic/hydrophilic properties. Noting that the fibers of the 1AgPAN and 4AgPAN samples had the best structural stability, compared to the fibers of the 0AgPAN, 7AgPAN and 10AgPAN samples, when they were: decreasing in Z value, increasing fiber diameter/particle size “P.S.”, increasing RCR and C.D. values and decreasing D.D, alteration in values obtained of the mechanical behavior and the increasing of contact angle “CA” values for water “H2O” droplets and decreasing for ethylene glycol “EG”. As a final result, the changes observed in the aforementioned measurements were reasonably regular and gradual for fibers with low MA NPs content, while the same measurements were significantly deteriorated in the case of fibers with higher MA NPs contents.

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“…Hence, the innovation lies in the specific nanoassembly of the NPs in the form of an in-depth concentration gradient in the acrylate polymer matrix that endows the as-synthesized metal/ polymers nanocomposite coating with valuable optical properties and a mirror-like appearance. 18,19 In this paper, we introduce an innovative and greener alternative that breaks with everything we have done before. It still consists of using a photoinduced process but this time without any stabilizer or polymer matrix.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Moreover, in previous work, we introduced an innovative and totally photochemical approach which allows the photo-cross-linking of an acrylate formulation and the simultaneousl photoreduction of the metal precursor; the ester functions of the polymer act also as stabilizers for these NPs. Hence, the innovation lies in the specific nanoassembly of the NPs in the form of an in-depth concentration gradient in the acrylate polymer matrix that endows the as-synthesized metal/polymers nanocomposite coating with valuable optical properties and a mirror-like appearance. , …”

Section: Introductionmentioning

confidence: 99%

Photo-Induced Self-Assembly of Silver Nanoparticles for Rapid Generation of First and Second Surface Mirrors

Caillosse

Zaier

Mezghani

et al. 2020

ACS Appl. Nano Mater.

Self Cite

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Interesting mirror-like, highly reflective, and conductive silver films have been successfully generated directly on a glass slide using a simple and fast photoinduced approach. A water-based photosensitive formulation containing the silver precursor and a photogenerator of free radicals was used. It was applied like paint and exposed to UV light for a few seconds, in the absence of any additional reducing agents and without further treatment of any kind. This approach allowed ultrathin films of silver nanoparticles to be generated in situ (AgNPs) on the back side of the glass substrate. The particles are homogeneously autoassembled onto the glass surface and the glass/silver diopter exhibits a high reflective character. With such an experimental arrangement, reflective surfaces are obtained: in contact with the glass slide, which is called the second surface mirror, and on the air side, which is called the first surface mirror. Quite interestingly, these reflective and conductive thin films exhibit strong natural adhesion on the glass substrate without the need for enhancing treatments (sensitization or activation) to improve the adhesion of the silver layer to the glass, as usual with silver glass mirrors. The influence of several chemical and photonic parameters has been examined in order to optimize the final optical and electrical properties of these silver films.

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Photo-induced design of reflective metallized gold@polymer coatings with tuned architecture

Cited by 10 publications

References 61 publications

In situ generation of Ag nanoparticles during photopolymerization by using newly developed dyes‐based three‐component photoinitiating systems and the related 3D printing applications and their shape change behavior

In situ generation of Ag nanoparticles during photopolymerization by using newly developed dyes‐based three‐component photoinitiating systems and the related 3D printing applications and their shape change behavior

A comparative investigation of the synergistic correlation (mechanical-hydrophobicity/hydrophilicity vs. structural behaviors) of a series of surface-metalized polyacrylonitrile fibers by silver nanoparticles (AgPAN): An in-situ surface metallization protocol

Photo-Induced Self-Assembly of Silver Nanoparticles for Rapid Generation of First and Second Surface Mirrors

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