Antifouling superhydrophobic surfaces with bactericidal and SERS activity

Şahin, Furkan; Çelik, Nusret; Ceylan, Ahmet; Pekdemir, Sami; Ruzi, Mahmut; Önses, M. Serdar

doi:10.1016/j.cej.2021.133445

Cited by 78 publications

(43 citation statements)

References 73 publications

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“…Finally, we investigated the ambient air and mechanical stability of the fabricated SERS barcodes. In a first experiment, the SERS activity of the transferred barcodes was measured after varying periods (15,30,45,60, 90 days) of ambient air storage at dark. Figure S9 (Supporting information) shows that the silver patches retained their activity even after 90 days of ambient storage.…”

Section: Resultsmentioning

confidence: 99%

“…For RB, these bands are located at 1196 cm −1 (β(C-H) bend vibration), 1280 cm −1 (ν (C-C) bridge band stretch vibration), and 1359/1648 cm −1 (aromatic stretch vibrations). [59,60] For MB, these bands include 451 cm −1 (δ(C−N−C) skeletal deformation mode), 1392/1432 cm −1 (ν(C−N) symmetric and asymmetric stretches), and 1624 cm −1 (ν(C−C) ring stretches). [61] These results show that the taggant molecules retain their chemical composition during the processes of mixing with the silver ink, printing, thermal annealing, and transferring.…”

Section: Resultsmentioning

confidence: 99%

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Transferrable SERS Barcodes

Şahin

Pekdemir

Sakir

et al. 2022

Adv Materials Inter

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The demand for encoded surfaces has increased significantly over the past decade driven by the rapid digitalization of the world. Surface‐enhanced Raman scattering (SERS) offers unique capabilities in generation of encoded surfaces. The challenge is the limited versatility of SERS‐based encoding systems in terms of the applicable surfaces. This study addresses this challenge by using a temporary tattoo approach together with simplified fabrication of SERS‐active patterns by ink‐jet printing of a particle‐free reactive silver ink. Plasmonic silver nanostructures form on the tattoo paper upon ink‐jet printing and a brief thermal annealing. The SERS activity is sufficient to detect taggant molecules of rhodamine 6G, methylene blue, and rhodamine B with a nanomolar level sensitivity. Raman‐active taggants can be incorporated into the ink, for drop‐on‐demand patterning of multiple molecules in 1D and 2D barcode geometries. The SERS barcodes can be effectively transferred to a range of different substrates retaining high plasmonic activity and geometric integrity. The presented approach decouples the SERS‐active pattern preparation from the final substrate and greatly improves the versatility of the barcodes.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Transferrable SERS Barcodes

Şahin

Pekdemir

Sakir

et al. 2022

Adv Materials Inter

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“…In the past two decades, low surface energy coatings have been widely reported because of special surface wettability that plays a vital role in addressing issues ranging from daily life to industrial and agricultural production. [ 1 ] Inspired by the lotus leaf, [ 2 ] superhydrophobic surface with a contact angle (CA) larger than 150° and sliding angle (SA) lower than 10° has been developed and widely applied in self‐cleaning, [ 3 ] antifouling, [ 4 ] anti‐icing/frosting, [ 3a,5 ] anticorrosion, [ 6 ] anti‐paraffin, [ 7 ] drag reduction, [ 8 ] and oil/water mixture separation, [ 9 ] etc. The principle of fabricating superhydrophobic surface was based on the combination of micro/nano‐scale hierarchical structures and low surface energy chemical modification.…”

Section: Introductionmentioning

confidence: 99%

Self‐Lubricative Organic–Inorganic Hybrid Coating with Anti‐Icing and Anti‐Waxing Performances by Grafting Liquid‐Like Polydimethylsiloxane

Hao

Sun

et al. 2022

Adv Materials Inter

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Polydimethylsiloxane (PDMS) is one of the most popular materials to protect infrastructures from the complicated environment due to its chemical stability, nontoxicity, low cost, high durability, and chain flexibility. Herein, a series of organic–inorganic hybrid coatings are prepared by simply grafting loop‐like PDMS on a solid surface. Owning to the low surface energy and high mobility of PDMS chains, the special characteristics, including liquid repellency, anti‐fouling, self‐lubrication, anti‐ and delay‐ice, anti‐paraffin, etc., are presented. To confirm the liquid‐like slippery nature of PDMS surface, the controlled de‐icing and de‐waxing tests on rigid chain surfaces are conducted. The liquid‐like nature of PDMS allows ice or paraffin to have a low adhesion in a slip state, but a fractured state on alkylated and perfluorinated surface with a high adhesion strength. In addition, the flexible PDMS chains grafted on the inorganic silica layer by stable covalent bond endow the surface with excellent durability, including maintaining low ice adhesion during 50 icing‐deicing cycles, resistance to UV irradiation, washing or soaking in organic solvent, etc. This work provides a simple approach for constructing self‐lubricative low surface energy coating to realize de‐ice and de‐wax easily, which may have a broad prospect of application in equipment protection.

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“…There are two categories of materials that prevent microbial infection in medical tools, antimicrobial and antifouling materials [ 6 ]. The former inhibit or kill microorganisms because they have antimicrobial activity, which is achieved by some active agent release or by the presence of one on the surface, for example, the covalent bond of quaternary ammonium salts or biocide molecules; and the second prevents microorganism adhesion through hydration layers or lowering the surface energy since a low surface energy leads to high interfacial tension between the liquid and the substrate, which minimizes adhesion [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Antifouling PVC Catheters by Gamma Radiation-Induced Zwitterionic Polymer Grafting

Duarte-Peña

Bucio

2022

Polymers

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In medical environments, polymeric surfaces tend to become contaminated, hindering the treatment and recovery from diseases. Biofouling-resistant materials, such as zwitterionic polymers, may mitigate this problem. In this work, the modification of PVC catheters with a binary graft of 4-vinylpyridine (4VP) and sulfobetaine methacrylate (SBMA) by the oxidative pre-irradiation method is proposed to develop pH-responsive catheters with an antifouling capacity. The ionizing radiation allowed us to overcome limitations in the synthesis associated with the monomer characteristics. In addition, the grafted materials showed a considerable increase in their hydrophilic character and antifouling capacity, significantly decreasing the protein adsorption compared to the unmodified catheters. These materials have potential for the development of a combined antimicrobial and antifouling capabilities system to enhance prophylactic activity or even to help treat infections.

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Antifouling superhydrophobic surfaces with bactericidal and SERS activity

Cited by 78 publications

References 73 publications

Transferrable SERS Barcodes

Transferrable SERS Barcodes

Self‐Lubricative Organic–Inorganic Hybrid Coating with Anti‐Icing and Anti‐Waxing Performances by Grafting Liquid‐Like Polydimethylsiloxane

Antifouling PVC Catheters by Gamma Radiation-Induced Zwitterionic Polymer Grafting

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