CVD of polymeric thin films: applications in sensors, biotechnology, microelectronics/organic electronics, microfluidics, MEMS, composites and membranes

İnce, Gözde Özaydın; Coclite, Anna Maria; Gleason, Karen K.

doi:10.1088/0034-4885/75/1/016501

Cited by 156 publications

(117 citation statements)

References 227 publications

(263 reference statements)

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“…iCVD is a versatile platform for fabrication of a wide range of polymer thin lms preserving the organic functionalities of monomer precursors. 25,26 The vapor deposition approach is ideal for coatings of limited solubility, such as the low surface energy uoropolymers desired for icephobic applications. 27,28 The iCVD polymer lms grow from the substrate up, enabling interfacial engineering at the initial growth interface to promote adhesion of the lm to the substrate.…”

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confidence: 99%

Linker-free grafting of fluorinated polymeric cross-linked network bilayers for durable reduction of ice adhesion

2015

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Thin films of bilayer poly(divinyl benzene) p(DVB)/poly(perfluorodecylacrylate) (p-PFDA) are synthesized via iCVD on steel and silicon substrates. Nanomechanical measurements reveal that the elastic modulus and hardness of the films are enhanced through the bilayer structure and that the adhesion of the films to the substrate is improved via in situ grafting mechanism. The strength of ice adhesion to the treated surfaces is reduced more than six-fold when the substrates are coated with these bilayer polymer networks. 9 Icing can decrease efficiency in power production, result in mechanical and/or electrical failure, impact monitoring and control, and generate safety hazards.2,3,5,7 Active deicing methods that are employed to melt and break previously formed ice layers necessitate increased design complexity, may have detrimental environmental consequences, and require substantial power input for operation.10,11 Passive methods have recently been employed to protect exposed surfaces using icephobic coatings with characteristics designed to retard the formation of ice and facilitate the removal of ice deposits.3,9,12-22 Such coatings have been developed using solgel systems containing uorinated compounds and low surface energy rubbers, 20 lubricant-impregnated textured surfaces, 4 via hydrothermal reaction method, 23 low-pressure plasma polymerization, 24 and phase-separation methods. 7 However, a need remains for deposition methods that produce durable and mechanically-robust coatings over the large areas with enhanced adhesion to textured/rough surfaces that are commonly encountered in real world applications.In the present work, we have designed and synthesized for the rst time a mechanically-robust bilayer consisting of a thick and dense polymer base layer that is highly cross-linked and then capped with a covalently-attached thin icephobic uorine-rich top layer. We believe that the presence of a highly cross-linked polymer layer underneath a very thin u-oropolymer cap acts as a steric barrier resisting local surface reorganization, forcing the uorinated groups to remain on the surface even under wet conditions (Fig. S1, ESI †). In addition, the mechanical properties (for example the elastic modulus and hardness) of these customized bilayer polymer networks can be signicantly enhanced. Conceptual insightsIce formation and accumulation on surfaces can result in severe problems for solar photovoltaics, offshore oil platforms, wind turbines, and aircra. Practical adoption of icephobic surfaces requires mechanical robustness and stability under the harsh real-world environments. Here we design an icephobic surface using a bilayer strategy, optimizing the base layer for mechanical properties, while the top layer provides the desired high receding water contact angle (WCA). Both layers are formed sequentially by initiated chemical vapor deposition (iCVD) in the same reaction chamber. The iCVD polymerization of divinyl benzene (DVB) yields a cross-linked hydrocarbon base layer which is capped with an ultrathi...

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confidence: 99%

Linker-free grafting of fluorinated polymeric cross-linked network bilayers for durable reduction of ice adhesion

2015

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“…Different methods for deposition of the thin polymer films from gas phase (including HW CVD) for various applications were reviewed in [10]. The paper contains data concerned PFP, FP and other industrially valuable polymer films applications in the fields of sensors, medicine, biotechnology, microelectronics, organic electronics, microfluidics etc.…”

Section: Fp Coatings Applications In Bio/medicinementioning

confidence: 99%

Protective applications of vacuum-deposited perfluoropolymer films

Grytsenko¹

2016

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. The paper summarizes in brief applications of perfluoropolymer thin films deposited from the gas phase by several different methods, for protection of various materials and devices both at the research stage and already in industry. Perfluoropolymer films protect from corrosion coated metals, attain superhydrophobic properties to various surfaces, enhance the lifetime of medical implants, passivating the surface of semiconductors, protect functional layers in organic light emitting diodes, field effect transistors etc. Organic molecules in the PTFE matrix revealed extreme stability and presents the new material for optical applications.

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“…Polymer consisting of repeating units of monomers is highly explored in various fields, owing to its non-toxicity [1], simple fabrication methodology and low cost [2,3], large surface-to-volume ratio [4] and easy modification [5]. The conjugated polymers have received particular attentions with their wide applications in batteries [6], organic light emitting diodes [2,4,7], and sensor [2,[4][5][6][8][9][10], due to their unique metallic and semiconducting properties [4] as well as the fluorescence properties [4,5,11].…”

Section: Introductionmentioning

confidence: 99%

Polyvinylpyrrolidone as a New Fluorescent Sensor for Nitrate Ion

Ing¹,

Sundari²,

Lintang³

et al. 2016

MJAS

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In this study, non-conjugated polyvinylpyrrolidone(PVP) was investigated for the first time as the potential polymeric material to sense nitrate ions by fluorescence spectroscopy. The PVP was diluted into various concentrations (3-10%) and they were used to sense the nitrate ions in different concentrations (0.1-100 mM). The PVP showed two excitation peaks at 285 and 330 nm due to the presence of C=O and N-C groups, respectively. One strong emission at 400 or 408 nm was observed with the excitation at 285 or 330 nm. The higher value of quenching constant at excitation wavelength of 285 nm indicated that C=O site was more favored for NO 3 -ions sensing than the N-C site. The PVP 7% gave the highest quenching constant; where the K SV value was 9.89 × 10 -3 mM -1 and 2.44 × 10 -3 mM -1 for excitation at 285 and 330 nm, respectively. The sensing capability was evaluated in the presence of interference ions (SO 4 2-, HCO 3 -, Cl -, and OH -). It was observed that the interference ions interacted strongly with the C=O, but weakly with the N-C. Therefore, in the presence of the interference ions, the PVP would be a potential fluorescent sensor when it is excited at 330 nm.Keywords: polyvinylpyrrolidone; fluorescent sensor; nitrate ions; quenching Abstrak Dalam kajian ini, polivinilpirolidon (PVP) yang bersifat bukan konjugat dikaji untuk kali pertama sebagai bahan polimer yang berpotensi untuk mengesan ion nitrat dengan spektroskopi pendaflour. PVP dicairkan kepada kepekatan yang berlainan (3-10%) dan digunakan untuk mengesan ion nitrat dalam kepekatan yang berbeza (0.1-100 mM). PVP menunjukkan dua puncak pengujaan pada 285 and 330 nm dengan kewujudan C=O dan N-C masing-masing. Satu puncak pemancaran yang tinggi pada 400 atau 408 nm diperolehi dengan pengujaan pada 285 atau 330 nm. Pemalar pelidap kejutan dengan nilai yang lebih tinggi pada puncak pengujaan 285 nm menunjukkan bahawa tapak C=O lebih cenderung untuk mengesan ion NO 3 -daripada tapak N-C. PVP 7% memberi pemalar pelidap kejutan yang paling tinggi, dengan nilai K SV 9.89 × 10 -3 mM -1 and 2.44 × 10 -3 mM -1 untuk puncak pengujaan pada 285 dan 330 nm masing-masing. Kemampuan pengesanan dinilai dengan kehadiran ion gangguan (SO 4 2-, HCO 3 -, OH -, and Cl -). Hasil kajian menunjukkan bahawa ion gangguan berinteraksi kuat dengan C=O, tetapi lemah dengan N-C. Oleh itu, dengan kehadiran ion gangguan, PVP berpotensi menjadi pendafluor sensor pada tapak pengujaan 330 nm.Kata kunci: polivinilpirolidon; pengesan pendaflour, ion nitrat, pelidap kejutan

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CVD of polymeric thin films: applications in sensors, biotechnology, microelectronics/organic electronics, microfluidics, MEMS, composites and membranes

Cited by 156 publications

References 227 publications

Linker-free grafting of fluorinated polymeric cross-linked network bilayers for durable reduction of ice adhesion

Linker-free grafting of fluorinated polymeric cross-linked network bilayers for durable reduction of ice adhesion

Protective applications of vacuum-deposited perfluoropolymer films

Polyvinylpyrrolidone as a New Fluorescent Sensor for Nitrate Ion

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