Electrically charged selectivity of poly-para-xylylene deposition

Wu, Chih‐Yu; Sun, Ho-Yi; Liang, Wei‐Chieh; Hsu, Hsiang‐Chen; Ho, Hsin-Ying; Chen, Yuming; Chen, Hsien‐Yeh

doi:10.1039/c5cc08059b

Cited by 8 publications

(6 citation statements)

References 26 publications

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“…In order to pattern surfaces with PPX derivatives containing nitrogen and oxygen heteroatoms, further work was conducted by Wu et al [24]. The deposition of various PPX derivatives could be inhibited by electrically charging conducting substrates.…”

Section: Reviewmentioning

confidence: 99%

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Nanotopographical control of surfaces using chemical vapor deposition processes

Koenig¹,

Lahann²

2017

Beilstein J. Nanotechnol.

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In recent years much work has been conducted in order to create patterned and structured polymer coatings using vapor deposition techniques – not only via post-deposition treatment, but also directly during the deposition process. Two-dimensional and three-dimensional structures can be achieved via various vapor deposition strategies, for instance, using masks, exploiting surface properties that lead to spatially selective deposition, via the use of additional porogens or by employing oblique angle polymerization deposition. Here, we provide a concise review of these studies.

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Section: Reviewmentioning

confidence: 99%

“…Supplying electrical energy to the surface increases the surface energy, which results in the deactivation of the reactive monomer species on the surface. Patterning was realized by placing conducting aluminum metal channels on a nonconductive glass surface [24]. …”

Section: Reviewmentioning

confidence: 99%

Nanotopographical control of surfaces using chemical vapor deposition processes

Koenig¹,

Lahann²

2017

Beilstein J. Nanotechnol.

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“…The functionalization of the nanostructures was naturally enabled by the selection of the substituted poly- p -xylylene derivative (with a wide range of functionalities that are already established commercially) during the deposition process. The rationale of the selective deposition of poly- p -xylylenes was enlightened based on the inhibition behavior of high-energy surfaces including transition metals and their corresponding oxides , and electrically charged surfaces; therefore, a nanostructured surface of a conductive substrate was hypothesized for the preparation and construction of nano-sized poly- p -xylylene structures on the surface by selected chemical vapor deposition (CVD) polymerization. A cost-effective method of nanocolloidal lithography was utilized to generate an ordered arrangement of conductive metals on a surface, and the selective deposition of functionalized poly- p -xylylenes including amine, active ester, and a state-of-art multifunctional combination of the two groups was demonstrated for the fabrication of ordered structures with nanometer dimensions on the surface.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Functional Polymer Structures through Bottom-Up Selective Vapor Deposition from Bottom-Up Conductive Templates

Hsieh

Chen

et al. 2018

Langmuir

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An electrically induced bottom-up process was introduced for the fabrication of multifunctional nanostructures of polymers. Without requiring complicated photolithography or printing techniques, the fabrication process first produced a conducting template by colloidal lithography to create an interconnected conduction pathway. By supplying an electrical charge to the conducting network, the conducting areas were enabled with a highly energized surface that generally deactivated the adsorbed reactive species and inhibited the vapor deposition of poly- p-xylylene polymers. However, the template allowed the deposition of ordered poly- p-xylylene nanostructures only on the confined and negative areas of the conducting template, in a relatively large centimeter-scale production. The wide selection of functionality and multifunctional capability of poly- p-xylylenes naturally rendered the synergistic and orthogonal chemical reactivity of the resulting nanostructures. With only a few steps, the construction of a nanometer topology with the functionalization of multiple chemical conducts can be achieved, and the selected deposition process represents a state-of-the-art nanostructure fabrication in a simple and versatile approach from the bottom up.

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“…[2][3][4][5][6] FDAapproved in some instances, [7] poly-p-xylylene-based coatings have been prepared by CVD polymerization of [2.2]paracyclophane derivatives for surface modification and structuring of a wide range of materials. [8,5,9] The presence of substituents such as aldehyde, ketone, alcohol, ester,a mine, as well as fluorinated groups, thiol reactive groups,A TRP initiator groups, photosensitiveo ra lkynyl groups in the precursor and consequently in the polymer coatingh as enabled variousp ost-modification strategies. [2,[10][11][12][13][14][15][16][17][18][19][20][21][22][23] Attachmento fp roteins, short peptides, nucleotides, and other smallb iologically activem olecules onto this functional coating can dramatically influence the response of adherent cells.…”

Section: Introductionmentioning

confidence: 99%

“…Chemical vapor deposition (CVD) polymerization based on the Gorham process is a convenient and substrate‐independent process to synthesize stable, reactive coatings . FDA‐approved in some instances, poly‐ p ‐xylylene‐based coatings have been prepared by CVD polymerization of [2.2]paracyclophane derivatives for surface modification and structuring of a wide range of materials . The presence of substituents such as aldehyde, ketone, alcohol, ester, amine, as well as fluorinated groups, thiol reactive groups, ATRP initiator groups, photo‐sensitive or alkynyl groups in the precursor and consequently in the polymer coating has enabled various post‐modification strategies .…”

Section: Introductionmentioning

confidence: 99%

Polylutidines: Multifunctional Surfaces through Vapor‐Based Polymerization of Substituted Pyridinophanes

Gall

Hussal

Kramer

et al. 2017

Chemistry A European J

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We report a new class of functionalized polylutidine polymers that are prepared by chemical vapor deposition polymerization of substituted [2](1,4)benzeno[2](2,5)pyridinophanes. To prepare sufficient amounts of monomer for CVD polymerization, a new synthesis route for ethynylpyridinophane has been developed in three steps with an overall yield of 59 %. Subsequent CVD polymerization yielded well-defined films of poly(2,5-lutidinylene-co-p-xylylene) and poly(4-ethynyl-2,5-lutidinylene-co-p-xylylene). All polymers were characterized by infrared reflection-absorption spectroscopy, ellipsometry, contact angle studies, and X-ray photoelectron spectroscopy. Moreover, ζ-potential measurements revealed that polylutidine films have higher isoelectric points than the corresponding poly-xylylene surfaces owing to the nitrogen atoms in the polymer backbone. The availability of reactive alkyne groups on the surface of poly(4-ethynyl-2,5-lutidinylene-co-p-xylylene) coatings was confirmed by spatially controlled surface modification by means of Huisgen 1,3-dipolar cycloaddition. Compared to the more hydrophobic poly-p-xylylyenes, the presence of the heteroatom in the polymer backbone of polylutidine polymers resulted in surfaces that supported an increased adhesion of primary human umbilical vein endothelial cells (HUVECs). Vapor-based polylutidine coatings are a new class of polymers that feature increased hydrophilicity and increased cell adhesion without limiting the flexibility in selecting appropriate functional side groups.

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Electrically charged selectivity of poly-para-xylylene deposition

Cited by 8 publications

References 26 publications

Nanotopographical control of surfaces using chemical vapor deposition processes

Nanotopographical control of surfaces using chemical vapor deposition processes

Fabrication of Functional Polymer Structures through Bottom-Up Selective Vapor Deposition from Bottom-Up Conductive Templates

Polylutidines: Multifunctional Surfaces through Vapor‐Based Polymerization of Substituted Pyridinophanes

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