Side-by-Side Directed Multilayer Patterning Using Surface Templates

Jiang, Xueping; Clark, Sarah L.; Hammond, Paula T.

doi:10.1002/1521-4095(200111)13:22<1669::aid-adma1669>3.0.co;2-9

Cited by 66 publications

(67 citation statements)

References 20 publications

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“…Among the techniques employed, the lithographic techniques are more widely adopted for the PEMs, which include surface selective deposition, [31] inkjet imprinting, [32] photopattern technology, [33,34] lift-off technology, [35,36] multilayer transfer printing, [37] and microcontact printing. [38,39] These techniques produce mainly the chemical patterns by chemical bonding and linking of other desirable substances on the PEM surfaces. However, due to the differences of chemical properties among the PEM surfaces, it is hard to find a universal method to pattern most of the PEMs.…”

Section: Introductionmentioning

confidence: 99%

Force‐Free Patterning of Polyelectrolyte Multilayers under Solvent Assistance

Han

Zhou

Gong

et al. 2010

Macro Materials & Eng

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Physical patterns were created on hydrated PSS/PDADMAC multilayers without using external force. A typical process was to put a PDMS stamp onto the wet and swollen multilayers, which were then put into an oven and maintained for a period of time to micromold the multilayers. The influence of molding temperature and time, multilayer thickness, solvent quality, and multilayer compositions on pattern formation were elucidated. Evolution of the patterns from double lines, double strips, and meniscus‐shaped ridges to high ridges was observed under all conditions, revealing that this is a universal principle for this process. Finally, patterns on PAA/PAH and PSS/PAH multilayers were also prepared at the optimal conditions, highlighting its wide generality on the multilayer patterning.

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Section: Introductionmentioning

confidence: 99%

Force‐Free Patterning of Polyelectrolyte Multilayers under Solvent Assistance

Han

Zhou

Gong

et al. 2010

Macro Materials & Eng

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“…These interactions do not occur with linear polyethyleneimine 4± ) adsorbed on the EG surface respectively (circular dots). Schematic shows cross-sectional view [20]. b Laterally patterned bicolor OLED model structure, containing 10(PDAC/PPP(±)) on COOH surface and 5(PAH/PAA)10(PAH/Ru(phen) 4± ) on the EG surface.…”

Section: Observation Of Selective Deposition With Simple Polyaminesmentioning

confidence: 99%

“…b Laterally patterned bicolor OLED model structure, containing 10(PDAC/PPP(±)) on COOH surface and 5(PAH/PAA)10(PAH/Ru(phen) 4± ) on the EG surface. Image on top is a fluorescence micrograph taken with the filter for red dye on the EG surface and the bottom image is the same sample taken with the fluorescence filter for the blue dye on the COOH surface [20]. LPEI, which is highly hydrated in aqueous solution, thus introducing strong steric repulsions with the similarly hydrated EG oligomer.…”

Section: Observation Of Selective Deposition With Simple Polyaminesmentioning

confidence: 99%

“…The differences in adsorption behavior of these and other polymers have been used as a tool to effectively control the region of film deposition and create sideby-side polyelectrolyte multilayer films on a surface [20]. A demonstration of sideby-side multilayer adsorption using LPEI and PAH was accomplished by first adsorbing multilayers of LPEI with polyacrylic acid (PAA) onto the COOH surface, followed by the adsorption of PAH/polyanions-based multilayers onto the EG regions of the surface.…”

Section: Observation Of Selective Deposition With Simple Polyaminesmentioning

confidence: 99%

“…PAH was then co-adsorbed with the ruthenium dye at pH 4.8, resulting in the adsorption of the red dye on the EG circular regions. The result was an alternating surface pattern of red and blue luminescent dye multilayers on a single surface [20].…”

Section: Observation Of Selective Deposition With Simple Polyaminesmentioning

confidence: 99%

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Surface‐Directed Colloid Patterning: Selective Deposition via Electrostatic and Secondary Interactions

Hammond

2003

Colloids and Colloid Assemblies

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A great deal of excitement has been generated around the idea of controlled and ordered arrays of micron-to nanometer-scale particles arranged on surfaces. The ability to direct the positions of such small ªobjectsº onto a substrate provides a large advantage in the creation of molecular-to nanometer-scale devices, biological sensors, combinatorial arrays, and electronic and photonic devices. For these reasons, a number of approaches have been investigated which involve the manipulation of colloidal systems using electrostatics [1±6], lithography, dip-coating, physical confinement in etched or molded grooves [7], sedimentation [8±13], capillary forces [14], flow fields [15, 16], electrophoretics [17], and microfluidics to guide specific systems to different regions of a surface. An especially compelling approach to directing deposition is to use secondary interactions such as coulombic interactions, hydrogen bonding, hydrophobic interactions, and biospecific interactions, as a means of guiding different elements to a surface. This form of self-assembly provides the basis for positioning a broad range of elements based on the presence of complementary functional groups on planar and nonplanar surfaces; this concept of ªsurface sortingº has been explored in our group with polyelectrolytes [18±21], and more recently, colloidal particles [22±25], as a potential tool in microfabrication. The chemical basis of this approach is the use of surface functionality for templating and directing the assembly of nanometer to micron-sized materials systems.The concept of surface sorting is illustrated schematically in Fig. 10.1. A chemically patterned surface containing different regions of charged, hydrogen bonding, hydrophobic, or biospecific ligand groups, acts as a template to which materials species of complementary functionality deposit onto their corresponding sites. This process can take place through a series of sequential adsorption steps, or, under highly controlled conditions with more specific interactions, it may be possible to achieve the desired effect in a single step. This concept is universal, and can be extended to a broad range of systems, including polyelectrolytes, colloidal particles, proteins, DNA, nanotubes, etc. Nonlithographic patterning methods, particularly contact printing techniques [26], allow us to create such systems on a

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Two Component Particle Arrays on Patterned Polyelectrolyte Multilayer Templates

et al. 2002

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The selective adsorption of two different types of particles to a patterned surface is shown for thiol‐modified gold. The far end of the alkanethiols is chemically varied and binds polymer particles with different properties—as illustrated in the Figure for charged polymer particles of different composition and size. Tuning of hydrophobicity and hydrogen bonding in this manner provides a versatile route to composite colloidal structures.

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Side-by-Side Directed Multilayer Patterning Using Surface Templates

Cited by 66 publications

References 20 publications

Force‐Free Patterning of Polyelectrolyte Multilayers under Solvent Assistance

Force‐Free Patterning of Polyelectrolyte Multilayers under Solvent Assistance

Surface‐Directed Colloid Patterning: Selective Deposition via Electrostatic and Secondary Interactions

Two Component Particle Arrays on Patterned Polyelectrolyte Multilayer Templates

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