Patterning in rapidly evaporated polymer solutions: Formation of annular structures under evaporation of the poor solvent

Bormashenko, Edward; Pogreb, Roman; Musin, Albina; Stanevsky, Oleg; Bormashenko, Yelena; Whyman, Gene; Barkay, Zahava

doi:10.1016/j.jcis.2006.03.064

Cited by 15 publications

(11 citation statements)

References 22 publications

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“…A review of the literature reveals numerous articles pertaining to evaporation‐induced self‐assembly and “breath figures” techniques and the application of these methods toward tuning the mesoscale morphology of films of homopolymers, copolymers, and composites . However, despite the intense work involving P3HT as a benchmark semiconducting polymer, our search of the literature did not uncover any previous reports of honeycomb patterning in P3HT films.…”

Section: Resultsmentioning

confidence: 92%

“…A review of the literature reveals numerous articles pertaining to evaporation-induced self-assembly and "breath figures" techniques and the application of these methods toward tuning the mesoscale morphology of films of homopolymers, copolymers, and composites. [39][40][41][42][43][44]46,[49][50][51][52][53] However, despite the intense work involving P3HT as a benchmark semiconducting polymer, our search of the literature did not uncover any previous reports of honeycomb patterning in P3HT films. Solvent evaporation-induced patterning is a very complicated process and as pointed out by Bormashenko et al, the physical mechanisms associated with this phenomenon remain "mysterious."…”

Section: Comparison With Previous Resultsmentioning

confidence: 99%

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Poly(3‐hexylthiophene) films prepared using binary solvent mixtures

Gordon

Lloyd

Boucher

2015

J Polym Sci B Polym Phys

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Binary solvent mixtures were routinely used to induce the hierarchical assembly of poly(3-hexylthiophene) (P3HT) in the liquid phase. This technique has garnered a lot of interest as a route to well-organized films and composites, but, to date, the impact that the attributes of the liquid-phase aggregates and solvent mixtures have on the organization of the films have only been partially scrutinized. The molecular weight and concentration dependence of P3HT assembly in three binary solvent mixtures containing chloroform and acetonitrile, n-hexane, or dichloromethane were studied using ultraviolet/visible absorbance spectroscopy and dynamic light scattering techniques. Films drop cast under slow and rapid evaporation conditions were observed using optical and atomic force microscopy. In general, there is no evidence that the characteristics of the liquid phase P3HT aggregates impact the structures of the films, but films cast from these solvent mixtures under rapid evaporation conditions exhibit an array of disparate morphologies and mesoscale patterning. V C 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 624-638

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Section: Resultsmentioning

confidence: 92%

Section: Comparison With Previous Resultsmentioning

confidence: 99%

Poly(3‐hexylthiophene) films prepared using binary solvent mixtures

Gordon

Lloyd

Boucher

2015

J Polym Sci B Polym Phys

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“…Since the preparation technique is simple and water droplet condensation is a common physical phenomenon that does not depend on a chemical reaction whatsoever, many compounds (commodity polymers, [2][3][4] block-copolymers, [1,[5][6][7] conjugated polymers, [8] engineering plastics, [9] low-molar-mass organics, [10] nanoparticles, [11][12][13] metal complexes, [14] etc.) can be screened and assessed.…”

Section: Introductionmentioning

confidence: 99%

Thermally Stable and Solvent Resistant Mesoporous Honeycomb Films from a Crosslinkable Polymer

Kabuto

Hashimoto

Karthaus

2007

Adv Funct Materials

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The preparation of mesoporous honeycomb films, also known as breath figure arrays (BFAs), from poly(styrene‐co‐maleic anhydride) is reported. Films containing regular arrays of micrometer‐sized air‐holes were prepared by evaporation of a chloroform solution of a mixture of the above polymer including 10 % of an amphiphilic polyion complex under high humidity that leads to the formation of a hexagonally packed monolayer of water droplets in the polymer film. The porous films were characterized by optical and scanning electron microscopy. Crosslinking was achieved by immersion in an ethanol solution of an α, ω alkyldiamine and the chemical reaction was monitored by infrared spectroscopy. The non‐crosslinked films are hydrophobic with a water contact angle of more than 90°, whereas the crosslinked films became hydrophilic, so that a water drop penetrated into the films. After crosslinking, the honeycomb structure was stable to up to 350 °C, an increase of more than 150 K as compared to the non‐crosslinked films.

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“…The BF formation mechanism has been widely studied using solid and liquid surfaces [31,[39][40][41][42][43][44] and literature is today available concerning aspects such as droplet nucleation and growth [39,[42][43][44][45][46][47] or coalescence [39,[48][49][50][51][52][53]. On the contrary, far more limited literature can be found devoted to understanding the patterning formation using breath figures from polymer solutions [54][55][56][57][58][59].…”

Section: Few Insights On the Breath Figures Mechanismmentioning

confidence: 99%

Breath Figures: Fabrication of Honeycomb Porous Films Induced by Marangoni Instabilities

Muñoz‐Bonilla¹,

Save²,

Billon³

et al. 2015

Polymer Surfaces in Motion

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The creation of porous polymer surfaces is a center of interest in current research. Porous surfaces possess extremely high specific surface areas, thus allowing their employment in a large variety of applications including electronics, photonics or biotechnology [1,2]. Pore size and distribution can play a major role in selective transportation or in insulation processes amongst others [3]. Those porous materials with cavities in the micrometer size range are interesting in catalysis, sensors, membrane preparation or as scaffolds for composite materials. Moreover porous materials with pore dimensions comparable to the wavelength of visible light are of interest as photonic band-gaps and optical stop-bands.Structures with micrometer or submicrometer dimensions can be created using different templating methods [4,5]. A large variety of approaches have been developed and employed to prepare microporous structured materials, including the use of templates such as ordered arrays of colloidal particles to produce inverse opal structures [6][7][8][9], from transformed polymeric sphere arrays [10,11], using emulsion droplets as templates [12], employing natural biological templates [13][14][15][16], by

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Patterning in rapidly evaporated polymer solutions: Formation of annular structures under evaporation of the poor solvent

Cited by 15 publications

References 22 publications

Poly(3‐hexylthiophene) films prepared using binary solvent mixtures

Poly(3‐hexylthiophene) films prepared using binary solvent mixtures

Thermally Stable and Solvent Resistant Mesoporous Honeycomb Films from a Crosslinkable Polymer

Breath Figures: Fabrication of Honeycomb Porous Films Induced by Marangoni Instabilities

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