Crafting Threads of Diblock Copolymer Micelles <i>via</i> Flow-Enabled Self-Assembly

Li, Bo; Han, Wei; Jiang, Beibei; Lin, Zhiqun

doi:10.1021/nn500193y

Cited by 90 publications

(71 citation statements)

References 40 publications

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“…Oppositely, two kinds of higher surface tension solvents like carbon disulde (CS 2 ) and chlorobenzene (CB) were chosen to compare. 20 These results showed that the surface tension inuenced the formation of the stripes and higher surface tension was not benecial to the stripes formation in the capillary tubes. 5a and b), while in CB solution of P3HT, similar to the P3HT in CF solution, 30 but few ngering instability, nearly continuous and irregular line were formed (Fig.…”

Section: Surface Tension Effects On the Self-assembly Of P3htmentioning

confidence: 89%

“…14 For instance, the use of supramolecular self-assembly methods, 15 LB lm deposition technology 16 and self-assembly methods based on evaporation like controlled evaporative self-assembly (CESA). 19,20 Among them, CESA is a simple, rapid, economical method with good controllability and has access to a rich and large-area varied topography. 19,20 Among them, CESA is a simple, rapid, economical method with good controllability and has access to a rich and large-area varied topography.…”

Section: Introductionmentioning

confidence: 99%

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Self-assembly of large-scale P3HT patterns by confined evaporation in the capillary tube

et al. 2015

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A facile and robust route to fabricate large area patterns of poly(3-hexylthiophene) (P3HT) was developed by controlled evaporative self-assembly (CESA) technique within a confined space (capillary tubes). Properties of P3HT, solvents effects and inner surface properties of the capillary tube were systematically investigated.The results showed that the patterns could be controlled to evolve from dot deposits and stripes with fingering instabilities, to highly regular, nearly perfect stripes. The orientation of P3HT within an individual stripe was characterized through confocal polarized Raman spectroscopy at molecular level, which revealed that the backbone chains of P3HT were parallel to the contact line. This simple method therefore provides a universal approach to control the morphology of patterns and chain orientation of functional polymers simultaneously.

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Section: Surface Tension Effects On the Self-assembly Of P3htmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Self-assembly of large-scale P3HT patterns by confined evaporation in the capillary tube

et al. 2015

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“…The miscibility of the metal salt in the selective solvent need not be favorable. [188] There have been numerous metal nanoparticles (e.g., Au, Co, Ni, Pb, and Cu [189] ) generated from SABCMs (Figure 8b). [172] The other block is usually PS(polystyrene), which is incompatible with the P4VP/P2VP block.…”

Section: Self-assembled Block Copolymer Micellesmentioning

confidence: 99%

Organic Templates for Inorganic Nanocrystal Growth

You

Liang

et al. 2019

Energy & Environ Materials

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Nanocrystals provide a variety of size and shape-dependent properties with applications in a wide range of areas, gaining much attention in the past few years. However, due to the nature of the kinetic nanocrystal growth, the procedures often require strict experimental conditions and the shape and size of nanocrystals are difficult to control. In such context, organic templates, which are artificially modified or synthesized, can direct inorganic nanocrystal nucleation and growth to achieve desired shape, size and ultimately properties. In this review article, two general categories of organic templates used for making inorganic nanomaterials are discussed: biotemplates (e.g., peptide, lipid, DNA, and capsid) and block copolymer templates (e.g., block copolymer micelles, star-like block copolymer unimicelles). The goal of this review is to bridge these gaps and help foster a greater awareness of the range and applicability of different organic templating techniques within the field of nanotechnology. REVIEW Organic TemplateEnergy Environ. Mater. 2019, 2, 38-54

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“…[24,25] In this context, tetra chloroauric acid (HAuCl 4 ·xH 2 O) was used as gold precursors which can preferentially be incorporated into the P4VP cores via ionic-polar interactions. [24,25] In this context, tetra chloroauric acid (HAuCl 4 ·xH 2 O) was used as gold precursors which can preferentially be incorporated into the P4VP cores via ionic-polar interactions.…”

Section: Doi: 101002/marc201900525mentioning

confidence: 99%

A Simple Route to Hierarchical Rings of Diblock Copolymer Micelles

Yin

Peng

2019

Macromol. Rapid Commun.

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for use in catalysis and optoelectronic materials, etc. [7] As the fabrication of litho graphic templates usually invokes costly and multistep procedures, it is highly desirable to employ nonlithographic tem plates for creating hierarchically assem bled micelles."Breath figure" method has been widely recognized as an extremely simple and nonlithographic route to yield intriguing 2D or 3D honeycomb structures. [8][9][10] This approach involves evaporating a layer of solution that spreads on a flat support under a flow of moist gas. When solvent and water droplets evaporate completely, an ordered honeycomb array of macro porous films is formed. Notably, this is a onestep selfassembly process, which can be readily extended to a diversity of mate rials. [11][12][13][14][15][16][17] It is interesting to note that when decreasing the concentration of sol utes, the honeycomb films can transform into a set of isolated rings. [18,19] However, hierarchically assem bled rings composed of block copolymer micelles in breath figure method have not yet been largely explored.Herein, we report on a simple route to crafting hierar chically necklacelike structures of an amphiphilic diblock copoly mer (i.e., polystyreneblockpoly(4vinylpyridine) (PS bP4VP)) micelles by combining two concurrent selfassembling processes at different scales, namely, the breath figure strategy of the PSbP4VP solution evaporating in humid air to form rings at the microscopic scale and a spontaneous selfassembly of PSbP4VP micelles within individual ring at the nanometer scale. Remarkably, hierarchical gold necklacelike assemblies or lightemitting assemblies can be also produced by evapo rating the PSbP4VP/gold precursor solution or PSbP4VP/ fluorescent dyes solution in humid air. Quite intriguingly, corecorona inversion of micelles within the rings occurred in response to P4VPselective solvents, while such corecorona inversion was prohibited when the PSbP4VP micelles were loaded with gold precursors. A model is proposed to rationalize the occurrence or inhibition of corecorona inversion within the micelles. This simple and facile strategy may be potentially applicable to assemble a set of functional block copolymer micelles and inorganic nanocrystals into hierarchical organicinorganic nanohybrid rings for a wide range of applications in optics, electronics, optoelectronics, sensory devices, etc.As toluene is a selective solvent for the PS block while a poor solvent for the P4VP block, spherical micelles with an average diameter of ≈52 nm were formed in toluene, consisting of A hierarchically assembled necklace composed of amphiphilic diblock copoly mer micelles is exquisitely produced by capitalizing on two concurrent self-assembly processes at different scales (i.e., "breath figure" strategy of diblock copolymer micelles solution evaporating in humid air to yield rings at the microscopic scale in conjunction with self-assembly of diblock copolymer micelles within individual ring at the nanometer scale). Intriguingly, hierarchical rings of diblock copolym...

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Crafting Threads of Diblock Copolymer Micelles via Flow-Enabled Self-Assembly

Cited by 90 publications

References 40 publications

Self-assembly of large-scale P3HT patterns by confined evaporation in the capillary tube

Self-assembly of large-scale P3HT patterns by confined evaporation in the capillary tube

Organic Templates for Inorganic Nanocrystal Growth

A Simple Route to Hierarchical Rings of Diblock Copolymer Micelles

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