Photopatterning DNA Structures with Topological Defects and Arbitrary Patterns Through Multiple Length Scales

Dhakal, Netra Prasad; Jiang, Jinghua; Guo, Yubing; Peng, Chenhui

doi:10.1103/physrevapplied.13.014026

Cited by 9 publications

(7 citation statements)

References 47 publications

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“…The azo dye SD1 (from DIC) is mixed with the N , N -dimethylformamide solvent at the concentration of 0.2 wt %. The SD1 solution is spin-coated on the cleaned substrates which have been treated by oxygen plasma for 1 min. , The coated substrates are then baked at 120 °C for 15 min. Two SD1 substrates are assembled with 20 μm glass spacers.…”

Section: Resultsmentioning

confidence: 96%

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Self-Assembly of Aqueous Soft Matter Patterned by Liquid-Crystal Polymer Networks for Controlling the Dynamics of Bacteria

Dhakal

Jiang

Guo

et al. 2020

ACS Appl. Mater. Interfaces

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The study of controlling the molecular self-assembly of aqueous soft matter is a fundamental scheme across multiple disciplines such as physics, chemistry, biology, and materials science. In this work, we use liquid-crystal polymer networks (LCNs) to control the superstructures of one aqueous soft material called lyotropic chromonic liquid crystals (LCLCs), which shows spontaneous orientational order by stacking the plank-like molecules into elongated aggregates. We synthesize a layer of patterned LCN films by a nematic liquid-crystal host in which the spatially varying molecular orientations are predesigned by plasmonic photopatterning. We demonstrate that the LCLC aggregates are oriented parallel to the polymer filaments of the LCN film. This patterned aqueous soft material shows immediate application for controlling the dynamics of swimming bacteria. The demonstrated control of the supramolecular assembly of aqueous soft matter by using a stimuli-responsive LCN film will find applications in designing dynamic advanced materials for bioengineering applications.

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Section: Resultsmentioning

confidence: 96%

“…The SD1 solution is spin-coated on the cleaned substrates which have been treated by oxygen plasma for 1 min. 43,44 The coated substrates are then baked at 120 °C for 15 min. Two SD1 substrates are assembled with 20 μm glass spacers.…”

Section: ■ Experimental Resultsmentioning

confidence: 99%

Self-Assembly of Aqueous Soft Matter Patterned by Liquid-Crystal Polymer Networks for Controlling the Dynamics of Bacteria

Dhakal

Jiang

Guo

et al. 2020

ACS Appl. Mater. Interfaces

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Section: Lcs From Biomaterialsmentioning

confidence: 99%

“…[ 70 ] Photo‐patterning can also be used to align DNAs (Figure 4f). [ 71 ] When a DNA solution is coated on a photo‐alignment layer of azo‐dye molecules that are exposed to linearly‐polarized UV light, n of DNAs is found to be tangentially aligned perpendicular to the polarization of UV light. The results demonstrate that various DNA configurations can be programmed from micrometer to millimeter length scale.…”

Section: Lcs From Biomaterialsmentioning

confidence: 99%

Liquid Crystalline Systems from Nature and Interaction of Living Organisms with Liquid Crystals

Kim

et al. 2022

Advanced Materials

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.202204275. of biosensors with additional functionalities (e.g., self-regulated drug release) that are not available in previous systems is reviewed. Examples addressed in this review convey the message that the intersection between biomaterials and LCs offers deep insights into fundamental understanding of biomaterials, and provides resources for development of transformative technologies.

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“…It has been studied extensively in the past 100 years and crystal growth still plays an increased role in modern science and technology. Organic crystal growth or aligning molecule chains with a solution process have been the subjects of many studies in different domains, like proteins/DNA, − liquid crystals, and nonlinear optical crystals . A very new area in this field is polymer semiconductor thin-film crystallization from a solution as this may lead to important consequences on the performance of optoelectronic devices because charge-carrier mobility is strongly influenced by the packing of the conjugated molecule chains. − For more than a decade, research has primarily focused on increasing the long-range order and the crystallinity of polymers as a strategy to improve the charge-transport properties.…”

Section: Introductionmentioning

confidence: 99%

Variety of Ordered Patterns in Donor–Acceptor Polymer Semiconductor Films Crystallized from Solution

Chun

et al. 2021

ACS Appl. Mater. Interfaces

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A huge challenge is to control the nucleation of crystallites/aggregates in the solution during polymer film formation to generate desired structures. In this work, we investigate crystallization of P(NDI2OD-T2), a donor–acceptor polymer semiconductor, with controlled solution flow along the contact line between the drying film and solution through a seesaw-like pivoting of samples during polymer drying. By controlling the pivoting frequency/amplitude, various types of line patterns can be observed: (I) an array of fishbone-like stripes oriented in the film-growth direction; (II) the pinning–depinning of contact line (PDCL)-mechanism-defined patterned wires along the contact line; and (III) periodic twined crystalline line pattern oriented in the direction of the contact line. The rich variety of pattern formation observed is attributed to the distinctiveness of the donor–acceptor conjugated polymer structure. The result measured from thin-film transistors made of the generated films/structures showed that the charge mobility of P(NDI2OD-T2) does not change much with the film morphology, which supports recent controversy over the charge-transportation mechanism of some donor–acceptor polymer semiconductors.

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Photopatterning DNA Structures with Topological Defects and Arbitrary Patterns Through Multiple Length Scales

Cited by 9 publications

References 47 publications

Self-Assembly of Aqueous Soft Matter Patterned by Liquid-Crystal Polymer Networks for Controlling the Dynamics of Bacteria

Self-Assembly of Aqueous Soft Matter Patterned by Liquid-Crystal Polymer Networks for Controlling the Dynamics of Bacteria

Liquid Crystalline Systems from Nature and Interaction of Living Organisms with Liquid Crystals

Variety of Ordered Patterns in Donor–Acceptor Polymer Semiconductor Films Crystallized from Solution

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