Graphoepitaxy-Directed Assembly of Organic Semiconductor Single Crystals into Trellis Structures

Zong, Kai; Asawa, Kaustubh; Circelli, Abigail; Sparta, Nicholas; Choi, Chang Hwan; Lee, Stephanie S.

doi:10.1021/acsmaterialslett.0c00153

Cited by 5 publications

(10 citation statements)

References 37 publications

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“…In line with our previous work, 24 perylene crystals deposited from solution into nanopillar scaffolds exhibited orientation in the x-y plane and in the z direction for both nanopillar edge-toedge spacings, as displayed in Fig. 2C and D.…”

Section: Scaffolds With M =supporting

confidence: 91%

“…Previous X-ray diffraction measurements confirmed that perylene adopts the a-phase. 24 This phase is also evident by the 921 corners of the perylene crystals. For comparison, b-perylene crystals adopt a rhombohedral shape with corner angles of 1221 and 581.…”

Section: Resultsmentioning

confidence: 91%

“…Perylene crystals were deposited onto nanopatterned silicon scaffolds via dip coating from a 0.0625 wt% solution in chloroform at a temperature of 70 1C and a withdrawal speed of 0.4 mm min À1 , according to previously published procedures. 24 For all experiments, the solutions were covered with aluminium foil to prevent rapid solvent evaporation during the dip coating process.…”

Section: Organic Semiconductor Depositionmentioning

confidence: 99%

“…For perylene crystals deposited from solution onto lithographically-patterned Si nanopillar scaffolds, these platelike crystals were likewise found to orient with the flat faces perpendicular to the substrate surface. 24 For both of these systems, the fast charge transport direction of the crystals was oriented perpendicular to the substrate surface, ideal for sandwich electrode configurations used in organic solar cells and light-emitting diodes.…”

Section: Introductionmentioning

confidence: 99%

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Orienting and shaping organic semiconductor single crystals through selective nanoconfinement

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Section: Scaffolds With M =supporting

confidence: 91%

Section: Resultsmentioning

confidence: 91%

Section: Organic Semiconductor Depositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Orienting and shaping organic semiconductor single crystals through selective nanoconfinement

et al. 2021

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“…This size‐dependent dissolution and growth process is driven by chemical potential differences between small and large crystals. [ 39 ] Meanwhile, the thickness of the tubes gradually increases. As the tubes’ structure gradually becomes more regular, the van der Waals force between them becomes stronger.…”

Section: Resultsmentioning

confidence: 99%

Bridging 1D Inorganic and Organic Synthesis to Fabricate Ultrathin Bismuth‐Based Nanotubes with Controllable Size as Anode Materials for Secondary Li Batteries

Zong

Chu

Liu

et al. 2022

Small

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1D inorganic nanomaterials have been synthesized, which have been widely used for various applications, such as energy storage and conversion, bioelectronics, and electronic/optoelectronic devices. [6][7][8][9] Noteworthy, the smaller the diameter, the more fantastic properties 1D nanomaterials may have. [10] For instance, the semiconducting single-walled carbon nanotubes with a diameter of 0.8-1.6 nm have been taken as promising channel materials for nextgeneration transistors. [11] A tungsten oxide nanowire with a diameter of <1 nm showed a much better photochemical reduction of CO 2 than the commercial tungsten oxides due to the large surface area. [12] So far, the species with a diameter of <5 nm were still limited to a few inorganic materials, which are synthesized by specific conditions, such as chemical vapor deposition for the controlled synthesis of single-walled carbon nanotubes and solvothermal method to prepare metal oxide nanowires. [13][14][15][16] Methods that can prepare other types of ultrathin 1D nanomaterials on large scale are necessary for the expansion of their application fields.Polymers are well-developed for over a century and are prepared by polymerizing functional monomers with catalyticThe growth of ultrathin 1D inorganic nanomaterials with controlled diameters remains challenging by current synthetic approaches. A polymer chain templated method is developed to synthesize ultrathin Bi 2 O 2 CO 3 nanotubes. This formation of nanotubes is a consequence of registry between the electrostatic absorption of functional groups on polymer template and the growth habit of Bi 2 O 2 CO 3 . The bulk bismuth precursor is broken into nanoparticles and anchored onto the polymer chain periodically. These nanoparticles react with the functional groups and gradually evolve into Bi 2 O 2 CO 3 nanotubes along the chain. 5.0 and 3.0 nm tubes with narrow diameter deviation are synthesized by using branched polyethyleneimine and polyvinylpyrrolidone as the templates, respectively. Such Bi 2 O 2 CO 3 nanotubes show a decent lithium-ion storage capacity of around 600 mA h g −1 at 0.1 A g −1 after 500 cycles, higher than other reported bismuth oxide anode materials. More interestingly, the Bi materials developed herein still show decent capacity at very low temperatures, that is, around 330 mA h g −1 (−22 °C) and 170 mA h g −1 (−35 °C) after 75 cycles at 0.1 A g −1 , demonstrating their promising potential for practical application in extreme conditions.

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Leveling up Organic Semiconductors with Crystal Twisting

Whittaker,

Zhou,

Spencer

et al. 2023

Crystal Growth & Design

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The performance of crystalline organic semiconductors depends on the solid-state structure, especially the orientation of the conjugated components with respect to device platforms. Often, crystals can be engineered by modifying chromophore substituents through synthesis. Meanwhile, dissymetry is necessary for high-tech applications like chiral sensing, optical telecommunications, and data storage. The synthesis of dissymmetric molecules is a labor-intensive exercise that might be undermined because common processing methods offer little control over orientation. Crystal twisting has emerged as a generalizable method for processing organic semiconductors and offers unique advantages, such as patterning of physical and chemical properties and chirality that arises from mesoscale twisting. The precession of crystal orientations can enrich performance because achiral molecules in achiral space groups suddenly become candidates for the aforementioned technologies that require dissymetry.

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Graphoepitaxy-Directed Assembly of Organic Semiconductor Single Crystals into Trellis Structures

Cited by 5 publications

References 37 publications

Orienting and shaping organic semiconductor single crystals through selective nanoconfinement

Orienting and shaping organic semiconductor single crystals through selective nanoconfinement

Bridging 1D Inorganic and Organic Synthesis to Fabricate Ultrathin Bismuth‐Based Nanotubes with Controllable Size as Anode Materials for Secondary Li Batteries

Leveling up Organic Semiconductors with Crystal Twisting

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