Growth enhancement and field emission characteristics of one-dimensional 3,4,9,10-perylenetetracarboxylic dianhydride nanostructures on pillared titanium substrate

Suen, Shich-Chang; Whang, Wha–Tzong; Hou, Fu-Ju; Dai, Bau–Tong

doi:10.1016/j.orgel.2007.03.003

Cited by 9 publications

(3 citation statements)

References 34 publications

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“…1D inorganic nanostructures, especially carbon NTs, as field-emitter tips have been widely used in field-emission displays [35], x-ray sources [36], and microwave amplifiers [37]. However, organic NW array-based field emitters have rarely been investigated until now due to the lack of aligned organic NW arrays [12][13][14]. In addition, people always doubted that the organic NW could endure the working situation of a high electric field and high current.…”

Section: Resultsmentioning

confidence: 99%

“…Organic semiconductor nanostructures have attracted great interest in recent years because of their advantages of lowcost, low-temperature processing, and outstanding optoelectronic properties, as well as their flexibility [1][2][3][4]. There have been many reports of one-dimensional (1D) organic semiconductor nanowire (NW) applications in organic photovoltaics [5,6], organic light-emitting diodes [7], organic fieldeffect transistors (OFETs) [8,9], optical waveguides [10,11], field emission [12][13][14], photodetectors [3,[15][16][17], and so on, indicating their great potential for future miniaturized electronic and optoelectronic devices. However, most electronic and optoelectronic devices require highly aligned, uniform, and well controllable NWs to achieve excellent performance.…”

Section: Introductionmentioning

confidence: 99%

“…Synthesis of PTCDA nanostructures through a solution process has been studied, but the process is very complex, and the products usually have polycrystalline structures [25]. Besides the solution process, the PVD process has recently been utilized to obtain distinct PTCDA nanostructures such as NWs, nanoparticles (NPs), and nanotubes (NTs) by tuning the growth conditions [13,[26][27][28]. Applications of the PTCDA nanostructures in optoelectronic and sensor devices were intensively investigated.…”

Section: Introductionmentioning

confidence: 99%

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Patterned growth of single-crystal 3, 4, 9, 10-perylenetetracarboxylic dianhydride nanowire arrays for field-emission and optoelectronic devices

et al. 2015

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3, 4, 9, 10-perylenetetracarboxylic dianhydride (PTCDA) organic nanostructures possess extraordinary electronic and optoelectronic properties. However, it remains a challenge to achieve patterned growth of PTCDA nanowire (NW) arrays for integrated device applications. Here, we demonstrated the high-density, large-area, uniform, and cross-aligned growth of single-crystalline PTCDA NW arrays by using Au nanoparticles (NPs) as the growth templates. The high surface energy of Au NPs led to the cross-aligned growth of organic NWs, enabling the growth of PTCDA NW arrays with any desirable patterns by pre-patterning the Au films on a Si substrate. The PTCDA NW arrays as field emitters show good performance with a large emission current density and high emission stability. Furthermore, photodetectors based on PTCDA NW arrays were constructed via a simple in-situ growth approach, which exhibited high sensitivity to a wideband light ranging from 400-800 nm and surpassed the individual NW-based photodetectors in terms of higher photocurrent and faster response speed. Successful applications of PTCDA NW arrays in field emission and photodetectors show a great potential application of organic NW arrays in future efficient electronic and optoelectronic devices.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Patterned growth of single-crystal 3, 4, 9, 10-perylenetetracarboxylic dianhydride nanowire arrays for field-emission and optoelectronic devices

et al. 2015

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Hierarchical Glass Fiber Superstructures with Supramolecular Nanofibers for the Nucleation of Isotactic Polypropylene

Schröder,

Thanner,

Kreger

et al. 2024

Macro Materials & Eng

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Supramolecular additives are an established class of nucleating agents to modify and control the solid‐state morphology of semi‐crystalline polymers, in particular isotactic polypropylene (iPP). A widely used reinforcement material for iPP is glass fibers (GFs), which significantly improve the mechanical properties. Here, these two types of materials are combined by creating defined hierarchical superstructures composed of glass microfiber nonwovens and supramolecular nanofibers based on selected 1,3,5‐benzetrisamides (BTA). The supramolecular nanofibers are prepared by physical vapor deposition (PVD), a straightforward solvent‐free process. By systematically varying PVD process parameters, it is shown that supramolecular BTA nanofibers can be reproducibly prepared on flat substrates. The morphology of the supramolecular nanofibers can be controlled by substrate temperature, evaporation time, and evaporation rate. The use of GF nonwovens enables the fabrication of hierarchical superstructures with a bottlebrush morphology comprising supramolecular nanofibers of defined length. These hierarchical superstructures are capable of nucleating iPP and thus promote transcrystallization of the iPP from the decorated GFs surface, which ultimately improves the adhesion between the GFs and the iPP. Laminating decorated GF nonwovens between two iPP films clearly increases the mechanical properties of the composites in contrast to composites without nucleating agents.

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Mesostructured Nonwovens with Supramolecular Tricycloquinazoline Nanofibers as Heterogenous Photocatalyst

Schröder,

Neuber,

Mansfeld

et al. 2023

Small Science

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Functional supramolecular nanostructures are a promising class of materials, which can be used as potential heterogeneous photocatalysts in water. Self‐assembly to nanoobjects in solution typically requires large solubilizing groups linked to the photoactive building block, and possibly hampers access to the photocatalytic active sites. Herein, a straightforward method to fabricate supramolecular nanofibers based on the disclike tricycloquinazoline (TCQ) by physical vapor deposition (PVD) is reported. It is demonstrated that TCQ can be assembled on different substrates into supramolecular nanofibers with diameters of about 70 nm resulting in densely packed fiber layers. With optimized conditions, the evaporation time allows full control over the fiber length and the absorbance of the TCQ fiber layer. A bottlebrush‐like morphology with TCQ nanofibers is realized using glass‐microfiber nonwovens as porous support. These mesostructured nonwovens can be used as photocatalysts for the degradation of rhodamine B in a batch process in water where the morphology remains intact after the reaction. After photocatalytic degradation of rhodamine B or tetracycline under continuous flow conditions, the supramolecular TCQ nanofibers still remain on the support. These findings demonstrate that PVD is a feasible approach to achieve functional mesostructured nonwovens with controlled morphology for use and reuse in catalytic applications.

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Growth enhancement and field emission characteristics of one-dimensional 3,4,9,10-perylenetetracarboxylic dianhydride nanostructures on pillared titanium substrate

Cited by 9 publications

References 34 publications

Patterned growth of single-crystal 3, 4, 9, 10-perylenetetracarboxylic dianhydride nanowire arrays for field-emission and optoelectronic devices

Patterned growth of single-crystal 3, 4, 9, 10-perylenetetracarboxylic dianhydride nanowire arrays for field-emission and optoelectronic devices

Hierarchical Glass Fiber Superstructures with Supramolecular Nanofibers for the Nucleation of Isotactic Polypropylene

Mesostructured Nonwovens with Supramolecular Tricycloquinazoline Nanofibers as Heterogenous Photocatalyst

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