Detection of Alkylating Agents using Electrical and Mechanical Means

Gerchikov, Yulia; Borzin, Elena; Gannot, Yair; Shemesh, Ariel; Meltzman, Shai; Hertzog-Ronen, Carmit; Tal, Shay; Stolyarova, Sara; Nemirovsky, Y.; Tessler, Nir; Eichen, Yoav

doi:10.1088/1742-6596/307/1/012020

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…Organic semiconductors have been studied for many years due to their potential applications in many areas, such as light-emitting diodes, − organic lasers, field-effect transistors (FETs), , sensors, , and photovoltaic cells. , In these, one of the most researched areas is organic field-effect transistors (OFETs), due to their potential low production costs, large area compatibility, and potential flexibility, a desired property in flexible and wearable electronics . OFETs can be either p-type (hole conductors) or n-type (electron conductors), which nowadays are both relatively easy to make.…”

Section: Introductionmentioning

confidence: 99%

Mixed Phases as a Route to Self-Passivation: Effect of π-Stacking Backbone on the Physical and Electrical Properties of Naphthalenediimide Derivatives

et al. 2016

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Solution processable p-and n-type organic semiconductors are candidates for low-cost, large-area, and roll-to-roll printing of inexpensive mass-production electronics. In these organic semiconductors, it is the π-conjugated backbone that plays the major role in chargecarrier transport across the channel. In order to achieve better device performance, it is required to have better packing/crystallinity to minimize defects and avoid deep traps, so that effective transfer of charge carriers can take place in the solid state. Excellent results have been reported by blending crystal-forming organic semiconductors with amorphous polymers that serve as binders or passivating agents. We show that, for some molecular structures and processing conditions, mixtures of stereoisomers can separate and self-arrange into a thin amorphous layer covered by a polycrystalline layer. In this work, we focus on two families of constitutional isomers that differ only in the position of the pyridine groups on the π-skeleton and study the effect of the structure on the physical and electrical properties using absorption spectroscopy, AFM, X-ray, and organic field-effect transistor current−voltage response.

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Section: Introductionmentioning

confidence: 99%

Mixed Phases as a Route to Self-Passivation: Effect of π-Stacking Backbone on the Physical and Electrical Properties of Naphthalenediimide Derivatives

et al. 2016

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The Relation Between Molecular Packing or Morphology and Chemical Structure or Processing Conditions: the Effect on Electronic Properties

Kumar

Shivananda

Zaja̧czkowski

et al. 2014

Adv Funct Materials

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In the past few decades, mainly two kind of organic semiconductors, namely small molecules and polymers, have been dealt with. It turns out that the difference between these two categories in terms of charge carrier transport arises from the potentially different morphologies and the molecular packing. There are many studies showing the effect of the chemical structure on the electronic properties. However, in this study, the focus is on the role of processing conditions which is found to be of at least equal importance. To study a range of morphologies and packing in as similar molecules, two systems prepared by “Click”‐type chemistry are chosen, with the major difference between them being the replacement of a flat unit with one that introduces a slight twist to the aromatic skeleton. Through AFM and X‐ray studies, it is shown that the molecule with the potentially flat geometry can exhibit a high degree of π–π stacking, leading to morphologies ranging from polycrystalline to single crystals while the other is always in the amorphous film state. The transport properties are compared using organic field effect transistor (OFETs) in both top and bottom contact configurations.

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Detection of Alkylating Agents using Electrical and Mechanical Means

Cited by 2 publications

References 12 publications

Mixed Phases as a Route to Self-Passivation: Effect of π-Stacking Backbone on the Physical and Electrical Properties of Naphthalenediimide Derivatives

Mixed Phases as a Route to Self-Passivation: Effect of π-Stacking Backbone on the Physical and Electrical Properties of Naphthalenediimide Derivatives

The Relation Between Molecular Packing or Morphology and Chemical Structure or Processing Conditions: the Effect on Electronic Properties

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