Fused donor–acceptor π-conjugated diazatruxenones: synthesis and electronic properties

Benito-Hernández, Angela; Sayed, Mardia T. El; Navarrete, Juan T. López; Delgado, M. Carmen Ruiz; Gómez‐Lor, Berta

doi:10.1039/c8qo00122g

Cited by 13 publications

(14 citation statements)

References 40 publications

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“…However, the inerasable property suggested that holes were insufficiently injected into the electret, which hindered the recombination with trapped electrons due to the significant difference between their HOMO energy levels. In regard to the results from p‐type and n‐type devices, it was interestingly found that the Poly CD exhibited ambipolar characteristics to trap holes or electrons by employing different types of semiconductors, which were attributed to the donor–acceptor structure of the CD unit …”

Section: Resultsmentioning

confidence: 99%

Novel Photoinduced Recovery of OFET Memories Based on Ambipolar Polymer Electret for Photorecorder Application

Chen

Wang

Tatsumi

et al. 2019

Adv Funct Materials

100

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A new design concept for novel photoresponsive flash organic field-effect transistor (OFET) memory is demonstrated by employing the carbazoledioxazine polymer (Poly CD) as an electret. Photoactive electrets that can absorb the light effectively rather than photoactive semiconductors are proposed by the "photo induced recovery" mechanism in the literature; however, the correlation between the chemical structure and photoresponsive electrical performances is ambiguous. In this study, it is reported for the first time that the OFET memory with trapped charges can be optically recovered by a polymer electret and the working mechanism can be explained by the structural design. The highly planar Poly CD electret exhibits photoluminescence quenching in film states, resulting in the generation of sufficient excitons to eliminate trapped charges under light excitation. Additionally, the Poly CD electret with coplanar donor-acceptor moieties is suitable for both p-channel and n-channel semiconductors. For p-type memory devices, a large memory window (82 V) and stable nonvolatile retention performance with high ON/OFF ratio could be obtained. The memories also display good switching reliability for voltage-programming and light-erasing cycles. This study provides useful information for the development of polymer-based photoresponsive flash OFET memories and demonstrates the practical applications of photorecorder and photosensitive smart tag.

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Section: Resultsmentioning

confidence: 99%

Novel Photoinduced Recovery of OFET Memories Based on Ambipolar Polymer Electret for Photorecorder Application

Chen

Wang

Tatsumi

et al. 2019

Adv Funct Materials

100

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“…Besides triphenylene, other molecular systems were studied in recent years, such as those based on triindole [ 208 , 209 ], phthalocyanine [ 125 , 210 ], thiophene [ 211 , 212 ] and truxenone [ 213 , 214 ] cores, or on particular molecular architectures, such as dendrons [ 174 , 176 , 215 , 216 ]. Nakawa and coworkers reported the study of the mesomorphic and mobility properties of a blend of 1,4,8,11,15,18,22,25-octahexylphthalocyanine (C6PcH2) with its analogue 1,4,8,11,15,18,22,25-octahexyltetrabenzotriazaporphyrin (C6TBTAPH2) [ 125 ].…”

Section: Recent Advances In the Study Of Discotic Liquid Crystalsmentioning

confidence: 99%

Charge Mobility in Discotic Liquid Crystals

Termine

Golemme

2021

IJMS

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Discotic (disk-shaped) molecules or molecular aggregates may form, within a certain temperature range, partially ordered phases, known as discotic liquid crystals, which have been extensively studied in the recent past. On the one hand, this interest was prompted by the fact that they represent models for testing energy and charge transport theories in organic materials. However, their long-range self-assembling properties, potential low cost, ease of processability with a variety of solvents and the relative ease of tailoring their properties via chemical synthesis, drove the attention of researchers also towards the exploitation of their semiconducting properties in organic electronic devices. This review covers recent research on the charge transport properties of discotic mesophases, starting with an introduction to their phase structure, followed by an overview of the models used to describe charge mobility in organic substances in general and in these systems in particular, and by the description of the techniques most commonly used to measure their charge mobility. The reader already familiar or not interested in such details can easily skip these sections and refer to the core section of this work, focusing on the most recent and significant results regarding charge mobility in discotic liquid crystals.

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“…Note that similar observations have been previously reported for the isolated trigonal building units. [40][41][42] (ii) Considering the effects of the p-bridge, the insertion of a phenylene spacer between the cores exerts a slight impact on the HOMO and LUMO energy levels when compared to the directly connected systems, suggesting a minor influence on the p-electron delocalization between platforms. This is in consonance with the similar distortions found for both the directly connected and phenylene-bridged systems.…”

Section: Molecular Fragmentsmentioning

confidence: 99%

“…[36][37][38][39] However, while isolated truxene-based molecules have been amply theoretically explored, a systematic study of their 2D conjugated polymers has not yet been reported. [40][41][42] In this work, we performed an exhaustive investigation of truxene-based 2D conjugated polymers with the aim to explore their chemical structure-electronic property relationships to guide the design of novel optimized 2D materials. To this end, we combined an oligomer approach with periodic boundary conditions (PBC) calculations for the 2D lattices.…”

Section: Introductionmentioning

confidence: 99%

In silico design of 2D polymers containing truxene-based platforms: insights into their structural and electronic properties

et al. 2020

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Fused donor–acceptor π-conjugated diazatruxenones: synthesis and electronic properties

Abstract: A promising candidate for ambipolar charge transport: a disk-like platform, diazatruxenone, as a novel, compact and planar donor–acceptor molecule.

Cited by 13 publications

References 40 publications

Novel Photoinduced Recovery of OFET Memories Based on Ambipolar Polymer Electret for Photorecorder Application

Novel Photoinduced Recovery of OFET Memories Based on Ambipolar Polymer Electret for Photorecorder Application

Charge Mobility in Discotic Liquid Crystals

In silico design of 2D polymers containing truxene-based platforms: insights into their structural and electronic properties

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