Electroactive materials for organic electronics: preparation strategies, structural aspects and characterization techniques

Abstract

This critical review discusses specific chemical and physicochemical requirements which must be met for organic compounds to be considered as promising materials for applications in organic electronics. Although emphasis is put on molecules and macromolecules suitable for fabrication of field effect transistors (FETs), a large fraction of the discussed compounds can also be applied in other organic or hybrid (organic-inorganic) electronic devices such as photodiodes, light emitting diodes, photovoltaic cells, etc. It should be of interest to chemists, physicists, material scientists and electrical engineers working in the domain of organic electronics (423 references).

The Effect of Aromatic Diimide Side Groups on the π-Conjugated Polymer Properties

“…1 H NMR (300 MHz, CDCl3) δ 8.13 (s, 2H), 7.55 (d, J = 6.0 Hz, 2H), 7.23 (d, J = 6.0 Hz, 2H), 4.24 (t, J = 6.6 Hz, 2H), 3.36 (t, J = 6.6 Hz, 2H), 1.80 (quin, J = 6.6 Hz, 2H), 1.51-1.29 (m, 6H). 13 2.1.1. 3,6-Dibromo-9-(2-octyldodecanyl)-9H-carbazole (3) 3,6-Dibromo-9H-carbazole (1.0 g, 3.1 mmol) and anhydrous DMF (5 mL) were charged into a dry flask and stirred.…”

“…NMR spectra were recorded at 600 MHz for 1 H NMR and 150 MHz for 13 C NMR on a Varian Mercury Plus 600 MHz spectrometer (Palo Alto, CA, USA) or at 300 MHz for 1 H and 75 MHz for 13 C NMR on a Varian XL-300 spectrometer.…”

“…This results in their widespread use as industrial pigments for automotive paints and textile coloration. Currently, PDI and NDI derivatives are widely tested materials as are widely tested materials as n-type semiconductors [12,13]. According to literature data, there are no efficient solar cells with simple, low molecular PDI or NDI units.…”

Electrospinning for nano- to mesoscale photonic structures

“…Since the discovery of electroluminescence in poly(p-phenylene vinylene) (PPV) [38], light-emitting OSCs have provided photo and electroluminescence in the UV-visible range with high emission efficiencies and large stimulated emission cross-sections [39][40][41][42]. Tunable chemical synthesis methods have allowed for control over electronic band-gap structure, optical properties, and electro-chemical redox at the molecular level [43][44][45][46][47][48][49][50][51][52] for the production of π-conjugated small molecules, oligomers, and polymers with optical and electronic properties suitable for a variety of applications of OSCs [43][44][45][46][47][53][54][55][56]. Organic light-emitting diodes (OLEDs) [38,57,58] and organic field-effect transistors (OFETs) [59][60][61], for instance, form the foundation of organic electronic circuits, and OLEDS now provide low operating voltage for efficient lighting and displays used in our everyday lives [62].…”

Synthesis of Two Novels-Shaped Dibenzo[c,l] Chrysene Derivatives, Crystal Structure, and the Evaluation of their Photophysical Properties

“…Over the past decade significant research has been done and the search for the new π-conjugated systems has been ongoing because of the important, rapidly growing number of applications in electronic devices such as semiconducting materials [2][3][4][5], organic solar cells [6], sensors [7], organic light-emitting diodes (OLEDs), organic field-effect transistors (OFETs), and flexible displays. π-conjugated materials have been extensively studied for their optoelectronic properties due to the offering of low-cost, large-area, and flexible electronic devices [8][9][10].…”