Szymon Gogoc's research works | Silesian University of Technology, Gliwice and other places

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Shedding Light on Highly Emissive 1,4‐Dihydropyrrolo[3,2‐b]pyrrole Derivatives: Synthesis and Aggregate‐Dependent Emission

Article

Oct 2023

Three tetraaryl‐1,4‐dihydropyrrolo[3,2‐b]pyrrole derivatives containing different number of long alkoxy chains (2, 4 and 6) were synthesized, characterized and applied in Organic Light Emitting Diodes (OLEDs). The compounds showed good emission properties with Photoluminescence Quantum Yields (PLQYs) higher than 80% in solution and 50% in solid sta...

Electroactive Dyes Based on 1,8-Naphthalimide with Acetylene Linkers as Promising OLED Materials - the Relationship Between Structure and Photophysical Properties

Article

Aug 2023

Four A-π-D-π-A type small organic molecules with 1,8-naphthalimide motifs were successfully synthesised. The designed compounds are built of two 1,8-naphthalimide units linked via ethynyl π-linkages with selected functionalised donor motifs i.e. 2,2'-bithiophene, fluorene, phenothiazine and carbazole derivative. The synthesis based on Sonogashira c...

Figure 1. Structures of small molecules with differently distributed...

Figure 2. Structures used as organic materials or as giant Seebeck...

Figure 3. Structures of diimides and their respective polymers.

Figure 4. Examples of small molecule structures used as molecular...

Figure 5. Examples of polydiimide structures used as active layers in OTEs.

Organic Thermoelectric Materials as the Waste Heat Remedy

Article

Full-text available

Feb 2022

The primary reason behind the search for novel organic materials for application in thermoelectric devices is the toxicity of inorganic substances and the difficulties associated with their processing for the production of thin, flexible layers. When Thomas Seebeck described a new phenomenon in Berlin in 1820, nobody could have predicted the future...

Fig. 1. UVevis spectra of solutions of polymers (0.5 mg mL À1 ) in DCM.

Fig. 2. Cyclic voltammetry of 1 mg mL À1 polymer solutions in 0.1 M Bu...

Fig. 3. Cyclic voltammetry of polymer films taken in their n-doping...

Fig. 4. Cyclic voltammetry of the first reduction step of PNDI-C,...

Fig. 5. UVeViseNIR spectra of the reduction process of the polymer...

Insight into the properties and redox states of n-dopable conjugated polymers based on naphtalene diimide units

Article

Full-text available

Mar 2019

The article focuses on the electrochemical and optical properties of n-type conjugated polymers, containing naphthalene diimide (NDI) acceptor units in their neutral and reduced states. Cyclic voltammetry reveals significant differences between the electrochemical stability of NDI-based polymers in the first and second reduced states. Combined elec...

Figure 1. (a) Structures of donor (PVK) and acceptor (PO-T2T) materials...

Figure 2. Absorption and photoluminescence (PL) spectra of donor,...

Thermally-Activated Delayed Fluorescence in Polymer-Small Molecule Exciplex Blends for Solution-Processed Organic Light-Emitting Diodes

Article

Full-text available

Jul 2018

The photophysics of an exciplex state, formed between a small molecule and a polymer, is investigated in this work. The results obtained with this blend show the strong potential of polymer-small molecule blends for triplet harvesting in organic light emitting diodes (OLEDs) via thermally-activated delayed fluorescence. The exciplex formed between...