New Nanosized Systems of Polymer Metal Complexes Based β-Diketones and Lanthanides for Electroluminescent Devices

Savchenko, I. A.; Berezhnytska, Aleksandra; Mishchenko, Artem

doi:10.1007/978-3-319-18543-9_30

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…The resulting spectra are presented in Figure 1. The ATR-IR spectrum displays peaks at 1053 cm −1 (C-O stretching), 1356 cm −1 (O-H bending), 1593 cm −1 (aromatic C=C stretching), 1714 cm −1 (C=O stretching), and a broad shoulder positioned at ~3190 cm −1 (O-H stretching) [31][32][33][34][35]. The XPS spectrum displays the C1s peak at 258 eV and the O1s at 531 eV for the as-prepared graphite powder.…”

Section: Characterisation Of As-prepared Go Powdermentioning

confidence: 99%

Geometric Tuning for Enhanced Moisture-Driven Electricity Generation Enabled by Graphene-Oxide Flakes

et al. 2022

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In this work, we formulate water-based graphene oxide (GO) inks to fabricate moisture energy generators (MEGs) while a two-fold geometric tuning is proposed to encourage enhanced performance. Two GO-based structures with distinctly different thicknesses were prepared as the moisture absorbing layer: a GO-pellet (GOP) and a thinner GO-film (GOF). The effect of electrical contacts’ configuration on the MEG’s output voltage (Vo) was evaluated as a second geometric tunning approach by varying the surface area of the contacts and their orientation with respect to the GO plane, i.e., horizontal or vertical. GOF-based devices that employed a horizontal contacts’ configuration demonstrated champion Vo values (~350 mV) and the fastest response to humidity (3 min required to reach maximum Vo when the relative humidity, or RH, was increased). In GOP devices with horizontal point-like contacts, Vo is inversely related to the contacts’ distance, with a maximum Vo of ~205 mV achieved at a ~1 mm contacts’ distance. GOP-based MEGs with point-like contacts placed vertically to the GO-plane yielded a higher Vo value (~285 mV), while the humidity response time was 15 min. Replacing these contacts with large area electrodes in GOP devices resulted in devices with a slower response to humidity (~30 min) due to a smaller exposed GO surface area. These geometric tuning techniques allowed for the investigation of the optimum device configuration towards efficient moisture-based energy generation with a fast response.

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Section: Characterisation Of As-prepared Go Powdermentioning

confidence: 99%

Geometric Tuning for Enhanced Moisture-Driven Electricity Generation Enabled by Graphene-Oxide Flakes

et al. 2022

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Poly complexes based unsaturated β-diketones and rare earth elements for optoelectronics

Savchenko

Berezhnytska²,

Trunova³

et al. 2016

Molecular Crystals and Liquid Crystals

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From Organics to Polymers

Kolendo

Savchenko

Vretik

et al. 2017

Bull. T. Shevchenko Nat. Univ. Kyiv. Chem.

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Polymers, composites, their components and complexes for application in information tecnologies and biotechnology as well as for medicine and solar energy transfer have been obtained. In particular, new high-resolution photochromic polymer materials with a significant nonlinear optical effect of the third order have been developed. They are perspective for the creation of high-speed optical switches in optical recording and information storage. A new way of recording information based on the generation of the second harmonic with new photochromic polymers has been found. The perspectivity of alken-functionalised poly(phenyl/naphthylmethacrylates) as basic compounds for polarization-sensitive polymeric media was prooved.The chemical modification of polymers by benzenesulfonamide derivatives for biostabilization of plastic masses and providing hydrophilic properties for their surface was carried out. A fundamentally new approach is developed in which processes of energy transfer of excited states in polymer macromolecule to the photostabilaser are used for effective stabilization of polymer materials. Thermostabilized samples of polystyrene with covalently bonded of imidophenylmethacrylates have been developed. The branched copolymers are highly efficient matrices for the synthesis of stable gold, silver, CdS and Au / CdS nanoparticles and copolymers that can be used as nanovectors for the target delivery of highly toxic antitumor drugs. New effective preparations for desinfaсtion of fish nurseries, dressing and hygienic materials, linen and clothes have been developed.

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New Nanosized Systems of Polymer Metal Complexes Based β-Diketones and Lanthanides for Electroluminescent Devices

Cited by 3 publications

References 18 publications

Geometric Tuning for Enhanced Moisture-Driven Electricity Generation Enabled by Graphene-Oxide Flakes

Geometric Tuning for Enhanced Moisture-Driven Electricity Generation Enabled by Graphene-Oxide Flakes

Poly complexes based unsaturated β-diketones and rare earth elements for optoelectronics

From Organics to Polymers

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