Maciej Chotkowski
University of Warsaw
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Publication
Featured researches published by Maciej Chotkowski.
Organic Letters | 2015
Mariusz Tasior; Maciej Chotkowski; Daniel T. Gryko
A facile three-step approach to synthesizing quinoline-fused pyrrolopyrroles is reported. The crucial step in this synthesis is the condensation of 2-aminophenyl substituted pyrrolopyrroles with aromatic aldehydes. The resulting hexacyclic ladder-type dyes strongly absorb UV radiation and exhibit fluorescence at 450-510 nm. The presence of pyridine-type and pyrrole-type nitrogen atoms is important for the electronic properties of this almost planar heterocycle. These heteroatoms, along with the addition of moderate electron-withdrawing and electron-accepting substituents, provide a means for fine-tuning of the emission characteristics of the polycyclic conjugates.
Functional Materials Letters | 2011
Maciej Chotkowski; Monika Uklejewska; Hanna Siwek; Justyna Dłubak; Andrzej Czerwiński
Pt–Rh–Ru alloy catalysts for methanol electro-oxidation were prepared by electrochemical deposition under constant potential conditions. The Pt:Rh:Ru ratio was varied by changing electroplating solution composition. Obtained catalysts were examined electrochemically in acidic solutions containing methanol. Stripping voltammetry was applied to study adsorption of methanol on the electrodes surfaces while oxidation of methanol from solution was studied by means of chronoamperometry and cyclic voltammetry. The highest electrocatalytic activity was observed for an alloy with the highest obtained ruthenium concentration of 31%.
Chemical Communications | 2013
Agnieszka Nowak-Król; Marek Grzybowski; Jerzy Romiszewski; Mikhail Drobizhev; Geoffrey Wicks; Maciej Chotkowski; Aleksander Rebane; Ewa Gorecka; Daniel T. Gryko
Chemistry: A European Journal | 2012
Roman Voloshchuk; Daniel T. Gryko; Maciej Chotkowski; Adina I. Ciuciu; Lucia Flamigni
Journal of Electroanalytical Chemistry | 2011
Maciej Chotkowski; Z. Rogulski; A. Czerwiński
Chemical Communications | 2016
Marek Grzybowski; I. Deperasińska; Maciej Chotkowski; Marzena Banasiewicz; Artur Makarewicz; B. Kozankiewicz; Daniel T. Gryko
Journal of Radioanalytical and Nuclear Chemistry | 2014
Maciej Chotkowski; A. Czerwiński
Journal of Radioanalytical and Nuclear Chemistry | 2017
Maciej Chotkowski; Damian Połomski
Journal of Radioanalytical and Nuclear Chemistry | 2016
Maciej Chotkowski
Annales Universitatis Mariae Curie-Sklodowska, sectio AA – Chemia | 2016
Maciej Chotkowski; A. Czerwiński