Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Jerzy Romiszewski"'
Publikováno v:
New J. Chem.. 38:2927-2934
We report new mesogens made of thiophene and stilbene moieties as main building blocks that exhibit nematic and/or smectic phases. The liquid crystalline properties of their thiophene/azobenzene analogues have been found to be strongly suppressed com
Publikováno v:
Tetrahedron. 68:8172-8180
We present a synthesis and mesomorphic properties of a new series of rod-like mesogens. All the compounds possess a substituted 2-aminothiophene unit as a main element in the structure attached to a stilbene moiety with a terminal alkyloxy chain (OR1
Autor:
Jerzy Romiszewski, Joanna Kowalewska, Paulina Krzyczkowska, Adam Krówczyński, Jadwiga Szydłowska, Damian Pociecha
Publikováno v:
Molecular Crystals and Liquid Crystals. 558:93-101
The new Ni(II) metallomesogenes were synthesized. Their mesogenic cores are constructed from tetradental enaminoketone unit connected to 1,2:3,4-di(4,5-dioctyloxybenzo)phenazine or 2,3-di(3,4-dioctyloxyphenylo)quinoxaline. The described compounds for
Autor:
Krzysztof Nawara, Jerzy Romiszewski, Paweł Krysiński, Andrzej Twardowski, Jacek Szczytko, Krystyna Kijewska, Maciej Mazur
Publikováno v:
The Journal of Physical Chemistry C. 116:5598-5609
We have synthesized citric-acid-stabilized magnetic nanoparticles with very good magnetization behavior and relatively low contribution from shape and surface magnetic anisotropies. In this work, w...
Autor:
Marek Grzybowski, Jerzy Romiszewski, Mikhail Drobizhev, Ewa Gorecka, Maciej Chotkowski, Aleksander Rebane, Geoffrey Wicks, Daniel T. Gryko, Agnieszka Nowak-Król
Publikováno v:
Chemical Communications. 49:8368
A π-extended bis-porphyrin bridged via a diketopyrrolopyrrole unit was prepared in 5 steps. This fully conjugated π-system displays strongly distorted linear absorption, while its two-photon absorption cross-section reaches 2500-3000 GM at 940 nm.
Autor:
Joy E. Haley, Dominik Koszelewski, Craig J. Wilson, Ewa Gorecka, Jerzy Romiszewski, Agnieszka Nowak-Król, Harry L. Anderson, Thomas M. Cooper, Aleksander Rebane, Mikhail Drobizhev, Daniel T. Gryko
Publikováno v:
Journal of Materials Chemistry C. 1:2044
A large and diverse library of trans-A2B2 and A 2BC-porphyrins possessing two arylethynyl substituents at the meso positions has been efficiently synthesized and tested for their two-photon absorption (2PA) behavior. All compounds fall into three gen
Autor:
Ewa Gorecka, Jerzy Romiszewski, Damian Pociecha, Jozef Mieczkowski, Monika Gora, Michał Wójcik
Publikováno v:
Soft Matter. 7:10561
Gold nanoparticles grafted with promesogenic ligands show temperature induced liquid crystalline polymorphism with unique phase sequence: from smectic to columnar structure. The transition is entropy driven; with increasing temperature ligands attach
Publikováno v:
Journal of Physics: Condensed Matter. 19:116206
The enthalpy of seven polymorphs of AgF2 has been scrutinized up to 50 GPa using density functional theory (DFT) calculations. We show that α-AgIIF2 (Pbca, with its puckered-sheet structure and an elongated octahedral 4+2 coordination of Ag) transfo