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    Benzimidazole-hydrazone derivatives: synthesis, in vitro anticancer, antimicrobial, antioxidant activities, in silico DFT and ADMET studies
    (Elsevier, 2022) Işık, Ayşen; Çevik, Ulviye Acar; Çelik, İsmail; Bostancı, Hayrani Eren; Karayel, Arzu; Gündoğdu, Gülsüm; İnce, Ufuk; Koçak, Ahmet; Özkay, Yusuf; Kaplancıklı, Zafer Asım
    The Austrian statesman Metternich is widely recognized as a leading actor in European affairs in the first half of the nineteenth century. What has been surprisingly neglected is the long-lasting impact of his nationality policy, which he devised and partly implemented within the context of restoring order after the upheavals of the French Revolution and the Napoleonic Wars. The devastation and dislocations caused by two decades of warfare gave rise to a critical historical juncture in which Metternich took the lead to form a counterrevolutionary regime and to pursue what can be termed his empire project. A state modernizer, he devised an intellectually elaborate conservative response to the French Revolution that rested on his distinction between supposedly natural nationalities and artificial nationalism. The resulting idiosyncratic governance of empire fostered a vertical integration of societies-in-the-making through the expansion of state infrastructures, while at the same time determining horizontal fragmentation along provincial and linguistic lines. Metternich's nationality policy helped to create the ideational and institutional foundations of modern nation-building across Central and Southeastern Europe. Its legacy outlasted the monarchy and is reflected in the distinctive culturalist tradition of nationhood in post-Habsburg Central Europe.
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    Enantioselective synthesis of 2,3-dihydrofurans using a bifunctional quinine/squaramide organocatalyst
    (Royal Society of Chemistry, 2022) Susam, Zeynep Dilşad; Bozdemir, Merve; Gündoğdu, Gülsüm
    Asymmetric organocatalytic domino type Michael-S(N)2 reactions give access to enantiomerically enriched dihydrofuran derivatives that can be used as valuable chiral building blocks. A variety of alpha-bromonitroalkenes and 1,3-dicarbonyl compounds were allowed to react under optimized conditions, in the presence of a bifunctional quinine-derived sterically encumbered squaramide (H-bond donor) organocatalyst. The conditions developed in this article have great advantages over the methods known in the literature in terms of reaction duration (1-6 h vs. 24-96 h) and reaction temperature (room temperature vs. -20 degrees C to -50 degrees C) giving rise to quite diastereoselective products with good enantioselectivities up to 97% ee.
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    Photocatalytic water oxidation with a Prussian blue modified brown TiO2
    (2021) Gündoğdu, Gülsüm; Ulusoy Ghobadi, T. Gamze; Sadigh Akbari, Sina; Özbay, Ekmel; Karadaş, Ferdi
    A recently emerging visible light-absorbing semiconductor, brown TiO2 (b-TiO2), was coupled with a CoFe Prussian blue (PB) analogue to prepare an entirely earth-abundant semiconductor/water oxidation catalyst hybrid assembly. PB/b-TiO2 exhibits a sevenfold higher photocatalytic water oxidation activity compared to b-TiO2. An elegant band alignment unified with the optical absorption of b-TiO2 and excellent electronic dynamics of PB yield a high-performance photocatalytic system.