Toward synthesis of singlet fission exhibiting mesoionic compounds



On-line preconcentration, speciation and determination of chromium by flame atomic absorption spectrometry(faas) and chemiluminescence
Sürdem, Sedat; Volkan, Mürvet; Department of Chemistry (2004)
Toxicological studies have shown that the degree of toxicity of some elements depends on the chemical form in which the element is present. Chromium (III) is considered as an essential micronutrient for human whereas chromium (VI) is a potentially carcinogenic agent. So the speciation of inorganic chromium in environmental samples is required for accurate assessment of pollution levels. The chromium content in natural water is usually very low, and a preconcentration is often necessary prior to the determin...
Exploring representation of nature of science aspects in 9th grade chemistry textbooks
Esmer, Feyza; Geban, Ömer; Department of Secondary Science and Mathematics Education (2011)
The aim of this study was to examine the representation of Nature of Science (NOS) aspects in 9th grade chemistry textbooks. Two textbooks nation-wide used are analyzed, one of them is written in Turkish the other in English. These textbooks were written according to 2008-2009 education program’s curriculum. A qualitative oriented approach was employed and ethnographic content analysis was used as the methodological framework for this research as Irez (2006) has performed. Data were analyzed by means of boo...
Development of new synthetic methodologies for indole derivatives
Kılıklı, Ahmet Alper; Balcı, Metin; Department of Chemistry (2010)
Synthesizing nitrogen containing heterocyclic compounds is one of the leading research areas throughout the organic chemistry due to their significant activities on biological systems. Among the various biologically active molecules, indole derivatives are of prime importance on the grounds of their proven clinical roles. Objective of this study is to synthesize new indole derivatives those may contribute treatment of several diseases like their analogues via a recently developed synthetic methodology. Besi...
In-situ generation of poly(n-vinyl-2-pyrrolidone)-stabilized palladium(0) and ruthenium(0) nanoclusters as catalysts for hydrogen generation from the methanolysis of ammonia-borane
Erdoğan, Huriye; Özkar, Saim; Department of Chemistry (2010)
More attention has been paid to find new type renewable energy sources because of increasing concern about the environmental problems arising from the combustion of fossil fuels as energy sources. The development of new storage materials will facilitate the use of hydrogen as a major energy carrier. Several possibilities exist for ‘‘solid-state’’ storage: the hydrogen can be trapped in metal organic frameworks, carbon nanotubes and certain alloys; or one can use materials in which hydrogen is already presen...
The preparation and characterization of zeolite confined rhodium(0) nanoclusters: a heterogeneous catalyst for the hydrogen generation from the methanolysis of ammonia-borane
Çalışkan, Salim; Özkar, Saim; Department of Chemistry (2010)
Among the new hydrogen storage materials, ammonia borane (AB) appears to be the most promising one as it has high hydrogen content, high stability, and being environmentally benign. Dehydrogenation of AB can be achieved via hydrolysis, thermolysis or methanolysis. Methanolysis of AB eliminates some drawbacks of other dehydrogenation reactions of AB. The use of colloidal and supported particles as more active catalyst than their bulky counterparts for the hydrolysis of AB implies that reducing the particle s...
Citation Formats
G. Ünay and A. Akdağ, “Toward synthesis of singlet fission exhibiting mesoionic compounds,” 2018, vol. 256, Accessed: 00, 2020. [Online]. Available: