Simultaneous detection of surface coverage by helium atom diffraction and quartz crystal microbalance techniques



Sensitive and quantitative determination of cysteine by surface enhanced raman spectrometry based on their induced aggregates of gold and silver nanostructures
Yüksel, Recep; Volkan, Mürvet; Department of Chemistry (2011)
The synthesis of noble metal nanostructures are an active research area and controlling the shape and the size is a challenging task. In this study, nanostructures with different morphologies were prepared using wet chemical synthesis techniques in the aqueous solutions. Gold and silver nanospheres were produced by reducing and capping agent trisodium citrate. Gold nanorods were synthesized by chemical reduction of HAuCl4 by ascorbic acid in the presence of cetyltrimethylammonium bromide (CTAB), AgNO3, and ...
Surface free energy evaluation, plasma surface modification and biocompatibility studies of PMMA films
Özcan, Cantürk; Hasırcı, Nesrin; Department of Chemistry (2006)
PMMA is a widely used biomaterial especially in the fields of orthopedia, orthodontia and ophthalmology. When biocompatibility is considered, modification of the biomaterials’ surface may be needed to optimize interactions of the biomaterial with the biological environment. After the surface modifications one of the most important changes that occur is the change in the surface free energy (SFE). SFE is an important but an obscure property of the material and evaluation methods with different assumptions ex...
Nano structural metal composites : synthesis, structural and thermal characterization
Kaleli, Kadir; Kayran İşçi, Ceyhan; Department of Chemistry (2008)
In this work , metal functional polymers, namely Cr-PS-b-P2VP, Co-PS-b-P2VP, Au-PS-b-P2VP, Fe-PS-b-P2VP and Mo-PS-b-P2VP were prepared by thermal reaction of hexacarbonylchromium, Cr(CO)6, octacarbonyldicobalt,Co2(CO)8, hydrogentetrachloroaurate(III), H(AuCl4).4H2O, trichloroiron(III), FeCl3.6H2O, molybdenum(VI)oxide, MoO3 and PS-b-P2VP. TEM images indicated formation of AuIII, Cr and Co nanoparticles. On the other hand, crystalline structures were detected for Fe-PS-b-P2VP and Mo-PS-b-P2VP. Samples involvi...
Asymmetric synthesis of chiral camphor fused pyridine type novel organocatalysts
Küçükdişli, Murat; Tanyeli, Cihangir; Department of Chemistry (2009)
Chiral pyridines as organocatalysts have been used in asymmetric organic synthesis in recent years. The asymmetric synthesis of camphor fused pyridine type novel organocatalysts were perfomed starting from cheap and easily available natural (+)-camphor. Using camphor fused pyridine skeleton, six organocatalysts 29, 32, 33, 38, 40, and 41were successfully synthesized. The first four nucleophilic and Lewis base catalysts 29, 32, and 33 are different P-oxides and P,N-dioxides which were tested in allylation of...
Nano structural metal nano composites: synthesis, structural and thermal characterization
Orhan, Tuğba; Kayran, H. Ceyhan; Department of Chemistry (2009)
Recently, the use of block copolymers in preparation of nanocomposites has received great attention as they form well-defined micelles. In this work, the synthesis of different metal functional copolymers, nano structural metal composites and investigation of their reaction mechanism and thermal characteristics by pyrolysis mass spectroscopy have been aimed. Namely, polyisoprene-block-poly2vinylpyridine, (PI-b-P2VP) and poly2vinylpyridine-block-polymetylmethacrylate, (PMMA-b-P2VP) were used as block copolym...
Citation Formats
M. F. Danışman, “Simultaneous detection of surface coverage by helium atom diffraction and quartz crystal microbalance techniques,” ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, pp. 0–0, 2009, Accessed: 00, 2020. [Online]. Available: