Design and synthesis of a low-band gap perylene imides

Asumadu-Sarkodie, Samuel


Taşar, Cansu; Ercan, Batur; Department of Metallurgical and Materials Engineering (2022-8-18)
Different compositions of bioactive glass nanoparticles have been investigated for various applications, including cancer treatment, drug delivery, bone regeneration, etc. However, targeting of bioactive glass nanoparticles to desired tissues still remains to be a challenge. In this research, sol-gel synthesized bioactive glass and superparamagnetic iron oxide nanoparticles (SPIONs) were combined using two different approaches to obtain magnetic bioactive glass nanoparticle composites. In the first ap...
Design and characterization of a dual-band perfect metamaterial absorber for solar cell applications
Rufangura, Patrick; Sabah, Cumali (2016-06-25)
This paper proposes a metamaterial absorber design for solar energy harvesting using a simplified and symmetric structure. A unit cell of this design consists of three important layers namely, the bottom metallic layer, which is gold lossy, the intermediate layer: made of a lossy dielectric material that is gallium arsenide and patches which formed by a combination of gold and gallium arsenide. These three important layers are being carefully arranged at the top of a dielectric spacer. The geometric structu...
Synthesis of calcium hydroxyapatite-tricalcium phosphate (HA-TCP) composite bioceramic powders and their sintering behavior
Kivrak, N; Tas, AC (1998-09-01)
Composite (biphasic) mixtures of two of the most important inorganic phases of synthetic bone applications-namely, calcium hydroxyapatite (Ca-10(PO4)(6)(OH)(2) (HA)) and tricalcium phosphate (Ca-3(PO4)(2) (TCP))-were prepared as submicrometer-sized, chemically homogeneous, and high-purity ceramic powders by using a novel, one-step chemical precipitation technique. Starting materials of calcium nitrate tetrahydrate and diammonium hydrogen phosphate salts that were dissolved in appropriate amounts in distille...
Design and Synthesis of Pyrrolotriazepine Derivatives: An Experimental and Computational Study
Menges, Nurettin; Sari, Ozlem; Abdullayev, Yusif; Erdem, Safiye Sag; Balcı, Metin (American Chemical Society (ACS), 2013-06-07)
The pyrrole derivatives having carbonyl groups at the C-2 position were converted to N-propargyl pyrroles. The reaction of those compounds with hydrazine monohydrate resulted in the formation of 5H-pyrrolo[2,1-d][1,2,5]-triazepine derivatives. The synthesis of these compounds was accomplished in three steps starting from pyrrole. On the other hand, attempted cyclization of a pyrrole ester substituted with a propargyl group at the nitrogen atom gave, unexpectedly, the six-membered cyclization product, 2-amin...
Estimation of lining thickness around circular shafts
Ozturk, H; Unal, E (2001-06-22)
In this paper, the broken zone developing, around a circular mine shafts and lining pressure is estimated by integrating the results of numerical analysis and the "rock-load height" equation derived from empirical analysis. During numerical modelling studies, the computer program FLAC(2D) was utilized. In order to estimate equivalent Mohr failure Envelope from the generalised Hoek Brown failure criterion, a new FISH function was written within FLAC(2D). Parametric studies were carried out by considering mRM...
Citation Formats
S. Asumadu-Sarkodie, “Design and synthesis of a low-band gap perylene imides,” M.S. - Master of Science, Middle East Technical University, 2016.