Synthesis and Properties of Aromatic Compounds

The electronic structure of the recently synthesized ($3\ifmmode\times\else\texttimes\fi{}3$) reconstructed silicene on ($4\ifmmode\times\else\texttimes\fi{}4$) Ag(111) is investigated by first-principles calculations. New states emerge due to the strong hybridization between silicene and Ag. Analyzing the nature and…

• SEYMUR JAHANGIROV

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• SÜLEYMAN EDİZ

Of the five small biradicaloid heterocycles whose S(1), S(2), T(1), and T(2) adiabatic excitation energies were examined by the CASPT2/ANO-L-VTZP method, two have been found to meet the state energy criterion for efficient singlet fission and are recommended to the attention of synthetic chemists and photophysicists.

• AKIN AKDAĞ

Silica or SiO(2), the main constituent of Earth's rocks has several 3D complex crystalline and amorphous phases, but it does not have a graphitelike layered structure in 3D. Our theoretical analysis and numerical calculations from the first principles predict a single-layer honeycomblike allotrope, hα silica, which ca…

• SEYMUR JAHANGIROV

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• ŞERİFE BURCU BOZKURT ALTINDAĞ

A new type of water-soluble copper-containing polymer has been synthesized using the technique of subcomponent self-assembly. Copper(I)-directed imine bond formation between triethylene glycol functionalized 1,2-phenylenediamine and 2,9-diformylphenanthroline subcomponents resulted in the formation of a chain in which…

• DEMET ASİL ALPTEKİN

Cryptoannulenic behavior of cyclacenes has been investigated within the framework of Hückel molecular orbital theory. It has been found that the angle of total π-electron energy for cyclacenes, as it is the case for annulenes, alternatingly fluctuates within the series depending on the size and type of the peripheral…

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• EMRULLAH GÖRKEM GÜNBAŞ

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If G is a graph on n vertices, and di is the degree of its i-th vertex, then the Randic matrix of G is the square matrix of order n whose (i, j)-entry is equal to 1/ � di dj if the i-th and j-th vertex of G are adjacent, and zero otherwise. This matrix in a natural way occurs within Laplacian spectral theory, and prov…

• AHMET SİNAN ÇEVİK

A convergent, multistep protocol was employed for the synthesis of a Janus-type multivalent donor-acceptor system. The synthetic approach is based on a Sonogashira cross-coupling of two differently ferrocene-(Fc) substituted dendrons and a final sixfold [2 + 2] cycloaddition-retroelectrocyclization (CA-RE) reaction wi…

• ÇAĞATAY DENGİZ

Cyclophosphazenes are a fascinating group of inorganic heterocyclic compounds whose rings are constituted by the repetition of phosphorus and nitrogen atoms. They have received particular attention due to their easy functionalization and thermal stability and as an excellent core for the preparation of advanced materi…

• SERKAN YEŞİLOT