Sebile Işik Büyükekşi

Bülent Ecevit Üniversitesi · Department of Chemistry

We have synthesized a new zinc(II)-phthalocyanine (ZnPc) incorporating hydroxyl groups at the peripheral positions. This new zinc(II)-tetra-hydroxyphthalocyanine (1) has been characterized by high-resolution MALDI TOF MS, UV-Vis, FT-IR (ATR), and ¹H- and ¹³C-NMR techniques, and further by the electrochemical measurements. DFT and TD-DFT computation...

Recent advances in practical applications of metallophthalocyanines (MPcs) at different technological fields have stimulated us to design and synthesize a new asymmetric AB3-type trimeric zinc(II)-phthalocyanine (1). This bulky and high molecular weight compound was characterized by elemental analysis, ¹H, ¹³C DEPT, and ¹H-¹H NOESY NMR, HR MALDI-TO...

A versatile synthetic building block, 2-amino-1,10-phenanthrolin-1-ium chloride (L∙HCl) was synthesized and characterized by IR, 1H and 13C NMR DEPT analysis, UV/Vis and single-crystal X-ray diffraction technique. The molecular geometry, vibrational wavenumbers and gauge including atomic orbital (GIAO), 1H and 13C NMR chemical shifts values of the...

To understand the influence of transition metal ion coordination on the properties and performance of the triads, the symmetric bridging ligand, 1,10-phenanthroline-perylene diimide-1,10-phenanthroline, 1,10-Phen-PDI-1,10-Phen (1) comprising four electron-donating 4-methoxyphenoxy bulky groups at bay-positions and its corresponding square-planar co...

A new dinuclear coordination compound of palladium(II), [Pd2(terpy)2(μ‐tas‐N¹,N⁴)]SO4⋅11H2O (1), was synthesized by tethering a doubly deprotonated 1,2,4‐triazole‐3‐sulfonate (tas) linker generated in situ via oxidation of 1,2,4‐triazole‐3‐thione (tat) under the synthetic conditions. X‐ray diffraction analysis reveals that tat molecules adopt the t...

Perylene diimides (PDIs) are among the most versatile and functional dyes for supramolecular structures displaying characteristic high absorptions and photo-luminescence properties as the prerequisite for optoelectronic thin film devices. Despite intense investigations on these semi-conducting and electro-active materials, details of their electron...

A novel clamshell-type binuclear zinc(II) phthalocyanine (2) was synthesized by cross condensation of the bisphthalonitrile (1) with 4-tert-butylphthalonitrile and zinc acetate in 1:10:4 ratio. The structure of the novel compound was characterized by elemental analysis, UV-vis, FT-IR (ATR), HR MALDI-TOF mass, 1H NMR, 13C DEPT NMR and 1H-1H COSY NMR...

In this study, a bis-chelating bridging perylene diimide ditopic ligand, namely N,N'-di(1,10-phenanthroline)-1,6,7,12-tetrakis-(4-methoxyphenoxy)perylene tetracarboxylic acid diimide (1) was synthesized and characterized. Further reactions of 1 with d⁸ metal ions such as Pt(II) and Pd(II) having preferential square-planar geometry afforded the nove...

Herein, novel silicon (IV) phthalocyanines peripherally substituted by triethylene glycol groups and bearing axial hydroxyl groups were synthesized and fully characterized by using different analyses techniques. The photophysical and photochemical properties of octa (2a) and tetra (2b) derivatives were investigated in DMF and DMSO. The effect of oc...

symmetrically and unsymmetrically modified perilen diimide (PDI) with chelating ligand phen to obtain hybrid systems for PVs

1,6,7,12-tetrakis-(4-methoxyphenoxy)perylene-3,4,9,10-tetracarboxylic dianhydride was functionalized to possess imidazole ligating sites at the imide positions, namely N,N0-bis(3-propylimidazole)-1,6,7,12- tetrakis-(4-methoxyphenoxy)perylene diimide (PDI-1). By using metal ion-ligand coordination approach, self-assembly of newly synthesized ditopic...

Monomeric and Si-Si bonded dimeric silicon(IV) phthalocyanines bearing 4′,7′,10′-trioxaundecylsulfanyl groups were synthesized. These novel phthalocyanine derivatives were characterized by general analysis methods such as FT-IR, MALDI-TOF or HRMS, ¹H NMR and UV-vis electronic absorption. Their aggregation behaviors were described in dimethyl sulfox...

Synthesis of Bay Substituted PDI Derivatives for PVs Substitution reaction of tetrachloro-PDI and also tetrabromo-PDI with 4-hydroxyphthalonitrile and 4-amino-phthalonitrile in different media. The effect of parameters such as reaction temperature, reaction time, base, solvent, microwave synthesis and also leaving groups have been investigated and...

A phthalocyanine-chalcone conjugate was previously reported to retain the full photodynamic activity of the phthalocyanine and a slightly lowered antivascular effect of the chalcone. Assuming that it was due to an insufficient release of the chalcone, we described here several grafting modes applied to the preparation of phthalocyanine-chalcone con...