Göknur Yaşa Atmaca

Bio: Göknur Yaşa Atmaca is an academic researcher from Yıldız Technical University. The author has contributed to research in topics: Singlet oxygen & Phthalocyanine. The author has an hindex of 14, co-authored 38 publications receiving 488 citations.

Electrochemistry and Photoluminescence of Icosahedral Carboranes, Boranes, Metallacarboranes, and Their Derivatives

Abstract: Icosahedral boranes, carboranes, and metallacarboranes are extraordinarily robust compounds with desirable properties such as thermal and redox stability, chemical inertness, low nucleophilicity, and high hydrophobicity, making them attractive for several applications such as medicine, nanomaterials, molecular electronics, energy, catalysis, environmental chemistry, and other areas. The hydrogen atoms in these clusters can be replaced by convenient groups that open the way to a chemical alternative to conventional "organic" or "organometallic" realms. Icosahedral boron cluster derivatives have been reviewed from different perspectives; however, there is a need for a review dedicated to the redox and photophysical characteristics of easily accessible borane and carborane derivatives, which are excellent materials for a wide range of applications. This review deals with the redox properties and photoluminescence behavior of this collection of compounds, as well as their influence on the properties of materials and devices whose working principles are related to electron-transfer or electron-promotion phenomena. We hope that this review will be of great value to boron cluster scientists and researchers working in the photoluminescence and electrochemistry fields who are interested in exploring the possibilities of these unique and promising systems.

Bifunctional Magnetic Supramolecular-Organic Framework: A Nanoprobe for Simultaneous Enrichment of Glycosylated and Phosphorylated Peptides

Abstract: Protein glycosylation and phosphorylation are two important protein post-translational modifications. Mass spectrometry (MS) has been proved to be a powerful technique in comprehensive characterization of protein glycosylation and phosphorylation; however, the complexity of biological matrices and weak ionization efficiency bring a big challenge. Capturing glycopeptides and phosphopeptides from complicated biological samples is indispensable before MS determinations. In this study, a bifunctional gallium ion immobilized magnetic pertriflated pillar[5]arene supramolecular-organic framework (magOTfP5SOF-Ga3+) was designed for the one-step simultaneous enrichment of glycopeptides and phosphopeptides. Thanks to the abundant sulfonic acid groups, the material owns strong hydrophilicity and leads to hydrophilic interaction chromatography for glycopeptides enrichment. Simultaneously, the high loading amount of gallium ion provides immobilized metal ion affinity for phosphopeptides enrichment. The established platform possesses quick magnetic response performance, high sensitivity (detection limits as low as 0.1 fmol and 0.05 fmol for glycopeptides and phosphopeptides, respectively), and good reusability. In addition, the method was applied to the determination of glycopeptides and phosphopeptides in clinical specimens, cell lysates, and mouse liver tissue samples, demonstrating its highly sensitive and specific glycoproteomics and phosphorproteomics analysis in complex biosamples.