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Browsing by Author "Karakuş, Erman"
Now showing items 1-18 of 18
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A BODIPY aldoxime-based chemodosimeter for highly selective and rapid detection of hypochlorous acid
Emrullahoğlu, Mustafa; Üçüncü, Muhammed; Karakuş, Erman (Royal Society of Chemistry, 2013-09)A BODIPY-based fluorescent probe integrated with an aldoxime unit shows a remarkable fluorescence "turn-on" response to hypochlorous acid (HOCl). The oxidative dehydrogenation of BODIPY aldoxime by HOCl results in a distinct ... -
BODIPY-Au(I): A photosensitizer for singlet oxygen generation and photodynamic therapy
Üçüncü, Muhammed; Karakuş, Erman; Kurulgan Demirci, Eylem; Sayar, Melike; Dartar, Suay; Emrullahoğlu, Mustafa (American Chemical Society, 2017-05)Upon complexation with Au(I), a photoinactive BODIPY derivative was transformed into a highly photoactive triplet sensitizer. Along with high efficiency in singlet oxygen generation (φδ = 0.84), the new BODIPY-Au(I) skeleton ... -
A BODIPY-based fluorescent probe for ratiometric detection of gold ions: Utilization of: Z -enynol as the reactive unit
Üçüncü, Muhammed; Karakuş, Erman; Emrullahoğlu, Mustafa (Royal Society of Chemistry, 2016)Using an irreversible intramolecular cyclisation pathway triggered by gold ions, a boron-dipyrromethene (BODIPY) based fluorescent probe integrated with a reactive Z-enynol motif responds selectively to gold ions. With the ... -
A BODIPY/pyridine conjugate for reversible fluorescence detection of gold(III) ions
Üçüncü, Muhammed; Karakuş, Erman; Emrullahoğlu, Mustafa (Royal Society of Chemistry, 2015)We designed a "turn-on" type fluorescent probe based on a BODIPY-pyridine conjugate which exhibits high selectivity towards Au(iii) ions and, also responds to changes in the pH within the acidic pH range. The probe offers ... -
Determination of force-free wet adhesion of mussel-inspired polymers to spin labeled surface
Kırpat, İklima; Göksel, Yaman; Karakuş, Erman; Emrullahoğlu, Mustafa; Akdoğan, Yaşar (Elsevier, 2017-10)Hydration repulsive forces oppose the adhesive interactions, especially in the force-free conditions. Here, we studied spontaneous wet adhesion of 3,4-dihydroxyphenylalanine (DOPA) functionalized poly(ethylene glycol) (PEG) ... -
Electrophilic cyanate as a recognition motif for reactive sulfur species: Selective fluorescence detection of H2S
Karakuş, Erman; Üçüncü, Muhammed; Emrullahoǧlu, Mustafa (American Chemical Society, 2016-01-05)An ESIPT-based fluorescent dye, 3-hydroxyflavone, is chemically masked with an electrophilic cyanate motif in order to construct a fluorescent probe for cellular sulfur species. This novel probe structure, displays an ... -
Fluorescein propiolate: a propiolate- decorated fluorescent probe with remarkable selectivity towards cysteine
Karakuş, Erman; Sayar, Melike; Dartar, Suay; Kaya, Beraat Umur; Emrullahoğlu, Mustafa (Royal Society of Chemistry, 2019)A fluorescent probe decorated with an alkynyl ester unit (e.g. propiolate) displayed a selective turn-on type fluorescent response towards cysteine. Following a sequential addition-cyclisation pathway mediated by the ... -
A fluorescein-based chemodosimeter for selective gold(III) ion monitoring in aqueous media and living systems
Çetintaş, Ceyla; Karakuş, Erman; Üçüncü, Muhammed; Emrullahoǧlu, Mustafa (Elsevier, 2016-10-29)We constructed a turn-on type chemodosimeter based upon a fluorescein scaffold for the rapid, selective detection of gold(III) ions over other metal species. This novel probe structure offers distinct features including ... -
A guanidinium modified rhodamine-based fluorescent probe for in vitro/vivo imaging of gold ions
Karakuş, Erman; Çakan Akdoğan, Gülçin; Emrullahoǧlu, Mustafa (Royal Society of Chemistry, 2015-10-07)We devised a rhodamine-based fluorescent probe functionalized with a guanidinium moiety, which both operates efficiently in pure aqueous media and displays a selective fluorescence response to Au3+ ions. We also demonstrated ... -
Palladium-catalyzed alkoxycarbonylation of (Z)-2-En-4-yn carbonates leading to 2,3,5-trienoates
Akpınar, G. Eray; Kuş, Melih; Üçüncü, Muhammed; Karakuş, Erman; Artok, Levent (American Chemical Society, 2011-02-18)Pd(0)-catalyzed carbonylation of (Z)-2-en-4-yn carbonates in the presence of a balloon pressure of CO in an alcohol donates vinylallenyl esters with an exclusively E-configuration and in high yields. The fact that no such ... -
A rare γ-pyranopyrazole skeleton: Design, one-pot synthesis and computational study
Üçüncü, Muhammed; Cantürk, Ceren; Karakuş, Erman; Zeybek, Hüseyin; Bozkaya, Uğur; Soydaş, Emine; Şahin, Ertan; Emrullahoğlu, Mustafa (Royal Society of Chemistry, 2016)Drawing upon a consecutive amide coupling and intramolecular cyclisation pathway, a one-pot, straightforward synthetic route has been developed for a range of pyrazole fused γ-pyrone derivatives. The reaction mechanism ... -
A ratiometric fluorescent probe for gold and mercury ions
Üçüncü, Muhammed; Karakuş, Erman; Emrullahoǧlu, Mustafa (Wiley, 2015-09)A fluorescent probe that displays a ratiometric fluorescence response towards gold and mercury ions has been devised. Emitting at a relatively longer wavelength, the conjugated form of the fluorescent dye transforms in the ... -
A rhodamine based "turn-on" chemodosimeter for monitoring gold ions in synthetic samples and living cells
Emrullahoğlu, Mustafa; Karakuş, Erman; Üçüncü, Muhammed (Royal Society of Chemistry, 2013-07)A rhodamine-based fluorescent probe, functionalized with an alkyne moiety, shows highly selective recognition towards Au(i) and Au(iii) ions over other metal ions. Probe 1 is successfully employed for the determination of ... -
Rhodamine-immobilised electrospun chitosan nanofibrous material as a fluorescence turn-on Hg2+ sensor
Horzum, Nesrin; Mete, Derya; Karakuş, Erman; Üçüncü, Muhammed; Emrullahoğlu, Mustafa; Demir, Mustafa M. (Wiley-VCH Verlag, 2016-04)A turn-on fluorescence sensing system for mercuric (Hg2+) ions relying on a modified rhodamine B–chitosan fluorophore moiety was developed. This novel sensing approach relies on the simultaneous electrospinning of chitosan ... -
A rhodamine/BODIPY-based fluorescent probe for the differential detection of Hg(ii) and Au(iii)
Karakuş, Erman; Üçüncü, Muhammed; Emrullahoǧlu, Mustafa (Royal Society of Chemistry, 2014-02)We described the design and synthesis of a molecular sensor based on a rhodamine/BODIPY platform that displayed differential fluorescence responses towards Hg2+ and Au3+ and demonstrated its utility in intracellular ion imaging. -
Rhodium- and palladium-catalyzed 1,5-substitution reactions of 2-En-4-yne acetates and carbonates with organoboronic acids
Üçüncü, Muhammed; Karakuş, Erman; Kuş, Melih; Akpınar, Gürkan Eray; Aksın Artok, Özge; Krause, Norbert; Karaca, Sıla; Nuran, Elmacı; Artok, Levent (American Chemical Society, 2011-08)Two methods involving the rhodium-catalyzed reaction of 2-en-4-yne acetates and the palladium-catalyzed reaction of 2-en-4-yne carbonates with organoboronic acids were investigated; both afforded exclusively the (E)-configured ... -
Rhodium-catalyzed reactions of (Z)-2-EN-4yne acetates with arylboronic acids
Karakuş, Erman (İzmir Institute of Technology, 2011)This study is the first example of rhodium(I)-catalyzed arylative SN2ʺ type reaction of (Z)-2-en-4-yne acetates with arylboronic acids leading to E-configured vinyl-allenes with an aryl moiety. The coordinative interaction ... -
The utilization of pH sensitive spirocyclic rhodamine dyes for monitoring D-fructose consumption during a fermentation process
Karakuş, Erman; Üçüncü, Muhammed; Eanes, Ritchie C.; Emrullahoğlu, Mustafa (Royal Society of Chemistry, 2013-09)The colorimetric and fluorometric detection of d-fructose was achieved by employing a two component sensing system composed of an arylboronic acid as the host molecule and a pH sensitive spirocyclic rhodamine dye as the ...
