Journal ArticleDOI
Hydrazones Derived from Dithiamonoaza and Tetrathiamonoaza Analogs of Polyethers as Silver Ion Selective Ionophores: Syntheses, Proton-Dissociation Behaviors, and Metal Ion Complexing Properties in 1,4-Dioxane–Water Acidic Solution
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In this article, cyclic and acyclic dithiamonoaza analogs of polyethers bearing a hydrazone moiety on nitrogen atom(s) were synthesized.Abstract:
Cyclic and acyclic dithiamonoaza, tetrathiamonoaza, and tetrathiadiaza analogs of polyethers bearing a hydrazone moiety on nitrogen atom(s) were synthesized. Their acidity constants in 1,4-dioxane–water solution and stability constants of hydrazones derived from dithiamonoaza and tetrathiamonoaza analogs of polyethers for some heavy metal ions in same acidic media were measured spectrophotometrically. Hydrazones of cyclic and acyclic tetrathiamonoaza series had highly Ag+-selective complexability.read more
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Selective Manipulation of ICT and PET Processes in Styryl-Bodipy Derivatives: Applications in Molecular Logic and Fluorescence Sensing of Metal Ions
O. Altan Bozdemir,Ruslan Guliyev,Onur Buyukcakir,Sencer Selcuk,Safacan Kolemen,Gulcihan Gulseren,Tugrul Nalbantoglu,Hande Boyaci,Engin U. Akkaya +8 more
TL;DR: The results suggest that different metal ions can be used as nonannihilating inputs, selectively targeting various ligands incorporated within a single fluorophore, and with careful design, diverse photophysical processes can be selectively modulated, resulting in a range of signals, useful in molecular logic design, and offering an enticing potential for multianalyte chemosensors.
Journal ArticleDOI
Design strategies for ratiometric chemosensors: modulation of excitation energy transfer at the energy donor site.
TL;DR: Clear advantages emerge compared to the acceptor site modulation: unaltered emission wavelength in the red end of the visible spectrum, while keeping a large Stokes shift and the ratiometric character.
Journal ArticleDOI
Chalcone-Analogue Dyes Emitting in the Near-Infrared (NIR): Influence of Donor−Acceptor Substitution and Cation Complexation on Their Spectroscopic Properties and X-ray Structure
TL;DR: In this paper, the photophysical properties of newly synthesized 1-benzothiazole-3-(4-donor)-phenyl-substituted prop-2-en-1-ones were studied as a function of solvent polarity, temperature, and metal ion by employing steady-state and time-resolved spectroscopy.
Journal ArticleDOI
Substituted 1,5-Diphenyl-3-benzothiazol-2-yl-Δ2-pyrazolines: Synthesis, X-ray Structure, Photophysics, and Cation Complexation Properties
TL;DR: In this paper, the spectroscopic properties of 1-phenyl-3-benzothiazol-2-yl-5-(4-R)-phenyl)-Δ2-pyrazolines are strongly dependent on both the electronic nature of the substituent and solvent polarity.
Journal ArticleDOI
Synthesis and metal-ion binding properties of monoazathiacrown ethers.
Mutsuo Tanaka,Makoto Nakamura,Tomokazu Ikeda,Kiyomi Ikeda,Hisanori Ando,Yasuhiko Shibutani,Setsuko Yajima,Keiichi Kimura +7 more
TL;DR: Synthetic procedures for monoazathiacrown ethers were explored, and an interesting ability to bind Mg(2+) was observed in the case of N-dodecyl monoazatrithia-12-crown-4.
References
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Journal ArticleDOI
Chromo- and fluoroionophores. A new class of dye reagents
Hans Gerd Loehr,Fritz Voegtle +1 more
Journal ArticleDOI
Ligandstruktur und Komplexierung, L. Ionenselektive Farbstoffkronenether
Johannes Peter Dix,Fritz Vögtle +1 more
TL;DR: In this paper, an ion-selective crown ether system with an ionenselektives Kronenether system, the complexation of which with cations influences the ground and excited states of the chromophore to a different extent, have been synthesized.
Journal ArticleDOI
Mercury(II) and silver(I) ion-selective electrodes based on dithia crown ethers
Ming-Tain Lai,Jeng-Shang Shih +1 more
TL;DR: In this paper, a crown ether ion-selective PVC membrane electrodes based on 1,4-dithia-12-crown-4 and 1, 4-didthia-15crown5 as neutral carriers were successfully developed for Hg2+ and Ag+, respectively.
Journal ArticleDOI
High-specificity thiacrown ether reagents for silver(I) over bivalent mercury and lead. Thermodynamic and carbon-13 NMR relaxation time studies
Journal ArticleDOI
Macrocyclic polyamino polythiaether ligands with NxS4-x and NxS5-x donor sets: protonation constants, stability constants, and kinetics of complex formation with the aquocopper(II) ion
Bryan C. Westerby,Kerri L. Juntunen,Gregory H. Leggett,Virginia B. Pett,Michael J. Koenigbauer,Mark D. Purgett,Michael J. Taschner,L. A. Ochrymowycz,David B. Rorabacher +8 more
TL;DR: The entire series of 14-membered macrocyclic ligands containing the N x S 4-x donor set (where x=1, 2, 3) with alternating ethylene and propylene bridging groups was characterized in terms of their protonation constants, Cu(II) complex stability constants, and complex formation kinetics with aquocopper ion in aqueous solution at 25°C as mentioned in this paper.