240797-81-3Relevant articles and documents
Cation exchange reversibly switches rotor speed and is monitored by a networked fluorescent reporter
?zer, Merve S.,Paul, Indrajit,Goswami, Abir,Schmittel, Michael
, p. 9043 - 9047 (2019)
Framework 1, a freely rotating turnstile, is transformed by sequential metal ion addition into the coordination-based double-minimum rotors [M2(1)]2n+ that operate at 8 kHz (M = Zn2+; n = 2) and 30 kHz (M = Cu+; n = 1). In a network with the fluorescent receptor 2, the metal ion exchange at [M2(1)]2n+ and thus indirectly the rotor speed is reported by distinct fluorescence changes at 2.
Multi-channel receptors and their relation to guest chemosensing and reconfigurable molecular logic gates
Jimenez, Diego,Martinez-Manez, Ramon,Sancenon, Felix,Ros-Lis, Jose V.,Soto, Juan,Benito, Angel,Garcia-Breijo, Eduardo
, p. 2393 - 2403 (2005)
The synthesis and characterisation of a family of multi-channel receptors containing crown-cation binding sites anchored to a 1-aminophenyl-1,2,2- tricyanoethylene group is reported. The ligands L1-L6bear a 1-aminophenyl-1,2,2-tricyanoethylene scaffolding which is simultaneously a redox-active group (showing reduction processes at moderately modest potentials) and an acceptor moiety in the 1-aminophenyl-1,2,2-tricyanoethylene chromophore. Additionally, dyes L1-L6 also show fluorescence emission. The colour variation of L1-L6 in acetonitrile in the presence of the metal cations Ag+, Cd2+, Cu2+, Fe2+, Hg2+, Pb2+ and Zn2+ has been studied. Selective hypsochromic shifts were found for the systems L 4-Pb2+, L5-Hg2+ and L 6-Hg2+ For Hg2+ with L5 and L 6 and Pb2+ with L4, emission fluorescence enhancements most likely associated with metal coordination to the anilinium nitrogen were observed. The electrochemical behaviour of receptors L 1-L6 was studied in acetonitrile with platinum as working electrode and [Bu4N][BF4] as supporting electrolyte. This family of receptors shows a one-electron reversible reduction process at around -0.70 V vs. SCE, attributed to the reduction of the tricyanovinyl group. Additionally, all the receptors also show the oxidation of the anilinium moiety at about 1.2-1.4 V vs. SCE. Significant anodic shifts of both reduction and oxidation waves were found in the presence of certain metal cations. The relationship of these multiple-channel signalling receptors with guest chemosensing and reconfigurable molecular-based logic gates is discussed. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005.
Solvent effect and amine interference on colorimetric changes of azobenzene-conjugated dithiaazadioxo crown ether mercury sensor
Jeon, Chang Hoon,Lee, Jayeon,Ahn, Sang Jung,Ha, Tai Hwan
, p. 6841 - 6847 (2019/04/10)
The colorimetric behavior of an azobenzene-based dye containing dithiaazadioxo ring for Hg2+-detection was investigated in diverse solvents. The mercury specific ligand shows hypsochromic changes in pure and aqueous MeCN upon Hg2+-bi
A near IR di-styryl BODIPY-based ratiometric fluorescent chemosensor for Hg(II)
Atilgan, Serdar,Kutuk, Ilker,Ozdemir, Tugba
supporting information; experimental part, p. 892 - 894 (2010/05/03)
A novel BODIPY-based near-IR emitting probe as a selective and sensitive fluorophore for Hg(II) is synthesized. This versatile BODIPY fluorophore is functionalized for long wavelength emission at the 3 and 5 positions via a condensation reaction in which