Comparative analysis of the PET and ICT sensor properties of 1,8-naphthalimides containing aza-15-crown-5 ether moiety
摘要:
Novel 4-amino- and 4-(acetyl)amino-N-aryl-1,8-naphthalimides containing aza-15-crown-5 ether receptor unit in the N-aryl fragment and at C-4 of the naphthalimide residue were designed and prepared. Significant internal charge transfer from electron donating amino or amido group at C-4 of the naphthalene ring to the acceptor carboxyimide moiety as well as photoinduced electron transfer between N-aryl receptor and the naphthalimide fragment was revealed by the UV/Vis absorption spectroscopy and considerable fluorescence quenching. The addition of calcium perchlorate to an acetonitrile solution of naphthalimides with the receptor at imide nitrogen hindered the photoinduced electron transfer process and accordingly restored the quenched fluorescence of the free ligands. In the case of the compound in which the aza-15-crown-5 receptor is located at C-4, the coordination with Ca2+ reduced the internal charge transfer interaction in the chromophore and caused a significant blue-shift of the absorption and emission peak. The observed spectral effects were analyzed using PM6 semiempirical calculations. Formation of complexes was also confirmed by H-1 NMR spectroscopy. (c) 2013 Elsevier Ltd. All rights reserved.
Comparative analysis of the PET and ICT sensor properties of 1,8-naphthalimides containing aza-15-crown-5 ether moiety
摘要:
Novel 4-amino- and 4-(acetyl)amino-N-aryl-1,8-naphthalimides containing aza-15-crown-5 ether receptor unit in the N-aryl fragment and at C-4 of the naphthalimide residue were designed and prepared. Significant internal charge transfer from electron donating amino or amido group at C-4 of the naphthalene ring to the acceptor carboxyimide moiety as well as photoinduced electron transfer between N-aryl receptor and the naphthalimide fragment was revealed by the UV/Vis absorption spectroscopy and considerable fluorescence quenching. The addition of calcium perchlorate to an acetonitrile solution of naphthalimides with the receptor at imide nitrogen hindered the photoinduced electron transfer process and accordingly restored the quenched fluorescence of the free ligands. In the case of the compound in which the aza-15-crown-5 receptor is located at C-4, the coordination with Ca2+ reduced the internal charge transfer interaction in the chromophore and caused a significant blue-shift of the absorption and emission peak. The observed spectral effects were analyzed using PM6 semiempirical calculations. Formation of complexes was also confirmed by H-1 NMR spectroscopy. (c) 2013 Elsevier Ltd. All rights reserved.
FRET versus PET: ratiometric chemosensors assembled from naphthalimide dyes and crown ethers
作者:Pavel A. Panchenko、Yuri V. Fedorov、Olga A. Fedorova、Gediminas Jonusauskas
DOI:10.1039/c5cp03510d
日期:——
Crown-containing naphthalimide dyads exhibited a ratiometric fluorescence response in the presence of metal cations and protons resulting from the competition between PET and FRET processes.
Hybrid sensor materials based on tin(IV) oxide and crown-containing 4-amino-1,8-naphthalimides
作者:Pavel A. Panchenko、Yury V. Fedorov、Olga A. Fedorova、Boris A. Izmailov、Valery A. Vasnev、Vladislav V. Istratov、Ekaterina A. Makeeva、Marina N. Rumyantseva、Alexander M. Gaskov
DOI:10.1016/j.mencom.2011.01.005
日期:2011.1
The cation-dependent spectral properties of crown-containing 4-aminonaphthalimide derivatives have been studied in an acetonitrile solution and within hybrid materials based on tin dioxide; these compounds can be of interest for producing fluorescent sensors for metal ions.
Comparative analysis of the PET and ICT sensor properties of 1,8-naphthalimides containing aza-15-crown-5 ether moiety
作者:Pavel A. Panchenko、Yuri V. Fedorov、Olga A. Fedorova、Gediminas Jonusauskas
DOI:10.1016/j.dyepig.2013.03.008
日期:2013.9
Novel 4-amino- and 4-(acetyl)amino-N-aryl-1,8-naphthalimides containing aza-15-crown-5 ether receptor unit in the N-aryl fragment and at C-4 of the naphthalimide residue were designed and prepared. Significant internal charge transfer from electron donating amino or amido group at C-4 of the naphthalene ring to the acceptor carboxyimide moiety as well as photoinduced electron transfer between N-aryl receptor and the naphthalimide fragment was revealed by the UV/Vis absorption spectroscopy and considerable fluorescence quenching. The addition of calcium perchlorate to an acetonitrile solution of naphthalimides with the receptor at imide nitrogen hindered the photoinduced electron transfer process and accordingly restored the quenched fluorescence of the free ligands. In the case of the compound in which the aza-15-crown-5 receptor is located at C-4, the coordination with Ca2+ reduced the internal charge transfer interaction in the chromophore and caused a significant blue-shift of the absorption and emission peak. The observed spectral effects were analyzed using PM6 semiempirical calculations. Formation of complexes was also confirmed by H-1 NMR spectroscopy. (c) 2013 Elsevier Ltd. All rights reserved.