A DFT/TDDFT study on spectral effects of metal ion interactions with benzofurazan-based fluorescent probes
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dc.type
JournalArticle
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dc.description.physical
27-34
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dc.abstract.en
CAM-B3LYP DFT/TDDFT calculations have been performed on two fluorescent benzofurazan derivatives
and their complexes with metal ions (Zn
2+
,Na
+
,K
+
,Mg
2+
and Ca
2+
). Optimized structures of complexes
and binding energies have been determined. Calculated vertical transition energies have been compared
to available experimental data. Only one ligand binds effectively Zn
2+
ion allowing metal orbitals to par-
ticipate in frontier molecular orbitals which results in significant shifts in absorption and emission spec-
tra. Modified structure of the other ligand makes ion binding less effective. It has been shown that proper
reproduction of transition energies requires accounting for state-specific solvation.
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dc.subject.en
TDDFT
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dc.subject.en
spectral shifts
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dc.subject.en
ion complexation
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dc.subject.en
solvation effects
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dc.description.volume
98
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dc.description.points
25
pl
dc.identifier.doi
10.1016/j.saa.2012.08.019
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dc.identifier.eissn
1873-3557
pl
dc.title.journal
Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
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dc.language.container
eng
pl
dc.affiliation
Wydział Chemii : Zakład Metod Obliczeniowych Chemii