Zinc-Specific Fluorescent Response of Tris(isoquinolylmethyl)amines (isoTQAs)
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https://figshare.com/articles/dataset/Zinc_Specific_Fluorescent_Response_of_Tris_isoquinolylmethyl_amines_isoTQAs_/2553217
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资源简介：
Isoquinoline-based tetradentate ligands with C3-symmetry, tris(1- or 3-isoquinolylmethyl)amine
(1- or 3-isoTQA), have been
prepared and their zinc-induced fluorescence
enhancement was investigated. Upon excitation at 324 nm,
1-isoTQA shows very weak fluorescence (ϕ = ∼0.003) in
DMF/H2O (1/1) solution. In the presence of zinc ion, 1-isoTQA
exhibits fluorescence increase (ϕ = 0.041)
at 359 and 470 nm. This fluorescence enhancement at 470
nm is specific for zinc. However, 3-isoTQA exhibited a smaller fluorescence
enhancement upon zinc complexation (ϕ = 0.017, λem = 360 and 464 nm) compared with 1-isoTQA. Crystal structures of
zinc complexes of isoTQAs demonstrate the diminished steric crowding
and shorter Zn–Naromatic distances compared with
isoTQENs (N,N,N′,N′-tetrakis(isoquinolylmethyl)ethylenediamines)
leads to a higher fluorescent response toward zinc relative to cadmium.
创建时间：
2012-02-06
