Lanthanide Loading of Luminescent Multi-Tridentate Polymers under Thermodynamic Control
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https://figshare.com/articles/dataset/Lanthanide_Loading_of_Luminescent_Multi_Tridentate_Polymers_under_Thermodynamic_Control/2031195
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资源简介：
This
work illustrates the use of basic statistical mechanics for rationalizing
the loading of linear multitridentate polymers with trivalent lanthanides,
Ln(III), and identifies the specific ionic sizes of europium and yttrium
as promising candidates for the further design of organized heterometallic
f–f′ materials. Using [Ln(hfac)3] (hfac =
hexafluoroacetylacetonate) as lanthanide carriers, the thermodynamically
controlled formation of Wolf type-II lanthanidopolymers [{Ln(hfac)3}m(L4)] is modeled
with the help of two simple microscopic descriptors: (i) the intrinsic
affinity of Ln(III) for the tridentate binding sites fN3Ln and (ii)
the intermetallic interactions ΔE1–2Ln,Ln operating
between two occupied adjacent sites. Selective complexation (fN3La ≪ fN3Eu > fN3Y) modulated by anticooperative
interactions (ΔE1–2La,La ≃ ΔE1–2Eu,Eu > ΔE1–2Y,Y ≈ 0) favors the fixation of
Eu(III) in semiorganized lanthanidopolymers [{Eu(hfac)3}m(L4)] displaying exploitable
light-downshifting.
创建时间：
2015-12-17
