Highly luminescent and long-term anti-photobleaching Eu(TTA)3(TOP)3 conjugated poly(St-co-DVB-co-NaSS-co-MAA) nanoparticles
作者： Jae Won Lee , Do Kyung Kim
DOI: 10.1016/J.COLSURFA.2016.09.084
关键词:
摘要: Abstract Highly luminescent and stable against photobleaching for a long period, Eu 3+ complexes labelled polymer nanoparticles with quantum yield of 78% are presented. Europium prepared by chelating 4,4,4-trifluoro-1-(2-Thienyl)-1,3-butanedione (TTA) trioctylphosphine (TOP). Poly(St- co -DVB- -NaSS- -MAA) (St = styrene; DVB = divinylbenzene; NaSS; 4-styrenesulfonic acid sodium salt hydrate; MAA = methacrylic acid) diameter 77 nm modified Eu(TTA) 3 (TOP) . Scanning electron microscopy (SEM) results shows that is monodispersed 83 nm. The intensity fractions 5 D 0 → 7 F 2 – 1 EuNPs defines could be existed as more polarized structural states comparatively stronger hypersensitive performance at transition. show the role MAA in this system important to maintain continuous polarization ions because carboxylic group from protects dissociation symmetry around due influence pH or external light source. cell viability PC 12 cells range 10–100 μg/mL concentrations than 70%. Thus, relatively low cytotoxicity concentration
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