Table 1 Some physicochemical parameters of Eu-DTPA and AuNC probes.

From: Exploring tight junction alteration using double fluorescent probe combination of lanthanide complex with gold nanoclusters

Parameters

Eu-DTPA

AuNC@GSH

AuNC@BSA

MA (g/mol)

560.54

1.4 × 104

7.1 × 104

Particle core diameter (nm) (TEM)

—

2.1 ± 0.5

2.0 ± 0.4

Volume weighted hydrodynamic diameter (nm)

0.902

6.0 ± 1.03

12.1 ± 0.33

ζ potential (mV)

—

−1.47 ± 4.96

−7.89 ± 4.38

DAB (m2/S)1

3.36 × 10−10

1.15 × 10−10

6.68 × 10−11

  1. 1Parameters calculated using the Polson’s equation: whereVA is the volume of solute probe; μB and MB are the viscosity and molar mass of the solvent water, respectively; T is the absolute temperature.
  2. 2The diameter of Eu-DTPA was calculated using HyperChem software.
  3. 3Data were from DLS measurement (Figure S5).
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