Tables at a glance

Table 1

Figures at a glance

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Table 1

	HBP10	HBP20	HBP30
¹H NMR	0.55	0.50	0.46
¹³C NMR	0.58	0.48	0.46

Table 1: Branching degree (DB) of different generations HBP calculated from ¹H NMR and ¹³C NMR data

FIGURE 1

Figure 1: Structure features of HBP

FIGURE 2

Figure 2: Structural characterization of HBP. (a) FT-IR spectra of HBP with different generations. (b) 1H NMR spectra of HBP. (c) Partially enlarged view of 1H NMR spectra. (d) 13C NMR spectra of HBP. (e) Partially enlarged view of 13C NMR spectra

FIGURE 3

Figure 3: Ultraviolet absorption spectra of HBP10 (a) with different polar solvent ratios (b) and different solvent concentrations of ethanol

FIGURE 4

Figure 4: Fluorescence spectra of hyperbranched polyester polyols (a) excitation and emission spectra (b) fluorescence emission spectra at different concentrations (c) fluorescence emission spectra at different excitation wavelengths (d) fluorescence intensity changes with HBP10 concentration under 365 nm

FIGURE 5

Figure 5(a): The fluorescence lifetime of HBP (b) CIE chromaticity diagram

FIGURE 6

Figure 6: Effects of different HBP on luminescence intensity

FIGURE 7

Figure 7(a): Influence of different metal ions on HBP30 (ion concentration: 5×10-5 mol/L; HBP30 concentration: 2.5 mg/mL, ethanol used as a solvent). b) Influence of different concentrations of Fe3+ on HBP30 fluorescence intensity. Inset shows the fluorescence of a 2.5 mg/mL HBP30-ethanol solution with 10-3 mol/L of Fe3+ under natural light and a 365 nm ultraviolet light