Table 1 Optical properties and energy band parameters of DAST crystal, DAST@HPβCD fiber, and DAST@HPβCD thin film

From: Durable organic nonlinear optical membranes for thermotolerant lightings and in vivo bioimaging

Materials

λabs[a]

[nm]

λem[b]

[nm]

τ1/ratio

[ns]

τ2/ratio

[ns]

Eg[c]

[eV]

HOMO[d]

[eV]

LUMO[e]

[eV]

PLQY

[%]

DAST

578,661

615,746

2.284/61.49

5.529/38.51

1.61

−5.21

−3.60

0.9

DAST@HPβCD fiber

457

583

2.999/100

0/0

1.97

−5.56

−3.59

70.4

DAST@HPβCD thin film

466

575

2.878/100

0/0

2.15

−5.33

−3.18

73.5

  1. [a] UV-vis absorption peak and [b] PL peak derived from DAST crystals, DAST@HPβCD fibers, and DAST@HPβCD thin films measured at room temperature; τ1/ratio and τ2/ratio are double/single-exponential PL lifetime and corresponding proportion, respectively; [c] Optical energy gap (Eg) determined from the UV-Vis absorption spectra (Supplementary Fig. 13); [d and e] Calculated HOMO and LUMO positions from cyclic voltammetry measurement (Supplementary Fig. 12).
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