Table 1 Steady-state absorption and emission spectrum of carotene and carotenal in PS and PEG films.

From: Metal-enhanced fluorescence and excited state dynamics of carotenoids in thin polymer films

Polymer

Absorption (nm)

Emission

Without SIF (nm)

With SIF (nm)

Enhancement

all-trans-β-carotene (carotene)

PS

471, 498

568

550

3.4

PEG

452, 475, 514

585

545

47.3

8′-apo-β-caroten-8′-al (carotenal)

PS

482

595

595

4.0

PEG

453, 496sh

595

585

9.8

  1. shshoulder band.