Table 2.

Comparison of ν₁ vibrational band position in resonance Raman spectra of ground and triplet states from protein-bound and other carotenoids

Carotenoid	ν1 (cm−1)	Δν1 (cm−1)
LH2 rhodopin glucoside ground state	1517	24
LH2 rhodopin glucoside triplet	1493
LHCII trimer Lutein1 ground state	1530	18
LHCII trimer Lutein 1 triplet	1512
LHCII trimer Lutein 2 ground state	1526	18
LHCII trimer Lutein 2 triplet	1508
LHCII monomer lutein ground state	1526	18
LHCII monomer lutein triplet	1508
CP29 lutein ground state	1526	18
CP29 lutein triplet	1508
CP43 lutein ground state	1522	18
CP43 lutein triplet	1504
All-trans β-carotene singlet state in THF	1522	25
All-trans β-carotene triplet in THF	1497
All-trans-spheroidene singlet state in n-hexane	1523	23
All-trans-spheroidene triplet in n-hexane	1500

Triplets compared are from rhodopin glucoside in LH2, lutein 1 (ground state of the latter from Ruban et al. (35)) and 2 in LHCII trimers and other carotenoid-containing complexes with all-trans-β-carotene, and other carotenoids, in solution (taken from (29–33,36)).