Biology Reference
In-Depth Information
NH
N
NH
N
NH
N
N
HN
N
HN
N
HN
Chlorin
Bacteriochlorin
Isobacteriochlorin
O
H
CH
3
H
N
N
NH
N
Mg
N
HN
N
N
H
3
C
H
3
C
H
H
H
H
O
H
H
O
O
O
PhyO
PhyO
O
O
O
O
Phy =
Pheophytin
a
(a metal-free analog of chlorophyll
a
)
l
abs
= 667 nm (in diethyl ether)
Bacteriopheophytin
a
(a metal-free analog of bacteriochlorophyll
a
)
l
abs
= 748 nm
e
= 52,600 cm
-
1
M
-
1
= 67,600 cm
-
1
M
-
1
e
l
em
= 674 nm
l
em
= 764 nm
F
f
= 0.175, 0.24 (in benzene)
F
f
= 0.126
Ref. 187
Solvent: diethyl ether
Ref. 187
O
NH
N
NH
N
NH
N
N
HN
N
HN
N
HN
Chl-I
O
l
abs
= 637 nm
O
Chl-III
Chl-II
e
not available
l
abs
= 654 nm
l
abs
= 687 nm
l
em
= 689 nm
F
f
= 0.24
t
f
= 7.5 ns
l
em
= 637 nm
e
= not available
e
not available
F
f
= 0.22
l
em
= 660 nm
t
f
= 10 ns
F
f
= 0.30
Solvent: toluene
Refs. 183,185
t
f
= 11.5 ns
Solvent: toluene
Refs. 183,185
FWHM = 12 nm
Solvent: toluene
Ref. 200
O
EtO
O
R
NH
N
NH
N
NH
N
N
HN
N
HN
N
HN
O
BChl-I
R
l
abs
= 731 nm
l
em
= 736 nm
F
f
= 0.20
t
f
= 4.5 ns
O
N
O
R =
BChl-II
R =
CH
3
e
= 130,000
BChl-III
BChl-IV
l
abs
= 750 nm
l
abs
= 768 nm
l
abs
= 818 nm
e
not available
e
not available
l
em
= 754 nm
e
not available
l
em
= 771 nm
Solvent: toluene
Ref. 184
F
f
= 0.17
l
em
= 823 nm
F
f
= 0.11
t
f
= 3.3 ns
F
f
= 0.04
t
f
= 2.9 ns
Solvent: toluene
Ref. 184
t
f
= 1.9 ns
Solvent: toluene
Ref. 184
Solvent: toluene
Ref. 184
Chart 3.7 Structures and optical properties of representative natural and synthetic
hydroporphyrin fluorophores.
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