8 Red and Near-IR Fluorescent Two-Photon Absorption Dyes
301
N
S
N
N
N
 310 GM at 900 nm (THF/water (1:99, v/v), aggregate),
 em 636 nm,  F 0.385 (THF/water (1:9, v/v), aggregate),
 em 630 nm (water, AIE dot)
52
N
N
N
R
O
NC
CN
N
R
48: R = H
49: R =
51
N
N
N
R'
R'
R'
R'
CN
R =
R' =
CN
N
 6.7 x10
5 GM at 810 nm (based on dot unit),
 em 671 nm,  F 0.24 (water, AIE dot)
N
NC
48:  2.3 x 10
6 GM at 820 nm (based on dot unit),
 em 684 nm,  F 0.13 (water, AIE dot),
49:  313 GM at 830 nm,  em 680 nm,  F 0.125 (water, AIE dot)
N
N
O
53
 10 GM at 1,040 nm,  em 649 nm,
 F 0.082 (THF/water (1:99, v/v), aggregate)
R
N
N
O
O
R
 8,100 GM at 800 nm,  F 0.001 (chloroform, monomer),
 5.34 x 10
5 GM at 810 nm (based on dot unit),
 em 627 nm,  F 0.12 (water, AIE dot)
50
Fig. 8.16 Red fluorescent TPA dyes 48–53 incorporated into nanoparticle dots