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. Author manuscript; available in PMC: 2013 Aug 13.
Published in final edited form as: J Phys Chem A. 2007 Oct 5;111(42):10849–10860. doi: 10.1021/jp073197r

Table 2.

Observed Absorption Properties of Dyes 1a–b, 2a–d, 3, 4.

Solvent 3 4 2a, 2b, 2c, 2d, 1a, 1b,
I-TBA I-SO AI-SO(4) AI-BA(4) AI-TBA(4) P-SO(4) P-SO(2) AI-SO(2)
λmax/nm (ε) λmax/nm (εa) λmax/nm (ε) λmax/nm (ε) λmax/nm (ε) λmax/nm (ε) λmax/nm (ε) λmax/nm (ε)
MeOH 583 (173000) 586 (143000) 610 (65000) 585 (83000) 576 (38000) 580 (54000) 505 (57000) 542 (92000)
EtOH - - 636 (83000) 604 (104000) 603 (46000) 557 (61000) 514 (65000) 549 (111000)
i-PrOH - - 648 (122000) 614 (132000) 618 (50000) 597 (68000) 518 (72000) 553 (132000)
BuOH 589 (190000) 587 (134000) 650 (118000) 615 (154000) 619 (53000) 593 (64000) 519 (67000) 554 (120000)
OcOH 590 (180000) 587 (125000) 660 (150000) 628 (143000) 633 (97000) 612 (80000) 524 (72000) 559 (150000)
DMF 589 (183000) 586 (143000) 651 (154000) 625 (146000) 616 (52000) 604 (99000) 522 (92000) 556 (157000)
DMSO - - 644 (118000) 617 (122000) 607 (56000) 599 (77000) 520 (75000) 555 (126000)
CH3CN - - 642 (142000) 621 (141000) 615 (54000) 596 (93000) 546 (89000) 549 (149000)
CH2Cl2 - - 667 (278000) 647 (224000) 655 (104000) 629 (187000) 529 (128000) 561 (218000)
C6H6 584 (127000) 571 (109000) 679 (240000) 662 (201000) 683 (135000) 644 (178000) 538 (169000) 570 (235000)