Table 1 Photophysical data of compounds M1–6 in different solvents
From: Experimental and theoretical study of donor-π-acceptor compounds based on malononitrile
M | Chloroform | Methanol | Acetonitrile | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
ε, M−1 cm−1 × 104 | λabs | λem | Stokes shift, cm−1 | ε, M−1 cm−1 × 104 | λabs | λem | Stokes shift, cm−1 | ε, M−1 cm−1 × 104 | λabs | λem | Stokes shift, cm−1 | |
M1 | 2.35 | 305 | 377 | 6262 | 3.16 | 306 | 370 | 5653 | 2.35 | 304 (324)a | 341 | 3569 |
M2 | 2.92 | 327 | 392 | 5071 | 2.20 | 323 | 370 | 3933 | 2.76 | 321 (348) | 399 | 6090 |
M3 | 3.05 | 327 | 390 | 4940 | 3.23 | 321 | 372 | 4271 | 3.06 | 321 (434) | 357 | 3141 |
M4 | 6.02 | 432 | 470 | 1872 | 5.77 | 429 | 481 | 2520 | 5.53 | 430 (403) | 485 | 2637 |
M5 | 1.86 | 329 | 475 | 9343 | 1.86 | 322 | 511 | 11,486 | 1.92 | 320 (319) | 496 | 11,089 |
M6 | 2.24 | 369 | 445 | 4628 | 2.16 | 353 | 459 | 6542 | 2.03 | 356 (437) | 469 | 6768 |