Influence of Polarity of Solvents on the Spectral Properties of Bichromophoric Coumarins
Abstract
:1. Introduction
2. Results and Discussion
Substrate a | chloroform | methanol | |||||||
---|---|---|---|---|---|---|---|---|---|
λA b nm | Logε c dm3mol−1 cm−1 | λF nm | Φr(A) e | τf ns | λA b nm | Logε c dm-3mol−1 cm−1 | λFd nm | Φr(A) e | |
1 | 432 | 3.98 | 480 | 4.27 | 0.7 | 440 | 4.099 | 475 | 0.55 |
2 | 436 | 4.40 | 487 | 1.91 | 1.7 | 436 | 4.586 | 505 | 4.11 |
3 | 333 | 4.21 | 400 | 0.18 | 329 | 4.331 | 433 | 0.14 | |
4 | 356 | 4.59 | 405 | 0.05 | 352 | 4.352 | 438 | 0.09 | |
5 | 350 | 4.22 | 426 | 0.82 | 2.1 | 337 | 4.308 | 437 | 0.17 |
6 | 356 | 4.280 | 425 | 1.37 | 1.4 | 356 | 4.280 | 449 | 0.22 |
7 | 440 | 4.69 | 474 | 13.96 | 2.3 | 440 | 4.450 | 494 | 0.40 |
8 | 338 | 4.73 | 403 | 9.93 | 3.1 | 352 | 4.823 | 433 | 3.04 |
Substrate a | PMMA | ||||
λA b nm | λFc nm | Δυ d cm−1 | Φr(A) e | Τ f ns | |
1 | 432 | 474 | 2 050 | 9.2 | 3.1 |
2 | 435 | 507 | 3 265 | 8.6 | 2.7 |
3 | 333 | ||||
4 | 356 | 432 | 4 994 | 0.8 | 1.4 |
5 | 348 | 405 | 4 404 | 0.53 | 2.0 |
6 | 356 | 418 | 3 398 | 0.72 | 1.7 |
7 | 438 | 477 | 1 866 | 7.57 | 4.0 |
8 | 342 | 399 | 4 177 | 3.53 | 2.6 |
Substrate a | PS | ||||
λA b nm | λFc nm | Δυ d cm−1 | Φr(A) e | Τ f ns | |
1 | 433 | 461 | 1 403 | 3.7 | 1.5 |
2 | 432 | 484 | 2 487 | 3.4 | 1.9 |
3 | 334 | ||||
4 | 357 | 436 | 5 075 | 0.3 | 0.7 |
5 | 349 | 404 | 3 900 | 0.4 | 1.7 |
6 | 356 | 420 | 4 046 | 0.6 | 1.4 |
7 | 438 | 480 | 1 908 | 5.2 | 2.3 |
8 | 339 | 389 | 3 792 | 3.7 | 2.3 |
Substrate a | PVC | ||||
λA b nm | λFc nm | Δυ d cm−1 | Φr(A) e | Τ f ns | |
1 | 432 | 486 | 2 520 | 0.4 | 2.6 |
2 | 432 | 510 | 3 540 | 2.5 | 2.8 |
3 | 336 | ||||
4 | 357 | 436 | 5 075 | 0.1 | 1.6 |
5 | 350 | 404 | 3 820 | 0.1 | 2.8 |
6 | 359 | 423 | 4 214 | 0.1 | 2.3 |
7 | 445 | 480 | 1 639 | 1.0 | 4.3 |
8 | 338 | 400 | 4 586 | 0.92 | 1.9 |
3. Experimental
3.1. Synthesis of Complex Coumarins
3.2. Spectral Measurements
4. Conclusions
Acknowledgements
- Sample Availability: Samples of the compounds are available from authors.
References and Notes
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Hrdlovic, P.; Donovalova, J.; Stankovicova, H.; Gaplovsky, A. Influence of Polarity of Solvents on the Spectral Properties of Bichromophoric Coumarins. Molecules 2010, 15, 8915-8932. https://doi.org/10.3390/molecules15128915
Hrdlovic P, Donovalova J, Stankovicova H, Gaplovsky A. Influence of Polarity of Solvents on the Spectral Properties of Bichromophoric Coumarins. Molecules. 2010; 15(12):8915-8932. https://doi.org/10.3390/molecules15128915
Chicago/Turabian StyleHrdlovic, Pavol, Jana Donovalova, Henrieta Stankovicova, and Anton Gaplovsky. 2010. "Influence of Polarity of Solvents on the Spectral Properties of Bichromophoric Coumarins" Molecules 15, no. 12: 8915-8932. https://doi.org/10.3390/molecules15128915