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Table 3 Absorption (λA), fluorescence (λF) maxima (nm) and quantum yield φf (%) of the prepared compounds

From: Microwave assisted synthesis of some new thiazolopyrimidine and pyrimidothiazolopyrimidopyrimidine derivatives with potential antimicrobial activity

Compound

λA

λF

ε, I/Mcm × 104

σa (10−16) cm2

Quantum yield (%) φf

1a

321

2.8

1.07

1b

317

2.9

1.11

1c

299

3.1

1.19

1d

309

2.9

1.11

3a

320

372

3.2

1.23

0.68

3b

325

3.3

1.27

3c

315

3.1

1.19

3d

325

3.0

1.15

5a

326

3.4

1.3

0.63

5b

295

5.8

2.23

6a

320

360

2.3

1.07

6b

325

6.2

2.38

9a

315

5.5

2.11

9b

322

6.5

2.5

10

326

537

7.8

3

0.73