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Table 1 Electronic, emission spectral data of complexes 1–4 in H2O at 25 °C

From: Synthesis and characterization of novel rhenium(I) complexes towards potential biological imaging applications

Complex

UV visible absorption/nm

Excitation/nm

Emission/nm

Inter-ligand

MLCT

w[Re(CO)3L1(H2O)]+ (1)

330

420

425

700

a[Re(CO)3L1(H2O)]+ (1)

  

470

710

wRe(CO)3L1Br (2)

328

400

400

480b, 658

w[Re(CO)3L2(H2O)]+ (3)

315

395

441

672

a[Re(CO)3L2(H2O)]+ (3)

  

424

645

wRe(CO)3L2Br (4)

300

396

398

640

aRe(CO)3L2Br (4)

  

396

645

  1. WIn water
  2. aIn acetonitrile
  3. bPeak due to excess ligand