Platinum complexes solvatochromic

Figure 2.17 Solvatochromic ionic cr-alkynyl platinum(II) terpyridine complexes...

In the same regard, platinum(II) terpyridyl complexes (18) earn attention too. For the derivatives with X = Ph, the low-energy bands (460-600 nm) are assigned to formal LLCT states that receive substantial contribution from closely lying MLCT levels. When X = Me or Cl, luminescence of much red-shift (680-800 nm) is from MMLCT owing to metal-metal interactions occurring in head-to-tail dimers or polymers.In a recent study, large solvatochromism of the diynyl complexes (X = C C=C-C=CH), presumably due to metal-metal and -stacked interactions, has been observed. The cyclometallated phenyl bipyridine complexes (19) also show tunable excited-state properties, and the dinuclear species can reflect the metal - metal interactions in the [da ... 

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