Photoluminescence of platinum complex [PtII(4,7-diphenyl-1,10-phenanthroline)(CN)2] in solution

Abstract

Scheme 11. Oxidative Cyclization of Unsymmetrical Dienoates and Enantioselective Synthesis of an Ionophore Fragment .. 12 t7 "OMOM 6) Evans Aldol (56%) 1 4 13

Switching between Ligand‐to‐Ligand Charge‐Transfer, Intraligand Charge‐Transfer, and Metal‐to‐Ligand Charge‐Transfer Excited States in Platinum(II) Terpyridyl Acetylide Complexes Induced by pH Change and Metal Ions

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Indeed, these complexes have demonstrated promise for various applications, including optical power limiting, [20][21][22] electroluminescence, [13,[23][24][25][26] as photosensitizers for the generation of singlet oxygen [27] or hydrogen, [28] as molecular probes for biological macromolecules, [12,29] and as optical sensors. [17,18,[30][31][32][33][34] In particular, platinum(II) complexes bearing terpyridyl and acetylide ligands have been extensively investigated in view of their rich photophysical properties.…”

Structural, Photophysical, and Electrophosphorescent Properties of Platinum(II) Complexes Supported by Tetradentate N2O2 Chelates

“…The N 2 O 2 ligand framework is devised with chemically inert functionalities and the considerable chelate effect should ensure good thermal stability. Phenyl and tert-butyl substituents are appended to the Pt(N 2 O 2 ) moiety, since coordinatively unsaturated squareplanar Pt II compounds are known to engage in excited-state and exciton self-quenching reactions in solution [11] and EL devices, [12] respectively. The nature of these substituents may therefore yield emitting layers with different quenching behavior as well as other relevant physical properties.…”

Self-assembly of alkynylplatinum(II) terpyridine amphiphiles into nanostructures via steric control and metal–metal interactions

“…Detailed analysis of temperature-dependent UV-visible absorption spectra of the nanostructured tubular aggregates also provided insights into the assembly mechanism and showed the role of metal−metal interactions in the cooperative supramolecular polymerization of the amphiphilic platinum(II) complexes. noncovalent interactions | platinum complex | nanoaggregates S quare-planar d 8 platinum(II) polypyridine complexes have long been known to exhibit intriguing spectroscopic and luminescence properties (1-54) as well as interesting solid-state polymorphism associated with metal−metal and π−π stacking interactions (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)25). Earlier work by our group showed the first example, to our knowledge, of an alkynylplatinum(II) terpyridine system [Pt(tpy)(C ≡ CR)] + that incorporates σ-donating and solubilizing alkynyl ligands together with the formation of Pt···Pt interactions to exhibit notable color changes and luminescence enhancements on solvent composition change (25) and polyelectrolyte addition (26).…”