246258-49-1Relevant academic research and scientific papers
Pt coordination compound containing quinazoline ligands as well as preparation method and application of Pt coordination compound
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, (2017/06/02)
The invention relates to a Pt coordination compound containing quinazoline ligands. The Pt coordination compound is expressed in a general formula [Pt(XYZ)C]B,wherein XYZ is tridentate provided in a formula (1a) or (1b); and C is a monodentate prov
Photooxidation of olefins under oxygen in platinum(II) complex-loaded mesoporous molecular sieves
Feng, Ke,Zhang, Ren-Yuan,Wu, Li-Zhu,Tu, Bo,Peng, Ming-Li,Zhang, Li-Ping,Zhao, Dongyuan,Tung, Chen-Ho
, p. 14685 - 14690 (2008/02/03)
Cyclometalated platinum(II) complex has been successfully incorporated into the (3-aminopropyl) triethoxysilane-modified channels of ordered mesoporous silica SBA-15 that has large pore hexagonal channels. Studies on the 1O2 generation conclusively demonstrates that the olefins in the nano-channels of SBA-15 can be enriched 8 times higher than those in the homogeneous solution as the diffusion quantum yield of singlet oxygen ( 1O2) is assumed to be unit. The platinum(II) complex loaded in the channel of SBA-15 is stable, and the photosensitized oxidation occurs efficiently. No obvious degradation and leaching of photosensitizers is observed even after 10 runs. Only a simple filtration is needed for the recycled use of the expensive noble metal catalysts. This versatile system is a good example of photochemical reactions occurring in the mesoporous silica molecular sieve. SBA-15 not only provides a support for the photosensitizer, but also acts as a nano-reactor to facilitate the photooxidation.
Light-Emitting Tridentate Cyclometalated Platinum(II) Complexes Containing σ-Alkynyl Auxiliaries: Tuning of Photo- and Electrophosphorescence
Lu, Wei,Mi, Bao-Xiu,Chan, Michael C. W.,Hui, Zheng,Che, Chi-Ming,Zhu, Nianyong,Lee, Shuit-Tong
, p. 4958 - 4971 (2007/10/03)
The synthesis and structural, photophysical, electrochemical, and electroluminescent properties of a class of platinum(II) complexes bearing σ-alkynyl ancillary ligands, namely (C/N/N)Pt(C≡C)nR] [H(C/N/N) = 6-aryl-2,2′-bipyridine; n = 1-4; R = aryl, alkyl, or trimethylsilyl], have been studied. Substituents with different steric and electronic properties were introduced into the tridentate cyclometalating and arylacetylide ligands, and the π-conjugation length of the oligoynyl moiety was homologously extended from ethynyl to octatetraynyl. The X-ray crystal structures of several derivatives confirm the Pt-(C≡C) ligation and reveal various intermolecular interactions, such as π-π, Pt...Pt, and C-H...F-C. The complexes display good thermal stability and intense phosphorescence in fluid and glassy solutions with high quantum yields and microsecond lifetimes. Their emission energies are sensitive to solvent polarity, the electronic affinities of the substituents on both the cyclometalating and arylacetylide groups, and the length of the oligoynyl ligand. By choosing appropriate cyclometalating and σ-alkynyl ligands, the emission color of this class of platinum(II) complexes can be tuned from green-yellow to saturated red. In addition to 3MLCT [Pt(5d) → π*(C/N/N)] and 3 IL(C/N/N), intriguing 3IL(alkynyl) excited states localized on -(C≡C)4- and -(C≡Cpyrenyl-1) moieties that afford narrow-bandwidth emissions have been observed. Selected Pt(II) complexes were doped into the emissive region of multilayer, vapor-deposited organic light-emitting diodes. The tunable electrophosphorescence energy resembles that recorded in fluid solutions for these emitters, and the devices exhibit high luminance and efficiencies (up to 4.2 cd A-1).
Probing d8-d8 interactions in luminescent mono- and binuclear cyclometalated platinum(II) complexes of 6-phenyl-2,2′-bipyridines
Lai, Siu-Wai,Chan, Michael Chi-Wang,Cheung, Tsz-Chun,Peng, Shie-Ming,Che, Chi-Ming
, p. 4046 - 4055 (2008/10/08)
A series of luminescent mono- and binuclear cyclometalated platinum(II) complexes, namely [Pt(L1-6)Cl] (1a-6a; HL1-6 = 4-(aryl)-6-phenyl-2,2′-bipyridine; aryl = H (1), phenyl (2), 4-chlorophenyl (3), 4-tolyl (4), 4-methoxyphenyl (5),
