15617-19-3Relevant articles and documents
Giant Concentric Metallosupramolecule with Aggregation-Induced Phosphorescent Emission
Li, Yiming,Huo, Gui-Fei,Liu, Bingqing,Song, Bo,Zhang, Yuan,Qian, Xiaomin,Wang, Heng,Yin, Guang-Qiang,Filosa, Alexander,Sun, Wenfang,Hla, Saw Wai,Yang, Hai-Bo,Li, Xiaopeng
supporting information, p. 14638 - 14648 (2020/09/15)
Fluorescent metallosupramolecules have received considerable attention due to their precisely controlled dimensions as well as the tunable photophysical and photochemical properties. However, phosphorescent analogues are still rare and limited to small structures with low-temperature phosphorescence. Herein, we report the self-assembly and photophysical studies of a giant, discrete metallosupramolecular concentric hexagon functionalized with six alkynylplatinum(II) bzimpy moieties. With a size larger than 10 nm and molecular weight higher than 26000 Da, the assembled terpyridine-based supramolecule displayed phosphorescent emission at room temperature. Moreover, the supramolecule exhibited enhanced aggregation-induced phosphorescent emission compared to the ligand by tuning the aggregation states through intermolecular interactions and significant enhancement of emission to CO2 gas.
Synthesis and properties of new phosphorescent red light-excitable platinum(II) and palladium(II) complexes with schiff bases for oxygen sensing and triplet-triplet annihilation-based upconversion
Borisov, Sergey M.,Saf, Robert,Fischer, Roland,Klimant, Ingo
, p. 1206 - 1216 (2013/04/10)
New Pt(II) and Pd(II) complexes with donor-acceptor Schiff bases are conveniently prepared in only two steps. The complexes efficiently absorb in the red part of the spectrum (ε > 105 M-1 cm -1) and show moderate to strong
Novel tailoring reaction for two adjacent coordinated nitriles giving platinum 1,3,5-triazapentadiene complexes
Gushchin, Pavel V.,Tyan, Marina R.,Bokach, Nadezhda A.,Revenco, Mikhail D.,Haukka, Matti,Wang, Meng-Jiy,Lai, Cheng-Hsuan,Chou, Pi-Tai,Kukushkin, Vadim Yu.
, p. 11487 - 11500 (2009/04/25)
The tailoring reaction of the two adjacent nitrile ligands in cis-[PtCl2(RCN)2] (R = Me, Et, CH2Ph, Ph) and [Pt(tmeda)(EtCN)2][SO3CF3]2 (8·(OTf)2; tmeda = N,N,N′,N′- tetramethylethylenediamine) upon their interplay with N,N′- diphenylguanidine (DPG; NH=C(NHPh)2), in a 1:2 molar ratio gives the 1,3,5-triazapentadiene complexes [PtCl2{NHC(R)NHC(R)=NH}] (1-4) and [Pt(tmeda){NHC(Et)NHC(Et)NH}][SO3CF3]2 (10·(OTf)2), respectively. In contrast to the reaction of 8·(OTf)2 with NH=C(NHPh)2, interaction of 8·(OTf)2 with excess gaseous NH3 leads to formation of the platinum(II) bis(amidine) complex cis-[Pt(tmeda){NH=C(NH 2)Et}2][SO3CF3]2 (9·(OTf)2). Treatment of trans-[PtCl2(RCN) 2] (R = Et, CH2Ph, Ph) with 2 equiv of NH=C(NHPh) 2 in EtCN (R = Et) and CH2Cl2 (R = CH 2Ph, Ph) solutions at 20-25°C leads to [PtCl{NH=C(R)NC(NHPh)=NPh} (RCN)] (11-13). When any of the trans-[PtCl2(RCN)2] (R = Et, CH2Ph, Ph) complexes reacts in the corresponding nitrile RCN with 4 equiv of DPG at prolonged reaction time (75°C, 1-2 days), complexes containing two bidentate 1,3,5-triazapentadiene ligands, i.e. [Pt{NH=C(R)NC(NHPh)=NPh}2] (14-16), are formed. Complexes 14-16 exhibit strong phosphorescence in the solid state, with quantum yields (peak wavelengths) of 0.39 (530 nm), 0.61 (460 nm), and 0.74 (530 nm), respectively. The formulation of the obtained complexes was supported by satisfactory C, H, and N elemental analyses, in agreement with FAB-MS, ESI-MS, IR, and 1H and 13C{1H} NMR spectra. The structures of 1, 2, 4, 11, 13, 14, 9· (picrate)2, and 10·(picrate) 2 were determined by single-crystal X-ray diffraction.
