A series of Pt^II complexes featuring 1,2,3-triazole-derived N^∧N^∧N-, N^∧C^∧N- and C^∧N^∧C-coordinating ligands were studied both experimentally and computationally aiming at the design of new Pt^II phosphors. By virtue of click chemistry, the new complexes were readily functionalized, e.g., with bulky groups in order to suppress aggregation of the complexes. For a N^∧C^∧N-type cyclometalated Pt^II complex, the high energy of the π* orbitals of the 1,2,3-triazole units gave rise to deep-blue phosphorescence; the poor luminescence quantum yield was attributed to an inadequate energy separation between the emissive state and the d–d states. However, when the 1,2,3-triazole donor moiety acted as a spectator/ancillary ligand only, an intense green emission could be achieved (Φ_PL = 0.57, τ = 4.6 μs).

中文翻译：

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Pt ^II荧光粉与单击衍生的含1,2,3-三唑的三齿螯合物

一系列的Pt ^II络合物设有1,2,3-三唑源性氮^∧ Ñ ^∧ N-，N ^∧ Ç ^∧ N-和C- ^∧ Ñ ^∧ C-配位配体进行了实验和研究计算针对新的设计Pt ^II荧光粉。借助点击化学，新的配合物易于被官能化，例如具有庞大的基团，以抑制配合物的聚集。上N ^∧ Ç ^∧ N型环金属化的Pt ^II配合物，1,2,3-三唑单元的π*轨道的高能引起深蓝色磷光。较差的发光量子产率归因于发射态与d-d态之间的能量分离不充分。然而，当1,2,3-三唑供体部分充当旁观者/辅助配体只，强烈的绿色发射可以实现（Φ _PL = 0.57，τ= 4.6微秒）。