拉伸诱导的自修复铂配合物薄膜的发光变化

Stretch-Induced Luminescent Changes of a Self-Healing Elastic Polymer Functionalized with Platinum Complex

通过接枝含醛基的铂配合物Pt(N^C^N)Cl(N^C^N=1,3-二吡啶基苯)到聚二甲基硅氧烷(PDMS)骨架上,制备了一种弹性橙红色薄膜(PDMS-PtL1)。PDMS-PtL1薄膜具有很好的拉伸性(高达1500%的应变),并表现出较好的室温自修复性能。此外,PDMSPt L1薄膜表现出有趣的拉伸诱导的发光变化,拉伸后可以检测到单分子态铂配合物的~3π-π*发射。该弹性薄膜有效避免了铂配合物发光淬灭的现象,并且实现了外力诱导的发射态转换。

An elastic orange-red film(PDMS-PtL1)has been prepared by grafting formyl-containing Pt(Ⅱ)complex Pt(N^C^N)Cl(N^C^N=1,3-dipyridyl benzene)onto polydimethylsiloxane(PDMS)backbone.The film was highly stretchable(up to 1500%strain)and shows room-temperature self-healing property.Interestingly,stretch-induced luminescent change of the film was observed,where an emission tentatively originating from^3π-π*of separated platinum moieties was detected after stretching.Luminescence quenching is avoided in this elastic film,and the switch of emission state can be realized by changing external forces.CCDC:1966072,L2.