含9-丁基咔唑基二炔/聚炔汞及二炔金配合物的合成与性质

Synthesis and Properties of Hg Diyne/Poly-yne and Au Diyne Complexes Containing 9-Butylcarbazole Unit

合成了9-丁基咔唑基聚炔汞聚合物[—HgC≡CRC≡C—]n及其二聚体[M eHgC≡CRC≡CHgM e]和金的二聚体[(PPh3)AuC≡CRC≡CAu(PPh3)](R=9-丁基咔唑基).用1H NMR,13C NMR,31P NMR,FTIR,FAB-MS,UV-V is,F luorescence及Phosphorescence光谱对其进行了表征.结果表明,体系中金和汞产生的重原子效应可以促进单线激发态S1与三线激发态T1的系间跃迁,使标题化合物产生有机三线态发光.

Three new d^10 Hg and Au poly-yne and its diyne containing 9-butylcarbazole unit were synthesized by dehydrohalogenation reactions and characterized by 1^H NMR, 13^C NMR, 31^P NMR, FTIR, FAB-MS, UV- Vis, fluorescence and phosphorescence spectroscopies. All the compounds were analytically and spectroscopically characterized to possess a well-defined size and structure. The materials are organic-soluble and solutionprocessable. The results show that the organic triplet emission can be harvested by the heavy-atom effect induced by Au and Hg which can efficiently promote the intersystem transition from the St singlet excited state to the T1 triplet excited state. The relationship between the T1 energy state and the intersystem transition for the system was discussed. It is envisioned that a structure-property-function relationship can be established and valuable insight into the photophysical nature of conjugated materials can be subsequently derived.