Novel helical assembly of a Pt(II) phenylbipyridine complex directed by metal-metal interaction and aggregation-induced circularly polarized emission

被引：78

作者：

Ikeda, Toshiaki ^{[1
]}

Takayama, Midori ^{[1
]}

Kumar, Jatish ^{[2
]}

Kawai, Tsuyoshi ^{[2
]}

Haino, Takeharu ^{[1
]}

机构：

[1] Hiroshima Univ, Grad Sch Sci, Dept Chem, Higashihiroshima 7398526, Japan

[2] Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300192, Japan

来源：

DALTON TRANSACTIONS | 2015年 / 44卷 / 29期

关键词：

PI-CONJUGATED MOLECULES; PLATINUM(II) COMPLEXES; ORGANOPLATINUM(II) COMPLEXES; METALLOPHILIC INTERACTIONS; SUPRAMOLECULAR ASSEMBLIES; FUNCTIONAL MATERIALS; ISOXAZOLE LIBRARY; CHIRAL MEMORY; LUMINESCENCE; PORPHYRIN;

D O I：

10.1039/c5dt01284h

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Pt(II) phenylbipyridine complexes possessing bis(phenylisoxazolyl)phenylacetylene ligands self-assembled to form stacked aggregates via Pt-Pt, pi-pi stacking, and dipole-dipole interactions. The assembled structures were influenced by the solvent properties. Non-helical assemblies found in chloroform displayed metal-metal-to-ligand charge transfer absorption and emission, whereas helical assemblies formed in toluene showed aggregation-induced enhancement of emission and aggregation-induced circularly polarized luminescence. The rates of the association and dissociation of the assemblies were significantly reduced in toluene, and the non-helical structures formed in chloroform were surprisingly memorized.

引用

页码：13156 / 13162

页数：7

共 70 条

[11] Self-assembly of tris(phenylisoxazolyl) benzene and its asymmetric induction of supramolecular chirality [J].