Single-Turn Helix–Coil Strands Stabilized by Metal···Metal and π–π Interactions of the Alkynylplatinum(II) Terpyridyl Moieties in meta-Phenylene Ethynylene Foldamers

Autor:	Anthony Yiu-Yan Tam, Chi-Hang Tao, Hoi Shan Chow, Vivian Wing-Wah Yam, Sammual Yu-Lut Leung
Rok vydání:	2011
Předmět:	Steric effects Meta-phenylene ethynylene Stacking General Chemistry Biochemistry Catalysis chemistry.chemical_compound Colloid and Surface Chemistry chemistry Intramolecular force Polymer chemistry Proton NMR Metal metal Terpyridine
Zdroj:	Journal of the American Chemical Society. 134:1047-1056
ISSN:	1520-5126 0002-7863
DOI:	10.1021/ja208444c
Popis:	Dinuclear alkynylplatinum(II) terpyridyl complexes with oligomeric bridge consisting of five repeating meta-phenylene ethynylene (mPE) units have been found to exhibit a strong tendency to fold back onto themselves to form short helical strands through the stabilization of Pt···Pt and π-π interactions. The steric bulk of the terpyridine ligands and the length of the oligomeric bridge have been found to affect the extent of the intramolecular Pt···Pt interaction that governs the stabilization of the short helical strand in solution. Their folding properties via Pt···Pt and π-π stacking interactions have been studied by (1)H NMR, 2D ROESY NMR, electronic absorption, and emission spectroscopies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21dae8c5ae7c087483a97f23065de488 https://doi.org/10.1021/ja208444c Zobrazit plný text záznamu