Journal
ORGANOMETALLICS
Volume 32, Issue 9, Pages 2536-2545Publisher
AMER CHEMICAL SOC
DOI: 10.1021/om301108s
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Funding
- NSFC/China [21132005, 91027005, 20902007]
- Shanghai Shuguang Program [09SG25]
- RFDP of Higher Education of China [20100076110004]
- Fok Ying Tung Education Foundation [131014]
- Program for New Century Excellent Talents in University of Ministry of Education of China [NCET-09-0358]
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The design and self-assembly of novel multipyrene hexagonal metallacycles via coordination-driven self-assembly is described. By employing newly designed 120 degrees dipyridine donor and di-Pt(II) acceptor linkers substituted with pyrene, a variety of tris- and hexakis(pyrene) hexagonal metallacycles with well-defined shape and size were prepared via [3 + 3] and [6 + 6] self-assembly, respectively, under mild conditions in high yields. The structures of these novel metallacycles were well characterized by multinuclear NMR (P-31 and H-1) spectroscopy, cold-spray ionization time-of-flight mass spectrometry (CSI-TOF-MS), electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS), and elemental analysis. The shape and size of all hexagonal metallacycles were investigated by the PM6 semiempirical molecular orbital method. The preliminary study of their spectroscopic behavior was also carried out. It was found that these pyrene-modified metallacycles displayed different optical behaviors, which might be caused by the structural effects.
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