Chiral molecular squares based on angular bipyridines: Self-assembly, characterization, and photophysical properties

Suk Joong Lee, Jason S. Kim, Wenbin Lin

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Chiral molecular squares 1-12 based on [M(dppe)]2+ metallocorners (M = Pd or Pt, and dppe = bis-(diphenylphosphino)ethane) and new angular bipyridine bridging ligands derived from the 1,1′-binaphthyl framework were readily assembled and characterized by a variety of techniques including infrared, UV-vis, circular dichroism (CD), and NMR spectroscopy, and ESI mass spectrometry. All these chiral metallocycles are highly luminescent in solution at room temperature with quantum efficiency of 0.06-0.63. Interestingly, when equal molar enantiopure molecular squares of opposite handedness were mixed in solution, a new meso dimeric metallocycle with C 2 symmetry formed. This result indicates the lability of the M-pyridyl bonds in these metallocycles, which may hinder their applications in many enantioselective processes.

Original languageEnglish
Pages (from-to)6579-6588
Number of pages10
JournalInorganic Chemistry
Volume43
Issue number21
DOIs
Publication statusPublished - 2004 Oct 18
Externally publishedYes

Fingerprint

Self assembly
self assembly
Circular dichroism spectroscopy
handedness
Functional Laterality
Electrospray Ionization Mass Spectrometry
Circular Dichroism
Quantum efficiency
ethane
Nuclear magnetic resonance spectroscopy
dichroism
Mass spectrometry
quantum efficiency
Magnetic Resonance Spectroscopy
mass spectroscopy
Ligands
Infrared radiation
nuclear magnetic resonance
ligands
Temperature

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

Cite this

Chiral molecular squares based on angular bipyridines : Self-assembly, characterization, and photophysical properties. / Lee, Suk Joong; Kim, Jason S.; Lin, Wenbin.

In: Inorganic Chemistry, Vol. 43, No. 21, 18.10.2004, p. 6579-6588.

Research output: Contribution to journalArticle

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