75817-94-6

Upstream product

• 75818-00-7 2,6-Bis-(4-dodecyl-phenyl)-pyranylium; perchlorate 
• 6313-88-8 4-dodecylacetophenone 
• 122-51-0 orthoformic acid triethyl ester 

Downstream Products

• 81740-35-4 C₈₂H₁₂₀O₂⁽¹⁺⁾*BF₄^(1-) 
• 81740-36-5 C₈₂H₁₂₀O₂⁽¹⁺⁾*ClO₄^(1-) 
• 81740-37-6 C₈₂H₁₂₀O₂⁽¹⁺⁾*C₁₂H₄N₄^(1-) 

Relevant academic research and scientific papers

Synthesis and Redox Properties of Mesogene pi -Donors.

In the sequence of previous work on 2,2 prime ,6,6 prime -tetraaryl-4,4 prime -bipyrannylidene and their sulfur analogs, the authors report the synthesis (Scheme 1 and 2) and redox properties of heterocycles having long chain substituents. Introduction of four alkyl groups C//nH//2//n// plus //1 in the para position of the phenyl groups leads to pi -donors having mesomorphic (disco-like) properties (n greater than 9). In contrast, the presence of alkyloxy substituents leads only to mesomorphic species when the heteroatom is S but not O (n greater than equivalent to 12). All new donors give stable 1:1 charge transfer complex with TCNQ, several of them having also mesomorphic properties.

A Discotic Mesophase with Binary or Tetragonal Symmetry

The 2,2',6,6'-tetra-arylpipyran-4-ylidenes (1b) and (1c), disk-like molecules with a novel core and four n-alkyl side chains, exhibit a discotic mesophase which allows either four- or two-fold symmetry.