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A Spin‐Active, Electrochromic, Solvent‐Free Molecular Liquid Based on Double‐Decker Lutetium Phthalocyanine Bearing Long Branched Alkyl Chains
Author(s) -
Zielinska Agnieszka,
Takai Atsuro,
Sakurai Hiroya,
Saeki Akinori,
Leonowicz Marcin,
Nakanishi Takashi
Publication year - 2018
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201800175
Subject(s) - lutetium , alkyl , phthalocyanine , chemistry , side chain , double bond , solvent , materials science , polymer chemistry , organic chemistry , polymer , oxide , yttrium
Synthesis and characterization of a novel, multifunctional, solvent‐free room‐temperature liquid based on alkylated double‐decker lutetium(III) phthalocyanine (Pc 2 Lu) are described. Lowering of the melting point and viscosity of intrinsically solid Pc 2 Lu compounds has been achieved through the attachment of flexible, bulky, and long branched‐alkyl chains, that is, thio‐2‐octyldodecyl, to the periphery of the Pc 2 Lu unit. The embedded Pc 2 Lu unit maintains its inherent molecular functions, such as spin‐active nature and electrochromic behavior in the liquid state. Comparison of the properties with a solid‐like Pc 2 Lu derivative, functionalized with shorter alkyl chains, that is, thio‐2‐ethylhexyl, underlines the importance of the hampering effect on the π–π interactions of neighboring Pc 2 Lu molecules by bulkier and longer branched‐alkyl chains. This study could possibly pave the way for novel multifunctional liquids whose spin‐activities are associated with their rheological or optoelectronic properties.