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Programmed High‐Hole‐Mobility Supramolecular Polymers from Disk‐Shaped Molecules
Author(s) -
Zhang Wei,
Ochi Kenji,
Fujiki Michiya,
Naito Masanobu,
Ishikawa Masaaki,
Kaneto Keiichi,
Takashima Wataru,
Saeki Akinori,
Seki Shu
Publication year - 2010
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201001072
Subject(s) - materials science , high resolution transmission electron microscopy , supramolecular chemistry , polymer , conductivity , transmission electron microscopy , electron mobility , supramolecular polymers , crystallography , nanotechnology , optoelectronics , chemistry , crystal structure , composite material
In this paper a simple, casting solution technique for the preparation of two‐dimensional (2D) arrays of very‐high molecular weight (MW) 1D‐Pc supramolecular inorganic polymers is described. The soluble fluoroaluminium tetra‐ tert ‐butylphthalocyanine (ttbPcAlF) is synthesized and characterized, which can be self‐assembled to form 2D arrays of very‐high‐MW 1D‐Pc supramolecular inorganic polymers. High‐resolution transmission electron microscopy (HRTEM) demonstrates that the 1D‐ttbPcAlF, having a cofacial ring spacing of ∼0.36 nm and an interchain distance of ∼1.7 nm, self‐assembles into 2D‐nanosheets (∼140 nm in length, ∼20 nm in width, and equivalent to MW of 3.2 × 10 5 g mol −1 ). The film cast from a 1,2‐dichloroethane (DCE) solution shows a minimum hole‐mobility of ∼0.3 cm 2 V −1 s −1 at room temperature by flash‐photolysis time‐resolved microwave conductivity (TRMC) measurements and a fairly high dark dc ‐conductivity of ∼1 × 10 −3 S cm −1 .