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Ruthenium Acetate Cluster Amphiphiles and Their Langmuir–Blodgett Films for Electrochromic Switching Devices
Author(s) -
Naidek Karine P.,
Hoffmeister Denize M.,
Pazinato Jaqueline,
Westphal Eduard,
Gallardo Hugo,
Nakamura Marcelo,
Araki Koiti,
Toma Henrique E.,
Winnischofer Herbert
Publication year - 2014
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201301442
Subject(s) - electrochromism , ruthenium , chemistry , langmuir–blodgett film , amphiphile , ligand (biochemistry) , pyridine , cluster (spacecraft) , electrochromic devices , photochemistry , monolayer , crystallography , organic chemistry , copolymer , electrode , catalysis , receptor , polymer , biochemistry , computer science , programming language
Abstract We synthesized a long‐chain phenylazopyridine ligand and used it to obtain three new amphiphilic trinuclear ruthenium acetate clusters. The amphiphilicity and anisometric form of the long‐chain ligand allowed the complexes to self‐assemble at the liquid–air interface and enabled their deposition by the Langmuir–Blodgett technique. We obtained the linear complex [Ru 3 O(C 2 H 3 O 2 ) 6 (py) 2 L] + [L = 4‐(4‐dodecyloxyphenylazo)pyridine, py = pyridine], which was more stable than the triangular [Ru 3 O(C 2 H 3 O 2 ) 6 L 3 ] + and more suitable for application in electrochromic switching devices, as attested by its fast switching and optical changes in the near‐IR region. Indeed, our electrochromic device remained stable for hundreds of switching cycles.