RT info:eu-repo/semantics/article
T1 The 2-isocyanoazulene-gold(I) fragment as a versatile element for organometallic dyes and liquid crystals
A1 Domingo de la Rubia, Estela de
A1 Barcenilla Castellano, María
A1 Martín Álvarez, José Miguel
A1 Miguel García, Jesús Ángel
A1 Coco Cea, Silverio
K1 Liquid crystals
K1 2303 Química Inorgánica
AB This manuscript reports the synthesis and liquid crystal behavior of isocyanoazulene gold(I) complexes [AuX (CN-Az)] (Az = azulene; X = halide, perhalophenyl or alkynyl) and [μ-4,4′-C6F4C6F4{Au(CN-Az)}2]. The comparison of the X-ray structures of homologous compounds, reveals that the introduction of a long substituent in the system produces a loss of molecular planarity that induces a decrease in the melting temperatures. The free 2-isocyanoazulene is not a liquid crystal itself, but its gold complexes bearing a C10 hydrocarbon chain display a SmA mesophase, whose formation is driven by nanosegregation between molten chains and aromatic parts. The free isocyanide is strongly colored and displays fluorescence in solution associated with the azulene fragment, which is largely diminished upon coordination to the gold fragment.
PB Elsevier
SN 0143-7208
YR 2020
FD 2020
LK http://uvadoc.uva.es/handle/10324/42648
UL http://uvadoc.uva.es/handle/10324/42648
LA eng
NO Dyes and Pigments Volume 176, 2020, 108195
NO Producción Científica
DS UVaDOC
RD 27-dic-2024