2002年3月
Synthesis, structure, and complexation properties with transition metal cations of a novel methine-bridged bisquarylium dye
DYES AND PIGMENTS
- ,
- ,
- ,
- 巻
- 52
- 号
- 3
- 開始ページ
- 245
- 終了ページ
- 252
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1016/S0143-7208(01)00095-X
- 出版者・発行元
- ELSEVIER SCI LTD
A new class of squarylium homologue, namely, an electronically neutral methine-bridged bisquarylium dye, was synthesized by a reaction of 4-(4-N,N-dialkylaminophenyl)-3-hydroxy-3-cyclobutene-1,2-dione with an excess amount of triethyl orthoformate. The X-ray crystallographic analysis revealed that the bisquarylium dye consists of two anilino-substituted cyclobutene components which are bridged with each other by a methine carbon. It was also confirmed that it possesses a highly delocalized pi-conjugation structure over the whole molecule. Its unique electronic structure yielded an intense light absorption in the near-infrared region. The complexation properties of the dye with various metal cations were investigated, and the complexation with transition metal cations such as Cr3+, Mn2+, Fe2+, Co2+ and Cu2+ exclusively induced drastic absorption spectral changes with hypsochromic shifts (Deltalambda; 59-197 nm). (C) 2002 Elsevier Science Ltd. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/S0143-7208(01)00095-X
- ISSN : 0143-7208
- CiNii Articles ID : 80012904842
- Web of Science ID : WOS:000175328200009