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Substituted Position Effect on Twisted Intramolecular Charge Transfer of 1- and 2-Anthracene Aromatic Carboxamides as Chemosensors Based on Linear Polyether

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Title: Substituted Position Effect on Twisted Intramolecular Charge Transfer of 1- and 2-Anthracene Aromatic Carboxamides as Chemosensors Based on Linear Polyether
Authors: Kim, Jeongsik Browse this author
Morozumi, Tatsuya Browse this author →KAKEN DB
Hiraga, Hisafumi Browse this author
Nakamura, Hiroshi Browse this author →KAKEN DB
Issue Date: Nov-2009
Publisher: Japan Society for Analytical Chemistry
Journal Title: Analytical Sciences
Volume: 25
Issue: 11
Start Page: 1319
End Page: 1325
Publisher DOI: 10.2116/analsci.25.1319
Abstract: Bi-chromophoric compounds linked to linear polyether N,N'-[oxybis(3-oxapentamethyleneoxy-2-phenyl)]-bis(1-anthracenecarboxamide) (1(4)) and its analogues (1(5), 2(4) and 2(5)) were synthesized. Their photochemical properties and complexation actions were investigated in acetonitrile. These fluoroionophores have shown weak emissions in the absence of guest ions, resulting in a twisted intramolecular charge transfer (TICT) quenching process (off state) of an anthracene aromatic amide moiety. After the formation of a complex with alkaline earth metal ions, a large enhancement Of fluorescent intensities was obtained (on state). The efficiencies of controlling an off-on fluorescent signal using 1(4) and its analogues (1(5), 2(4) and 2(5)) were larger than that of the 9-positioned analogue. These results suggested that the TICT relaxation process was effectively able to control using 1(4) and its analogues (1(5), 2(4) and 2(5)) by complex formations.
Type: article
URI: http://hdl.handle.net/2115/39953
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 中村 博

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