Luminous relative humidity sensing by anionic fluorescein dyes incorporated into layered double hydroxide/1-butanesulfonate hybrid materials

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• 作者：Ryo Sasai ; ^{rsasai@riko.shimane-u.ac.jp" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Michio MoritaAuthor Vitae
• 关键词：Relative humidity sensing ; Layered double hydroxide ; Anionic fluorescein ; Hybrid materials ; Fluorescent dyes
• 刊名：Sensors & Actuators: B. Chemical
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：238
• 期：Complete
• 页码：702-705
• 全文大小：636 K

文摘

Spectroscopic properties of solid relative humidity (RH) sensors consisting of anionic fluorescein dyes (AFD) and 1-butanesulfonate (C4S) ions hybridized with layered double hydroxides (LDH) were investigated under various RH conditions. The obtained LDH/C4S/AFD hybrid material contained at least three different types of water adsorption sites with adsorption capacities of one water molecule per formula unit. Photoluminescence (PL) intensity of the LDH/C4S/AFD hybrid was significantly enhanced by water adsorption (especially in the RH range between 20 and 80%) indicating that the synthesized material possessed strong RH sensing properties and thus could be used in water vapor sensor devices.