NDLI: A cell compatible fluorescent chemosensor for Hg<sup>2+</sup> based on a novel rhodamine derivative that works as a molecular keypad lock

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A cell compatible fluorescent chemosensor for Hg²⁺ based on a novel rhodamine derivative that works as a molecular keypad lock

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Liming Song, Hang Li, Bin Gao, Jie Jiang, Hong Wang, Yinghui Huang, Yanqi
Copyright Year	2011
Abstract	A novel fluorescent chemosensor based on rhodamine derivative (Rh1) has been designed and synthesized for detection of Hg2+ ions, which exhibits high sensitivity and selectivity over other metal ions in aqueous solution and living cells. Moreover, this “Off–On”-type fluorescent sensor could successfully mimic a molecular level keypad lock in the presence of Cu2+ ions. Stimulated by the two chemical inputs (Hg2+ and Cu2+), Rh1 undergoes transformation of the structure between spirocyclic and ring-opened spirocyclic, which results in the change of fluorescence. Significantly, the outputs of the system depend on not only the proper combination but also on the correct order of the input signals, which is the most important feature of the keypad lock system. Only a specific sequence of inputs, i.e. the correct password, results in strong fluorescence emission at 555 nm which can be used to “open” this molecular keypad lock. Therefore, this molecular keypad lock has the potential for application in security devices, which could be used to authorize a user, to verify authentication of a product, or to initiate a higher process.
Starting Page	1294
Ending Page	1300
Page Count	7
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	1
Issue Number	7
Journal	RSC Advances
DOI	10.1039/c1ra00488c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Rhodamine Record locking Authentication Fluorescence Chemoreceptor Spiro compound
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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