New colorimetric chemosensor based on rhodamine
hydrazide to detect Cu
ions by naked eye
Received: 26 December 2013 / Accepted: 5 March 2014 / Published online: 22 March 2014
Ó Springer Science+Business Media Dordrecht 2014
Abstract A rhodamine-based chemosensor for naked-eye detection of Cu
been designed and synthesized, which exhibited excellent selectivity and high
sensitivity for Cu
CN and CH
O mixed solutions. When Cu
added to the solution of sensor 1, a dramatic color change from colorless to bluish
violet was observed, while the cations K
, and Cd
did not interfere with the recognition process for
. The pH effect investigations indicated that it can be applied to analysis of
samples over a wide pH range.
Keywords Colorimetric sensor Á Cu
Á Naked-eye detection Á Rhodamine
As transition metal cations play an important role in living systems and have an
extremely toxic impact on the environment, the development of speciﬁc chemo-
sensor for the detection of metal cations has received considerable attention [1–7].
Among transition elements, copper is one of the important elements in humans and
plays a critical role as a catalytic cofactor for a variety of metalloenzymes [8–12].
Electronic supplementary material The online version of this article (doi:10.1007/s11164-014-1588-
7) contains supplementary material, which is available to authorized users.
D. Zhang Á Y. Ma Á R. An
School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology,
Jinan 250353, Shandong, People’s Republic of China
D. Zhang (&)
Shandong Provincial Key Laboratory of Fine Chemicals, Jinan 250353, Shandong,
People’s Republic of China
Res Chem Intermed (2015) 41:5059–5069