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Sensitive Current Sensor Based on a Lanthanide Framework with Lewis Basic Bipyridyl Sites for Cu^2+^ Detection by Chenglong Liang; Shiyi Tan; Lixiong Shao; Xinxin Xue; Jiahao Liu; Nannan Liu; Weibing Zhang; Qian Shi is a Chemistry article available to read on EtoBox.
What is Sensitive Current Sensor Based on a Lanthanide Framework with Lewis Basic Bipyridyl Sites for Cu^2+^ Detection about?
A new Yb-based three-dimensional metal-organic framework with free Lewis basic sites, [Yb 2 (ddbpdc) 3 (CH 3 OH) 2 ] (referred to as ACBP-6), from YbCl 3 and (6R,8R)-6,8-dimethyl-7,8-dihydro-6H-[1,5]dioxonino [7,6-b:8,9-b′]dipyridine-3,11dicarboxylic acid (H 2 ddbpdc) was synthesized by a conventional solvothermal method. Two Yb 3+ are connected by three carboxyl groups to form the [Yb 2 (CO 2 ) 5 ] binuclear unit, which is further bridged by two carboxyl moieties to produce a tetranuclear secondary building unit. With further ligation of the ligand ddbpdc 2-, a 3-D MOF with helical channels is constructed. In the MOF, Yb 3+ only coordinates with O atoms, leaving the bipyridyl N atoms of ddbpdc 2-unoccupied. The unsaturated Lewis basic sites make this framework possible to coordinate with other metal ions. After growing the ACBP-6 in situ into a glass micropipette, a novel current sensor is formed. This sensor shows high selectivity and a high signal-to-noise ratio toward Cu 2+ detection with a detection limit of 1 μM, due to the stronger coordination ability between the Cu 2+ and the bipyridyl N atoms. ■ INTRODUCTION There has been increasing research attention in metal-organic fr
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- Author
- Chenglong Liang; Shiyi Tan; Lixiong Shao; Xinxin Xue; Jiahao Liu; Nannan Liu; Weibing Zhang; Qian Shi
- Publisher
- American Chemical Society (ACS)
- Published
- 2023
- Language
- EN
- Field
- Chemistry (Physical Sciences)