Nguyen Thao Phuong Le, Nguyen Cam Hong Thi, Nguyen Thiet-Quoc, Tran Chau Duc, Nguyen Tam Huu, Nguyen Le-Thu T, Nguyen Ha Tran
National Key Laboratory of Polymer and Composite Materials, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University - Ho Chi Minh City (VNU-HCM), 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, 700000, Vietnam.
Institute of Applied Materials Science, Vietnam Academy of Science and Technology, 1B TL29, District 12, Ho Chi Minh City, Vietnam.
Chempluschem. 2023 Aug;88(8):e202300264. doi: 10.1002/cplu.202300264.
A novel cyanine compound based on the conjugated perylene-benzothiazole system (PBI) as a colorimetric and fluorometric dual-channel sensor for cyanide (CN ) detection was synthesized and characterized via UV-vis and fluorescence spectroscopy. PBI exhibited a high sensitivity and rapid optical response for CN due to the intramolecular charge transfer (ICT) mechanism. The detection limit of PBI for CN was 1.15×10 M in the mixture of DMSO/H O (1 : 1, v/v). Moreover, probe PBI demonstrated high selectivity and sensitivity for CN over other common anions, including Cl , Br , F , I , AcO , ClO , HSO , SO , NO , NO and SCN . This work provided a simple and effective approach to trace the toxic CN ion with rapid response, high selectivity, and sensitivity that is possibly applied in environmental control and agricultural management.
合成了一种基于共轭苝-苯并噻唑体系（PBI）的新型花青化合物，作为用于氰化物（CN⁻）检测的比色和荧光双通道传感器，并通过紫外-可见光谱和荧光光谱对其进行了表征。由于分子内电荷转移（ICT）机制，PBI对CN⁻表现出高灵敏度和快速的光学响应。在二甲基亚砜/水（1∶1，v/v）的混合物中，PBI对CN⁻的检测限为1.15×10⁻⁶ M。此外，探针PBI对CN⁻表现出高于其他常见阴离子（包括Cl⁻、Br⁻、F⁻、I⁻、AcO⁻、ClO₄⁻、HSO₄⁻、SO₄²⁻、NO₃⁻、NO₂⁻和SCN⁻）的高选择性和灵敏度。这项工作提供了一种简单有效的方法来快速响应、高选择性和高灵敏度地追踪有毒的CN⁻离子，这可能应用于环境控制和农业管理。
