摘要
以2-肼基苯并噻唑与5-苯基-2-噻吩甲醛为原料合成一种新型苯并噻唑类荧光探针L,并通过核磁、红外及质谱结构表征。在四氢呋喃/4-羟乙基哌嗪乙磺酸(THF/HEPES,v∶v=4∶6,pH=7.4)体系中,探针L可与Ag^(+)以1∶1比例形成络合物L-Ag^(+)从而实现对Ag^(+)的“开-关”荧光响应识别,并可抵抗常见金属离子及阴离子的干扰。当Ag^(+)浓度在0~10μmol/L时,荧光强度与Ag+浓度呈现良好线性关系,且检测极限低至72.0nmol/L。探针L成功应用于水体中Ag+检测,实验加标回收率为86.29%~107.10%,相对标准偏差为1.78%~4.59%,取得令人满意的结果。
A novel benzothiazole-based fluorescent probe L was synthesized by 2-hydrazinylbenzothiazole with 5-phenyl-2-thiophenecarbaldehyde,and its structure was characterized by NMR,FT-IR and HRMS.In the system of THF/HEPES(v∶v=4∶6,pH=7.4),the probe L formed a complex L-Ag+with Ag+in a 1∶1 ratio,realizing the recognition of Ag+with the“on-off”fluorescence response and demonstrating resistance to the interference of common metal ions and anions.The fluorescence intensity exhibited a remarkable linear relationship with Ag+concentration in the range of 0~10μmol/L,with an impressively low detection limit of 72.0nmol/L.Additionally,The probe L was successfully applied to the detection of Ag+in water.The experimental spiked recovery rates ranged from 86.29%to 107.10%,and relative standard deviations ranged from 1.78%to 4.59%,yielding highly satisfactory results.
作者
伊怀诗
赵予心
王慧双
路鹏程
刘荣豪
刘其业
曾运波
喻艳超
Yi Huaishi;Zhao Yuxin;Wang Huishuang;Lu Pengcheng;Liu Ronghao;Liu Qiye;Zeng Yunbo;Yu Yanchao(Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province,School of Materials Science and Chemical Engineering,Harbin University of Science and Technology,Harbin 150080)
出处
《化工新型材料》
CAS
CSCD
北大核心
2024年第S01期418-422,共5页
New Chemical Materials
基金
黑龙江省自然科学基金项目(LH2021H001)
哈尔滨理工大学创新创业训练计划省级项目(202310214089)。
