Page 95 - 《精细化工》2023年第9期
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第 40 卷第 9 期                             精   细   化   工                                  Vol.40, No.9
             20 23 年 9 月                             FINE CHEMICALS                                 Sept.  2023


              功能材料
                                                                      2+
                                                                                   2+
               可逆型荧光探针的合成及对 Cu 和 Pd 的双重检测

                                                                                 *
                                       邵   琦,鞠立鑫,蒋春辉,陆鸿飞
                                   (江苏科技大学  环境与化学工程学院,江苏  镇江  212000)


                 摘要:以 6-肼基-8,9-二(萘-1-基)-9H-嘌呤、4-羟基-3-甲氧基苯甲醛为原料,通过简单的席夫碱反应合成了一种
                                2+
                                      2+
                 用于检测溶液中 Cu 和 Pd 的可逆型荧光探针(E)-4-({2-[8,9-二(1-萘基)-9H-嘌呤-6-基]肼亚基}甲基)-2-甲氧基苯
                                         13
                                 1
                 酚(PHM)。并通过 HNMR、 CNMR、MS 对其结构进行了表征。荧光光谱表明,PHM 可以快速识别 4-羟乙
                                                   2+
                                                         2+
                 基哌嗪乙磺酸(HEPES)缓冲溶液中的 Pd 和 Cu ,并且不受其他金属离子的干扰。其在 V(二甲基亚砜)∶
                                                                              2+
                                                                                   2+
                 V(H 2 O)=9∶1(pH 7.4,用 0.2 mmol/L HEPES 缓冲液调节)溶液中对 Cu 和 Pd 的检出限分别为 72.97 和
                                      2+
                                                                           2+
                                                                                2+
                                            2+
                 839.00 nmol/L。PHM 对 Cu 和 Pd 的响应时间在 1 min 内,PHM 与 Cu 和 Pd 以物质的量比 1∶1 和 1∶2
                                                                            2+
                 形成配合物。同时,肉眼可以察觉到视觉色调的明显变化。向配合物 PHM-Cu 溶液中加入乙二胺四乙酸(EDTA)
                 后,探针 PHM 呈现出明显荧光恢复响应,证实了 PHM 的可逆性。Job's 曲线和密度泛函理论均验证了探针 PHM
                     2+
                           2+
                 与 Pd 和 Cu 可能的络合机制。
                                         2+
                                              2+
                 关键词:可逆型荧光探针;Cu ;Pd ;双重检测;试纸;功能材料
                 中图分类号:O657.3;TP212     文献标识码:A      文章编号:1003-5214 (2023) 09-1943-09
                            Synthesis of reversible fluorescent probe and its double
                                                                          2+
                                                               2+
                                             detection of Cu  and Pd
                                                                                   *
                                      SHAO Qi, JU Lixin, JIANG Chunhui, LU Hongfei
                 (College of Environmental and Chemical Engineering, Jiangsu University of Science and  Technology, Zhenjiang
                 212000, Jiangsu, China)
                 Abstract: A reversible fluorescent probe (E)-4-({2-[8,9-di(naphthalen-1-yl)-9H-purin-6-yl] hydrazineylidene}
                                                             2+
                                                                    2+
                 methyl)-2-methoxyphenol (PHM) for detection of Cu  and Pd  in solution were synthesized from simple
                 Schiff base reaction of 6-hydrazinyl-8,9-di(naphthalen-1-yl)-9H-purine and 4-hydroxy-3-methoxybenzaldehyde
                                                         13
                                                 1
                 as raw materials, and characterized by  HNMR,  CNMR and MS. Fluorescence spectra showed that PHM
                                    2+
                 rapidly recognized Pd  and Cu 2+   in 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid  (HEPES)
                                                                                                  2+
                                                                                          2+
                 buffer solution without interference  from other metal ions. The detection limits for  Cu  and Pd  were
                 72.97 and 839.00 nmol/L, respectively, in the solution of V(dimethyl sulfoxide)∶V(H 2O)=9∶1 (pH 7.4,
                                                                                             2+
                                                                                      2+
                 adjusted with 0.2 mmol/L HEPES buffer solution). The response time of PHM to Cu  and Pd  was within
                                                             2+
                                                      2+
                 1 min, and PHM formed complexes with Cu  and Pd  in the molar ratio of 1∶1 and 1∶2. At the same
                 time, obvious changes in visual hue could be detected by the naked eye. After ethylenediamine tetraacetic
                                                             2+
                 acid (EDTA)  was added to the complex PHM-Cu  solution, the probe  PHM showed a significant
                 fluorescence recovery response, which confirmed the reversibility. Both Job's curve and density functional
                                                                               2+
                                                                                      2+
                 theory verified the possible complexation mechanism of probe PHM with Pd and Cu .
                                                     2+
                                                         2+
                 Key words: reversible fluorescent probe; Cu ; Pd ; dual detection; test paper; functional materials
                                                                                                         [4]
                 荧光探针因其高效、便携、灵敏等特点而备受                          应用。Cu 是地壳中含量第三丰富的重金属元素 ,
                                                                                      [5]
                                                                                           2+
            关注  [1-3] ,其对金属离子的检测在各领域有着重要的                      也是人体重要的微量元素 ;Cu 可催化许多生化反

                 收稿日期:2022-11-04;  定用日期:2023-01-17; DOI: 10.13550/j.jxhg.20221003
                 基金项目:镇江市重点研发计划项目(SH2020009);江苏科技大学资助项目(SH2022007)
                 作者简介:邵   琦(1998—),女,硕士生,E-mail:584799005@qq.com。联系人:陆鸿飞(1979—),男,教授,E-mail:zjluhf1979@
                 just.edu.cn。
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