CAJ | 학술논문

本文合成了4-甲基哌嗪-1,8-萘酰亚胺修饰的β-环糊精，该化合物对Fe3+和Fe2+展现出良好的选择性识别能力。当适量的氨水加入到该化合物水溶液中后，溶液体系的荧光被完全猝灭。然而，当 Fe3+和 Fe2+加入到该溶液体系后，520 nm处的荧光信号和416 nm处的共振瑞利散射峰均立即增强。Fe3+和Fe2+引起的荧光强度和共振瑞利散射强度比值的差异可用于鉴别Fe3+和Fe2+，同时，该方法还展现了较高的灵敏度。本文建立的方法对Fe3+检测的线性范围为1.5×10-5~2.2×10-5 mol/L，检测限为1.1×10-5 mol/L；对Fe2+检测的线性范围为0.5×10-5~4.2×10-5 mol/L，检测限为0.35×10-5 mol/L。
본문합성료4-갑기고진-1,8-내선아알수식적β-배호정，해화합물대Fe3+화Fe2+전현출량호적선택성식별능력。당괄량적안수가입도해화합물수용액중후，용액체계적형광피완전졸멸。연이，당 Fe3+화 Fe2+가입도해용액체계후，520 nm처적형광신호화416 nm처적공진서리산사봉균립즉증강。Fe3+화Fe2+인기적형광강도화공진서리산사강도비치적차이가용우감별Fe3+화Fe2+，동시，해방법환전현료교고적령민도。본문건립적방법대Fe3+검측적선성범위위1.5×10-5~2.2×10-5 mol/L，검측한위1.1×10-5 mol/L；대Fe2+검측적선성범위위0.5×10-5~4.2×10-5 mol/L，검측한위0.35×10-5 mol/L。
The fluorescent β-cyclodextrin bearing 4-(methylpiperazinyl)-1,8-naphthalimide (compound 1) has been synthesized and characterized. The maximum excitation and emission emerged at 411 nm and 520 nm, respectively. After the addition of 8×10-4 mol/L ammonia into aqueous solution of compound 1, the fluorescence emission was quenched completely. However, upon adding Fe3+ and Fe2+, the fluorescence signal of compound 1 enhanced immediately. Meanwhile, a resonance Rayleigh scattering peak at 416 nm increased. The difference of the fluorescence enhancement and the resonance Rayleigh scattering signal can distinguish Fe3+and Fe2+with pronounced sensitivity and selectivity. The method exhibited a linear response for Fe3+ within the concentration range of 1.5×10-5~2.2×10-5 mol/L, and the limit of detection was 1.1×10-5 mol/L. For Fe2+, the linear range was 0.5×10-5~4.2×10-5 mol/L, the corresponding limit of detection was 0.35×10-5 mol/L.