功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2015年
8期
8128-8132
,共5页
8-羟基-2-喹啉甲醛-4-硝基苯腙%合成%光谱%金属离子%识别
8-羥基-2-喹啉甲醛-4-硝基苯腙%閤成%光譜%金屬離子%識彆
8-간기-2-규람갑철-4-초기분종%합성%광보%금속리자%식별
8-hydroxy-2-quinoline aldehyde-4-nitrophenylhydrazone%synthesis%spectra%metal ion%recognition
以4-硝基苯肼、8-羟基喹哪啶等为原料设计合成了8-羟基-2-喹啉甲醛-4-硝基苯腙(1)，经元素分析、1 H NMR 对其结构进行了表征。在V (二甲亚砜)/V (甲醇)＝1∶9混合溶剂中采用 UV-Vis 光谱法研究了苯腙(1)对 Li＋、K＋、Mg2＋、Ca2＋、Mn2＋、Co2＋、Ni2＋、Zn2＋、Cd2＋、Hg2＋、Fe2＋、Fe3＋及 Cu2＋离子的识别性能。结果表明，苯腙1仅对 Cu2＋和 Zn2＋有特殊的识别能力，加入 Cu2＋或 Zn2＋的苯腙1溶液由黄色分别变为橙色和红色，其光谱在413 nm 处的吸收峰强度减小，且分别在485和508 nm 附近产生新的吸收峰。竞争实验表明，苯腙1对 Zn2＋的检测不受除 Cu2＋以外上述其它阳离子影响，而对 Cu2＋的检测不受上述任何其它阳离子的影响。线性拟合结果显示，苯腙1与 Cu2＋和 Zn2＋ 分别形成了1∶1和1∶2的配合物。
以4-硝基苯肼、8-羥基喹哪啶等為原料設計閤成瞭8-羥基-2-喹啉甲醛-4-硝基苯腙(1)，經元素分析、1 H NMR 對其結構進行瞭錶徵。在V (二甲亞砜)/V (甲醇)＝1∶9混閤溶劑中採用 UV-Vis 光譜法研究瞭苯腙(1)對 Li＋、K＋、Mg2＋、Ca2＋、Mn2＋、Co2＋、Ni2＋、Zn2＋、Cd2＋、Hg2＋、Fe2＋、Fe3＋及 Cu2＋離子的識彆性能。結果錶明，苯腙1僅對 Cu2＋和 Zn2＋有特殊的識彆能力，加入 Cu2＋或 Zn2＋的苯腙1溶液由黃色分彆變為橙色和紅色，其光譜在413 nm 處的吸收峰彊度減小，且分彆在485和508 nm 附近產生新的吸收峰。競爭實驗錶明，苯腙1對 Zn2＋的檢測不受除 Cu2＋以外上述其它暘離子影響，而對 Cu2＋的檢測不受上述任何其它暘離子的影響。線性擬閤結果顯示，苯腙1與 Cu2＋和 Zn2＋ 分彆形成瞭1∶1和1∶2的配閤物。
이4-초기분정、8-간기규나정등위원료설계합성료8-간기-2-규람갑철-4-초기분종(1)，경원소분석、1 H NMR 대기결구진행료표정。재V (이갑아풍)/V (갑순)＝1∶9혼합용제중채용 UV-Vis 광보법연구료분종(1)대 Li＋、K＋、Mg2＋、Ca2＋、Mn2＋、Co2＋、Ni2＋、Zn2＋、Cd2＋、Hg2＋、Fe2＋、Fe3＋급 Cu2＋리자적식별성능。결과표명，분종1부대 Cu2＋화 Zn2＋유특수적식별능력，가입 Cu2＋혹 Zn2＋적분종1용액유황색분별변위등색화홍색，기광보재413 nm 처적흡수봉강도감소，차분별재485화508 nm 부근산생신적흡수봉。경쟁실험표명，분종1대 Zn2＋적검측불수제 Cu2＋이외상술기타양리자영향，이대 Cu2＋적검측불수상술임하기타양리자적영향。선성의합결과현시，분종1여 Cu2＋화 Zn2＋ 분별형성료1∶1화1∶2적배합물。
8-hydroxy-2-quinoline formaldehyde-4-nitrophenylhydrazone (1)was synthesized by using 4-nitrophe-nyl hydrazine and 8-hydroxyquinaldine as starting materials and its structure was characterized by elemental analysis,1 H NMR.The influence of Li+ ,K+ ,Mg2 + ,Ca2 + ,Mn2 + ,Co2 + ,Ni2 + ,Zn2 + ,Cd2 + ,Hg2 + ,Fe2 + , Fe3 + and Cu2 + on the spectra of phenylhydrazone 1 were investigated by the UV-Vis spectrum method in V (DMSO)/V (methanol)=1 ∶9 mixed solvent.The result indicated that the UV-Vis spectra of phenylhydra-zone 1 only behaved special recognition and sensitivity to Cu2 + and Zn2 + .The color of phenylhydrazone 1 was changed from yellow to orange or red upon adding Cu2 + or Zn2 + respectively,which resulted in the decrease in the absorption at 413 nm and the new absorption near 485 nm and 508 nm.Competition experiments indicated that other cations but Cu2 + had no effect on the detection of Zn2 + ,while the presence of other ions had no effect on the detection of Cu2 + .The fitting results of linear display that the 1 ∶1 and 1 ∶2 binding stoichiometry of phenylhydrazone 1 with Cu2 + and Zn2 + respectively.
