应用化学
應用化學
응용화학
CHINESE JOURNAL OF APPLIED CHEMISTRY
2010年
2期
178-182
,共5页
高盐生%周秋华%张红梅%王彦卿
高鹽生%週鞦華%張紅梅%王彥卿
고염생%주추화%장홍매%왕언경
硅钨酸%氧氟沙星%荧光光谱%相互作用
硅鎢痠%氧氟沙星%熒光光譜%相互作用
규오산%양불사성%형광광보%상호작용
silicotungstic heteropolyacid%ofloxacin%fluorescence spectroscopy%interaction
利用荧光光谱及红外光谱研究了硅钨杂多酸与氧氟沙星分子的相互作用.结果表明,在溶液中硅钨酸分子与氧氟沙星生成新的配合物,导致氧氟沙星溶液荧光的猝灭,其猝灭类型主要为静态猝灭.通过测定反应的表观结合常数、结合位点数及结合热力学参数,证明硅钨酸与氧氟沙星分子主要通过静电和疏水作用形成配合物,配合物中的硅钨酸仍保持Keggin结构.
利用熒光光譜及紅外光譜研究瞭硅鎢雜多痠與氧氟沙星分子的相互作用.結果錶明,在溶液中硅鎢痠分子與氧氟沙星生成新的配閤物,導緻氧氟沙星溶液熒光的猝滅,其猝滅類型主要為靜態猝滅.通過測定反應的錶觀結閤常數、結閤位點數及結閤熱力學參數,證明硅鎢痠與氧氟沙星分子主要通過靜電和疏水作用形成配閤物,配閤物中的硅鎢痠仍保持Keggin結構.
이용형광광보급홍외광보연구료규오잡다산여양불사성분자적상호작용.결과표명,재용액중규오산분자여양불사성생성신적배합물,도치양불사성용액형광적졸멸,기졸멸류형주요위정태졸멸.통과측정반응적표관결합상수、결합위점수급결합열역학삼수,증명규오산여양불사성분자주요통과정전화소수작용형성배합물,배합물중적규오산잉보지Keggin결구.
A complex composed of ofloxacin(OFLX) and silicotungstic heteropolyacid(SiW) was studied by means of fluorescence and IR spectroscopies. SiW can quench the fluorescence of OFLX by forming a new complex. The binding site number n, apparent binding constant K_A and corresponding thermodynamic parameters were measured at different temperatures. The result indicates that the electrostatic and hydrophobic interactions play a major role in stabilizing the complex. The IR spectrum confirms the presence of Keggin type anion in the SiW-OFLX complex.