申请人:Nederlandes Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek
公开号:US04860573A1
公开(公告)日:1989-08-29
A substrate for an apparatus for quantitative detection of a component present in a gas or liquid, in which substrate elastic vibrations can be generated, said substrate being provided with a surface layer adapted to bond said component, so that the vibration behavior of said layer is changed. At least the surface portion of said substrate consists of a substance with active sites (A) for covalent bonding situated at its free surface, to which sites (A) molecules of a substance (X) are covalently bonded which, on the other hand, possess active sites (B) for selectively and reversibly bonding by means of a coordinative bond of the molecules of the component (G) to be detected. In particular between each active site (A) of the substrate and a molecule of the component bonding substance (X) a molecule of a coupler (K) can be inserted, which is covalently bonded to an active site (A) of said substrate, and, on the other hand, is bonded by means of a second bond (C) with a molecule of the component bonding substance (X), said second bond being a substantially covalent bond or a substantially coordinative bond. The component bonding substance (X) can be a substance in the form of an inclusion compound (X.sub.1), a complexing compound (X.sub.2), a metal ion cluster (X.sub.3), or an enzyme (X.sub.4). The coupler (K) can be formed by a trialkoxysilane compound with general formula (RO).sub.3 Si(CH.sub.2).sub.n -Y, in which Y is adapted to provide the covalent or coordinative bond (C) with the component bonding substance (X), and comprises an active group, which coupler (K) can be a compound of the following kind (Formula I).
一种用于气体或液体中定量检测组分的装置的基板,其中可以产生弹性振动,该基板具有适合结合所述组分的表面层,以便改变所述层的振动行为。至少该基板的表面部分由具有活性位点(A)的物质组成,该位点(A)位于其自由表面上,分子(X)共价结合到该位点(A)上,而分子(X)另一方面具有活性位点(B),通过配位键与待检测的组分(G)分子选择性和可逆地结合。特别是在基板的每个活性位点(A)和组分结合物质(X)的分子之间,可以插入偶联剂(K)的分子,该偶联剂(K)与所述基板的活性位点(A)共价结合,另一方面通过第二键(C)与组分结合物质(X)的分子结合,该第二键是实质上的共价键或实质上的配位键。组分结合物质(X)可以是包含化合物(X.sub.1),络合化合物(X.sub.2),金属离子簇(X.sub.3)或酶(X.sub.4)的物质。偶联剂(K)可以由具有一般公式(RO).sub.3 Si(CH.sub.2).sub.n-Y的三烷氧基硅烷化合物形成,其中Y适合与组分结合物质(X)提供共价或配位键(C),并包括一个活性基团,该偶联剂(K)可以是以下类型的化合物(式I)。