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    • 1. 发明授权
    • Ion sensor containing a selective organic membrane
    • 含有选择性有机膜的离子传感器
    • US5035791A
    • 1991-07-30
    • US221436
    • 1988-07-19
    • Massimo BattilottiMatteo Giongo
    • Massimo BattilottiMatteo Giongo
    • G01N27/333G01N27/414
    • G01N27/414G01N27/3335
    • An ion sensor is disclosed, together with the relevant process for preparing it, which contains a polymeric organic matrix, a ionophore, a device based on semiconductors of EMOS or ISFET (CHEMFET) type containing at its surface silicon oxide adhering to said polymeric organic matrix by means of a polysiloxanic matrix, characterized in that the polysiloxanic matrix is selected from the organosilanes of general formula ##STR1## wherein: R.sup.II, R.sup.III, R.sup.IV, which may be either equal to, or different from, one another, are alkyl or alkoxy groups containing from 1 to 10 carbon atoms,R.sup.I is equal to (CH.sub.2).sub.p X (CH.sub.2).sub.q wherein:X is CH.sub.2, or an either mono- or polycondensed aromatic group, or NH or O,p and g, which may be either equal to, or different from, one another, are integers which can have values comprised within the range of from 0 to 10, with value 0 being excluded when X is either NH or O,Y is --NH.sub.2 or --OH or --SH,and that the polymeric organic matrix is based on a polymer obtained by reacting a polymerized olefin, whose monomer has the formula: ##STR2## wherein: Z.sup.I is equal to ##STR3## or to (CH.sub.2).sub.r, wherein r is an integer which can have a value comprised within the range of from 1 to 10,R.sup.V can be either H or CH.sub.3, with the CH.sub.3 value being excluded when Z.sup.I is equal to (CH.sub.2).sub.r,and a compound, obtained by means of the reaction between 2,4-toluene-diisocyanate with a di-alcohol or a di-amine or a glycol or a tri-alcohol or a tri-amine, having the following formula: ##STR4## wherein: R.sup.VI is equal to (CH.sub.2 CH.sub.2 O).sub.m CH.sub.2 CH.sub.2, wherein m is an integer which can have values comprised within the range of from 1 to 20,000, or is equal to (CH.sub.2).sub.s, wherein s is an integer which can have values comprised within the range of from 1 to 20, or is equal to ##STR5## wherein t is an integer which can have values comprised within the range of from 1 to 10, andZ can be either --NH-- or O, with the --NH-- value being excluded when R.sup.VI =(CH.sub.2 CH.sub.2 O).sub.m CH.sub.2 CH.sub.2.
    • 2. 发明授权
    • Process for obtaining a multifunctional, ion-selective-membrane sensor
using a siloxanic prepolymer
    • 使用硅氧烷预聚物获得多功能离子选择性膜传感器的方法
    • US5130265A
    • 1992-07-14
    • US454512
    • 1989-12-21
    • Massimo BattilottiGiuseppina MazzamurroMatteo Giongo
    • Massimo BattilottiGiuseppina MazzamurroMatteo Giongo
    • G01N27/414G03F7/00
    • G03F7/00G01N27/414
    • A process for obtaining a multifunctional, ion-selective-membrane sensor is disclosed, which process comprises the following steps:a) preparation of a siloxanic prepolymer, followed by one or more deposition(s) of said siloxanic prepolymer on a device of MOS or ISFET type;b) preparation of a solution containing an ionophore, a monomer of a polymerisable olefin, 2,4-toluenediisocyanate and a dialcohol or a diamine or a glycol or a trialcohol or a triamine, which preparation is followed, after that said solution has been kept stirred for at least 48 hours at room temperature, by the deposition thereof on the siloxanic prepolymer, which deposition is carried out by means of a spinner;c) photochemical treatment in the presence of a photoinitiator by means of UV light, with a suitable mask being used, which allows the exposure to UV light to take place on one gate only;d) chemical washing of the sensor, by means of an organic solvent;e) thermal treatment ("thermal curing"), so as to complete the reactions of polymerization;f) preparation and deposition onto the siloxanic polymer of another solution, or of a plurality of other solutions, by operating in a similar way as of the above (b) step, which solution(s) contain(s) an ionophore different from the preceding one(s), which deposition is followed by the (c), (d) and (e) steps, with a mask being used, which is different from the preceding mask(s), which makes it possible for the exposure to UV light to be carried out on a gate different from the preceding one(s).