Organosilanes and substrate bonded with same
The present invention provides novel silicon compounds, methods for making these novel silicon compounds, compositions comprising these novel silicon compounds attached to substrates, methods for attaching the novel silicon compounds to substrates and methods for using the compositions in a variety of chromatographic applications.
1. A composition comprising a compound covalently bound to a substrate, said compound having structural Formula (II):
or salts, solvates or hydrates thereof,
wherein
R 1 , R 2 and R 3 are independently alkyl, alkoxy, alkoxycarbonyl, alkylsulfonyloxy, amino optionally substituted with one or more of the same or different R 12 groups, aryl, aryloxycarbonyl, aryloxy, arylsulfonyloxy, halo or hydroxyl provided that at least one of R 1 , R 2 and R 3 is covalently bound to said substrate;
L 1 is at least C 8 alkanyldiyl;
L 2 is alkyldiyl or aryldiyl;
Y is —S—, —O—, —C(O)N(R 4 )—, —N(R 4 )C(O)—, —N(R 4 )S(O) 2 —, —S(O) 2 N(R 4 )—, —C(O)O—, —OC(O)—, —OC(O)N(R 4 )—, —N(R 4 )C(O)O—, —N(R 4 )C(O)N(R 5 )— or —N(R 4 )C(S)N(R 5 )—,
wherein
R 4 and R 5 are independently hydrogen, alkyl, substituted alkyl, aryl or substituted aryl; and
W is ZOH, -(Z) n N(R 6 )(R 7 ), -(Z) n N + (R 6 )(R 7 )(R 8 )X − —, or -(Z) n OP(O)(OR 9 )(OR 10 ) or -(Z) n B(OR 9 )(OR 10 )(OR 11 ),
wherein
R 6 , R 7 and R 8 are independently hydrogen, alkyl or substituted alkyl;
R 9 , R 10 and R 11 are independently hydrogen, alkyl, substituted alkyl, aryl or substituted aryl;
R 12 is hydrogen or alkyl;
X − is an anionic counterion;
Z is aryl or substituted aryl; and
n is 0 or 1.
2. The composition of claim 1 , wherein
R 1 , R 2 and R 3 are independently alkyl, alkoxy or halo;
L 1 is (C 8 -C 12 ) alkanyldiyl;
L 2 is (C 1 -C 30 ) alkanyldiyl;
R 4 and R 5 are hydrogen or alkyl;
R 6 and R 7 are independently hydrogen, alkyl or alkyl substituted with one or more amino groups;
R 8 is hydrogen or alkyl, optionally substituted with one or more —OH, —CN, aryl or perfluoro groups; and
W is -(Z) n N(R 6 )(R 7 ) or -(Z) n N + (R 6 )(R 7 )(R 8 )X − .
3. The composition of claim 1 in which the compound is covalently bonded to the substrate by reaction of one or more of R 1 , R 2 and R 3 with reactive groups on the substrate selected from the group consisting of silanol, alkoxysilane, halosilane or aminosilane.
4. The composition of claim 3 in which —SiR 1 (R 2 )(R 3 ) is covalently bonded to another compound of claim 1 by reaction with reactive groups selected from the group consisting of silanol, alkoxysilane or halosilane on the other compound.
5. The composition of claim 1 in which the substrate is a silica substrate.
6. The composition of claim 5 in which the silica substrate is silica gel.
7. The composition of claim 1 in which the substrate is glass, a sol-gel polymer or a hybrid sol-gel polymer.
8. The composition of claim 1 , wherein said compound covalently bound to said substrate has a structure according to Formula (III):
9. The composition of claim 8 , wherein said compound has a structure, which is a member selected from:
10. The composition of claim 1 in a flow through bed suitable for use as a chromatographic medium.
11. The composition of claim 1 , wherein at least one of R 1 , R 2 and R 3 is methyl.
12. A chromatography column packed with a separation medium comprising the composition of claim 1 .
13. A composition comprising the formula:
wherein
R 1 and R 3 are members independently selected from alkyl, alkoxy, alkoxycarbonyl, alkylsulfonyloxy, aryl, aryloxycarbonyl, aryloxy, arylsulfonyloxy, halo, hydroxyl or amino, wherein said amino is optionally substituted with one or more alkyl group, with the proviso that at least one of R 1 and R 3 is alkyl;
L 1 is at least C 8 alkanyldiyl;
L 2 is alkyldiyl or aryldiyl;
Y is —S—, —O—, —C(O)N(R 4 )—, —N(R 4 )C(O)—, —N(R 4 )S(O) 2 —, —S(O) 2 N(R 4 )—, —C(O)O—, —OC(O)—, —OC(O)N(R 4 )—, —N(R 4 )C(O)O—, —N(R 4 )C(O)N(R 5 )—or —N(R 4 )C(S)N(R 5 )—,
wherein
R 4 and R 5 are independently hydrogen, alkyl, substituted alkyl, aryl or substituted aryl; and
W is ZOH, -(Z) n N(R 6 )(R 7 ), -(Z) n N + (R 6 )(R 7 )(R 8 )X—, -(Z) n OP(O)(OR 9 )(OR 10 ) or -(Z) n B(OR 9 )(OR 10 )(OR 11 );
wherein
R 6 , R 7 and R 8 are independently hydrogen, alkyl or substituted alkyl;
R 9 , R 10 and R 11 are independently hydrogen, alkyl, substituted alkyl, aryl or substituted aryl;
X is an anionic counterion;
Z is aryl or substituted aryl; and
n is 0 or 1,
or a salt, solvate or hydrate thereof.
14. The composition of claim 13 in which R 1 and R 3 are both alkyl.
15. The composition of claim 14 in which R 1 and R 3 are both methyl.
16. The composition of claim 13 in which Y is an amide group.
17. The composition of claim 16 comprising a structure, which is a member selected from:
or a salt, solvate or hydrate thereof.
18. The composition of claim 13 , wherein said substrate is a silica substrate.
19. The composition of claim 18 , wherein said silica substrate is silica gel.
20. The composition of claim 13 , wherein said substrate is glass, a sol-gel polymer or a hybrid sol-gel polymer.
21. The composition of claim 13 in a flow-through bed suitable for use as a chromatographic medium.
22. The composition of claim 13 , wherein L 2 is (C 1 to C 5 ) alkanyldiyl or phenyldiyl.