Patent ID: 9018016
Filing Date: 2015-04-28
Classification: G01N,Y10T

Abstract:
1. A porous sol-gel material comprising at least one probe molecule selected from the group consisting of croconic acid, p-dimethylaminobenzaldehyde (DMABA), p-dimethylaminocinnamaldehyde (DMACA), p-methoxy-benzaldehyde (MOB) and 4-methoxy-1-naphtaldehyde (MON) wherein said sol-gel material has an intrinsic pH lower than 1 and notably an intrinsic pH lower than 0, wherein said sol-gel material is prepared: (1) from a mixture comprising: with the molar ratio of first alkoxysilane(s)/second alkoxysilane(s) is between 1:0.01 and 1:1; or (2) from at least one alkoxysilane of formula (R (3) from a mixture comprising: