An ss-DNA gold chip was prepared based on self-assembly of the thiol-derivatized oligonucleotide, and used for the determination of single-stranded binding protein （SSB） by surface plasmon resonance microscopy （SPR...An ss-DNA gold chip was prepared based on self-assembly of the thiol-derivatized oligonucleotide, and used for the determination of single-stranded binding protein （SSB） by surface plasmon resonance microscopy （SPR）. The experiment results showed that SSB binds ss-DNA with high specificity, and relative signal of SPR response is proportional to the concentration of SSB in the range of 0.1-100 ng/mL with a detection limit （S/N = 3） of 0.07 ng/mL.展开更多
A novel bovine serum albumin （BSA） imprinted Mn-doped ZnS quantum dots （Mn：ZnS QDs） is firstly reported. The molecular imprinted polymer （MIP） functionalized Mn：ZnS QDs （Mn：ZnS @SiO2@MIP） include the prepar...A novel bovine serum albumin （BSA） imprinted Mn-doped ZnS quantum dots （Mn：ZnS QDs） is firstly reported. The molecular imprinted polymer （MIP） functionalized Mn：ZnS QDs （Mn：ZnS @SiO2@MIP） include the preparation of Mn：ZnS QDs, the coating of silica on the surface of Mn：ZnS QDs, and the functional polymerization by sol-gel reaction using 3-aminophenylboronic acid as the functional and cross-linking monomer in the presence of BSA （Mn：ZnS@SiO2@MIP-BSA）, and then the elution of the imprinted BSA on the surface of Mn：ZnS@SiO2 QDs. The results showed that the phosphorescence of Mn：ZnS@SiO2@MIP is stronger quenched by BSA than that of non-imprinted one （Mn：ZnS@SiO2@NIP）, indicating that the selectivity of the imprinted Mn：ZnS quantum dots toward BSA is superior to that of non-imprinted one.展开更多
基金the Science Foundation of the National Education Ministry （No, 206096） the Education Department of Hubei Province （No. Z200522002）.
文摘An ss-DNA gold chip was prepared based on self-assembly of the thiol-derivatized oligonucleotide, and used for the determination of single-stranded binding protein （SSB） by surface plasmon resonance microscopy （SPR）. The experiment results showed that SSB binds ss-DNA with high specificity, and relative signal of SPR response is proportional to the concentration of SSB in the range of 0.1-100 ng/mL with a detection limit （S/N = 3） of 0.07 ng/mL.
基金financial support from the Hubei Science Foundation(No.2010CDA061)
文摘A novel bovine serum albumin （BSA） imprinted Mn-doped ZnS quantum dots （Mn：ZnS QDs） is firstly reported. The molecular imprinted polymer （MIP） functionalized Mn：ZnS QDs （Mn：ZnS @SiO2@MIP） include the preparation of Mn：ZnS QDs, the coating of silica on the surface of Mn：ZnS QDs, and the functional polymerization by sol-gel reaction using 3-aminophenylboronic acid as the functional and cross-linking monomer in the presence of BSA （Mn：ZnS@SiO2@MIP-BSA）, and then the elution of the imprinted BSA on the surface of Mn：ZnS@SiO2 QDs. The results showed that the phosphorescence of Mn：ZnS@SiO2@MIP is stronger quenched by BSA than that of non-imprinted one （Mn：ZnS@SiO2@NIP）, indicating that the selectivity of the imprinted Mn：ZnS quantum dots toward BSA is superior to that of non-imprinted one.
