A novel “turn off-on” sensor for detection of interaction between DNA and acrylamide (ACR) was developed. In this method, L-cysteine capped Mn-doped ZnS quantum dots (QDs) were used as room temperature phosphorescent probes. In the “turn-off” mode, ACR was absorbed onto the surface of QDs via electrostatic interaction, which caused a quenching effect of room-temperature phosphorescence signal by photoinduced electron-transfer mechanism. ACR was removed from the QDs’ surface with the addition of DNA. Thus, the phosphorescence emission of QDs was recovered and the system was turned to the “turn-on” mode.
Nội dung trích xuất từ tài liệu:
Novel “turn off-on” sensors for detection of DNA-acrylamide interaction using ZnS quantum dots as a phosphorescent probe
Novel 'turn off-on' sensors for detection of DNA-acrylamide interaction using ZnS quantum dots as a phosphorescent probe
Số trang: 12
Loại file: pdf
Dung lượng: 435.32 KB
Lượt xem: 11
Lượt tải: 0
Thông tin tài liệu:
Tìm kiếm theo từ khóa liên quan:
Journal of Chemistry DNA interaction Quantum dots Photoinduced electron transfer Phosphorescence emission Environmentally toxic substancesTài liệu có liên quan:
-
13 trang 30 0 0
-
9 trang 29 0 0
-
14 trang 24 0 0
-
Removal of Cr(VI) from wastewater through glycine assisted synthesis of TiO2
9 trang 24 0 0 -
Influence of magnetic field on properties of electrodeposited FeCo layer
5 trang 23 0 0 -
The role of diazacrown ether in the enhancement of the biological activity of silver nanoparticles
11 trang 21 0 0 -
17 trang 20 0 0
-
Spectroscopic investigation of defect-state emission in CdSe quantum dots
8 trang 20 0 0 -
20 trang 19 0 0
-
20 trang 19 0 0
