A novel ionic liquid stabilized molecularly imprinted optosensing material based on quantum dots and graphene oxide for specific recognition of vitamin E

Molecularly imprinted upconversion nanoparticles for highly selective and sensitive sensing of Cytochrome c

“…Recently, a dual-modality molecular tumor probe was prepared by covalently attaching antitumor antibody to polyethylene glycol (PEG) modified UCNPs. The results showed that both subcutaneously transplanted tumors and intraperitoneally transplanted tumors are successfully detected by MRI and UCL imaging (Liu et al, 2013a(Liu et al, , 2013b. It is well known antibodies are widely used for sensing materials due to its high specificity (Funari et al, 2015).…”

“…Compared with antibody, molecularly imprinted polymers (MIPs) possess excellent mechanical and chemical stability, ease of preparation, low cost and are reusable. The recognition materials that combine the high selectivity of MIP with high sensitivity of QDs have been reported Liu et al, 2013aLiu et al, , 2013bLiu et al, , 2014. Zhang et al (2011) reported chemosensory materials which were prepared by coating MIP to the surface of the 3-mercaptopropionic acid (MPA) stabilized QDs for selective recognition of the Cytochrome c. The results of experiment showed that the composite could selectively recognize the template.…”

Molecularly Imprinted Polymers as Tools for Bioassays and Biotransformation

“…The proposed method was successfully applied for the determination of trace dopamine in human urine samples. Liu et al introduced graphene oxide (GO) to MIP to provide a large specific surface area and increase the mass-transfer rate [20]. Then they further used ionic liquid to improve the fluorescence stability of QDs by virtue of its high thermal and chemical stability.…”

Optical Sensors Based on II-VI Quantum Dots

“…Vitamins, which are found in many animal and plant tissues, play an essential role in proper metabolism and maintenance of body cells. Disorders in their synthesis or metabolism may be the cause of many serious diseases, hence the invention of sensitive and fast sensor devices is significant [112,113,114,115,116]. An exemplary QDs-based sensors for determination of vitamins are presented in Table 10.…”

“…Liu et al [112] prepared a novel optosensing material based on quantum dots and graphene oxide for specific determination of Vitamin E. Ultra-high specific surface was obtained by synthesis of molecular imprinted polymer (MIP), which was stocked for specific Vitamin E reaction area. Under optimal condition, the fluorescence intensity of MIP was decreased linearly with the increasing concentration of Vitamin E. Such constructed sensor exhibited good linear range from 2.30 × 10 −2 –9.20 × 10 2 μM with a LOD 3.5 nM.…”