108 results about "Copper nanoclusters" patented technology

The invention relates to an electrochemical biosensor for detecting glutathione and a preparing method thereof. The biosensor is a three-electrode system sensor, wherein the counter electrode is a platinum electrode, the reference electrode is a saturated calomel electrode, and the working electrode is a gold electrode. The electrochemical biosensor and the method are characterized in that: the gold electrode is modified with double-stranded DNA capable of being adopted as a copper nanocluster synthesis template. According to the electrochemical biosensor and the preparing method, high-affinity bonding of the glutathione and a copper ion is utilized, synthesis of copper nanoclusters on surfaces of the electrodes is inhibited, and indirect detection of the glutathione is achieved by performing electrochemical quantitative characterization on the copper nanoclusters. The linear range of detection of the glutathione is 1-1000 nM, and the detection limit is about 0.42 nM. The electrochemical biosensor and the method have advantages of simple operation, low cost, using convenience, high selectivity, and the like, so that the electrochemical biosensor and the method have large potential application value in the fields of biochemical research, clinical analysis, and other fields.

The invention relates to high-quantum-yield copper nanocluster fluorescent nanoflowers and a preparation method and application thereof in LEDs, wherein the copper nanocluster fluorescent nanoflowers are formed by dissolving Cu4I4 into dimethyl sulfoxide and then self-assembling with glycerol. The prepared Cu4I4 fluorescent nanoflowers have outstanding optical properties, the quantum yield reaches up to 64.5%, meanwhile, a series of LEDs with different light emitting colors such as yellow green, sky blue and white and good stability can be prepared through the Cu4I4 fluorescent nanoflowers and commercial blue fluorescent powder, and white light emitting LEDs can be prepared by mixing the Cu4I4 fluorescent nanoflowers and the commercial blue fluorescent powder according to the mass ratio of 4:5. A light-emitting copper cluster can successfully replace a light conversion material of a traditional material, and environment-friendly LEDs can be achieved. The preparation method of the copper nano-cluster fluorescent nanoflowers is simple, the super-bright white light LEDs can be prepared only through two kinds of fluorescent powder, and the cost is low; and the prepared LEDs have super-strong luminous intensity and meet the requirement of environmental protection.