41results about How to "Avoid Luminescence Quenching" patented technology

The invention discloses an immune chromatography test paper strip for the quantitative determination of clenbuterol based on up-conversion fluorescent nanoparticle label and a preparation method thereof. The test paper strip comprises a supporting layer, an adsorption layer, and a protection layer, wherein the adsorption layer comprises an adsorption fibrous layer, a fluorescent antibody fibrous layer, a cellulose film and an absorbent material layer at the handle end, the cellulose film is provided with detection blots printed by using a CL coupling carrier protein solution and control blots printed by using goat anti-mouse IgG antibodies, and the fluorescent antibody is an NaYF4:Yb:Er nanoparticle labelled CL monoclonal antibody or polyclonal antibody. According to the invention, the application of immune chromatography based on the up-conversion fluorescent nanoparticle label in the quantitative determination of CL residues is realized, so that the detection of the CL residues has no background interference; and the test paper strip has the advantages of strong specificity, high sensitivity, simple, and accurate detection, low cost, wide application scope, and easiness in popularization and application.

The invention provides a method for preparing a transparent fluorescent ultra-thin film composite material by using a layered vermiculite material and an organic fluorescent molecular material. It is prepared by a supramolecular assembly method, so that the prepared organic-inorganic fluorescent ultra-thin film composite material overcomes the simple organic fluorescent ultra-thin film composite material. materials and pure inorganic materials, and have the advantages of both, and realize the assembly of anion and anion body at the same time, the prepared fluorescent composite material has a longer fluorescence lifetime, has the characteristics of transparency and solidification, and has great High promotion and application value.

The invention relates to a benzimidazole n-type dopant, which has an organic ion salt containing benzimidazole halogen anion with a structure shown as formula (1), a neutral n-type doping material with a structure shown as formula (2) or a dimer n-type doping material with a structure shown as formula (3). When used as a dopant of an electron transport material, the benzimidazole n-type dopant canenhance electron injection, improve the film electron mobility and carrier concentration, increase device current density, and improve the device efficiency and stability.

The invention discloses an ionic ring metal iridium complex liquid crystal luminescent material and an application thereof. The cyclic metal iridium complex liquid crystal luminescent material uses phenylpyridine as anion ligand and bipyridine derivative as N N ligand. The metal liquid crystal luminescent material with non-planar structure is constructed by using the ring metal iridium complex as the luminous core and the biphenyl derivative as the mesogen. Using the cyclometallic iridium complex as the light-emitting layer, a non-doped single-light-emitting layer polarized electroluminescent red light device with a polarization ratio of 4 is obtained by rubbing alignment.

The invention discloses a COVID-19 antigen detection card, its preparation method and application, and belongs to the field of nanomaterials and nanomedicine, wherein the rare earth nanoprobe used is sodium yttrium fluoride coated with sodium erbium fluoride with a core-shell structure , the particle size is 20nm~30nm, and its composition is: NaErF 4 @NaYF 4 , where NaErF 4 It is an all-erbium-doped core structure; NaYF4 is a shell layer, and @ means that NaYF4 is coated on NaErF 4 surface. The nanoprobe of the present invention is a rare earth fluoride nanomaterial, which has the advantages of low background, long luminescent life, strong fluorescent signal, and high signal-to-noise ratio. The labeling is connected to the new crown monoclonal antibody through a covalent bond, and the labeling product is stable and has With the characteristics of high sensitivity, high accuracy, fast and easy detection, etc., it can screen and detect throat swabs, nasal swabs, nasopharyngeal swabs and saliva samples of patients suspected of having a new crown in the early stage, and can quickly and specifically help clinical diagnosis.

The invention discloses an inverted green light quantum dot thin film electroluminescent device, which comprises a substrate, a cathode, an electron transport layer, a green light quantum dot luminescent layer, a hole balance layer, a hole transport layer and an anode stacked in sequence. The hole transport layer includes a third hole transport layer, a second hole transport layer and a first hole transport layer stacked in sequence. The thickness of the hole balancing layer is 5nm˜10nm. The HOMO energy levels of the third hole transport layer, the second hole transport layer, and the first hole transport layer decrease sequentially, thereby forming a step barrier between the green light quantum dot light-emitting layer and the anode to gradually increase the hole density. The hole injection capability of the transport layer meets the hole injection requirements of the green light quantum dot thin film electroluminescence device. Further, the hole balancing layer can prevent the high-mobility first hole-transporting material from directly contacting the green light quantum dot light-emitting layer, so as to avoid luminescence quenching.

The invention relates to an organic electroluminescence device with high electronic filling efficiency and a preparation method of the organic electroluminescence device. The organic electroluminescence device comprises a glass base plate, an anode, a hole filling layer, a hole transmitting layer, a luminescence layer, an electronic transmitting layer, an electronic filling layer and a cathode, wherein the anode, the hole filling layer, the hole transmitting layer, the luminescence layer, the electronic transmitting layer, the electronic filling layer and the cathode are sequentially stacked on the glass base plate from bottom to top, the electronic transmitting layer is divided into an upper electronic transmitting layer and a lower electronic transmitting layer, an Al membrane electrode layer with a lattice structure is arranged between the upper electronic transmitting layer and the lower electronic transmitting layer, voltage U1 is connected in parallel between the cathode and the Al membrane electrode layer with the lattice structure, and voltage U2 is connected in parallel between the anode and the Al membrane electrode layer with the lattice structure. Through the addition of the Al membrane electrode layer with the lattice structure, the electronic filling efficiency and the luminescence efficiency of the organic electroluminescence device can be effectively improved. Because the Al membrane electrode layer with the lattice structure is in a hollow structure, the electronic transmitting layer is still a whole, the interface potential barrier cannot be increased, and in addition, the voltage exerted on the electronic transmitting layer can be changed. The electronic transmitting capability is enhanced for reaching the current carrier filling balance.

The invention discloses a rare earth-doped multi-layer luminescent glass fully covered in the near-infrared band, which is a rare-earth-doped multi-layer luminescent glass fully covered in the near-infrared band. It is characterized in that the multi-layer luminescent glass includes the following two layers of luminescent glass layer; wherein, the raw material of the first luminescent glass layer contains functional component A: the functional component A contains YbF 3 , TmF 3 、HoF 3 and ErF 3 ; The raw material of the second luminescent glass layer contains NdF 3 . The invention also discloses the preparation method and application of the glass. The multi-layer luminous glass described in the present invention has a wide coverage range of wave bands and high luminous intensity. The invention also provides a preparation method of the multilayer luminescent glass and its application as an optical fiber in optical fiber communication devices such as optical fiber amplifiers. The use of the multi-layer luminescent glass can realize near-infrared full-band luminescence in the same device, and provides a basis for the miniaturization of near-infrared devices.

The invention discloses an organic blue luminescent material whose general structural formula is shown as I, wherein, Ar 1 and Ar 2 are the same or different aryl groups, R 1 and R 2 same or different, R 1 and R 2 are independently selected from alkyl or aryl. The invention also discloses a preparation method of the organic blue luminescent material. The organic blue luminescent material can be synthesized through a simple one-step C-N coupling reaction, the yield can be as high as 98%, and the luminescent quantum efficiency is 0.43. The prepared organic blue light-emitting material has the characteristics of simple structure, easy preparation, high luminous efficiency and the like. The organic blue luminescent material obtained by the invention has potential applications in fields such as organic electroluminescent devices.