44results about How to "Conjugate plane large" patented technology

The invention provides a D-A type conjugated polymer containing fused ring lactone, its preparation method and application. The structural formula of the D-A type conjugated polymer containing fused ring lactone provided by the present invention is shown in formula I. The present invention introduces the fused-ring lactone group into the conjugated main chain of the polymer, thereby broadening the conjugation plane of the polymer molecule, promoting the π-π stacking between the molecules, and reducing the intermolecular π-π stacking of the polymer. Steric hindrance. The D-A type conjugated polymer containing fused ring lactone provided by the present invention has good solubility and photoelectric properties, as well as excellent light absorption and carrier transport properties, and can achieve higher performance in organic solar cells. Short circuit current and energy conversion efficiency.

The invention discloses a spirobifluorene fluorescence probe which is 2,7-di(benzimidazole) spirobifluorene. According to the invention, the structural formula of a product is shown in a formula (I). The preparation method of the spirobifluorene fluorescence probe comprises the following steps: carrying out coupling reaction, bromination, Grignard reaction, dehydration cyclization reaction and oxidization reaction on parabromotoluene which is used as a raw material so as to obtain a spirobifluorene dialdehyde compound; and reacting the spirobifluorene dialdehyde compound with o-phenylenediamine to obtain the compound (I). According to the invention, the raw material is cheap and available, the synthesis route is simple, the yield is high, and the preparation method is suitable for large-scale production. Because the three-dimensional rigid structure of spirobifluorene is introduced, the compound (I) has high fluorescence quantum yield and fluorescence intensity; the compound (I) has high sensitivity and good selectivity when being used for silver ion detection, detection limit of naked eye can reach 10<-5>M, and the detection limit of an instrument can reach 10<-6>M; the response time of the compound (I) on the silver ion is less than 2 seconds; and simultaneously, the compound (I) is a pH fluorescence probe having wide response range and has a good application prospect.

The invention discloses a rare-earth compound olefin monomer having the following structural formula (I) and containing polymerized functional group. In the formula (I), Re represents a trivalent rare-earth ion, and R represents an organic group. The rare-earth compound olefin monomer with the polymerized functional group has good solubility, high stability and high luminous efficiency, can be used as a new optical material applied in multiple luminous application fields, and also can be used for preparing a photoluminescence functional composite material by using polymethylmethacrylate as matrix.

The invention discloses a benzothiazole-cyanophenyl compound serving as a hydrazine fluorescence probe. The benzothiazole-cyanophenyl compound has a structural formula as shown in (I); the compound is prepared by performing cyclodehydration with bromobenzaldehyde and 2-amino-4-chloro thiophenol serving as the raw materials, then performing coupled reaction in order to connect with a bromobenzaldehyde derivate, and finally performing Knoevenagel reaction with malononitrile. The benzothiazole-cyanophenyl compound has the advantages that the raw materials are low in price and easy to gain, the synthetic route is simple, and the yield is relatively high; rigid structures such as benzothiazole and phenylacetylene groups are introduced into such a fluorescence probe, thus high fluorescence quantum efficiency is realized, and relatively high thermal stability and dissolubility are brought. The probe adopts the photoinduced charge transfer mechanism and the conjugate passivation mechanism, therefore, a response range respect to hydrazine can be expanded; the probe has the characteristics of being fast in response, high in sensitivity and high in selectivity, is suitable for being applied to safety detection of foods as well as safety detection of a laboratory, in particular applied to industrial wastewater monitor; and the probe has a wide application prospect in environment monitoring, ecological protection, disease diagnosis, industrial production and pollution discharge inspection.