Xanthene

About: Xanthene is a research topic. Over the lifetime, 2132 publications have been published within this topic receiving 34803 citations. The topic is also known as: Xanthene & dibenzo[a,e]pyran.

Xanthene fluorescent dye molecular fluorescent probe as well as preparation method and application thereof

Abstract: The invention discloses a xanthene fluorescent dye molecular fluorescent probe. Under different acid and alkali conditions, a fluorescent dye is transformed between isomers of a single loop coil open loop and a double-loop coil open loop, and the structure transformation ensures that a conjugated system of the dye is changed, and the color of a corresponding solution, the wavelengths for absorption and emission peaks and the fluorescence intensity are changed; and a xanthene fluorescent dye is used for preparing a xanthene fluorescent dye esterification derivative which can be used as a fluorescent molecular probe material to realize fluorescent detection of NADH. The xanthene fluorescent dye molecular fluorescent probe disclosed by the invention has the advantages that the molecular fluorescent probe has a double-loop coil hexatomic ring condensing system, the release of optical signals of the dye is controlled by the double-loop coil structure, and a switch of the loop coil structure is used for adjusting and controlling a fluorophore xanthene conjugated system in the whole molecular structure, and widening the adsorption and emission wavelengths of the conjugated system to ensure that the optical signal intensity is changed correspondingly; and the probe material is quick in response to NADH, high in selectivity and good in biological membrane permeability, and a preparation method of the probe material is simple and feasible, low in cost and obvious in economic and technical effects.

Organic compound with xanthene and application thereof in OLED (organic LED) devices

Abstract: The invention discloses an organic compound with xanthene and application thereof in OLED (organic LED) devices; the organic compound has a structural general formula shown as in formula (1). The organic compound provided herein has high vitrification temperature and high molecular thermal stability, has suitable HOMO and LUMO energy levels and high Eg, and by optimizing device structure, it is possible to effectively improve photoelectric properties of OLED devices and prolong the lives of the OLED devices.

Rhodamine B-based fluorescence sensor and preparation

Abstract: The invention discloses a rhodamine B-based fluorescence sensor and preparation. The preparation comprises the following steps: dissolving 3-(3',6'-bi(diethyl amino)-3-oxaspiro[isoindoline-1,-1,9'-xanthene]-2-yl) propanal (A) in methyl alcohol, adding 6-aminocaproic acid (B), and stirring at room temperature; dissolving sodium triacetoxyborohydride in tetrahydrofuran, adding to a reaction liquid in the step 1, and further carrying out stirring reaction at room temperature; dropwise adding a saturated sodium bicarbonate solution to the reaction liquid, and further stirring; and removing a solvent by virtue of a rotary evaporator, and separating by using a thin layer chromatography, so as to obtain a target product. The rhodamine B-based fluorescence sensor is relatively simple in synthesis step; resources are saved; and nearly all the reported fluorescence probes can only be applied to an organic solvent or an organic water solution, thus the application of the fluorescence sensor in the fields of actual water sample analysis and life is limited.

Organic compound with xanthene as core and use thereof

Abstract: The invention discloses an organic compound with xanthene as a core and a use thereof. The organic compound has a general structural formula (1). The compound has a high glass transition temperature and molecular thermal stability, is suitable for HOMO and LUMO energy levels, has high Eg, and can effectively prolong the photoelectric performances of an OLED device and a service life of the OLED device through device structure optimization.