7 results about "Excited singlet" patented technology

A method includes applying an optical pulse to a fluorophore to drive the fluorophore from a ground singlet state to an excited singlet state. In response, the fluorophore undergoes an intersystem crossing from the excited singlet state to a metastable triplet state. A microwave pulse is then applied to the fluorophore to at least partially transfer the fluorophore from an initial spin-qubit state to an encoded spin-qubit state. A second optical pulse may be applied to the fluorophore to drive the fluorophore from the metastable triplet state to a higher-energy triplet state, wherein the fluorophore undergoes a reverse intersystem crossing to an excited singlet state. A photon emitted by the fluorophore, in response to the fluorophore decaying from the excited singlet state to the ground singlet state, is then detected.

According to the phenothiazine functional precursor, the photosensitizer and the preparation method of the phenothiazine functional precursor, halogen or thienyl is introduced into R1 and / or R2 sites of a benzophenothiazine structure to serve as heavy atoms on the basis of structure-function relationship research of benzophenothiazine site modification, generation of strong spin-orbital coupling can be promoted, and the photosensitizer has the advantages that the photosensitizer can be used as a photosensitizer; further, intersystem crossing of the phenothiazine photosensitizer from an excited singlet state (S1) to a triplet state (T1) is promoted, so that the photosensitive effects of the phenothiazine functional precursor and the corresponding phenothiazine photosensitizer are effectively improved. Besides, after the phenothiazine photosensitizer is modified by adding a tetrazine group, controllable closing and opening of phenothiazine are realized, so that the dark toxicity of phenothiazine is effectively reduced, the targeting property and the treatment effect of the photosensitizer are improved by accessing a targeting group and a drug group into the phenothiazine photosensitizer, and the phenothiazine photosensitizer has a wide application prospect.

To provide an organic light-emitting device with excellent color purity. 【Solution means】The light-emitting layer contains a first compound and a second compound. The first compound is a compound having a luminescence lifetime of 500 [nsec] or more, or a difference between the lowest excited singlet energy and the lowest excited triplet energy of 0.25 [eV] or less. The second compound is a fluorescent light-emitting material. An organic light-emitting device characterized by satisfying the following formula [1]. 8000≦(S1(A)-E(λ max ))×ε [1] S1(A) [eV]: The lowest excited singlet energy of the first compound λ max [nm]: The absorption peak wavelength located on the longest wavelength side among the absorption spectra of the second compound E(λ max ) [eV]: The energy corresponding to λ max ε [M -1 ·cm -1 : The molar absorption coefficient of the second compound at λ max [nm]

The invention discloses a coumarin modified fluorescent organic silicon pressure-sensitive adhesive based on click reaction and a preparation method thereof, and relates to a coumarin modified fluorescent organic silicon pressure-sensitive adhesive and a preparation method thereof. The invention aims to solve the problem of poor adhesion performance of the existing organic silicon pressure-sensitive adhesive. The organic silicon pressure-sensitive adhesive can be simply, conveniently and effectively synthesized through cross-linking and thermocuring of a click reaction between vinyl in the vinyl silicone resin and sulfydryl on the coumarin modified mercaptopropyl silicone rubber, and the coumarin forms a rigid fused ring conjugated pi electron system due to benzo alpha-pyrone mother nucleus of the coumarin, so that the organic silicon pressure-sensitive adhesive can be used for preparing the organic silicon pressure-sensitive adhesive. After coumarin molecules absorb ultraviolet light, pi electrons in a conjugated system are transited to a high-energy excitation singlet state and then rapidly relaxed to the lowest excitation singlet state through internal conversion and vibration relaxation, and part of energy is dissipated as heat energy in the process; finally, the molecules in the lowest excitation singlet state release energy in a radiative transition mode to return to the ground state, and fluorescence is generated. The invention belongs to the technical field of pressure-sensitive adhesive preparation.

The organic light emitting element having a light emitting layer containing the first to fourth organic compounds satisfying the following formulae has a long light emitting life and is stable. The second organic compound is a delayed fluorescence material, and the light emission amount from the fourth organic compound is the largest.E S1 represents the lowest excited singlet state energy, E T1 represents the lowest excited triplet state energy.E S1 (1) > E S1 (4) > E S1 (2) > E S1 (3), E T1 (1) > E T1 (2) > E T1 (3) > E T1 (4).

An organic light-emitting element characterized in that: a light-emitting layer contains a first compound and a second compound; the first compound has an emission lifetime of at least 500 [nsec] or has a difference between the lowest excited singlet energy and the lowest excited triplet energy of at most 0.25 [eV]; the second compound is a fluorescence material; and the organic light-emitting element satisfies expression [1].　[1] 8000≤(S1(A)-E(λmax))×ε, where S1(A) [eV] is the lowest excited singlet energy of the first compound, λmax [nm] is the absorption peak wavelength located most toward the longer wavelength side in the absorption spectrum of the second compound, E(λmax) [eV] is the energy corresponding to λmax, and ε [M-1·cm-1] is the molar absorption coefficient of the second compound at λmax [nm]

An organic electroluminescent device having a cathode and an anode and an organic light-emitting layer interposed between the two electrodes, and the light-emitting layer contains organic molecule I, organic molecule II and organic molecule III, wherein the organic molecule I is a host material, the organic molecule II is a sensitizing material, the organic molecule III is a light-emitting material, and the organic molecule I, the organic molecule II and the organic molecule III satisfy the condition represented by the following formula (A), Formula (A): E S1 (I) > E S1 (II) > E S1 (III) in the above formula (A), E S1 (I) represents the lowest excited singlet state energy level of the organic molecule I, E S1 (II) represents the lowest excited singlet state energy level of the organic molecule II, E S1 (III) represents the lowest excited singlet state energy level of the organic molecule III.