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A kind of phenothiazine co-sensitizer and its preparation method and application

A phenothiazine and sensitizer technology, applied in the field of phenothiazine co-sensitizers and their preparation, can solve the problems of insufficient spectral response and the like

Active Publication Date: 2020-10-30
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problem of insufficient spectral response of a single dye, a phenothiazine co-sensitizer and its preparation method and application in solar cells are provided, by combining the co-sensitizer of the present invention with a porphyrin dye YD2-O-C8 jointly sensitizes titanium dioxide, and the conversion efficiency of the prepared solar cell increases from 7.42% sensitized by a single porphyrin dye YD2-O-C8 to 8.78% after co-sensitization

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  • A kind of phenothiazine co-sensitizer and its preparation method and application
  • A kind of phenothiazine co-sensitizer and its preparation method and application
  • A kind of phenothiazine co-sensitizer and its preparation method and application

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Embodiment 1

[0037] The specific preparation method of the present embodiment phenothiazine co-sensitizer is:

[0038] (1) Synthesis of Compound 1: At room temperature, add phenothiazine (10.00 g, 50.18 mmol) in the above synthesis route into a three-necked flask, then add N,N-dimethylformamide (80 mL), and The temperature of the mixture was lowered to 0° C., sodium hydrogen (2.41 g, 100.37 mmol) was added slowly and uniformly in batches, and stirred at room temperature for 1 hour. Afterwards, n-bromooctane (19.38g, 100.37mmol. liquid at room temperature, 17.6mL) was slowly added dropwise, reacted at room temperature for 8 hours, and the concentration of the reactant was basically unchanged by thin-layer chromatography. Chloromethane (200mL) was extracted, the organic phase was dried with anhydrous sodium sulfate, filtered and then rotary evaporated under reduced pressure, the residue was purified by 200-300 mesh silica gel column chromatography (petroleum ether / ethyl acetate=100 / 1), vacuu...

Embodiment 2

[0052] The specific preparation method of the present embodiment phenothiazine co-sensitizer is:

[0053] (1) Synthesis of Compound 1: At room temperature, the phenothiazine (10.00 g, 50.18 mmol) in the above synthesis route was added to a three-necked flask, followed by adding tetrahydrofuran (150 mL), and the temperature of the mixture was lowered to 5 ℃, sodium hydrogen (2.68g, 125.5mmol) was slowly and uniformly added in batches, and stirred at room temperature for 0.8 hours. Slowly add n-bromooctane (16.47g, 85.3mmol, liquid at room temperature, 14.9mL) dropwise thereafter, react at room temperature, trace the reactant concentration by thin-layer chromatography, the reaction is complete, quench with ice water and use ethyl acetate (250mL) extraction, the organic phase was dried with anhydrous magnesium sulfate, filtered and rotary evaporated under reduced pressure, the residue was purified by 200-300 mesh silica gel column chromatography (petroleum ether / ethyl acetate=100...

Embodiment 3

[0061] The specific preparation method of the present embodiment phenothiazine co-sensitizer is:

[0062] (1) Synthesis of Compound 1: At room temperature, add the phenothiazine (10.00g, 50.18mmol) in the above synthesis route into a three-necked flask, then add N,N-dimethylformamide (200mL). The temperature of the mixture was lowered to 8° C., and sodium hydrogen (3.61 g, 150.5 mmol) was slowly and uniformly added in batches, and stirred at room temperature for 0.6 hours. Slowly add n-bromooctane (14.54g, 75.3mmol, liquid at room temperature, 13.2mL) dropwise thereafter, react at room temperature, trace the reactant concentration by thin-layer chromatography, the reaction is complete, quench with ice water and use chloroform (300mL) extraction, the organic phase was dried with anhydrous sodium sulfate, filtered and then rotary evaporated under reduced pressure, the residue was purified by 200-300 mesh silica gel column chromatography (petroleum ether / ethyl acetate=100 / 1), and...

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Abstract

The invention relates to a phenothiazine co-sensitizer and its preparation method and application. The co-sensitizer uses phenothiazine as a raw material and is prepared by suzuki coupling, borate esterification, bromination, hydrolysis and other reactions. The target co-sensitizer compound was obtained. The co-sensitizer of the present invention has a 2D-π-2A structure, with double-long carbon chain modified phenothiazine as the electron donor end, and a double carboxyl group as the electron acceptor end and simultaneously as an anchoring group. This structure has two A carboxyl group is used as an anchor group, so it will have good adsorption stability. After co-sensitization with porphyrin dye YD2‑O‑C8, it has a better effect, and the conversion efficiency of solar cell devices can be increased to 8.78%. The increase is about 18%. This structure is beneficial to fill the adsorption gap between the main porphyrin dyes, so that it can also play a role in reducing charge recombination on the basis of increasing the short-circuit current.

Description

technical field [0001] The invention relates to the technical field of organic dyes and their synthesis, in particular to a phenothiazine co-sensitizer and its preparation method and application. Background technique [0002] Energy is a material resource in nature that can provide some form of energy for human beings. Since the 21st century, energy has been the biggest obstacle to check and balance human development. The current problems faced by human beings are exactly: exhaustion of energy resources and serious environmental pollution. Therefore, it is necessary to find some energy sources that can guarantee long-term sufficient supply and will not cause environmental pollution. How to develop new energy and realize energy greening has become the top priority for the development of countries all over the world. Among renewable energy sources, solar energy has large reserves and is green and non-polluting. The development potential is the greatest, so the research and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D417/14H01G9/20H01G9/042
CPCC07D417/14H01G9/2031H01G9/2059Y02E10/542
Inventor 贾海浪彭智杰李珊珊龚炳泉顾磊关明云
Owner JIANGSU UNIV OF TECH
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