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A self-regulated photoelectric conversion molecule and its preparation method

A photoelectric conversion and molecular technology, applied in photovoltaic power generation, chemical instruments and methods, circuits, etc., can solve the problems of reduced photoelectric conversion efficiency and inability to switch conductivity

Active Publication Date: 2020-05-05
合肥机数量子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Castellanos et al. found that the charge recombination rate of connecting a non-conductive molecule between the donor and the acceptor is much lower than that of the conductive molecule, but the disadvantage is that this design cannot realize the switching of conductivity, conduction and non-conduction Corresponding to two independent systems respectively, then in the non-conductive system, although the charge recombination is suppressed, the charge transfer may also be suppressed, which will still lead to a decrease in the photoelectric conversion efficiency

Method used

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  • A self-regulated photoelectric conversion molecule and its preparation method
  • A self-regulated photoelectric conversion molecule and its preparation method
  • A self-regulated photoelectric conversion molecule and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Preparation of 4,4'-diiodoazobenzene (I-azo-I):

[0099] (1) Use aniline as a precursor, put it into a four-necked flask, and after fully stirring, slowly add powdered iodine in batches, finish adding within 30 minutes, and continue stirring for 30 minutes until the reaction ends;

[0100] (2) Add the reaction solution to saturated NaHSO 3 Stir in the solution, filter with suction, and recrystallize the obtained solid with petroleum ether to obtain p-iodoaniline crystals;

[0101] (3) Add p-iodoaniline, potassium permanganate, copper sulfate pentahydrate and chloroform in the round bottom flask, stir and reflux for 48h, until the reaction is finished;

[0102] (4) Filtration, the reaction residue was washed with saturated sodium thiosulfate solution, brine and water successively, the solvent was evaporated under reduced pressure, and then separated and purified by column chromatography (eluent: sherwood oil / ethyl acetate=6 / 1 ) to obtain 4,4'-diiodoazobenzene as a soli...

Embodiment 2

[0104] Preparation of phenylacetylene (D 1 ):

[0105] (1) Add styrene and CCl in the three-necked flask 4 , stir evenly, cool to 5~15°C, slowly drop Br under stirring 2 CCl 4 Solution, continue to stir and react for 30-60min, filter to obtain dibromophenylethane solid;

[0106] (2) Dibromophenylethane solid, KOH and CH 3 OH was added to the three-necked flask, heated to reflux for 1-2 hours, cooled, filtered, the filtrate was extracted with ether, the upper layer solution was collected, subjected to atmospheric distillation, and then purified by vacuum distillation to obtain phenylacetylene liquid.

Embodiment 3

[0108] Preparation of 4-phenyl-2,2’,6’,2”-terpyridine platinum chloride complex (APh-Cl):

[0109] (1) Dissolve diacetylpyridine and benzaldehyde in ethanol, then add NaOH solution, stir for 30min, add the ethanol solution of ammonium acetate, stir at normal temperature for 3d, solids are produced, add a large amount of water until no precipitation, Suction filtration, the filter cake was washed with dichloromethane and saturated sodium bicarbonate respectively, dried with anhydrous magnesium sulfate, and then recrystallized with ethanol to obtain 4-phenyl terpyridine crystals;

[0110] (2) Dissolve 4-phenyl terpyridine crystals in hot acetonitrile, and slowly add K thereto 2 PtCl 4 Aqueous solution, heating, reflux reaction 24h, until the end of the reaction;

[0111] (3) After the reaction solution was cooled, it was suction filtered, and the filter cake was washed with water, dichloromethane, and ether in sequence, and dried to obtain a solid of 4-phenyl-2,2',6',2"-terpyr...

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Abstract

The invention provides a self-regulating photoelectric conversion molecule, comprising: an optical switch molecule; an electron donor connected to one end of the optical switch molecule through a covalent bond; an electron donor connected to the other end of the optical switch molecule through an acetylene group. An electron acceptor; the photoswitching molecule is a group comprising a photochromic compound; the electron donor is a group that can provide electrons; the electron acceptor has the ability to accept electrons and is more electronegative than the electron donor groups of bodies and photoswitching molecules. The self-regulating photoelectric conversion molecule can efficiently collect solar energy and convert it into excited state electronic energy. It is initially in the "open" configuration, and electrons are transferred from the donor and the optical switch to the acceptor under light, triggering the automatic closing of the optical switch, blocking the charge flow inside the molecule, and the excited electrons cannot return to recombine, realizing the charge in the organic molecular system High-efficiency separation; until the excited electrons are consumed, the closed optical switch absorbs light and switches back to the open state, realizing an automatic cycle.

Description

technical field [0001] The invention relates to the technical field of photoelectric conversion and new energy materials, in particular to an automatically regulated photoelectric conversion molecule and a preparation method thereof. Background technique [0002] With the reduction of traditional energy fuels, the pollution to the environment is becoming more and more serious, and the energy problem has become an important factor that plagues human development. Compared with the use of fossil fuels, solar energy has incomparable advantages as an inexhaustible pollution-free energy source. At present, there are roughly three ways to utilize solar energy: (1) conversion of solar energy into electrical energy, that is, photoelectric conversion; (2) conversion of solar energy into thermal energy, that is, photothermal conversion; (3) conversion of solar energy into chemical energy, that is, photochemical conversion. The rapid development of solar cells in recent years is to use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/00H01L51/46
CPCC07F15/0086H10K85/346Y02E10/549
Inventor 江俊伍子夜罗毅
Owner 合肥机数量子科技有限公司
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