KR101547843B1 - Novel alkylhalide compounds and method for preparing the same - Google Patents
Novel alkylhalide compounds and method for preparing the same Download PDFInfo
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Abstract
The present invention relates to a novel alkyl halide compound and a process for preparing the same. The alkyl halide compound according to the present invention is applied to all polymers and monomers used in organic semiconductors, and thus the organic semiconductor material into which the novel alkyl group is introduced has a solubility And various solvents are added to facilitate the production of devices through solution processes such as spin coating, die casting, and printing, and the device characteristics can be improved by controlling the shape and crystallinity of the film.
Description
The present invention relates to a novel alkyl halide compound and a process for preparing the same. The alkyl halide compound according to the present invention is applied to all polymers and monomers used in organic semiconductors, and thus the organic semiconductor material into which the novel alkyl group is introduced has a solubility And various solvents are added to facilitate the production of devices through solution processes such as spin coating, die casting, and printing, and the device characteristics can be improved by controlling the shape and crystallinity of the film.
Organic Thin Film Transistor is an electronic device which research and development has been actively carried out recently due to its many merits. Especially it is easy to manufacture flexible electronic circuit board which is simple and low cost and can be bent or folded without being broken by impact. Lt; / RTI >
In addition, compared with the conventional thin film transistor using amorphous silicon and polysilicon, the organic thin film transistor has a simple manufacturing process, can be manufactured at a low cost, and is excellent in compatibility with substrates mounted with other electronic parts. .
The organic thin film transistor device comprises a substrate, a gate electrode, an insulating film, a channel layer, a source / drain electrode, and a protective layer for preventing external moisture and oxygen permeation. The organic thin film transistor is fabricated by replacing the existing silicon based inorganic material with the organic compound or the polymer material which exhibits the semiconductor characteristic, which is the key part of the charge transfer which has the greatest influence on the device characteristics.
The organic semiconductor compound constituting the organic thin film transistor can be divided into a low molecular weight and a high molecular weight depending on the molecular weight, and classified into an n-type organic semiconductor or a p-type organic semiconductor depending on whether electrons or holes are delivered.
In general, when a low-molecular organic semiconductor is used for forming an organic semiconductor layer, a low-molecular organic semiconductor can be easily purified and can remove almost any impurities, so that the charge transfer property is excellent. However, since spin coating and printing are impossible, The manufacturing process is complicated and costly compared to the polymer organic semiconductor. In the case of polymer organic semiconductors, purification with high purity is difficult, but heat resistance is excellent, and spin coating and printing are possible, which is advantageous in manufacturing process, cost, and mass production.
In particular, when a polymer organic semiconductor is used, the manufacturing cost can be reduced as compared with a low molecular weight organic semiconductor compound because it can easily form a thin film by a solution process.
Typical semiconductor compounds for polymeric organic thin film transistors developed to date include P3HT [poly (3-hexylthiophene)] and F8T2 [poly (9,9-dioctylfluorene-co-bithiophene)]. The performance of OTFT is various, but important evaluation scale is charge mobility and on / off ratio, and the most important evaluation measure is charge mobility. The charge mobility varies depending on the kind of the semiconductor material, the thin film forming method (structure and morphology), the driving voltage, and the like.
On the other hand, the polymer organic semiconductor compound has a disadvantage of low charge mobility which is an important evaluation measure of the OTFT performance. In order to overcome this disadvantage, Korean Patent Registration No. 1072477 discloses a polymer organic semiconducting compound having a thiophen group substituted with an alkyl group in a side chain ≪ / RTI >
However, development of polymeric organic semiconductors which are advantageous in manufacturing process and cost and capable of solution process, which have high charge mobility and low flicker ratio, which are still advantages of low molecular weight organic semiconductors, are required.
The present inventors have found that when various substituents are applied to polymers and monomers used in organic semiconductors in order to improve the solubility of organic semiconductor materials and improve the device characteristics, the inventors have found that both ends of a long carbon chain of at least five carbons An alkyl halide compound in which one terminal is substituted with a halogen atom and the other terminal is substituted with two alkyls is reacted with a polymer or a single molecule used in an organic semiconductor to increase the solubility and increase the device characteristics, And finally completed the present invention.
Accordingly, it is an object of the present invention to provide a novel alkyl halide compound which can be applied to an organic semiconductor material to improve solubility and device characteristics, and a method for producing the same.
The present invention relates to a novel alkyl halide compound and a process for preparing the same. The alkyl halide compound according to the present invention is applied to all polymers and monomers used in organic semiconductors, and thus the organic semiconductor material into which the novel alkyl group is introduced has a solubility And various solvents are added to facilitate the production of devices through solution processes such as spin coating, die casting, and printing, and the device characteristics can be improved by controlling the shape and crystallinity of the film.
Hereinafter, the present invention will be described in detail.
The present invention provides an alkyl halide compound represented by the following formula (1).
[Chemical Formula 1]
In Formula 1,
R 1 and R 2 are each independently (C5-C50) alkyl, (C5-C50) alkoxy, (C5-C50) alkoxycarbonyl, (C6-C50) aryl or (C6-C50) aryl (C5-C50) Alkyl;
L is a single bond or O;
X is I, Br or Cl; And
n is an integer from 2 to 50;
The alkyl halide compound of formula (I) of the present invention is characterized in that the halogen atom of the first carbon atom is substituted with the carbon atom of (n + 3) and R 1 and R 2 are substituted. Substituted with the conventional 3-carbon R 1 and R 2 is a halogen atom at a terminal of the opposite ends of the relative to is substituted at least in length consisting of a 5-carbon long carbon chain and the other terminus is substituted with the R 1 and R 2 When the alkyl group of the alkyl halide compound of formula (1) is introduced into the organic semiconductor material, it is possible to obtain a homopolymer and crystallinity which can increase the solubility and enhance the device characteristics.
In the alkyl halide compound of formula (I) of the present invention, preferably R 1 and R 2 are each independently (C 5 -C 50) alkyl or (C 6 -C 50) aryl (C 5 -C 50) From the viewpoint of solubility and excellent morphology and crystallinity, it is more preferable that the sum of the carbon numbers of R 1 and R 2 is 20 or more.
Specifically, the alkyl halide compound of Formula 1 according to the present invention may be represented by the following compounds, but is not limited thereto.
X is I, Br or Cl.
The alkyl halide compound of formula (1) according to the present invention can be applied to all polymers and monomers used in organic semiconductor materials and can exhibit excellent properties such as increase in solubility and device characteristics due to alkyl of alkyl halide compound of formula (1) . In particular, since the solubility is greatly improved due to the long carbon chain and substituted R 1 and R 2 at the terminals, it is possible to mass-produce the organic thin film transistor at a low cost in the solution process such as spin coating, die casting and printing It has cost saving effect.
In addition, when alkyl of the alkyl halide compound of formula (1) of the present invention is applied to all polymers and monomers used in the organic semiconductor material, it is in the form of a linear chain spacer, The solubility can be improved and the device manufacturing process can be facilitated and the performance of the organic semiconductor material can be improved. Specifically, it has a high degree of alignment and crystallinity between organic semiconductor materials, and further improves pi-p stacking by inducing interdigitation, The characteristics of the organic semiconductor can be remarkably improved.
The present invention also provides a process for producing an alkyl halide compound represented by the formula (1).
The present invention provides a method for producing an alkyl halide compound which is simpler and easier to apply industrially.
There are two methods for preparing the alkyl halide compound represented by the above formula (1) according to L.
One method is a process for preparing an alkyl halide compound wherein L is a single bond, comprising the steps of:
a) reacting the metal magnesium with a monohalide compound of the following formula (2) to prepare an alkyl magnesium halide compound of the formula (3); And
b) preparing an alkyl halide compound of formula (1-1) by transmetalation reaction of the alkylmagnesium halide compound of formula (3) with a dihalide compound of formula (4).
[Formula 1-1]
(2)
(3)
[Chemical Formula 4]
In the above formulas 1-1, 2, 3 and 4,
R 1 and R 2 are each independently (C5-C50) alkyl, (C5-C50) alkoxy, (C5-C50) alkoxycarbonyl, (C6-C50) aryl or (C6-C50) aryl (C5-C50) Alkyl;
L is a single bond or O;
X is I, Br or Cl; And
n is an integer from 2 to 50;
In order to produce the alkyl halide compound of Formula 1-1, the monohalide compound of
The amount of magnesium used in the step a) is related to the reaction time. The higher the amount used, the shorter the reaction time, but a large amount of acid is required for removal after completion of the reaction. Also, the reaction temperature is also related to the reaction time. When the reaction proceeds at a high temperature, the reaction time is shortened, but it is preferable to use an appropriate amount because there is an adverse effect that a side reaction is generated due to a vigorous reaction to generate a lot of side reactions. Therefore, the amount of magnesium used in the present invention is 0.5 to 5 equivalents, preferably 0.8 to 1.5 equivalents, based on the monohalide compound of
The reaction of step a) is carried out in an inert reaction medium, and the inert reaction medium is selected from the group consisting of diethyl ether, tetrahydrofuran, 2-methyltetrahydrofuran, t-butyl-methyl ether, diisopropyl ether, Chloride, 1,2-dimethoxyethane or bis (2-methoxyethyl) ether, or any mixture thereof.
The amount of the dihalide compound of formula (4) is preferably 1 to 5 equivalents based on the monohalide compound of formula (2). The reaction of step b) is preferably carried out at a temperature of -10 to 30 캜.
The reaction of step b) may further include a catalytic amount of a copper salt, a lithium salt, or a mixture thereof. The catalytic amount of the copper salt, the lithium salt, or a mixture thereof may be improved by increasing the yield And serves as a catalyst to help the metal substitution reaction occur well. Copper bromide (CuBr) and lithium chloride (LiCl) are preferably used.
Also, the reaction of step b) is carried out in an inert reaction medium, and the inert reaction medium is selected from the group consisting of diethyl ether, tetrahydrofuran, 2-methyltetrahydrofuran, t-butyl-methyl ether, diisopropyl ether, diphenyl Ether methylene chloride, 1,2-dimethoxyethane or bis (2-methoxyethyl) ether, or any mixture thereof.
When the reaction is completed, an acid is added to the reaction solution, extracted with an organic solvent, concentrated and subjected to column purification to obtain an alkyl halide compound of Formula 1-1. Examples of the extraction solvent include ethyl acetate, ether, benzene, toluene, nitrobenzene, methylene chloride, chloroform, and the like.
Another method is a method of reacting metal sodium with a monoor compound of the following formula (5) and then reacting it with a dihalide compound of the following formula (4) to prepare an alkyl halide compound of the following formula to be.
[Formula 1-2]
[Chemical Formula 5]
[Chemical Formula 4]
In Formula 1-2, 4 and 5, R 1 and R 2 are each independently (C5-C50) alkyl, (C5-C50) alkoxy, (C5-C50) alkoxycarbonyl, (C6-C50) aryl, or (C6-C50) aryl (C5-C50) alkyl;
L is a single bond or O;
X is I, Br or Cl; And
n is an integer from 2 to 50;
The amount of sodium used is 0.5 to 5 equivalents, preferably 0.8 to 1.5 equivalents, based on the monool compound of formula (5). Also, the reaction is carried out in a refluxing reaction in an inert reaction medium, wherein the inert reaction medium is selected from the group consisting of diethyl ether, tetrahydrofuran, 2-methyltetrahydrofuran, t-butyl-methyl ether, diisopropyl ether, diphenyl ether Methylene chloride, 1,2-dimethoxyethane or bis (2-methoxyethyl) ether, or any mixture thereof. The dihalide compound of formula (4) is preferably used in an amount of 1 to 5 equivalents based on the monool compound of formula (5).
When the reaction is completed, the reaction solution is extracted with an organic solvent, concentrated, and then subjected to column purification to obtain an alkyl halide compound of Formula 1-1. As the extraction solvent, ethyl acetate, ether, benzene, toluene, nitrobenzene, methylene chloride, chloroform and the like can be used.
The present invention relates to novel alkyl halide compound and a production method thereof, an alkyl halide compound according to the invention is substituted with a halogen atom at a terminal of the opposite ends of the long carbon chain lengths consisting of a five carbon to other terminal R 1 And R 2 are substituted. When the alkyl group of the alkyl halide compound of the formula (1) is introduced into the organic semiconductor material, it is possible to obtain a homopolymer and crystallinity which can increase the solubility and improve the device characteristics. In particular, since the solubility is greatly improved due to the long carbon chain and substituted R 1 and R 2 at the terminals, it is possible to mass-produce the organic thin film transistor at a low cost in the solution process such as spin coating, die casting and printing It is possible to improve the device characteristics by controlling the shape and crystallinity of the film as well as the effect of cost reduction.
1 is 1 H-NMR data of 15- (bromomethyl) hentriacontan prepared in Example 1. FIG.
2 is 1 H-NMR data of 15- (6-bromohexyl) hentriacontan prepared in Example 1. FIG.
3 is 1 H-NMR data of 11- (6-bromohexyl) tricoic acid prepared in Example 2. Fig.
4 is 1 H-NMR data of 11 - ((6-bromohexyloxy) methyl) tricoic acid prepared in Example 3.
Hereinafter, the present invention will be described in detail with reference to specific examples, but the present invention is not limited thereto.
[ Example 1] 15- (6- Bromohexyl ) Hentriacontan (15- (6-bromohexyl) hentriacontane)
2- Tetradecyl octadecane -1-ol (2- tetradecyloctadecan -One- be ) Synthesis of
Hexadecan-1-ol (50.0 g, 0.1032 mol), KOH (0.32 g, 0.0057 mol) and Ni powder (0.0625 g, 1.0645 mmol) were added to a well dried 500 mL three- And the temperature was raised to 250 ° C. The mixture was stirred under a nitrogen stream for 1 hour and then water was removed by simple distillation. The temperature was maintained at 250 ° C for 3 hours, the temperature was then lowered to room temperature, extracted with methylene chloride (MC), the organic layer was washed several times with water, and the solvent was removed using a rotary evaporator. The starting material was then removed using vacuum distillation to give the product, 2-tetradecyloctadecan-1-ol (34 g, 70.62%).
1 H-NMR (300 MHz, CDCl 3 ):? 4.86-4.85 (s, 1H), 3.67-3.53 (m, 2H), 1.58-155 (d, 1H), 1.28-1.21 H), 0.91-0.87 (t, 6H)
15- ( Bromomethyl ) Hentriacontan (15- (bromomethyl) hentriacontane)
Triphenylphosphine (17.9 g, 0.06544 mol) was added to the well-dried 500 mL three-necked round-bottomed flask and dissolved. The temperature was lowered to 0 ° C and bromine (10.5 g, 0.06544 mol) Was added dropwise and stirred for 10 minutes. 2-Tetradecyloctadecan-1-ol (25.5 g, 0.05462 mol) dissolved in MC was dropped and stirred for 16 hours. The organic layer was extracted with MC. The organic layer was washed with water, dried over MgSO 4, and then the solvent was removed using a rotary evaporator. The solvent was dissolved in hexane, and the impure solid (triphenylphosphine moiety reactant) was freely distilled, and the material dissolved in hexane was removed using a rotary evaporator. (22.56 g, 78%) of the desired compound, 15- (bromomethyl) hentriacontane, was isolated by column chromatography using n -hexane. [Figure 1]
1 H-NMR (300 MHz, CDCl 3 ):? 3.67-3.53 (m, 2H), 1.58-155 (d, 1H), 1.28-1.21 (m, 56H), 0.91-0.87 )
15- (6- Bromohexyl ) Hentriacontan (15- (6-bromohexyl) hentriacontane)
To a well-dried three-necked flask, magnesium Mg (0.78 g, 32.24 mmol, 1.4 eq.) Was added dropwise slowly to a solution of 15- (bromomethyl) hentriacontane (12.2 g, 23.02 mmol, 1 eq.) And THF And refluxed at 80 ° C for 1 hour to give 1- (2-tetradecyloctadecyl) magnesium bromide (in THF (30 mL)) (Preparation of organometallic reagent) ).
Dibromopentane (12.18 g, 52.96 mmol, 3 eq.), CuBr (33 mg, 0.23 mmol, 0.01 eq.) And LiCl (20 mg, 0.46 mmol, 0.02 eq.) Were added to a well- (50 mL) and the previously prepared organometallic reagent was slowly added dropwise while maintaining the temperature at -10 ° C. The temperature was then raised to room temperature and stirred for 16 hours. NH 4 Cl aqueous solution (50 mL) was added thereto, and the mixture was stirred for 10 minutes. Then, the mixture was extracted with ether, 2M hydrochloric acid and 10% Na 2 CO 3 aqueous solution, dried over MgSO 4 and the solvent was removed using a rotary evaporator. Thereafter, the starting material was removed by vacuum distillation, and then 15 (6- bromohexyl) heptanacontane (9.27 g, 67.11%) was obtained by column chromatography using hexane. [Figure 2]
1 H-NMR (300 MHz, CDCl 3 ):? 3.44-3.40 (m, 2H), 1.90-1.86 (m, 2H), 1.46-1.13 (m, 65H), 0.91-0.87
[ Example 2] 11- (6- Bromohexyl ) Tricalo acid (11- (6-bromohexyl) tricosane) Synthesis of
11- ( Bromomethyl ) Tricalo acid (11- ( bromomethyl ) tricosane ) Synthesis of
Triphenylphosphine (23.72 g, 0.0862 mol) was added to a well-dried 500 mL three-necked round-bottomed flask and dissolved in MC. The temperature was lowered to 0 ° C and bromine (13.84 g, 0.06544 mol) Was added dropwise and stirred for 10 minutes. Then, 2-decyltetradecan-1-ol (25.5 g, 0.0719 mol) dissolved in MC was dropped and stirred for 16 hours. The organic layer was extracted with MC. The organic layer was washed with water, dried over MgSO 4, and then the solvent was removed using a rotary evaporator. The solvent was dissolved in hexane, and the impure solid (triphenylphosphine moiety reactant) was freely distilled, and the material dissolved in hexane was removed using a rotary evaporator. n -hexane as an eluent to obtain 11- (bromomethyl) tricoic acid (27.2 g, 75.5%) as a target compound.
1 H-NMR (300 MHz, CDCl 3 ):? 3.47-3.33 (m, 2H), 1.57-153 (d, 1H), 1.29-1.21 (m, 40H), 0.91-0.86 )
11- (6- Bromohexyl ) Tricalo acid (11- (6- bromohexyl ) tricosane ) Synthesis of
(80.0 g, 0.191 mol, 1 equivalent) and THF (270 mL) were slowly added dropwise to a well-dried three-necked flask with magnesium Mg (6.50 g, 0.268 mol, during time by refluxing in 80 o C made of 1- (2-decyltetradecyl), magnesium bromide (1 - (2-decyltetradecyl) magnesium bromide) (THF (270 mL) and solution) (Preparation of an organometallic reagent).
Dibromopentane (110.13 g, 0.478 mol, 2.5 eq.), CuBr (0.27 g, 1.915 mmol, 0.01 eq.) And LiCl (0.162 g, 3.383 mmol, 0.02 eq.) Were added to a well- (320 mL) and the previously prepared organometallic reagent was slowly added dropwise while maintaining the temperature at -10 ° C. The temperature was then raised to room temperature and stirred for 16 hours. NH 4 Cl aqueous solution (50 mL) was added thereto, and the mixture was stirred for 10 minutes. Then, the mixture was extracted with ether, 2M hydrochloric acid and 10% Na 2 CO 3 aqueous solution, dried over MgSO 4 and the solvent was removed using a rotary evaporator. The starting material was then removed using vacuum distillation and column chromatography using hexane afforded the desired compound, 11- (6-bromohexyl) tricoic acid (76.25 g, 81.85%). [Figure 3]
1 H-NMR (300 MHz, CDCl 3 ):? 3.44-3.40 (m, 2H), 1.90-1.86 (m, 2H), 1.46-1.13 (m, 65H), 0.91-0.87
[ Example 3] 11 - ((6- Bromohexyloxy ) methyl ) Tricalo acid (11 - ((6-bromohexyloxy) methyl) tricosane Synthesis of
2-decyltetradecan-1-ol (30 g, 0.085 mol) was dissolved in THF (270 mL) and a metal Na (2.1 g, 0.0913 mol) was added to a well dried 500 mL three- ) And incubated for 2 hours at 70 o C < / RTI > 1,6-Dibromohexane (41 g, 0.168 mol) was slowly added dropwise, and the temperature was raised to 80 ° C and refluxed for 8 hours. When the reaction was completed, the reaction mixture was extracted with ether and Na 2 CO 3 aqueous solution, dried over anhydrous MgSO 4, and then the solvent was removed using a rotary evaporator. The desired compound 11 - ((6-bromohexyloxy) methyl) tricoic acid was obtained by column chromatography (31 g, 70.44%). [Figure 4]
1 H-NMR (300 MHz, CDCl 3 ):? 3.45-3.39 (m, 6H), 1.92-1.86 (m, 4H) ), 0.92-0.87 (t, 6H)
Claims (10)
b) a method for preparing an alkyl halide compound represented by the following formula (1-1) by subjecting the alkyl magnesium halide compound of the formula (3) to a metal substitution reaction at a temperature of -10 to 30 ° C with a dihalide compound represented by the following formula .
[Formula 1-1]
(2)
(3)
[Chemical Formula 4]
In the above Formulas 1-1, 2, 3 and 4, R 1 and R 2 are each independently (C 5 -C 50) alkyl or (C 6 -C 50) aryl (C 5 -C 50) alkyl; X is I, Br or Cl; And n is an integer from 2 to 50;
Wherein the amount of magnesium used in step a) is 0.5 to 5 equivalents based on the monohalide compound of formula (2).
Wherein the amount of the dihalide compound of formula (4) in step (b) is 1 to 5 equivalents based on the monohalide compound of formula (2).
Wherein each reaction of steps a) and b) is carried out in an inert reaction medium.
wherein the metal substitution reaction of step b) is carried out further comprising a catalytic amount of a copper salt, a lithium salt or a mixture thereof.
[Formula 1-2]
[Chemical Formula 5]
[Chemical Formula 4]
In the above Formulas 1-2, 4 and 5, R 1 and R 2 are each independently (C 5 -C 50) alkyl or (C 6 -C 50) aryl (C 5 -C 50) alkyl; X is I, Br or Cl; And n is an integer from 2 to 50;
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JP2005272407A (en) | 2004-03-26 | 2005-10-06 | Shin Etsu Chem Co Ltd | New aliphatic halogen compound and method for producing the same |
CN101948368A (en) | 2010-08-20 | 2011-01-19 | 中国科学院上海有机化学研究所 | Diphenylalkyl halide or diphenyl carboxylic acid and synthesis method thereof |
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CN101948368A (en) | 2010-08-20 | 2011-01-19 | 中国科学院上海有机化学研究所 | Diphenylalkyl halide or diphenyl carboxylic acid and synthesis method thereof |
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