Cyclolinear, polycyclic poly- and copolyorganocyclocarbosiloxanes as preceramic templates for oxygen-free silicon carbide ceramics and a method for preparation thereof

FIELD: organosilicon polymers.

SUBSTANCE: novel polycyclic poly- and copolyorganocyclocarbosiloxanes with variable cycle size including structural motif of general formula: , wherein (1) x=3 or 4 and y=1, (2) x=2 and y=2, (3) x=3, and suitable as preceramic templates for manufacturing oxygen-free silicon carbide ceramics are prepared by Würtz reaction in toluene via interaction of chloro-derivatives of organocarbosilanes with metallic sodium in the form of suspension.

EFFECT: enlarged assortment of preceramic templates.

2 cl, 1 tbl, 3 ex

 

The invention relates to the chemistry of macromolecular compounds, specifically new infusible and insoluble polycarbosilanes, namely cyclolinear, polycyclic poly - and sopoliorganotsiklokarbosilany and copolymers with different size loops in the unit of the polymer and different number of links interconnected Si-Si and linear SiCH2Si groups with the General formula:

and the way they are received.

The claimed polymers can most effectively be used as matrices predtermined materials SiC ceramics produced during high-temperature processing in the absence of oxygen with a high content of the coke residue.

These compounds, their properties and the method of obtaining not described in literature.

Known to produce infusible and insoluble of polydimethylsilane based on clear with metallic sodium from the reaction vyurts in an inert environment, which further pyrolysis at 450°in an inert atmosphere forms predetermine material with alternating Si-CH2groups in the polymer chain [S.Yajima, J.Nayashi and M.Omori, Chem. Lett, 1975, p.931; S.Yajima, K. Okamyra and J. Nayashi, Chem. Lett, 1975, p.1209; S.Yajima, Y.Hasegawa, J. Mat. Sci. 1978, v.13, p.2569].

Known polycarbosilane obtained by polymerization disclosure of dichlorodiphenyltrichloroethane education is organochlorosilane [E.A.Volnina, N.V.Kanevskii, L.E.Gusel'nikov in book "Abstracts of lectures and oral contributions of the X-th International Sympos. on organosilicon chemistry", Poznan, Poland, 15 aug. 1993, p.133, 170. Nametkin NS, Vdovin V. M., Greenberg, R.L., Izv. An SSSR, Ser. Chem. 1964, s], in which the silicon atoms with different substituents alternate in circuit with propylene groups.

This solution has a drawback: linear polycarbosilane polymers of General formula-Si(R)-(CH2)n-Si(R)is in the process of heat treatment up to 1000°in an inert environment are deeply destruction and content of pyrolytic residues less than 10%, i.e. a ceramic material are not formed.

Known linear and hyperbranched polycarbosilane with different functional groups at the silicon atom (Cl, H, OR) [I.L.Rushkin, Q.Shen, S.E.Lehman, L.V.Interante, Macromolecules, 1997, v.30, p.3141]. The polymer linear and branched structure obtained by the reaction of Grignard-based CHLOROTETRAFLUOROETHANE with alternating [CH3(Cl)SiCH2] [CH3HSiCH2] [CH3(OR)SiCH2] groups, where R = Me, Et, All, Ph, followed by substitution of chlorine atoms for hydrogen in the presence of LiAlH4other functional groups.

This technical solution has the following disadvantages.

A). The structure of the oligomers and polymers obtained in this way, suggests that during high-temperature processing can be formed ner the regular lattice structure predeterminado material, that adversely affects the mechanical properties of ceramics.

B) an aliphatic (n≥2) and aromatic radicals with the silicon atom increases the formation of gaseous decomposition products and increases the carbon content in ceramics, which reduces the output of the pyrolytic residue, and the increase of carbon content in ceramics reduces the duration of the operation.

Known polycarbosilane and method thereof [H.J. Wu, L.V. Interunte, Chem. Mater, 1989, I, 564] with regular alternation of Si(H)CH2groups in the polymer.

This polycarbosilane is obtained on the basis of digitaldistractions reaction polymerization disclosure salbutamolo cycle in the presence of a platinum catalyst.

The disadvantage of this polymer is the release of hydrogen at temperatures above 450-500°that makes obtaining ceramics according to this method, explosive.

Known to produce branched polydimethylsiloxane [poly-(Me2SiCH2x] on the basis of dimethylcyclobutane the polymerization reaction to the disclosure of the cycle and further metallation reaction [D.Seyferth, H. Land, Organometallics, 1991, 10, R] polycarbosilane by functionalization of polydimethylsilane the metallation reaction of a mixture of n-BuLi/IU3JUICE in tetrahydrofuran, and then the interaction of the metal-containing intermediate product with what organochlorosilane.

The disadvantage of this method is the difficult path to the final product through an intermediate stage in the presence of alkali metals such as potassium and lithium.

A known method of producing polyorganosiloxanes on the basis of linear and cyclic halohydrocarbon [Larkin DU abstract of Diss. academic Art. c.ch.s. M., 2004, "Synthesis difunctional linear and cyclic silanes and polymers based on them".

Cyclopentenyl polyorganosiloxane get interaction difunctional dichloropropionic of geometrically in toluene in the presence of metallic sodium.

The disadvantage of this technical is difunctional monomers, and that polysilane not extremely stable in the presence of oxygen and UV radiation.

This method of obtaining was taken as a prototype.

Object of the present invention to provide a new ticlodipine, polycyclic poly - and sopoliorganotsiklokarbosilany with different size loops in the unit of the polymer and different number of links interconnected Si-Si and linear SiCH2Si groups with the General formula:

and the way they are received.

The inventive polymers and copolymers are matrix for kinnickinnic (SiC) predcor the chemical materials regular structure (polycyclic, parquet and others) with equimolar ratio Si/C and a high content of pyrolytic residue.

The problem is solved by reacting cyclic dichlorodimethyl, trichloromethyl-tetrachlorotetrafluoropropanes and their structural isomers, taken as individual compounds and in the form of a mixture ponomarov with metallic sodium in toluene by reaction vyurts at the boiling temperature of the solvent.

Getting polyorganosiloxanes (solitamente-electroestaticaantiestaticadescarga.html (I) sopolimervinilhloridnye (II) and polytrimethylsilylpropine (III)) was performed on the basis of the corresponding chlorinated disela-, Trikala-tetrachlorosilane and their structural isomers, as individual compounds and mixtures thereof in a ratio by reaction vyurts in toluene at the boiling temperature with sodium metal in suspension within 2-8 hours. The precipitate, insoluble in the usual organic solvents, washed with ethyl alcohol, water, optionally with alcohol, then with hexane and acetone and brought to constant weight in a vacuum.

In the IR spectra of the polymers present in the absorption band (ν, KBr, cm-1): 2952, 2892 (CH3); 1456 (SiCH2Si); 1252 (SiCH3); 1030, 812 and 761 SiCSi.

Properties about is aktov high temperature (up to 1000° (C) processing of the inventive polymers in argon and their spectral characteristics shown in the table.

The following are specific examples of the preparation of the inventive polymers.

Example of getting solicitationiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii(I).

In chetyrehosnuju flask, equipped with a metal stirrer, reflux condenser, thermometer, dropping funnel with a bypass tube and a nozzle for passing argon, fill in 22 ml of toluene and added 1.18 g (0,0514 g-EQ) of metallic sodium was dispersed at a temperature of 110°C. To the resulting suspension type of 3.95 g (0,0214 mole) of a mixture of trichlorotrifluoroethane, tetrachlorodifluoroethane in a mixture of 1-chloromethyl-1-chloro-1-methyl-1-seemeilen-3,5,7-trichloro-3,5,7-trimethyl-3,5,7-disilacyclobutane 1 in the ratio of 77:16:7 weight percent in 13 ml of toluene. Duration of response was 4 hours. Upon completion of the reaction, to the reaction mixture is poured ethyl alcohol. The precipitate is filtered off, washed with water, again with alcohol, then with hexane and acetone. Obtained infusible and insoluble in organic solvents, the product is dried in vacuum. The yield of 70.5%.

Elemental analysis. Calculated for C2H5Si1, %: 42,03; N 8,84; Si 49,14. Found: 39,52; N 8,40; Si 43,95; ash 8,13.

In the IR spectra of the polymer has an absorption band (BD; , KBr, cm-1): 2957, 2898 (CH3); 1417,1252 (SiCH3); 1353 (SiCH2Si); 1040, 796 (SiCSi).

An example of retrieving sopolimervinilhloridnye (II).

In chetyrehosnuju flask, equipped with a metal stirrer, reflux condenser, thermometer, dropping funnel with a bypass tube and a nozzle for passing argon, fill in 13 ml of toluene and 0.7 g (0,0305 g-EQ) of metallic sodium was dispersed at a temperature of 110°C. To the resulting suspension was added dropwise 0.9 g (0,0044 mole) of a mixture of dichlorodiphenyldichloroethane and 1-chloromethyl-1,3-dichloro-1,3-dimethyl-1,3-dissaproved (structural isomer in a ratio of 3:1 in 3 ml of toluene. Duration of response of 6 hours. Upon completion of the reaction, add ethyl alcohol. The precipitate dark gray color filtered off, washed with water, optionally with alcohol, then with hexane and acetone. Obtained infusible and insoluble in organic solvents the product gray dried in vacuum. The output of 55.2%.

Elemental analysis. Calculated for C2H5Si1, %: 42,03; N 8,84; Si 49,14. Found: 39,44; N to 8.41; Si 43,80; ash 8,35.

In the IR spectra of the polymer has an absorption band (v, KBr, cm-1): 2957, 2898 (CH3); 1407,1251 (SiCH3); 1353 (SiC2Si); 1045, 796 (SiCSi). Example polytrimethylsilylpropine (III).

In chetyrehosnuju flask, equipped with a metal stirrer, back hall is dildocam, thermometer, dropping funnel with a bypass tube and a nozzle for passing argon, pour 35 ml of toluene and 1.9 g (0,0826 g-EQ) of metallic sodium was dispersed at a temperature of 110°C. To the resulting suspension was pricipal of 4.2 g (0,0454 mole) of trichlorotrifluoroethane in 7 ml of toluene. Duration of response of 6 hours. Then to the reaction mixture was added 0.5 g (0,0132 mole) LiAlH4. Kept for three days at room temperature. The reaction mixture was treated with ethyl alcohol. The precipitate dark gray color was filtered, washed with water, again with alcohol, then with hexane and acetone. Obtained infusible and insoluble in organic solvents, the white product was dried in vacuum. Output 66,0%.

Elemental analysis. Calculated for C2H5Si1, %: 42,03; N 8,84; Si 49,14. Found: 39,36; N 8,40; Si 43,80; ash 8,35.

In the IR spectra of the polymer has an absorption band (ν, KBr, cm-1): 2952, 2892 (CH3); 2104(SiH); 1252 (SiCH3); 1353 (SiCH2Si); 1030, 812 and 761 (SiCSi).

TABLE
SPECTRAL HARAKTERISTIKI AND PRODUCT PROPERTIES high TEMPERATURE PROCESSING PREDTERMINED POLYMERS
ExampleThe IR spectrum. ν, KBr, cm-1Dynamic heating at V=10 deg/min
ArThe airNoThe air
Pyrolytic residue, %Weight loss, %
I1031,816to 83.588,9--
II1016,80880,094,034,223,3
III992,78984,9for 95.219,2-

The use of the inventive polymers as matrices predtermined materials allows to obtain high-temperature SiC ceramics with a high yield of pyrolytic residue (up to 85%) in oxygen-free environment and up to 95% on air. Significant difference between the claimed invention is that polymers are formed with:

1) high frequency structure - cyclopentane, polycyclic or mixed (the presence of loops of different sizes - disreputable, trisilicate, tersilochinae, interconnected siljanoski and kilometresaway communication). This factor is significant when high-temperature processing, especially in the absence of oxygen, as it is possible, by setting a certain part of the original polymer, denied the Xia regular mesh structure (type parquet) with a given structure of the SiC ceramic material;

2) the possibility of obtaining SiC predeterminado material with equimolar ratio Si/C, close to quantitative and high yield of the coke residue, which allows to obtain ceramics with high mechanical strength, capable of a long time to work at temperatures above 1000°C.

1. Cyclopentane, polycyclic poly - and sopoliorganotsiklokarbosilany comprising a structural unit of General formula

as predeterminat matrix to obtain oxygen-free kremniikarbidnoi ceramics.

2. A method of producing polymers according to claim 1, which consists in the fact that they are carrying out the reaction vyurts in toluene at the boiling temperature of 100-110°C for 4-8 h, the interaction of chlorinated organoboranes with metallic sodium in the form of a suspension, as of chlorinated organoalkoxysilanes use dichlordiphenyltrichlorethan and its structural isomer of 1-chloromethyl-1,3-dichloro-1,3-dimethyl-1,3-dissaproved, 1,3,5-trichloro-1,3,5-trimethylcyclohexane, 1,3,5,7-tetrachloro-1,3,5,7-tetramethylcyclotetrasiloxane and its structural isomer of 1-chloromethyl-1-chloro-1-methyl-1-seemeilen-3,5,7-trichloro-3,5,7-trimethyl-3,5,7-disilacyclobutane, followed by processing in a known manner and the selection of the corresponding finished product.



 

Same patents:

FIELD: organosilicon polymers.

SUBSTANCE: polydimethylsilane is obtained by reaction of dimethyldichlorosilane with sodium at 150-170°C followed by decomposition of unreacted sodium with methyl alcohol, isolation of desired polymer, washing on filter with distilled water, drying on air and the in vacuum. Process is characterized by that sodium reagent is added as deposited on water-soluble solid, incombustible, inorganic substrate.

EFFECT: reduced fire risk of synthesis process and labor intensity of polymer isolation stage.

2 dwg, 1 tbl, 5 ex

FIELD: chemical technology.

SUBSTANCE: invention describes a method for preparing metallopolycarbosilanes. Method involves interaction of polycarbosilanes with molecular mass above 200 Da and with the main chain consisting of links of the formula: [-(R)2Si-CH2-] wherein R means hydrogen atom (H), (C1-C4)-alkyl or phenyl groups with metalloorganic compounds of the formula MXz wherein M means transient metal of III-VIII group of Periodic system; z = 2-4; X means NR12 wherein R1 means (C1-C4)-alkyl group in organic solvent medium at temperatures from 20°C to 400°C under pressure from 5.05 MPa to 0.2 kPA. Method provides preparing fusible soluble polymers with homogeneous distribution of chemically bound metal atoms that elicit high capacity for fiber- and film-formation from solutions or melts that are hardened in thermochemical treatment and provides high yield of ceramic residue in pyrolysis (up to 85 wt.-%).

EFFECT: improved preparing method.

1 tbl, 9 ex

The invention relates to methods of modifying polydimethylsiloxane rubber, not having in its composition of active groups, UV light and can be used to obtain a new silicon-containing polymers with a wide range of applications, including

The invention relates to a method for SiOH-functional dendrimeric of carbosilane

The invention relates to a method of obtaining new undescribed in the literature polylithium derivatives karbosilanovykh compounds (PLCS), which can find application in the chemical industry as intermediates for various materials organiseorganised

The invention relates to methods of producing organosilicon polymer of polymer of the formula:

< / BR>
(patent N 4220600, CL

FIELD: chemical technology.

SUBSTANCE: invention describes a method for preparing metallopolycarbosilanes. Method involves interaction of polycarbosilanes with molecular mass above 200 Da and with the main chain consisting of links of the formula: [-(R)2Si-CH2-] wherein R means hydrogen atom (H), (C1-C4)-alkyl or phenyl groups with metalloorganic compounds of the formula MXz wherein M means transient metal of III-VIII group of Periodic system; z = 2-4; X means NR12 wherein R1 means (C1-C4)-alkyl group in organic solvent medium at temperatures from 20°C to 400°C under pressure from 5.05 MPa to 0.2 kPA. Method provides preparing fusible soluble polymers with homogeneous distribution of chemically bound metal atoms that elicit high capacity for fiber- and film-formation from solutions or melts that are hardened in thermochemical treatment and provides high yield of ceramic residue in pyrolysis (up to 85 wt.-%).

EFFECT: improved preparing method.

1 tbl, 9 ex

FIELD: organosilicon polymers.

SUBSTANCE: polydimethylsilane is obtained by reaction of dimethyldichlorosilane with sodium at 150-170°C followed by decomposition of unreacted sodium with methyl alcohol, isolation of desired polymer, washing on filter with distilled water, drying on air and the in vacuum. Process is characterized by that sodium reagent is added as deposited on water-soluble solid, incombustible, inorganic substrate.

EFFECT: reduced fire risk of synthesis process and labor intensity of polymer isolation stage.

2 dwg, 1 tbl, 5 ex

FIELD: organosilicon polymers.

SUBSTANCE: novel polycyclic poly- and copolyorganocyclocarbosiloxanes with variable cycle size including structural motif of general formula: , wherein (1) x=3 or 4 and y=1, (2) x=2 and y=2, (3) x=3, and suitable as preceramic templates for manufacturing oxygen-free silicon carbide ceramics are prepared by Würtz reaction in toluene via interaction of chloro-derivatives of organocarbosilanes with metallic sodium in the form of suspension.

EFFECT: enlarged assortment of preceramic templates.

2 cl, 1 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to field of chemical technology of silicon-organic compounds. Technical task lies in synthesis of novel polyarylsilane links including dendrimers of large generations suitable for application as luminescent materials for organic electronics and photonics. Claimed are dendrimers of general formula (I) where R1 stands for substituent from group: linear or branched C1-C20alkyl groups; linear or branched C1-C20alkyl groups separated by at least one oxygen atom; linear or branched C1-C20 alkyl groups separated by at least one sulphur atom; branched C3-C20 alkyl groups separated by at least one silicon atom; C2-C20alkenyl groups; Ar represents, independently for each n and m, similar or different arylene radicals, selected from group: substituted or non-substituted thienyl-2,5-diyl of general formula (II-a) substituted or non-substituted phenyl-1,4-diyl of general formula (II-b) substituted or non-substituted 1,3-oxazol-2,5-diyl of general formula (II-c) substituted fluorene-4,4'-diyl of general formula (II-d) where R2, R3, R4, R5, R6 represent independently on each other H or said above for R1; R7 stands for said above for R1; K is equal 2 or 3 or 4; L is equal 1 or 3 or 7 or 15; m and n represent whole numbers from series from 2 to 6. Method of obtaining dendrimers lies in the following: monodendron of general formula (III) where X represents H or Br or I, first reacts with lithiumising agent of general formula R8Li, where R8 represents linear or branched C1-C10alkyl group, dialkylamide or phenyl group; then obtained compound reacts with functional compound selected from group of compounds of formula (CH3)4-KSiYK, where Y represents Cl, or Br, or -OCH3, or -OC2H5, or -OC3H7, or -OC4H9. Claimed method is technological, use of expensive catalysts is not required.

EFFECT: elaboration of technological method of synthesising novel polyarylsilane dendrimers which does not require use of expensive catalysts.

24 cl, 12 dwg, 1 tbl, 13 ex

FIELD: chemistry.

SUBSTANCE: invention relates to novel branched oligoarylsilanes and their synthesis method. The engineering problem is obtaining branched oligoarylsilanes which contain not less than 5 functional arylsilane links and have a set of properties which enable their use as luminescent materials. The disclosed branched oligoarylsilanes have general formula where R denotes a substitute from: straight or branched C1-C20 alkyl groups; straight or branched C1-C20 alkyl groups separated by at least one oxygen atom; straight or branched C1-C20 alkyl groups separated by at least one sulphur atom; branched C3-C20 alkyl groups separated by at least one silicon atom; C2-C20 alkenyl groups; Ar denotes identical or different arylene or heteroarylene radicals selected from: substituted or unsubstituted thienyl-2,5-diyl, substituted or unsubstituted phenyl-1,4-diyl, substituted or unsubstituted 1,3-oxazole-2,5-diyl, substituted fluorene-4,4'-diyl, substituted cyclopentadithiophene-2,7-diyl; Q is a radical selected from the same group as Ar; X is at least one radical selected from the same group as Ar and/or a radical selected from: 2,1,3-benzothiodiazole-4,7-diyl, anthracene-9,10-diyl, 1,3,4-oxadiazole-2,5-diyl, 1-phenyl-2-pyrazoline-3,5-diyl, perylene-3,10-diyl; L equals 1 or 3 or 7 and preferably 1 or 3; n is an integer from 2 to 4; m is an integer from 1 to 3; k is an integer from 1 to 3. The method of obtaining branched oligoarylsilanes involves reaction of a compound of formula where Y is a boric acid residue or its ester or Br or I, under Suzuki reaction conditions with a reagent of formula (IV) A - Xm - A (IV), where A denotes: Br or I, provided that Y denotes a boric acid residue or its ester; or a boric acid residue or its ester, provided that Y denotes Br or I.

EFFECT: obtaining novel compounds distinguished by high luminescence efficiency, efficient intramolecular transfer of energy between molecule fragments and high thermal stability.

24 cl, 12 dwg, 1 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: invention relates to macromolecular compounds with a nucleus-shell structure. The invention discloses macromolecular compounds with a nucleus-shell structure, whereby the nucleus has a macromolecular dendritic and hyperbranched structure based on carbon or based on silicon and carbon is bonded to at least three, in particular at least six external atoms through a carbon-based coupling chain (V) which is selected from a group consisting of straight and branched alkylene chains with 2-20 carbon atoms, straight or branched polyoxyalkylene chains, straight or branched siloxane chains or straight or branched carbosilane chains, with straight chains based on carbon oligomeric chains (L) with conjugated double bonds on the entire length. Conjugated chains (L) in each separate case are bonded at the end opposite the coupling chain (V) to one more, specifically, aliphatic, arylaliphatic or oxyaliphatic chain (R) without conjugated double bonds. The chains (V), (L) and (R) form the shell. The invention also discloses a method for synthesis of the said compounds.

EFFECT: novel organic compounds which can be synthesised using conventional solvents and have good semiconductor properties.

16 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to methods of producing polycarbosilanes. Disclosed is a method of producing polycarbosilane via thermal decomposition of polydimethylsilane in the presence of zirconium tetrachloride in an inert atmosphere at excess pressure of 0.4-0.5 MPa in three steps: holding at 350-380C for 2-10 hours, releasing low-boiling point components and then holding at 350-420C for 20-30 hours.

EFFECT: method of producing polycarbosilane which enables to cut time and lower temperature of the process.

1 cl, 1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to chemical engineering of organosilicon compounds. Disclosed are novel dendronised polyarylsilanes of general formula

, where R denotes a substitute from: linear C1-C12 or branched C3-C20 alkyl groups; linear C1-C12 or branched C3-C20 alkyl groups, separated by at least one oxygen atom; linear C1-C12 or branched C3-C20 alkyl groups, separated by at least one sulphur atom; branched C3-C20 alkyl groups, separated by at least one silicon atom; C2-C20 alkenyl groups; Ar denotes identical or different arylene or heteroarylene radicals selected from: substituted or unsubstituted thienyl-2,5-diiyl; substitured or unsubstituted phenyl-1,4-diiyl, substituted fluorene-4,4'-diiyl. X denotes identical or different arylene or heteroarylene radicals selected from said group for Ar and/or a radical from 2,1,3-benzothiodiazole-4,7-diiyl, anthracene-9,10-diiyl; L equals 0 or a an integer from 1, 3, 7, 15; k is an integer from 1 to 6; m is an integer from 1 to 6; t is an integer from 2 to 10; n is an integer from 5 to 10000. A method of producing said compounds is also disclosed.

EFFECT: synthesis of novel chemical compounds, characterised by high efficiency of luminescence, high molar absorption coefficient and high thermal stability.

FIELD: physics.

SUBSTANCE: invention relates to organic light-emitting diode (OLED) solid-state light sources used to make colour information screens and colour display devices with high consumer properties, as well as cheap and efficient light sources. Disclosed is an OLED, having a base in form of a transparent substrate having a transparent anode layer and a metal cathode layer with a light-emitting layer in between, which is based on a dendronised polyaryl silane of general formula (I) or (II) , where n is an integer from 5 to 1000.

EFFECT: wide range of OLEDs with high operational characteristics, particularly in the radiation range of 400-700 nm, which enables use thereof as light sources.

7 cl, 3 dwg, 6 ex

FIELD: chemistry.

SUBSTANCE: disclosed are novel branched oligoarylsilanes of general formula (I) , where R denotes a substitute selected from: linear or branched C1-C20 alkyl groups; including separated by at least one oxygen or sulphur atom; branched C3-C20 alkyl groups, separated by at least one silicon atom; C2-C20 alkenyl groups; Ar denotes identical or different arylene or heteroarylene radicals selected from: substituted or unsubstituted thienyl-2,5-diiyl, substituted or unsubstituted phenyl-1,4-diiyl, substituted or unsubstituted 1,3-oxazole-2,5-diiyl, substituted fluorene-4,4'-diiyl, substituted cyclopentadithiophene-2,7-diiyl; Q denotes a radical selected from the series for Ar; X denotes at least one radical selected from the series for Ar and/or a radical selected from: 2,1,3-benzothiiodiazole-4,7-diiyl, anthracene-9,10-diiyl, 1,3,4-oxadiazole-2,5-diiyl, 1-phenyl-2-pyrazoline-3,5-diiyl, perylene-3,10-diiyl; n is an integer from 2 to 4; m is an integer from 1 to 3; k is an integer from 1 to 3. Also disclosed is a method of producing said compounds.

EFFECT: obtaining novel compounds characterised by high luminescence efficiency, efficient intramolecular energy transfer from some molecule fragments to others and high thermal stability.

20 cl, 5 dwg, 1 tbl, 15 ex

Up!