CN113150035B - Linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex and preparation method and application thereof - Google Patents
Linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex and preparation method and application thereof Download PDFInfo
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- 239000012327 Ruthenium complex Substances 0.000 title claims abstract description 41
- 229910019854 Ru—N Inorganic materials 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 125000005259 triarylamine group Chemical group 0.000 claims abstract description 43
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 claims abstract description 16
- 229910052707 ruthenium Inorganic materials 0.000 claims abstract description 15
- 239000011698 potassium fluoride Substances 0.000 claims abstract description 8
- 235000003270 potassium fluoride Nutrition 0.000 claims abstract description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 45
- JFJNVIPVOCESGZ-UHFFFAOYSA-N 2,3-dipyridin-2-ylpyridine Chemical compound N1=CC=CC=C1C1=CC=CN=C1C1=CC=CC=N1 JFJNVIPVOCESGZ-UHFFFAOYSA-N 0.000 claims description 15
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 12
- -1 trimethylsilylethynyl Chemical group 0.000 claims description 11
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 150000003303 ruthenium Chemical class 0.000 claims description 9
- 125000001424 substituent group Chemical group 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000002070 nanowire Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 6
- WIWBLJMBLGWSIN-UHFFFAOYSA-L dichlorotris(triphenylphosphine)ruthenium(ii) Chemical class [Cl-].[Cl-].[Ru+2].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 WIWBLJMBLGWSIN-UHFFFAOYSA-L 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 abstract description 11
- 238000002848 electrochemical method Methods 0.000 abstract description 4
- 230000003993 interaction Effects 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 4
- CWMFRHBXRUITQE-UHFFFAOYSA-N trimethylsilylacetylene Chemical group C[Si](C)(C)C#C CWMFRHBXRUITQE-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000013459 approach Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- SUCQPHMWFOCTTR-UHFFFAOYSA-L dichlororuthenium;triphenylphosphane Chemical compound Cl[Ru]Cl.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 SUCQPHMWFOCTTR-UHFFFAOYSA-L 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 13
- 238000005481 NMR spectroscopy Methods 0.000 description 11
- 150000001875 compounds Chemical class 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000002484 cyclic voltammetry Methods 0.000 description 2
- 238000000921 elemental analysis Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 150000001345 alkine derivatives Chemical group 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000006298 dechlorination reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910021397 glassy carbon Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004365 square wave voltammetry Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000007039 two-step reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
- C07F15/0046—Ruthenium compounds
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Abstract
A linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex and a preparation method and application thereof relate to the technical field of molecular leads, triarylamine substituted terpyridyl are used as raw materials and then coordinated with triphenylphosphine ruthenium dichloride to obtain the triarylamine substituted terpyridyl ruthenium complex, and finally the triarylamine substituted terpyridyl ruthenium complex and the triarylamine substituted by trimethylsilylacetylene are directly used for obtaining the linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex under the action of potassium fluoride, so that a linear molecular lead model with longer distance is synthesized, and electrochemical method tests show that the linear molecular lead model has stronger electronic interaction between two terminal groups of the triarylamine connected by intermediate metal ruthenium. Thus, the synthetic design provides a new approach to building molecular wires with longer distances and with remote charge transport properties.
Description
Technical Field
The invention relates to the technical field of molecular leads, in particular to a linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex and a preparation method and application thereof.
Background
Transition metal ruthenium or organic triarylamine is used as a redox active end group to construct a symmetrical double redox active center compound, and the compound is widely used as a molecular wire model to research the electron transmission performance of a molecular wire. Terpyridine is used as an important ligand for synthesizing metal complexes, has good coordination capacity and stability, and is widely used for constructing terpyridine monometal complexes or cyclometalated complexes. Recent evidence shows that the single terpyridyl ruthenium complex has the characteristics of good electrochemical reversibility, capability of further modification and the like, is also applied to the research in the field of molecular leads (Inorg. Chem. 2019, 58, 1155-1166), and provides possibility for constructing a new molecular lead model.
Disclosure of Invention
One of the purposes of the invention is to provide a linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex, wherein strong electronic interaction exists between two triarylamine end groups connected by intermediate transition metal ruthenium, which is beneficial to electronic transmission.
The structural formula of the linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex is shown as a formula (1):
wherein R is H or Me (CH) 3 ) Or OMe (OCH) 3 )。
The second purpose of the invention is to provide a method for preparing the linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex, and a linear molecular lead model with longer distance is synthesized.
In order to achieve the purpose, the invention adopts the following technical scheme: a preparation method of a linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex comprises the following steps:
1) Preparing a triarylamine substituted terpyridyl ruthenium complex;
2) Sequentially adding trimethylsilylethynyl substituted triarylamine, triarylamine substituted terpyridyl ruthenium derivatives containing different substituents, potassium fluoride, tetrahydrofuran and methanol into a reaction container, reacting for 12-24 hours under stirring and refluxing, cooling, separating out a reddish brown solid, and directly performing suction filtration to obtain the reddish brown solid, namely the linear asymmetric N-Ru-N trioxygenation center terpyridyl ruthenium complex.
Wherein, the mass ratio of the triarylamine substituted terpyridyl ruthenium derivative containing different substituents to the trimethylsilylethynyl substituted triarylamine and potassium fluoride is 1: (2-3): (4-6).
Wherein each millimole of triarylamine substituted ruthenium terpyridyl derivative containing different substituents corresponds to about 80-100mL of tetrahydrofuran.
Wherein each millimole of triarylamine substituted ruthenium terpyridyl derivative containing different substituents corresponds to about 320-360mL of methanol.
The preparation method of the triarylamine substituted terpyridyl ruthenium complex comprises the following steps: sequentially adding triarylamine substituted terpyridine, tris (triphenylphosphine) ruthenium dichloride and methanol into a reaction vessel, reacting for 24-36 hours under stirring and refluxing, cooling to room temperature, concentrating a reaction system solvent, adding sodium hexafluorophosphate into the reaction system solvent to precipitate a solid, and recrystallizing by using dichloromethane/methanol to obtain the triarylamine substituted terpyridine ruthenium complex.
Wherein the mass ratio of the triarylamine-substituted terpyridine to the tris (triphenylphosphine) ruthenium dichloride and sodium hexafluorophosphate is 1: (1-1.1): (15-20).
Wherein each millimole of triarylamine substituted terpyridine corresponds to about 150-200mL of methanol.
In addition, the invention also relates to the application of the linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex in a molecular wire.
The invention firstly uses triarylamine substituted terpyridine as raw material, then coordinates it with triphenylphosphine ruthenium dichloride to obtain triarylamine substituted terpyridyl ruthenium complex, finally, under the action of potassium fluoride the triarylamine substituted terpyridyl ruthenium complex and trimethylsilylacetylene substituted terpyridyl ruthenium complex can be directly obtained into linear asymmetric N-Ru-N trioxidation reduction central terpyridyl ruthenium complex, so that a linear molecular wire model with longer distance can be synthesized, and the electrochemical method test shows that two triarylamine end groups connected by intermediate metal ruthenium have stronger electronic interaction. Thus, the synthetic design provides a new approach to building molecular wires with longer distances and with remote charge transport properties.
Drawings
FIG. 1 is a NMR phosphorus spectrum of a linear asymmetric N-Ru-N redox center terpyridine ruthenium complex (R = OMe) (II-3).
FIG. 2 shows the NMR spectrum of a linear asymmetric N-Ru-N redox centre ruthenium terpyridyl complex (R = OMe) (II-3).
FIG. 3 is a NMR carbon spectrum of a linear asymmetric N-Ru-N redox centre ruthenium terpyridyl complex (R = OMe) (II-3).
Detailed Description
For the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. It should be noted that the following examples are carried out in the laboratory, and it should be understood by those skilled in the art that the amounts of the components given in the examples are merely representative of the proportioning relationship between the components, and are not specifically limited.
1. Preparation of linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex
The compound is synthesized by a continuous two-step reaction, and the reaction equation is as follows:
wherein R is H or Me (CH) 3 ) Or OMe (OCH) 3 )。
The method comprises the following specific steps:
step I: a triarylamine substituted terpyridyl ruthenium complex (R = OMe) was prepared.
Adding 0.134g (0.25 mmol) of triarylamine substituted terpyridine, 0.240g (0.25 mmol) of tris (triphenylphosphine) ruthenium dichloride and 40mL of methanol into a round-bottom flask in sequence, stirring, heating and refluxing the mixed system for 24h under the protection of inert gas, cooling to room temperature, concentrating a reaction system solvent by using a rotary evaporator under the pressure of 0.005-0.01Kpa and the temperature of 40-45 ℃, adding 0.672g (4.00 mmol) of sodium hexafluorophosphate into the system, separating out a solid, and then recrystallizing by using dichloromethane/methanol to obtain a red brown pure product 234mg, namely the triarylamine substituted terpyridyl ruthenium complex (R = OMe), wherein the yield is 67%. Wherein, methanol is a solvent required by the reaction.
The structural formula of the triarylamine substituted terpyridyl ruthenium complex (R = OMe) is shown in a formula I-3:
elemental analysis (C) 74 H 66 ClF 6 N 4 O 2 P 3 Ru）：
Theoretical value: c,64.09; h,4.80. Measurement value: c,64.11; h,4.75.
1 H NMR (500 MHz, CDCl 3 ): δ 3.84 (s, 6H, -OCH 3 ), 6.92 (d, J(HH) = 10.0 Hz, 4H), 7.04-7.07 (m, 16H), 7.17-7.20 (m, 22H), 7.47 (d, J(HH) = 10.0 Hz, 2H), 7.53 (s, 2H), 7.70 (t, J(HH) = 10.0 Hz, 2H), 7.85 (d, J(HH) = 10.0 Hz, 2H), 9.01 (d, J(HH) = 5.0 Hz, 2H).
13 C NMR (125 MHz, CDCl 3 ): δ 55.53 (-OCH 3 ), 115.00, 119.41, 122.43, 126.04, 128.11, 128.15128.18, 129.63, 130.08, 130.23, 132.90, 132.94, 132.98, 136.54, 155.32, 156.79, 158.14.
31 P NMR (200 MHz, CDCl 3 ): δ 20.01 (s, PPh 3 ), −144.13 (septet, PF 6 ).
From the above data, the structures of the prepared compounds were correct.
Step II: a linear asymmetric N-Ru-N redox centre ruthenium terpyridyl complex (R = OMe) was prepared.
Sequentially adding 0.047g (0.12 mmol) of trimethylsilylethynyl substituted triarylamine, 0.080g (0.058 mmol) of methoxy-containing triarylamine substituted terpyridyl ruthenium, 0.017g (0.29 mmol) of potassium fluoride, 5mL of tetrahydrofuran and 20mL of methanol into a round-bottom flask, heating and refluxing the mixed system for 24h under the protection of inert gas and stirring, cooling, directly precipitating a reddish brown solid, and performing suction filtration to obtain 65mg of a product, wherein the yield is 67%. The trimethyl silylethynyl substituted triarylamine and the triarylamine substituted terpyridyl ruthenium derivative containing different substituent groups are reactants, tetrahydrofuran and methanol are solvents required by the reaction, and potassium fluoride plays two roles: one of them is used for removing (trimethylsilylacetylene) TMS; the second one is used as dechlorination reagent and is favorable to the coordination of terminal alkyne and metal ruthenium.
The structural formula of the linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex (R = OMe) is shown as a formula II-3:
elemental analysis (C) 96 H 84 F 6 N 5 O 4 P 3 ）：
Theoretical value: c,68.64; h,5.04. Measurement value: c,68.70; h,5.01.
1 H NMR (500 MHz, CDCl 3 ): δ 3.81 (s, 6H, -OCH 3 ), 3.83 (s, 6H, -OCH 3 ), 6.84-6.92 (m, 12H), 7.03-7.11 (m, 20H, Ph), 7.14-7.19 (m, 10H, Ph), 7.37-7.40 (m, 12H), 7.50 (d, J(HH) = 10.0 Hz, 2H, Py), 7.60-7.62 (m, 4H, Py), 7.80 (d, J(HH) = 10.0 Hz, 2H, Py), 8.85 (d, J(HH) = 10.0 Hz, 2H, Py).
13 C NMR (125 MHz, CDCl 3 ): δ 55.55 (-OCH 3 ), 55.56 (-OCH 3 ), 114.66, 115.04, 119.06, 119.46, 121.36, 122.40, 125.75, 126.18, 127.49, 128.05, 128.08, 128.12, 129.42, 130.55, 130.93, 131.08, 132.86, 132.90, 132.94, 136.11, 139.91, 141.37, 145.35, 146.62, 150.52, 154.71, 155.59, 156.69, 156.75, 158.04.
31 P NMR (200 MHz, CDCl 3 ): δ 27.70 (s, PPh 3 ), −144.13 (septet, PF 6 ).
From the above data, the structures of the prepared compounds were correct.
Wherein, the attached figures 1-3 respectively show nuclear magnetic resonance phosphorus spectrogram, nuclear magnetic resonance hydrogen spectrogram and nuclear magnetic resonance carbon spectrogram of the linear asymmetric N-Ru-N redox center ruthenium terpyridyl complex (R = OMe) (II-3).
2. Electrochemical performance test
The measuring method comprises the following steps: electrochemical measurements were carried out using electrochemical workstation CHI 660C (CH Instruments Company, USA). Wherein, a glassy carbon electrode is used as a working electrode, a platinum electrode is used as a counter electrode, and Ag is used + The | Ag electrode is a reference electrode; 0.001mol of 8729L -1 n-Bu 4 NPF 6 C of (A)H 2 Cl 2 The solution is electrolyte, the concentration of the measured substrate is 0.001mol 8729L -1 . Cyclic voltammetry is usually performed at a scan rate of 100mV 8729s -1 Measured as square wave volt-amperef Measured under the condition of 10 Hz.
Data processing: the data were processed into pictures by OriginPro 8.0.
Cyclic voltammetry and square wave voltammetry tests are carried out on the linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex (R = OMe) (II-3) of the embodiment by an electrochemical method, and the potential difference (delta) of two times of redox is obtainedE) And equilibrium constantK c The values, corresponding results are shown in table 1.
TABLE 1
| Compound (I) | E 1/2 (1)(V) | E 1/2 (2) (V) | ΔE (mV) b | K c c |
| II-3 | 0.98 | 1.16 | 180 | 1.00 × 10 3 |
Wherein, deltaE = E 1/2 (2) – E 1/2 (1)，K c = exp(ΔE/25.69) (298 K)。
The comprehensive analysis of the test results shows that strong electronic interaction exists between the two triarylamine end groups connected by the intermediate transition metal ruthenium, which indicates that the linear compounds are beneficial to the transmission of electrons, so that a long-distance molecular wire with longer long-distance charge transmission performance is expected to be designed.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Finally, it should be emphasized that some of the descriptions of the present invention have been simplified to facilitate the understanding of the improvements of the present invention over the prior art by those of ordinary skill in the art, and that other elements have been omitted from this document for the sake of clarity, and those skilled in the art will recognize that these omitted elements may also constitute the content of the present invention.
Claims (9)
1. The linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex is characterized in that: the structural formula is shown as a formula (1),
wherein R is H or Me (CH) 3 ) Or OMe (OCH) 3 )。
2. A process for preparing a linear asymmetric N-Ru-N redox centre terpyridine ruthenium complex as claimed in claim 1, comprising the steps of:
1) Preparation of triarylamine substitutedThe terpyridyl ruthenium complex has a structural formula as follows:
；
2) Sequentially adding trimethylsilylethynyl substituted triarylamine, triarylamine substituted terpyridyl ruthenium derivatives containing different substituents, potassium fluoride, tetrahydrofuran and methanol into a reaction container, reacting for 12-24 hours under stirring and refluxing, cooling, separating out a reddish brown solid, and directly performing suction filtration to obtain the reddish brown solid, namely the linear asymmetric N-Ru-N trioxygenation center terpyridyl ruthenium complex.
3. The method for preparing a linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex according to claim 2, which is characterized in that: in the step 2), the ratio of the amounts of the triarylamine substituted terpyridyl ruthenium derivative containing different substituents to the trimethylsilylethynyl substituted triarylamine and potassium fluoride is 1: (2-3): (4-6).
4. The method for preparing a linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex according to claim 2, which is characterized in that: in step 2), each millimole of triarylamine substituted ruthenium terpyridyl derivative containing different substituents corresponds to about 80-100mL of tetrahydrofuran.
5. The method for preparing a linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex according to claim 2, which comprises the following steps: in step 2), each millimole of triarylamine substituted ruthenium terpyridyl derivative containing different substituents corresponds to about 320-360mL of methanol.
6. The method for preparing a linear asymmetric N-Ru-N redox centre terpyridyl ruthenium complex according to claim 2, wherein in step 1), the preparation of a triarylamine substituted terpyridyl ruthenium complex comprises the following steps:
sequentially adding triarylamine substituted terpyridine, tris (triphenylphosphine) ruthenium dichloride and methanol into a reaction vessel, reacting for 24-36 hours under stirring and refluxing, cooling to room temperature, concentrating a reaction system solvent, adding sodium hexafluorophosphate into the reaction system solvent to precipitate a solid, and recrystallizing by using dichloromethane/methanol to obtain the triarylamine substituted terpyridine ruthenium complex.
7. The method for preparing a linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex according to claim 6, which comprises the following steps: the mass ratio of the triarylamine substituted terpyridine to the tris (triphenylphosphine) ruthenium dichloride and sodium hexafluorophosphate is 1: (1-1.1): (15-20).
8. The method for preparing a linear asymmetric N-Ru-N redox center terpyridyl ruthenium complex according to claim 6, which comprises the following steps: approximately 150-200mL of methanol per millimole of triarylamine substituted terpyridine.
9. The use of a linear asymmetric N-Ru-N redox centre terpyridine ruthenium complex as claimed in claim 1 in molecular wire.
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