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Multifunctional nano-composite having up-conversion luminescence, oxygen sensing and biological connectivity and preparation method thereof

A nanocomposite material and oxygen sensing technology, which is applied in the field of multifunctional nanocomposite materials and its preparation, can solve problems such as the complexity of the preparation process, and achieve the effect of simple preparation method, low price and high sensitivity

Inactive Publication Date: 2011-01-05
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Description
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Problems solved by technology

[0005] The present invention solves the problem of existing up-conversion luminescent nanocrystals, oxygen sensors based on ruthenium complexes and SiO 2 In the field of biomedicine and biochemistry, it is a single structure and the preparation process is complicated. A multifunctional nanocomposite material with upconversion luminescence, oxygen sensing and bio-connectivity and its preparation method are proposed.

Method used

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  • Multifunctional nano-composite having up-conversion luminescence, oxygen sensing and biological connectivity and preparation method thereof
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  • Multifunctional nano-composite having up-conversion luminescence, oxygen sensing and biological connectivity and preparation method thereof

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specific Embodiment approach 2

[0027] Specific Embodiment 2. A method for preparing a multifunctional nanocomposite material with upconversion luminescence, oxygen sensing and bio-connectivity described in this embodiment, the method is realized by the following steps:

[0028] Step 1, add 40-100mg NaYF 4 :Yb 3+ , Tm 3+ Nanoparticles were ultrasonically dispersed in 80 mL of isopropanol; 40-100 mg of NaYF was obtained 4 :Yb 3+ , Tm 3+ A mixture of nanoparticles and 80 mL of isopropanol;

[0029] Step 2, respectively mix 8.94mL of 28% ammonia water, 7.5mL of water, 1.1-3.3mg of [Ru(phen) 2 phen-Si]Cl 2 Add 0.05-0.2mL of ethyl silicate (TEOS) to the mixture described in step 1;

[0030] Step 3. Put the mixture obtained in step 2 into an ultrasonic equipment for two hours, then add 0.1 mL of 3-aminopropyltriethoxysilane, and then continue to sonicate for one hour; obtain the ultrasonicated mixture;

[0031] Step 4, using a centrifuge to centrifuge the ultrasonicated mixture described in step 3, then ri...

specific Embodiment approach 3

[0033] Embodiment 3. The difference between this embodiment and the preparation method of a multifunctional nanocomposite material with upconversion luminescence, oxygen sensing and bio-connectivity described in Embodiment 2 is that the [Ru(phen) 2 phen-Si]Cl 2 The preparation method of complex is completed by the following steps:

[0034] Step A, Ru(phen) 2 Cl 2 2H 2 O and phen-Si are added in absolute ethanol at a molar ratio of 1: 1.02; obtain a mixed solution of absolute ethanol;

[0035] Step B, reflux the dehydrated ethanol mixed solution obtained in step A for 8 hours under the protection of nitrogen to obtain a dark red transparent solution;

[0036] Step C, using a rotary evaporator to evaporate the absolute ethanol in the red transparent solution obtained in step B to obtain a dark red solid, and then vacuum-dry the dark red solid to obtain Ru(phen) 2 phen-Si]Cl 2 Complex; labeled as sample Ru.

[0037] The time for drying the dark red solid in Step C of this ...

specific Embodiment approach 4

[0038] Embodiment 4. The difference between this embodiment and the preparation method of a multifunctional nanocomposite material with upconversion luminescence, oxygen sensing and bio-connectivity described in Embodiment 2 is that the NaYF 4 :Yb 3+ , Tm 3+ The preparation method of nanoparticles is realized by the following steps:

[0039] Step a, will contain Y(NO 3 ) 3 , Yb(NO 3 ) 3 and Tm(NO 3 ) 3 The aqueous solution of ethylenediaminetetraacetic acid disodium (EDTA) is stirred, obtains white compound; Said Y(NO 3 ) 3 , Yb(NO 3 ) 3 and Tm(NO 3 ) 3 The molar ratio of rare earth ions is 74.7:25:0.3 respectively;

[0040] Step b, adding the aqueous solution of NaF to the white compound obtained in step a and stirring for one hour to obtain a precursor solution; the concentration of the rare earth ion in the precursor solution is 0.04mol / L; the NaF, The molar ratio of the molar sum of EDTA and rare earth ions in step a is 1:1:12 respectively;

[0041] Step c, ...

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Abstract

The invention discloses a multifunctional nano-composite having up-conversion luminescence, oxygen sensing and biological connectivity and a preparation method thereof, in particular relates to a multifunctional nano-composite with a core-shell structure formed by connecting a [Ru(phen)2phen-Si]Cl2 complex with NaYF4:Yb<3+> and Tm<3+> nano-particles by using a SiO2 shell and preparation thereof. The nano-composite and the method solve the problems of the single structure of composites and a complex preparation process in the conventional fields of biomedicine and biochemistry. The composite comprises the [Ru(phen)2phen-Si]Cl2 complex, SiO2, and the NaYF4:Yb<3+> and Tm<3+> nano-particles in a mass ratio of 40-100:1.1-3.3:13.4-53.4. Due to the functions of the multifunctional composite, the application of the multifunctional composite in the fields of the biomedicine, such as biomarkers, oxygen concentration measurement in organisms and the like, is enhanced.

Description

technical field [0001] The invention relates to a multifunctional nanocomposite material with upconversion luminescence, oxygen sensing, and biological connectivity and a preparation method thereof; in particular to a [Ru(phen) 2 phen-Si]Cl 2 Complexes with NaYF 4 :Yb 3+ , Tm 3+ Nanoparticles through SiO 2 Multifunctional nanocomposites with shell-connected core-shell structure and their preparation. Background technique [0002] The design and synthesis of multifunctional nanostructures and nanocomposites have attracted extensive attention in recent years. Compared with single-component materials, nanocomposites provide the possibility of enhancing the function and multifunctionality of materials. Rare earth ions (Ln 3+ , Ln=Er, Tm, Yb) doped upconversion nanocrystals have aroused interest due to their wide range of potential biological applications. Common down-conversion materials such as inorganic phosphors, organic dyes, and semiconductor quantum dots all requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85C09K11/06G01N21/64
Inventor 李斌刘利娜左青卉王樱慧张黎明
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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