Modified gold nanorod @ gadolinium oxysulfide (Gd2O2S) and preparation method thereof
A gold nanorod, modified technology, applied in nanotechnology, nanotechnology, metal processing equipment and other directions, can solve the problems of easy thermal deformation, cytotoxicity, reduced aspect ratio, etc., to improve photothermal stability, The effect of reducing biological toxicity and simple preparation method
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Embodiment 1
[0031] Preparation of modified GNRs@Gd with a shell thickness of 4 nm 2 o 2 S, including the following steps:
[0032] 1) Preparation of seed crystal solution: mix 0.01 M, 0.25 mL HAuCl 4 Add to the 0.1 M, 9.75 mL CTAB solution and stir with freshly prepared ice-cold 0.01 M, 0.6 mL NaBH 4 The solution was added to the mixture solution, stirring was continued for 2 minutes, and then it was left to stand at room temperature for 2 h;
[0033] 2) Preparation of growth solution: mix 0.01 M, 2 mL HAuCl 4 with 0.01 M, 0.35 mL AgNO 3 Incubate with 0.1 M, 40 mL CTAB solution, then add 0.1 M, 0.32 mL AA;
[0034] 3) Preparation of gold nanorods: Inject 25 μL of the seed solution into the growth solution, mix the solution gently for 30 seconds, and let stand at 28 °C for 6 hours to obtain the desired GNRs;
[0035] 4) Preparation of modified GNRs@Gd 2 o 2 S: Mix 10 mL of uncentrifuged GNRs prepared in step 3) with 1 mL, 0.1 M hexamethylenetetramine, 0.5 mL, 0.1 M AA and 40 μL, 0....
Embodiment 2
[0037] Preparation of modified GNRs@Gd with 8 nm thick shell 2 o 2 S, including the following steps:
[0038] 1) Preparation of seed crystal solution: mix 0.01 M, 0.25 mL HAuCl 4 Add to the 0.1 M, 9.75 mL CTAB solution and stir with freshly prepared ice-cold 0.01 M, 0.6 mL NaBH 4 The solution was added to the mixture solution, stirring was continued for 2 minutes, and then it was left to stand at room temperature for 2 h;
[0039] 2) Preparation of growth solution: mix 0.01 M, 2 mL HAuCl 4 with 0.01 M, 0.35 mL AgNO 3 Incubate with 0.1 M, 40 mL CTAB solution, then add 0.1 M, 0.32 mL AA;
[0040] 3) Preparation of gold nanorods: Inject 25 μL of the seed solution into the growth solution, mix the solution gently for 30 seconds, and let stand at 30 °C for 6 hours to obtain the desired GNRs;
[0041] 4) Preparation of modified GNRs@Gd 2 o 2 S: Mix 10 mL of uncentrifuged GNRs prepared in step 3) with 1 mL, 0.1 M hexamethylenetetramine, 0.5 mL, 0.1 M AA and 40 μL, 0.5 M thioa...
Embodiment 3
[0043] Preparation of modified GNRs@Gd with 20 nm thick shell 2 o 2 S, including the following steps:
[0044] 1) Preparation of seed crystal solution: mix 0.01 M, 0.25 mL HAuCl 4 Add to the 0.1 M, 9.75 mL CTAB solution and stir with freshly prepared ice-cold 0.01 M, 0.6 mL NaBH 4 The solution was added to the mixture solution, stirring was continued for 2 minutes, and then it was left to stand at room temperature for 2 h;
[0045] 2) Preparation of growth solution: mix 0.01 M, 2 mL HAuCl 4 with 0.01 M, 0.35 mL AgNO 3 Incubate with 0.1 M, 40 mL CTAB solution, then add 0.1 M, 0.32 mL AA;
[0046] 3) Preparation of gold nanorods: Inject 25 μL of the seed solution into the growth solution, mix the solution gently for 30 seconds, and let stand at 30 °C for 6 hours to obtain the desired GNRs;
[0047] 4) Preparation of modified GNRs@Gd 2 o 2 S: Mix 10 mL of uncentrifuged GNRs prepared in step 3) with 1 mL, 0.1 M hexamethylenetetramine, 0.5 mL, 0.1 M AA and 40 μL, 0.8 M thio...
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