Polymer-based nano composite material and light filter based on same
A technology of nanocomposite materials and polymers, applied in the field of polymer-based nanocomposite materials and optical filters based on them, can solve the problems of poor filter performance, low transmittance, thick thickness, etc., and achieve good weather resistance, Good stability and thin thickness
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Embodiment 1
[0070] The preparation of embodiment 1 polymer-based nanocomposite
[0071] Sample MA 3 Bi 2 Br 9 / Preparation of Polymer (PMMA)
[0072] The polymer (PMMA) is dissolved in DMF to obtain a clear and transparent polymer glue, and the MABr (methylamine bromide) of the precursor I and the BiBr of the precursor II 3 Dissolve in DMF at a molar ratio of 3:2 to obtain a precursor solution, add the precursor solution to the polymer glue with a solid content of 50%, mix evenly, and obtain 1 by casting and drying. # Sample MA 3 Bi 2 Br 9 / polymer.
[0073] Other conditions remain unchanged, change the solid content to 10%, 20%, 30%, 40%, get 2 respectively # 、3 # 、4 # 、5 # Sample MA 3 Bi 2 Br 9 / polymer.
[0074] Sample MA 3 In 2 Cl 9 / Preparation of Polymer (PVDc)
[0075] Sample MA 3 In 2 Cl 9 / Polymer preparation process and sample MA 3 Bi 2 Br 9 / The preparation process of the polymer is similar, the difference is that the precursor I is replaced...
Embodiment 2
[0082] Example 2 is based on 1 # Sample MA 3 Bi 2 Br 9 / Polymer Longpass Filter C1 # ~C5 # preparation of
[0083] Use a glass plate as a substrate, clean the surface of the glass plate, and dissolve the dissolved 1 # Sample MA 3 Bi 2 Br 9 / polymer (PMMA) mixture is coated on a glass plate; a wet film with a thickness of 200 μm is scraped off with a scraper (corresponding to a dry film thickness of about 20 μm); the glass plate coated with a wet film is placed in a vacuum drying oven Dry in vacuum at 50°C, and anneal at 80°C for 30min after complete drying to obtain MA-based 3 Bi 2Br 9 / Polymer Longpass Filter C1 # .
[0084] The relationship between the transmittance of the filter and the wavelength is as follows: image 3 shown. Depend on image 3 It can be seen that the transmittance of the optical filter in the wavelength range greater than 420nm is >90%, the average cut-off depth is less than OD2, and the cut-off steepness is large. The comparison chart o...
Embodiment 3
[0089] Example 3 is based on 6 # Sample MA 3 In 2 Cl 9 / Preparation of polymer double-pass filter
[0090] Use a glass plate as a substrate, clean the surface of the glass plate, and dissolve the dissolved 6 # Sample MA 3 In 2 Cl 9 / Polymer (PVDc) compound mixture is coated on a glass plate; a wet film with a thickness of 200 μm is scraped off with a scraper (corresponding to a dry film thickness of about 20 μm); the glass plate coated with a wet film is placed in a vacuum drying oven Vacuum drying at 60°C, and annealing at 80°C for 30min after complete drying to obtain MA-based 3 In 2 Cl 9 / Polymer long-wave pass filter, denoted as 6 # .
[0091] The relationship between the transmittance of the filter and the wavelength is as follows: Figure 4 shown. Depend on Figure 4 It can be seen that the filter has higher transmittance in the range of 250-320nm and greater than 345nm, and the peak transmittance in the range of 250-320nm is about 82%, and the transmitta...
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Abstract
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