High performance sol-gel spin-on glass materials
View Patent ↗Hybrid sol-gel materials are provided, which may be produced by the reaction of an alkyl or dialkyl substituted trialkoxysilane or dialkoxysilane reacting with a silane diol, wherein said alkyl group has from 1 to 8 carbon atoms. A process is also provided for patterning the sol-gel spin-on glass material by: a) coating a substrate with the spin-on glass material; b) exposing the coated substrate of step a) to UV illumination in a desired pattern; c) post-exposure baking the coated substrate of step b) at a temperature from 100° C. to 120° C. for 30 to 60 minutes; d) cooling the coated substrate of step c) to room temperature; e) removing the non-exposed areas of the coating on the coated substrate of step d); f) drying the coated substrate of step e); g) hard baking the coated substrate of step f) at a temperature from 120° C. and 150° C. for 1 to 3 hours.
1. A process for producing a non-aqueous sol-gel spin-on glass material comprising a hybrid glass/polymer material, by reacting an alkyl trialkoxysilane, an alkyl dialkoxysilane or a dialkyl dialkoxysilane with a silane diol, wherein said alkyl group has from 1 to 8 carbon atoms, wherein the reaction of the alkyl trialkoxysilane, alkyl dialkoxysilane or dialkyl dialkoxysilane silane with the silane diol is carried out in a non-aqueous medium in the presence of a calalyst, wherein the catalyst is selected from: a) a tin catalyst or b) a dibutyltin diluarate, titanium isopropoxide, acetic acid or trifluroroacetic acid catalyst.
2. The process of claim 1 , wherein the silane diol is a diphenylsilanediol, a 1,3-Bis (3-hydroxypropyl) tetramethyldisiloxane, a 1,3-Bis (4-hydroxybutyl) tetramethyldisiloxane, a fluorinated silane diol, or a mixture of one or more of these silane diols.
3. The process of claim 1 , wherein the alkyl group is replaced with a methacyloxypropyl, acryloxypropyl, or epoxy moiety.
4. The process of claim 1 , wherein the trialkoxysilane has 1 C 1 to C 8 alkyl or methacryloxypropyl groups on the same molecule and the dialkoxysilane has 1 to 2 C 1 to C 8 alkyl or methacryloxypropyl groups on the same molecule.
5. The process of claim 1 , further comprising adding a UV light blocking material and/or an oxygen scavenger.
6. The process of claim 1 , further comprising adding a light-scattering material.
7. The process of claim 1 , further comprising adding a coupling agent.
8. The process of claim 7 , wherein the coupling agent is a dibutoxyaluminoxytriethoxysilane, a mixture of zirconium isopropoxide and methacrylic acid, or another transition metal propoxide.
9. A non-aqueous sol-gel spin-on glass material comprising a hybrid glass/polymer material containing a phosphor dopant, which consists essentially of a YAG base phosphor or moisture sensitive phosphor nano-particles, said sol-gel spin-on-glass material selected from the group having the following formulas:
10. The non-aqueous sol-gel spin-on glass material of claim 9 , having the following formula:
11. The non-aqueous sol-gel spin-on glass material of claim 9 , having the following formula:
12. The non-aqueous sol-gel spin-on glass material of claim 9 , having the following formula:
13. The non-aqueous sol-gel spin-on glass material of claim 9 having the following formula:
14. The non-aqueous sol-gel spin-on glass material of claim 9 , further comprising a UV light blocking material and/or an oxygen scavenger.
15. The non-aqueous sol-gel spin-on glass material of claim 9 , further comprising a light-scattering material.
16. A process for producing the non-aqueous sol-gel spin-on glass material of claim 9 , the process comprising reacting an alkyl substituted trialkoxysilane, an alkyl substituted dialkoxysilane or a dialkyl substituted dialkoxysilane with a silane diol, wherein said alkyl group has from 1 to 8 carbon atoms, wherein the reaction of the alkyl substituted trialkoxysilane, alkyl substituted dialkoxysilane or dialkyl substituted dialkoxysilane silane with the silane diol is carried out in a non-aqueous medium in the presence of a catalyst, the process further comprising adding to said sol-gel spin-on glass material a phosphor dopant, which consists essentially of a YAG base phosphor or moisture sensitive phosphor nano-particles.