| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9f18dbbfc9b4ef223f28a332b536b510
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1bba710e7aaa56d8ab15a910fcd3dc5f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a0fc4fb45e13ea51048246237d44a3aa |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-3458
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-601
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-2007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-54 |
| filingDate |
2011-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fe10523610d6a338c1660f053f4da9f4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8ce2354b86be7f6d8b56fbef0e6230eb |
| publicationDate |
2012-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2012025136-A1 |
| titleOfInvention |
Photo-switchable membrane and method |
| abstract |
Switchable gas permeation membranes in which a photo-switchable low-molecular-weight liquid crystalline (LC) material acts as the active element, and a method of making such membranes. Different LC eutectic mixtures were doped with mesogenic azo dyes and infused into track-etched porous membranes with regular cylindrical pores. Photo-induced isothermal phase changes in the imbibed mesogenic material afforded large, reversible changes in the permeability of the photo-switchable membrane to nitrogen. For example, membranes imbibed with a photo-switchable cyanobiphenyl LC material demonstrated low permeability in the nematic state, while the photo-generated isotropic state demonstrated a 16×-greater sorption coefficient. Both states obey a high linear sorption behavior in accordance with Henry's Law. In contrast, membranes imbibed with a photo-switchable phenyl benzoate LC material showed the opposite permeability behavior to the biphenyl-imbibed membrane, along with nonlinear sorption behavior. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2012234079-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11478520-B2 |
| priorityDate |
2010-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |