Loading...
Please wait, while we are loading the content...
Similar Documents
Dipolar guest orientation in polymer co-crystals and macroscopic films
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tarallo, Oreste Petraccone, Vittorio Daniel, Christophe Guerra, Gaetano |
| Copyright Year | 2009 |
| Abstract | The crystal structures of δ-clathrates of syndiotactic polystyrene (s-PS) with highly polar guest molecules (nitrobenzene, NB and p-nitroaniline, NA) have been defined, on the basis of X-ray diffraction and FTIR linear dichroism analyses. The s-PS/NB co-crystal presents a structure very similar to those of the δ-clathrates already described in the literature, i.e. monoclinic and with the guest molecular plane nearly perpendicular to the host helical axes. The s-PS/NA co-crystal presents a definitely different structure, i.e. triclinic and with guest molecular planes inclined with respect to the host helical axes. The definition of the co-crystalline structures has allowed to establish that the a⊥c// uniplanar orientation of the co-crystalline phase leads the guest dipoles roughly perpendicular to the film plane, i.e. to a dipole orientation suitable for poling processes. Films presenting a high degree of a⊥c// uniplanar orientation of the s-PS/NA co-crystalline phase have been obtained and characterized by X-ray diffraction measurements. |
| Starting Page | 2381 |
| Ending Page | 2390 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/B904675P |
| Volume Number | 11 |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/ce/b9/b904675p/b904675p.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/B904675P |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
