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Publikācija: Amplified Spontaneous Emission of Glass Forming DCM derivatives in PMMA Films
| Publikācijas veids | Zinātniskais raksts, kas indeksēts Web of science un/vai Scopus datu bāzē |
|---|---|
| Pamatdarbībai piesaistītais finansējums | Nav zināms |
| Aizstāvēšana: | , |
| Publikācijas valoda | English (en) |
| Nosaukums oriģinālvalodā | Amplified Spontaneous Emission of Glass Forming DCM derivatives in PMMA Films |
| Pētniecības nozare | 1. Dabaszinātnes |
| Pētniecības apakšnozare | 1.4. Ķīmija |
| Autori |
Aivars Vembris
Elmārs Zariņš Valdis Kokars |
| Atslēgas vārdi | DCM derivatives, amplified spontaneous emission, laser dye, solvatohcromic effect, guest-host system |
| Anotācija | 4-(dicyanomethylene)-2-methyl- 6-(p-dimethylaminostyryl)-4H-pyran (DCM) is well known red laser dye which can be used also in solid state organic lasers. The lowest threshold value of amplified spontaneous emission was achieved by doping 2wt% of DCM molecule in tris-(8-hydroxy quinoline) aluminium (Alq3) matrix. Further increase of dye concentration also increases threshold value. It is due to large intermolecular interaction which reduce photoluminescence quantum yield. Compounds with small intermolecular interaction and which exhibit similar amplified spontaneous properties as DCM could be useful for solid state organic lasers. In the work photoluminescence and amplified spontaneous emission properties of two DCM derivatives in poly(methyl methacrylate) (PMMA) matrix were investigated. Bulky trityloxyethyl groups are attached to the donor part of investigated molecules. These groups reduce intermolecular distance wherewith reduce photoluminescence quenching. More than one order of magnitude lower excitation threshold energy of the amplified spontaneous emission was achieved in doped polymer films with investigated compound in comparison to doped polymer with DCM. It means that the investigated compound is more perspective as a laser material compared to previously study. |
| DOI: | 10.1117/12.2052508 |
| Hipersaite: | http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1919877  |
| Atsauce | Vembris, A., Zariņš, E., Kokars, V. Amplified Spontaneous Emission of Glass Forming DCM derivatives in PMMA Films. Proceedings of SPIE, 2014, Vol.9137: Organic Photonics VI, 91371E-1.-91371E-6.lpp. ISSN 0277-786X. Pieejams: doi:10.1117/12.2052508 |
| Papildinformācija |
Citējamību skaits: |
| ID | 19053 |
