Synthesis and light-emitting properties of poly(carbazolylacetylenes)
| Autor: | Hoi Sing Kwok, Yanhou Geng, Ben Zhong Tang, Priscilla Pui Sze Lee |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
chemistry.chemical_classification
Materials science Metals and Alloys Surfaces and Interfaces Polymer Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis chemistry.chemical_compound Monomer chemistry Group (periodic table) Excited state Polymer chemistry Materials Chemistry Luminescence |
| Zdroj: | Thin Solid Films. 363:149-151 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/s0040-6090(99)01029-9 |
| Popis: | A group of new carbazole-containing polyacetylenes, poly[n–(9–carbazolyl)–1–alkynes] [ m=n−2 ; m=3 (P2a), 9 (P2b)], poly[5–(3,6–dibromo–9–carbazolyl)–1–pentyne] (P3a), and poly[n–(9–carbazolyl)–1–chloro–1–alkynes] [ m=n−2 ; m=3 (P4a), m=9 (P4b)], have been synthesized using WCl6–Ph4Sn and MoCl5–Ph4Sn as catalysts. High molecular weight (up to 500 000) polymers have been obtained in high yields (up to 80%). The molecular structures of the polymers are characterized by spectroscopic methods. All the monomers except (P2a) are highly luminescent. The polymer with a long spacer length (P2b) emits intense deep-blue light when excited at 295 nm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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