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Enhancing the emission of hexa-peri-hexabenzocoronene-containing polynorbornene via electron donating, unsymmetric constitution and solvent effects
Enhancing the emission of hexa-peri-hexabenzocoronene-containing polynorbornene via electron donating, unsymmetric constitution and solvent effects
- Source :
- Polymer Chemistry. 8:3327-3332
- Publication Year :
- 2017
- Publisher :
- Royal Society of Chemistry (RSC), 2017.
-
Abstract
- The organo-soluble and extremely stable polynorbornene PHNB-HPB with a hexaphenylbenzene (HPB) moiety was prepared by ring-opening metathesis polymerization (ROMP) followed by hydrogenation. The hexa-peri-hexabenzocoronene (HBC)-containing PHNB-HBC, which is insoluble in commercial organic solvents, was prepared by the cyclodehydrogenation of PHNB-HPB. The glass transition temperature of PHNB-HPB was 205 °C. The temperatures required for a 10% weight loss (Td10) for PHNB-HPB and PHNB-HBC were 428 °C and 456 °C under a nitrogen flow, respectively. The PHNB-HBC exhibited an ordered self-assembly in the solid state. The exfoliation of PHNB-HBC aggregates was tested by ultrasonication in various solvents. The PHNB-HBC dispersion solutions showed an intensive emission of the 0–0 transition (465 nm) due to the lower D6h symmetrical structure and alkoxy substituents. Between different solvents, the dispersion in N-cyclohexyl-2-pyrrolidone (CHP) showed the highest individual metric and the strongest 0–0 transition (465 nm), indicating higher dispersibility.
- Subjects :
- Polymers and Plastics
Organic Chemistry
Bioengineering
02 engineering and technology
ROMP
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Biochemistry
Exfoliation joint
0104 chemical sciences
chemistry.chemical_compound
Polymerization
chemistry
Polymer chemistry
Alkoxy group
Moiety
Solvent effects
0210 nano-technology
Glass transition
Hexaphenylbenzene
Subjects
Details
- ISSN :
- 17599962 and 17599954
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Polymer Chemistry
- Accession number :
- edsair.doi...........dd34e1f709936ed5812404413a7bfde9
- Full Text :
- https://doi.org/10.1039/c7py00359e