Abstract
Two copolymers of poly(p-phenylenevinylene) (PPV) containing low levels (0.8 and 3.6 mole %) of the 2,3,5,6-tetramethyl1,4-phenylenevinylene (TMPV) units were prepared via the sulfbnium salt precursor route. The luminescence properties of the two copolymers were studied in detail mainly for photoluminescence (PL) and electroluminescence (EL) characteristics in comparison with those of PPV itself. Inclusion of low levels of TMPV units improves EL efficiency by more than 10 times when a single layer device was constructed using ITO coated glass anode and aluminum metal cathode. This was explained by the possible partial disruption of main chain -conjugation by the TMPV units which force its phenylene or vinylene structure to twist out of the coplanar structure in order to avoid of the steric repulsion between the methyl and vinyl protons in the TMPV units. The U V-vis, PL and EL spectra of the copolymers support this supposition.
| Original language | English |
|---|---|
| Pages (from-to) | 298-303 |
| Number of pages | 6 |
| Journal | Acta Polymerica |
| Volume | 50 |
| Issue number | 8 |
| Publication status | Published - 1999 Dec 1 |
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ASJC Scopus subject areas
- Chemical Engineering(all)
- Polymers and Plastics
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Luminescence properties of poly[l,4-phenyIenevinylene-c0-(2,3,5,6tetramethyl-l,4-phenylenevinylene)] - Improved EL efficiency through partial disruption of main chain -conjugation by substituents. / Cluing, Sung Jae; Lee, Dong Won; Oh, Dong Keim; Lee, Cheol Eui; Jimg-Uin, I.
In: Acta Polymerica, Vol. 50, No. 8, 01.12.1999, p. 298-303.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Luminescence properties of poly[l,4-phenyIenevinylene-c0-(2,3,5,6tetramethyl-l,4-phenylenevinylene)] - Improved EL efficiency through partial disruption of main chain -conjugation by substituents
AU - Cluing, Sung Jae
AU - Lee, Dong Won
AU - Oh, Dong Keim
AU - Lee, Cheol Eui
AU - Jimg-Uin, I.
PY - 1999/12/1
Y1 - 1999/12/1
N2 - Two copolymers of poly(p-phenylenevinylene) (PPV) containing low levels (0.8 and 3.6 mole %) of the 2,3,5,6-tetramethyl1,4-phenylenevinylene (TMPV) units were prepared via the sulfbnium salt precursor route. The luminescence properties of the two copolymers were studied in detail mainly for photoluminescence (PL) and electroluminescence (EL) characteristics in comparison with those of PPV itself. Inclusion of low levels of TMPV units improves EL efficiency by more than 10 times when a single layer device was constructed using ITO coated glass anode and aluminum metal cathode. This was explained by the possible partial disruption of main chain -conjugation by the TMPV units which force its phenylene or vinylene structure to twist out of the coplanar structure in order to avoid of the steric repulsion between the methyl and vinyl protons in the TMPV units. The U V-vis, PL and EL spectra of the copolymers support this supposition.
AB - Two copolymers of poly(p-phenylenevinylene) (PPV) containing low levels (0.8 and 3.6 mole %) of the 2,3,5,6-tetramethyl1,4-phenylenevinylene (TMPV) units were prepared via the sulfbnium salt precursor route. The luminescence properties of the two copolymers were studied in detail mainly for photoluminescence (PL) and electroluminescence (EL) characteristics in comparison with those of PPV itself. Inclusion of low levels of TMPV units improves EL efficiency by more than 10 times when a single layer device was constructed using ITO coated glass anode and aluminum metal cathode. This was explained by the possible partial disruption of main chain -conjugation by the TMPV units which force its phenylene or vinylene structure to twist out of the coplanar structure in order to avoid of the steric repulsion between the methyl and vinyl protons in the TMPV units. The U V-vis, PL and EL spectra of the copolymers support this supposition.
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M3 - Article
VL - 50
SP - 298
EP - 303
JO - Macromolecular Chemistry and Physics
JF - Macromolecular Chemistry and Physics
SN - 1022-1352
IS - 8
ER -