𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Conformational properties of quasi-particles in poly(p-phenylene vinylene)

✍ Scribed by Petr Toman; Lubomir Skála; Josef Pospišil

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
168 KB
Volume
8
Category
Article
ISSN
1616-301X

No coin nor oath required. For personal study only.

✦ Synopsis

We investigate the quasi-particle conformational defects (excitons, polarons and bipolarons) in phenylene vinylene oligomers (PVOs) consisting of up to 12 repeat units. The conformations are determined by minimisation of the total Hartree-Fock energy calculated at 3-21G level. The Hartree-Fock calculations of the excited states are followed by the CI-Singles calculation. The bond length alternation along the oligomer chain is discussed. On the basis of these results the vibrational transitions are calculated. To correct the basis set truncation error, the vibrational frequencies are multiplied by a uniform scaling factor. The types of vibrations are assigned. The theoretical spectra are in good agreement with the experimental infrared vibrational spectrum of poly( p-phenylene vinylene) (PPV). *

📜 SIMILAR VOLUMES

Photoluminescent properties of poly(p-ph
Photoluminescent properties of poly(p-phenylene vinylene thiophene-co-siloxane)
✍ T.-H. Tong; L.-C. Chien 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 151 KB 👁 2 views

A new p-phenylene-vinylene-thiophene-based siloxane block copolymer has been synthesized. The copolymer consists of alternating rigid and flexible blocks. The rigid blocks are composed of phenylene-vinylene-thiophene-based units, and the flexible blocks are derived from 1,3-dialkyldisiloxane units.

Conjugated copolymers of cyanosubstitute
Conjugated copolymers of cyanosubstituted poly(p-phenylene vinylene) with phenylene ethynylene and thienylene vinylene moieties: Synthesis, optical, and electrochemical properties
✍ Yingping Zou; Bo Peng; Bo Liu; Yongfang Li; Yuehui He; Kechao Zhou; Chunyue Pan 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 227 KB

## Abstract Three alternating conjugated copolymers of cyanosubstituted poly(__p__‐phenylene vinylene) (CN–PPV) with phenylene ethynylene and thienylene vinylene moieties, **P1, P2,** and **P3,** were synthesized via cross‐coupling polycondensation with Pd(PPh~3~)~2~Cl~2~ as a catalyst. Their struc