Twisted polydiacetylene quantum wire: Influence of conformation on excitons in polymeric quasi-one-dimensional systems

被引：9

作者：

Al Choueiry, A. ^{[1
]}

Barisien, T. ^{[1
]}

Holcman, J. ^{[1
]}

Legrand, L. ^{[1
]}

Schott, M. ^{[1
]}

Weiser, G. ^{[2
,3
]}

Balog, M. ^{[4
]}

Deschamps, J. ^{[4
]}

Dutremez, S. G. ^{[4
]}

Filhol, J. -S. ^{[4
]}

机构：

[1] Univ Paris 06, CNRS, INSP, UMR 7588, F-75015 Paris, France

[2] Univ Marburg, Fac Phys, D-35037 Marburg, Germany

[3] Univ Marburg, Ctr Mat Sci, D-35037 Marburg, Germany

[4] Univ Montpellier 2, Equipe CMOS, Inst Charles Gerhardt Montpellier, ENSCM,UM1,CNRSUM2,UMR 5253, F-34095 Montpellier 5, France

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 12期

关键词：

CRYSTAL MONOMER MATRIX; SOLID-STATE POLYMERIZATION; 2 REACTIVE DIACETYLENES; PUMP-PROBE EXPERIMENTS; SINGLE-CRYSTAL; CONJUGATED POLYMER; TOPOCHEMICAL POLYMERIZATION; WANNIER EXCITONS; CHAINS; SPECTROSCOPY;

D O I：

10.1103/PhysRevB.81.125208

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Highly luminescent isolated polydiacetylene (PDA) chains in a new diacetylene crystal are studied. The diacetylene crystal structure and theoretical calculations suggest that the chains are not planar and more strongly twisted than any known PDA. Yet the chains behave as quasiperfect quantum wires, showing that this behavior is generic among PDA, provided crystal order is high enough. The exciton energy, E(0), is higher than in any other well-ordered PDA providing a relationship between E(0) and twist angle. On the other hand, the exciton binding energy and Bohr radius are significantly affected as demonstrated in electroabsorption experiments (and developed in a companion paper).

引用

页数：11

共 61 条

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