Electric field induced quenching of the fluorescence of a conjugated polymer probed at the single molecule level

被引：31

作者：

Hania, PR ^{[1
]}

Scheblykin, IG ^{[1
]}

机构：

[1] Lund Univ, Ctr Chem, Dept Phys Chem, SE-22100 Lund, Sweden

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 414卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2005.08.058

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electric field (EF) induced quenching of the fluorescence of large (ca. 10(3) monomers) single chains of MEH-PPV was observed. Directly after application of the field most of the individual MEH-PPV chains were either unaffected by the field or completely quenched by it, while the number of affected molecules increased with the strength of the EF Moreover, application of the field induced fluorescence blinking. Both effects are attributed to EF-assisted formation of long-living charged species that during their lifetime act as quenchers for excitations. The same type of quenchers are thought to be responsible for blinking observed without an electric field. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：127 / 131

页数：5

共 25 条

[1] Exciton dissociation and charge photogeneration in pristine and doped conjugated polymers [J].

Arkhipov, VI ;

Bässler, H .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 2004, 201 (06) :1152-1187

[2] Fluorescence quenching and excitation transfer between semiconducting and metallic organic layers [J].

Åsberg, P ;

Nilsson, P ;

Inganäs, O .

JOURNAL OF APPLIED PHYSICS, 2004, 96 (06) :3140-3147

[3] Extrinsic and intrinsic dc photoconductivity in a conjugated polymer [J].

Barth, S ;

Bassler, H ;

Rost, H ;

Horhold, HH .

PHYSICAL REVIEW B, 1997, 56 (07) :3844-3851

[4] ELECTRIC-FIELD-INDUCED PHOTOLUMINESCENCE QUENCHING IN THIN-FILM LIGHT-EMITTING-DIODES BASED ON POLY(PHENYL-P-PHENYLENE VINYLENE) [J].

DEUSSEN, M ;

SCHEIDLER, M ;

BASSLER, H .

SYNTHETIC METALS, 1995, 73 (02) :123-129

[5] PHOTOLUMINESCENCE QUENCHING IN A POLYMER THIN-FILM FIELD-EFFECT LUMINISTOR [J].

DYREKLEV, P ;

INGANAS, O ;

PALOHEIMO, J ;

STUBB, H .

JOURNAL OF APPLIED PHYSICS, 1992, 71 (06) :2816-2820

[6] Carrier generation process in poly(p-phenylene vinylene) by fluorescent quenching and delayed-collection-field techniques [J].

Esteghamatian, M ;

Popovic, ZD ;

Xu, G .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (32) :13716-13719

[7] F-V/SMS: A new technique for studying the structure and dynamics of single molecules and nanoparticles [J].

Gesquiere, AJ ;

Park, SJ ;

Barbara, PF .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (29) :10301-10308

[8] Dynamics of charge pair generation in ladder-type poly(para-phenylene) at different excitation photon energies -: art. no. 035215 [J].

Gulbinas, V ;

Zaushitsyn, Y ;

Bässler, H ;

Yartsev, A ;

Sundström, V .

PHYSICAL REVIEW B, 2004, 70 (03) :035215-1

[9] Dynamics of the electric field-assisted charge carrier photogeneration in ladder-type poly(para-phenylene) at a low excitation intensity -: art. no. 107401 [J].

Gulbinas, V ;

Zaushitsyn, Y ;

Sundström, V ;

Hertel, D ;

Bässler, H ;

Yartsev, A .

PHYSICAL REVIEW LETTERS, 2002, 89 (10) :107401-107401

[10] Electric field dependent generation of geminate electron-hole pairs in a ladder-type π-conjugated polymer probed by fluorescence quenching and delayed field collection of charge carriers [J].

Hertel, D ;

Soh, EV ;

Bässler, H ;

Rothberg, LJ .

CHEMICAL PHYSICS LETTERS, 2002, 361 (1-2) :99-105

← 1 2 3 →