Nanoscale Imaging of the Interface Dynamics in Polymer Blends by Femtosecond Pump-Probe Confocal Microscopy

被引：36

作者：

Polli, Dario ^{[1
]}

Grancini, Giulia ^{[1
]}

Clark, Jenny ^{[2
]}

Celebrano, Michele ^{[3
]}

Virgili, Tersilla ^{[4
]}

Cerullo, Giulio ^{[1
]}

Lanzani, Guglielmo ^{[5
]}

机构：

[1] Politecn Milan, IFN CNR, Dipartimento Fis, I-20133 Milan, Italy

[2] Univ Cambridge, Cavendish Labs, Cambridge CB3 0HE, England

[3] ETHZ, Nanoopt Grp, Phys Chem Lab, CH-8093 Zurich, Switzerland

[4] CNR, Ist Foton & Nanotecnol, I-20133 Milan, Italy

[5] Politecn Milan, CNST IIT POLIMI, Dipartimento Fis, I-20133 Milan, Italy

来源：

ADVANCED MATERIALS | 2010年 / 22卷 / 28期

关键词：

FLUORESCENCE DECAY LIFETIME; ELECTRIC-FIELD DISTRIBUTION; CONJUGATED-POLYMER; OPTICAL MICROSCOPE; MORPHOLOGY; PHOTODIODES; EMISSION; DEVICES;

D O I：

10.1002/adma.200904387

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A polymer blend of a polyfluorene and an inert matrix is imaged with an innovative time-resolved confocal microscope. Local pump-probe signals (excited-state generation and deactivation) with sub-200-fs temporal resolution and 300-nm spatial resolution are measured. Peculiar dynamics at the interface between the segregated domains, invisible to standard optical microscopy, due to different inter-chain interactions and charge separation photophysics are detected.

引用

页码：3048 / 3051

页数：4

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