Two-photon mapping of local molecular orientations in hexaphenyl nanofibers

被引：18

作者：

Beermann, J

Bozhevolnyi, SI

Bordo, VG

Rubahn, HG

机构：

[1] Aalborg Univ, Inst Phys, Dept Phys & Nanotechnol, DK-9220 Aalborg O, Denmark

[2] Russian Acad Sci, AM Prokhorov Gen Phys Inst, Ctr Nat Sci, Moscow 119991, Russia

[3] Odense Univ, Dept Phys, DK-5230 Odense M, Denmark

来源：

OPTICS COMMUNICATIONS | 2004年 / 237卷 / 4-6期

关键词：

scanning optical microscopy; nonlinear optics;

D O I：

10.1016/j.optcom.2004.04.001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Two-photon microscopy is used to determine with a resolution of 0.7 mum the local orientations of hexaphenyl molecules in individual needle-shaped nanoaggregates, which possess submicron-widths and heights, whereas they extend to several hundred micrometers in a defined crystallographic direction along a mica surface. Polarized femtosecond laser light at two mutually perpendicular orientations excites luminescence in these nanofibers. From the ratio of polarized luminescence intensities two main orientation angles of the molecular long axes with respect to the long needle axes are revealed as a function of position on the needle. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：423 / 429

页数：7

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