Morphology of self-assembled merocyanine J-aggregates in films studied by scanning near-field optical microscope

被引：7

作者：

Hamanaka, Y ^{[1
]}

Kawasaki, O

Yamauchi, T

Nakamura, A

机构：

[1] Nagoya Univ, Grad Sch Engn, Dept Appl Phys, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Japan Sci & Technol Corp, Core Res Evolut Sci & Technol, Shibuya Ku, Tokyo 150002, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 378卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(03)01239-9

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：

Morphology of 6-methyl merocyanine J-aggregates self-assembled in polyvinyl alcohol (PVA) films by a spin-coating method has been investigated by means of scanning near-field optical microscope and confocal laser scanning microscope. Photoluminescence image measurements show that J-aggregates form different domain structures with a grain-shape and a fiber-shape depending on the concentrations of merocyanine and arachidic acid in the PVA film. From the polarization-dependent measurements, we have found that the 6-methyl merocyanine molecules construct a hierarchical structure of J-aggregates in which a J-aggregate domain is composed of coherent aggregates with the same transition dipole orientation. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：47 / 54

页数：8

共 35 条

[1] Linear absorption as a tool to measure the exciton delocalization length in molecular assemblies [J].

Bakalis, LD ;

Knoester, J .

JOURNAL OF LUMINESCENCE, 2000, 87-9 (87) :66-70

[2] Extended dipole model for aggregates of dye molecules [J].

Czikklely, V. ;

Forsterling, H. D. ;

Kuhn, H. .

CHEMICAL PHYSICS LETTERS, 1970, 6 (03) :207-210

[3] Exciton delocalization in the B850 light-harvesting complex:: Comparison of different measures [J].

Dahlbom, M ;

Pullerits, T ;

Mukamel, S ;

Sandström, V .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (23) :5515-5524

[4] OPTICAL-PROPERTIES OF DISORDERED MOLECULAR AGGREGATES - A NUMERICAL STUDY [J].

FIDDER, H ;

KNOESTER, J ;

WIERSMA, DA .

JOURNAL OF CHEMICAL PHYSICS, 1991, 95 (11) :7880-7890

[5] Exciton relaxation and transfer in the LH2 antenna network of photosynthetic bacteria [J].

Freiberg, A ;

Timpmann, K ;

Lin, S ;

Woodbury, NW .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (52) :10974-10982

[6] Terahertz demultiplexing by a single-shot time-to-space conversion using a film of squarylium dye J aggregates [J].

Furuki, M ;

Tian, M ;

Sato, Y ;

Pu, LS ;

Tatsuura, S ;

Wada, O .

APPLIED PHYSICS LETTERS, 2000, 77 (04) :472-474

[7] Wavelength and intensity-dependent transient degenerate four-wave mixing in pseudoisocyanine J-aggregates [J].

Gadonas, R ;

Feller, KH ;

Pugzlys, A ;

Jonusauskas, G ;

Oberle, J ;

Rulliere, C .

JOURNAL OF CHEMICAL PHYSICS, 1997, 106 (20) :8374-8383

[8] Exciton delocalization length of merocyanine J-aggregates in Langmuir-Blodgett films studied from linear and nonlinear absorption measurements [J].

Hamanaka, Y ;

Kurasawa, H ;

Nakamura, A ;

Uchiyama, Y ;

Marumoto, K ;

Kuroda, S .

CHEMICAL PHYSICS LETTERS, 2002, 363 (3-4) :233-240

[9] A molecular yarn: Near-field optical studies of self-assembled, flexible, fluorescent fibers [J].

Higgins, DA ;

Kerimo, J ;

VandenBout, DA ;

Barbara, PF .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (17) :4049-4058

[10] EXCITONIC TRANSITIONS IN J-AGGREGATES PROBED BY NEAR-FIELD SCANNING OPTICAL MICROSCOPY [J].

HIGGINS, DA ;

BARBARA, PF .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (01) :3-7

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