메뉴 건너뛰기




Volumn 14, Issue 26, 1998, Pages 7511-7518

Investigation of photosensitive Langmuir-Blodgett monolayers by in situ atomic force microscopy and absorption spectroscopy

Author keywords

[No Author keywords available]

Indexed keywords

ABSORPTION SPECTROSCOPY; AGGLOMERATION; ATOMIC FORCE MICROSCOPY; DIFFUSION; ISOMERIZATION; MONOLAYERS; MORPHOLOGY; NITROGEN COMPOUNDS; PHOTOCHEMICAL REACTIONS; PHOTOSENSITIVITY; ULTRAVIOLET RADIATION;

EID: 0032292938     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la9805802     Document Type: Article
Times cited : (30)

References (49)
  • 41
    • 11644282826 scopus 로고    scopus 로고
    • note
    • UV light at the two wavelengths 334 and 365 nm from the mercury lamp triggers the photoisomerization of both chromophores and the subsequent formation of J-aggregates. The initial UV irradiation using 334 nm light was more efficient for the growth of J-aggregates. This may be related to the fact that the absorbance of SP is larger at 334 nm than at 365 nm, and vice versa for trans-APT. A triple 10-min illumination with 334 nm light was normally chosen as the initial illumination in order to reach a quasi-stationary state.
  • 42
    • 11644314741 scopus 로고    scopus 로고
    • note
    • These small domains are approximately 4 nm deeper than the major phase and are interpreted as defects. The three-dimensional structures are likely due to multilayers. (40) Squares of 1 μm × 1 μm were removed during the first scan with an applied force between the tip and the sample of several nanonewtons and a scan frequency of1 Hz. Repetitive scans under the same conditions did not lead to any further change of the hole depth. (41) A similar photoeffect originating from the homogeneous monolayer phase has also been observed. In those rare cases, the extent of the morphological change was quite small. (42) The reversible morphological change of monolayers of APT on mica was observed by in situ AFM at a higher resolution. Small structures were reversibly erased by UV light and restored by visible light. The films were prepared under the same conditions as the SP/ APT mixed films. Large-scale defects and small irregular bilayer domains contributed to a more complex aspect of the images.
  • 48
    • 1842329806 scopus 로고    scopus 로고
    • (c) Fleury, V. Nature 1997, 390, 145.
    • (1997) Nature , vol.390 , pp. 145
    • Fleury, V.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.