Reversible Surface Morphology Changes of a Photochromic Diarylethene Single Crystal by Photoirradiation
Top Cited Papers
- 2 March 2001
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 291 (5509) , 1769-1772
- https://doi.org/10.1126/science.291.5509.1769
Abstract
The surface morphology of a diarylethene single crystal [1,2-bis(2,4-dimethyl-5-phenyl-3-thienyl)perfluorocyclopentene] determined by atomic force microscopy changed reversibly upon photoirradiation. The crystal underwent a thermally irreversible but photochemically reversible color change (colorless to blue) upon alternate irradiation with ultraviolet (wavelength λ = 366 nm) and visible (λ > 500 nm) light that drove reversible photocyclization reactions. Upon irradiation with 366-nm light, new steps appeared on the (100) single-crystalline surface that disappeared upon irradiation with visible light (λ > 500 nm). The step height, about 1 nm, corresponds to one molecular layer. Irradiation with 366-nm light formed valleys on the (010) surface that also disappeared by bleaching upon irradiation with visible light (λ > 500 nm). The surface morphological changes can be explained by the molecular structural changes of diarylethenes regularly packed in the single crystal. These crystals could potentially be used as photodriven nanometer-scale actuators.Keywords
This publication has 20 references indexed in Scilit:
- Photochromism of 1,2-Bis(2-ethyl-5-phenyl-3-thienyl)perfluorocyclopentene in a Single-Crystalline Phase. Conrotatory Thermal Cycloreversion of the Closed-Ring IsomerJournal of the American Chemical Society, 2000
- Reversible Diastereoselective Photocyclization of a Diarylethene in a Single-Crystalline PhaseJournal of the American Chemical Society, 2000
- Photochromism of 1,2-Bis(2-methyl-5-phenyl-3-thienyl)perfluorocyclopentene in a Single-Crystalline PhaseJournal of the American Chemical Society, 2000
- Photochromism of 1,2-Bis(2-methyl-6-nitro-1-benzothiophen-3-yl)perfluorocyclopentene in a Single-Crystalline Phase: Dichroism of the Closed-Ring Form IsomerJournal of the American Chemical Society, 1999
- X-ray Analysis of Structural Changes in Photochromic Salicylideneaniline Crystals. Solid-State Reaction Induced by Two-Photon ExcitationJournal of the American Chemical Society, 1999
- Photochromism of 1,2-Bis(2,5-dimethyl-3-thienyl)perfluoro- cyclopentene in a Single Crystalline PhaseJournal of the American Chemical Society, 1999
- Cystic FibrosisScientific American, 1995
- Atomic force microscopy and solid state photolyses: phase rebuildingJournal of Photochemistry and Photobiology A: Chemistry, 1994
- Photochemical reactions of organic crystalsChemical Reviews, 1987
- Reversible Photodimerization: a New Type of PhotochromismApplied Optics, 1972