Mechanofluorochromism of 1-Alkanoylaminopyrenes
To create a new series of mechanofluorochromic materials and to elucidate the mechanism of the phenomenon of mechanofluorochromism, 1‐alkanoylaminopyrenes including 1‐acetylaminopyrene (AAPy), 1‐octanoylaminopyrene (OAPy), and 1‐stearoylaminopyren (SAPy) were prepared. It was found that these materi...
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Published in | Chemphyschem Vol. 16; no. 14; pp. 3038 - 3043 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
WILEY-VCH Verlag
05.10.2015
WILEY‐VCH Verlag Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | To create a new series of mechanofluorochromic materials and to elucidate the mechanism of the phenomenon of mechanofluorochromism, 1‐alkanoylaminopyrenes including 1‐acetylaminopyrene (AAPy), 1‐octanoylaminopyrene (OAPy), and 1‐stearoylaminopyren (SAPy) were prepared. It was found that these materials exhibited mechanofluorochromism with emission colors in the crystalline samples changing reversibly from bluish purple to yellowish green, which could be induced by mechanical grinding. X‐ray crystal structure analysis, electronic absorption, and fluorescence spectroscopies, as well as fluorescence lifetime analysis and powder X‐ray diffraction analysis of AAPy suggested that the present mechanofluorochromism was caused by developing crystal defects through grinding. Intermolecular hydrogen bonds were suggested to play an important role in the occurrence of mechanofluorochromism, suppressing the face‐to‐face overlapping of pyrene moieties to form excimers in the pristine crystal.
Exhibitionist: 1‐Alkanoylaminopyrenes (AAPy, OAPy, and SAPy), as simple monosubstituted pyrenes, are found to exhibit mechanofluorochromism. Intermolecular hydrogen bonds through amido groups were suggested to play an important role in the exhibition of mechanofluorochromism. |
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Bibliography: | istex:D12B21265EC8312D4AD0B2B7749AFA7D074A42D0 ArticleID:CPHC201500383 ark:/67375/WNG-4Q0CGSP0-7 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1439-4235 1439-7641 |
DOI: | 10.1002/cphc.201500383 |