| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2008-03-28 |
| タイトル |
|
|
タイトル |
Supramolecular Formation of Mono- and Bis-Modified Pyrene Cavitands and Their Fluorogenic Metal Sensory System in an Aqueous Solution |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Cavitand |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Pyrene |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Metal sensing |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Supramolecular formation |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 作成者 |
Kondo, Yoshihiko
Yamazaki, Yoshiaki
Nashirozawa, Norio
Narita, Miyuki
Hamada, Fumio
|
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
In order to study the supramolecular formations of guest-responsive cavitand derivatives in aqueous solution, synthesis of water-soluble fluorogenic cavitands, which are modified with mono- and bis-pyrene units (1 and 2, respectively), and their metal sensing abilities have been investigated. Compound 2 showed monomer and excimer emissions in both an organic and aqueous, which was contained a 10 vol.% DMF, solution, whereas compound 1 indicated these two emissions in only aqueous solution. The fluorescence spectral patterns of compounds 1 and 2 were changed depending on DMF concentrations in an aqueous solution. The extent of the excimer emission of 2 was the highest in a 50 vol.% DMF, whereas drastic decrease of this excimer emission was observed in over 60 vol.% DMF. On the other hand, compound 1 showed the highest excimer emission intensity between 10-30 vol.% DMF and middle emission was recognized in 30 vol% DMF. Finally, in over 50 vol.% DMF, no excimer emission of 1 was observed. The movements of the appended units of these compounds in various DMF concentrations were studied by the fluorescence and UV spectra and MM2-minimized structures. A ratio of excimer and monomer emission intensities of 1 and 2 were varied in 10-40 vol.% and 10-50 vol.% DMF contents in water, respectively. The UV spectra patterns of 1 or 2 were different between in 10-40 vol.%, 50 vol.% and over 60 vol.% or 10-50 vol.%, 60 vol.% and over 70 vol.% DMF aqueous solutions, respectively. The variations of fluorescence and UV spectra suggested that compounds 1 and 2 formed association dimer in 10-40 vol.% and 10-50 vol.% DMF aqueous solutions, respectively, and the canceling of these dimer formations was observed with increasing DMF content or metal concentration. Furthermore, fluorescent spectral changes and MM2-minimized structures suggested that the association dimer of 2, which formed one pair pyrene excimer in 10 vol.% DMF aqueous solution, was transformed into different configuration of association dimer making plural pyrene excimer pairs in 20-50 vol.% DMF aqueous solutions. In order to evaluate the metal sensing abilities of 1 and 2 in a 10 vol.% DMF aqueous solution, the ratio of decrement of an intensity of excimer emission with an addition of metal cation was used as a detecting parameter. Compounds 1 and 2 exhibited the highest sensing abilities for Na2+ and Co2+, respectively. |
|
言語 |
en |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 書誌情報 |
en : International Journal of the Society of Materials Engineering for Resources
巻 10,
号 1,
p. 106-112,
発行日 2002-03-01
|
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
13479725 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA1095475X |
| 出版者 |
|
|
出版者 |
The Society of Materilas Engineering for resources of Japan |
|
言語 |
en |
| 関連情報 |
|
|
関連タイプ |
isIdenticalTo |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.5188/ijsmer.10.106 |
ijsmer10-1q.pdf (868.4 kB)
