RRC ID 38407
著者 Myochin T, Kiyose K, Hanaoka K, Kojima H, Terai T, Nagano T.
タイトル Rational design of ratiometric near-infrared fluorescent pH probes with various pKa values, based on aminocyanine.
ジャーナル J Am Chem Soc
Abstract Novel ratiometric, near-infrared fluorescent pH probes with various pK(a) values have been designed and synthesized on the basis of aminocyanine bearing a diamine moiety, and their photochemical properties were evaluated. Under acidic conditions, these pH probes showed a 46- to 83-nm red shift of the absorption maximum. This change is sufficiently large to permit their use as ratiometric pH probes, and is reversible, whereas monoamine-substituted aminocyanines showed irreversible changes because of their instability under acidic conditions. Furthermore, the pK(a) values of these probes can be predicted from the calculated pK(a) values of the diamine moieties, obtained from the SciFinder database. This design strategy is very simple and flexible, and should be applicable to develop NIR pH probes for various applications.
巻・号 133(10)
ページ 3401-9
公開日 2011-3-16
DOI 10.1021/ja1063058
PMID 21341656
MeSH Diamines / chemistry* Fluorescent Dyes / chemical synthesis Fluorescent Dyes / chemistry* HeLa Cells Humans Hydrogen-Ion Concentration Spectroscopy, Near-Infrared / methods*
IF 14.612
引用数 203
WOS 分野 CHEMISTRY, MULTIDISCIPLINARY
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ヒト・動物細胞