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- W2079682511 abstract "Herein, we explore a new strategy in the chemo-sensor field for fluorescence amplification upon binding with metal ions based on controlled participation of the nitrogen lone pair orbital. The basic architecture of the sensor entails a fluorophore, the sp(2) hybridized nitrogen lone pair (-C═N-), and a chelator site referred to as the control part. Though nonplanar and nonfluorescent, compound IC1 achieved pseudo planarity from binding with Zn(2+) as indicated by the increased fluorescence signal. Its other analogue (IC2) is also planar, and unlike IC1-Zn(2+) was fluorescent with a lack of binding affinity to metal ions. The time-dependent density functional theory (TDDFT) calculations revealed that the fluorescence amplification was due to the blocking of the nitrogen lone pair orbital; unlikely geometrical rearrangements were insignificant. This could indicate a breakthrough concept in the future design of fluorescent turn-on sensors." @default.
- W2079682511 created "2016-06-24" @default.
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- W2079682511 date "2010-08-24" @default.
- W2079682511 modified "2023-10-09" @default.
- W2079682511 title "Rationally Designed Fluorescence Turn-On Sensors: A New Design Strategy Based on Orbital Control" @default.
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- W2079682511 doi "https://doi.org/10.1021/ic101165k" @default.
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