Cation exchange reversibly switches rotor speed and is monitored by a networked fluorescent reporter

Framework 1, a freely rotating turnstile, is transformed by sequential metal ion addition into the coordination-based double-minimum rotors [M 2 ( 1 )] 2 n + that operate at 8 kHz (M = Zn 2+ ; n = 2) and 30 kHz (M = Cu + ; n = 1). In a network with the fluorescent receptor 2 , the metal ion exchange...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2019-06, Vol.48 (25), p.943-947
Main Authors: Özer, Merve S, Paul, Indrajit, Goswami, Abir, Schmittel, Michael
Format: Article
Language:English
Subjects:
Cation exchanging
Fluorescence
Ion exchange
Ions
Metal ions
Rotor speed
Rotors
Switches
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Summary:Framework 1, a freely rotating turnstile, is transformed by sequential metal ion addition into the coordination-based double-minimum rotors [M 2 ( 1 )] 2 n + that operate at 8 kHz (M = Zn 2+ ; n = 2) and 30 kHz (M = Cu + ; n = 1). In a network with the fluorescent receptor 2 , the metal ion exchange at [M 2 ( 1 )] 2 n + and thus indirectly the rotor speed is reported by distinct fluorescence changes at 2 . The three-step transformation of a turnstile into a zinc rotor (8 kHz) and then into a copper rotor (30 kHz) was achieved with the last transformation being monitored by a fluorescence reporter.
ISSN:1477-9226
1477-9234
DOI:10.1039/c9dt01633c