A simple
and efficient approach to endow the controllable multi-stimuli-responsive
property for the supramolecular polymer was successfully developed
by rationally introducing iodine into a novel naphthalimide-functionalized
pillar[5]arene-based supramolecular polymer (PNA⊃GBP). Interestingly,
by introducing iodine into the supramolecular polymer PNA⊃GBP,
the iodine could not only control the optical properties and self-assembly
states of PNA⊃GBP via electronic donor–acceptor effect
but also control the molecular recognition properties by competitive
redox reaction. Benefiting from these excellent iodine controlled
multiresponse properties, the PNA⊃GBP showed selective fluorescent
response for cyanide, cysteine, and mercury in supramolecular polymer
gels, water solutions, and living cells with high sensitivities. The
supramolecular polymer PNA⊃GBP could act as a novel smart material
for selective detection CN–, Hg2+, and l-Cys.
A novel approach to achieve ultrasensitive response was successfully developed by rationally introducing the competition between cation-π and exo-wall π-π interactions into a pillar[5]arene-based supramolecular organogel (P5N-OG). Interestingly, the P5N-OG could be used for ion detection and separation, fluorescent display materials as well as ultrasensitive logic gates.
A novel approach for the design of multi-stimuli-responsive supramolecular functional materials was successfully developed by introducing the competition of π–π stacking and cation–π interactions into a pillar[5]arene-based supramolecular π-gel (MP5-G).
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