Iodine Controlled Pillar[5]arene-Based Multiresponsive Supramolecular Polymer for Fluorescence Detection of Cyanide, Mercury, and Cysteine

Abstract

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 purine derivative‐based colorimetric chemosensor for sequential detection of copper ion and sulfide anion

“…In recent years, more and more effort has been put into some sensors for sequential detection of ions . In particular, some metal complexes showed selectivity toward targeted anions in systems, such as Fe–HSO 4, Fe–F and Hg–I .…”

Novel fluorescent supramolecular polymer metallogel based on Al3+ coordinated cross‐linking of quinoline functionalized‐ pillar[5]arene act as multi‐stimuli‐responsive materials

“…Moreover, pillar[n]arenes, a new class of macrocyclic hosts, have been studied intensively since 2008 . Over the past ten years, pillar[n]arene derivatives are recognized as ideal building blocks for the construction of various supramolecular systems (supramolecular polymer gels, pseudorotaxanes, rotaxanes, supramolecular organic frameworks, supramolecular polymer networks, supramolecular hexagonal boxes and so on) .…”

A novel fluorescent sensor based on 4-(diethylamino)-2-(hydroxy)-phenyl imine functionalized naphthalimide for highly selective and sensitive detection of CN– and Fe3+

“…[25][26][27] Compared with ion chromatography, 28 flow injection analysis 29 and titration analysis detection methods, 30 fluorescence method is simple, low cost and widely used. [31][32][33] In view of these and as part of our research interest in ions recognition, [34][35][36][37][38] herein, we reported a novel sensor molecule (HB1) based on 4-(diethylamino)-2-(hydroxy)-phenyl imine functionalized naphthalimide derivative (Scheme 1). Interestingly, the sensor molecule HB1 could not only fluorescence detection CNin DMSO/H 2 O (8 : 2, v/v) solution but also dual-channel (absorption and fluorescence) detection of Fe 3+ in DMSO solution with high selectivity and sensitivity.…”