Multi-functional ratiometric fluorescent chemosensors of poly(N-isopropylacrylamide) containing rhodamine 6G and 1,8-naphthalimide moieties

Kong, Fantao; Lin, Mengqi; Qiu, Teng

doi:10.1016/j.polymer.2018.07.068

Cited by 15 publications

(9 citation statements)

References 36 publications

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“…The monomers, N‐(rhodamine‐6G) lactam‐N′‐methacryloyl ethylenediamine (R6GEM) and N‐( n ‐butyl)‐4‐(4‐[2‐methacryloyloxyethyl]‐piperazine‐1‐yl)‐1,8‐naphthalimide (BMPN), were synthesized according to our previous work 26 . Azobisisobutyronitrile (AIBN) was purchased from Aladdin and recrystallized in ethanol twice.…”

Section: Methodsmentioning

confidence: 99%

“…The copolymer RAFT agent, P(NIPAM‐ co ‐BMPN‐ co ‐R6GEM), was synthesized under same conditions as our previous work 26 . Briefly, NIPAM (1.122 g, 10 mmol), R6GEM (0.143 g, 0.25 mmol), BMPN (0.112 g, 0.25 mmol), S‐1‐Dodecyl‐S′‐(α, α'‐dimethyl‐α''‐acetic acid) trithiocarbonate (0.055 g, 0.15 mmol), AIBN (0.0082 g, 0.05 mmol) and 6 ml 1,4‐dioxane was added in a 25 ml three necked flask in order.…”

Section: Methodsmentioning

confidence: 99%

“…Poly(N‐isopropylacrylamide) (PNIPAM) is a frequently‐used polymer for thermometers and chemosensors due to its specific water‐solubility, which can be controlled by temperature 21–23 . The donor and acceptor fluorophores have been introduced into PNIPAM and designed as multi‐functional ratiometric fluorescent sensors based on FRET mechanism 24–26 . A series of block copolymers, poly(N‐isopropylacrylamide)‐ b ‐poly(N‐vinylcarbazole) (PNIPAM‐ b ‐PVK), have been synthesized via RAFT polymerization and investigated their temperature, stimuli, and pH responsive behaviors 27 .…”

Section: Introductionmentioning

confidence: 99%

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Ratiometric fluorescent chemosensor based on the block copolymer of poly(N‐isopropylacrylamide)‐b‐poly(N‐vinylcarbazole) containing rhodamine 6G and 1,8‐naphthalimide moieties

Kong

Jia

Zhang

et al. 2021

J of Applied Polymer Sci

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We have synthesized an amphiphilic block copolymer poly(N‐isopropylacrylamide)‐b‐poly(N‐vinylcarbazole) containing 1,8‐naphthalimide and spirolactam rhodamine 6G moieties via reversible addition‐fragmentation chain transfer radical polymerization. The photoluminescence (PL) spectrum of the poly(N‐vinylcarbazole) block well matches the absorption spectrum of the 1,8‐naphthalimide moiety and the enhanced emission with a peak at 510 nm from the 1,8‐naphthalimide moiety is found in the block copolymer film for excitation at 330 nm. The 560‐nm emission from the rhodamine 6G moiety is observed as the block copolymer film sprayed by Britton‐Robinson (B‐R) buffers or Fe3+ aqueous solutions for excitation at 330 and 400 nm. The PL intensity at 560 nm is markedly increased for the pH value of the B‐R buffer lower than 3.0 or the Fe3+ concentration in water higher than 5 × 10−4 M. The 560‐nm PL intensity is much higher for the block copolymer film photoexcited at 330 nm than that photoexcited at 400 nm due to double‐step resonance energy transfer. The PL intensity ratio of 560 to 510 nm (I560/I510) is dependent on the resonance energy transfer from 1,8‐naphthalimide to rhodamine 6G, which is sensitive to the concentrations of H+ and Fe3+ ions in water.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ratiometric fluorescent chemosensor based on the block copolymer of poly(N‐isopropylacrylamide)‐b‐poly(N‐vinylcarbazole) containing rhodamine 6G and 1,8‐naphthalimide moieties

Kong

Jia

Zhang

et al. 2021

J of Applied Polymer Sci

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“…Copolymer P8‐Rh containing the rhodamine 6G spirolactam and 1,8‐naphthalimide moieties was synthesized by using RAFT radical polymerization ( Figure a). [ 76 ] The linear relationship between analytical answer and pH, the concentration of Fe 3+ ion or temperature makes the copolymer as a multifunctional ratiometric fluorescent chemosensor. The fluorescence intensity at 555 nm relative to that at 520 nm (I 555 /I 520 ) is dependent on the resonance energy transfer from 1,8‐naphthalimide to rhodamine 6G.…”

Section: Sensors For Cationsmentioning

confidence: 99%

Naphthalimide‐Based Fluorescent Polymers for Molecular Detection

Oshchepkov

Oshchepkova

et al. 2021

Advanced Optical Materials

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The beginning of the 21st century was marked by the intensive development of fiber‐optic sensors. New functional materials with excellent sensory properties are required to design such sensors. Fluorescent probes for neutral and charged molecules are constantly developing. However, only a small part of the reported probes was successfully converted into functional sensing polymers and found real‐world applications. A great challenge is to retain the sensing properties of a probe in a polymer matrix. The purpose of this review is to understand how properties of a probe are changed upon incorporation into a polymer and to reveal successful approaches. The review focuses on the use of the naphthalimide‐based probes in the construction of sensing polymers. The literature overview is presented according to the nature of the guest molecules targeted for the quantitative detection: cations, anions, and small organic molecules.

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“…Nowadays, polymer-based fluorescent chemosensors have attracted a wide range of interests due to their simplicity of use, signal amplification, combination of different outputs, and ease of fabrication into devices [43,44]. Immobilizing small molecular receptors onto hydrophilic polymers has been proved to be an elegant strategy to construct water-soluble chemosensors [45,46]. Therefore, the combination of Schiff base derivatives and hydrophilic polymers could be an efficient pathway to develop fluorescent chemosensors for selective detection of Al 3+ in 100% aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

A Highly Selective Turn-on and Reversible Fluorescent Chemosensor for Al3+ Detection Based on Novel Salicylidene Schiff Base-Terminated PEG in Pure Aqueous Solution

Bai

et al. 2019

Polymers

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The development of highly selective and sensitive chemosensors for Al3+ detection in pure aqueous solution is still a significant challenge. In this work, a novel water-soluble polymer PEGBAB based on salicylidene Schiff base has been designed and synthesized as a turn-on fluorescent chemosensor for the detection of Al3+ in 100% aqueous solution. PEGBAB exhibited high sensitivity and selectivity to Al3+ over other competitive metal ions with the detection limit as low as 4.05 × 10−9 M. PEGBAB displayed high selectivity to Al3+ in the pH range of 5–10. The fluorescence response of PEGBAB to Al3+ was reversible in the presence of ethylenediaminetetraacetic acid (EDTA). Based on the fluorescence response, an INHIBIT logic gate was constructed with Al3+ and EDTA as two inputs. Moreover, test strips based on PEGBAB were fabricated facilely for convenient on-site detection of Al3+.

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Multi-functional ratiometric fluorescent chemosensors of poly(N-isopropylacrylamide) containing rhodamine 6G and 1,8-naphthalimide moieties

Cited by 15 publications

References 36 publications

Ratiometric fluorescent chemosensor based on the block copolymer of poly(N‐isopropylacrylamide)‐b‐poly(N‐vinylcarbazole) containing rhodamine 6G and 1,8‐naphthalimide moieties

Ratiometric fluorescent chemosensor based on the block copolymer of poly(N‐isopropylacrylamide)‐b‐poly(N‐vinylcarbazole) containing rhodamine 6G and 1,8‐naphthalimide moieties

Naphthalimide‐Based Fluorescent Polymers for Molecular Detection

A Highly Selective Turn-on and Reversible Fluorescent Chemosensor for Al3+ Detection Based on Novel Salicylidene Schiff Base-Terminated PEG in Pure Aqueous Solution

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