Fluorescent organic nanoparticles (FONs) for selective recognition of Al<sup>3+</sup>: application to bio-imaging for bacterial sample

Huerta-Aguilar, Carlos Alberto; Raj, Pushap; Thangarasu, Pandiyan; Singh, Narinder

doi:10.1039/c6ra01231k

Cited by 32 publications

(4 citation statements)

References 107 publications

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“…Upon addition of 20 μM of cobalt the three fold enhancement in the emission intensity of K1 (496 nm) was observed. The strong fluorescence ‘ON’ was associated with the formation of cobalt complex and sensing was due to inhibition of photo induce excited electron transfer mechanism (PET) . Moreover to confirm the cobalt complexation formation, fluorescence titration was carried out.…”

Section: Resultsmentioning

confidence: 99%

Fluorescence Chemosensors for Chemical Warfare Agent Mimic Diethylcyanophosphonate Via Co²⁺ -Naphthalimide Based Nanoaggregate in Aqueous Medium

Raj

Singh

2017

ChemistrySelect

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Two new Naphthalimide based dipodal receptors K1 and K2 has been synthesized and selectively formed upon complexation with cobalt ion. Further, these cobalt complexes (K1.Co 2 + and K2.Co 2 + ) were fabricated to nanoaggregate in aqueous medium. The stability of these nanoaggregates was established with DLS, TEM, AFM and emission spectroscopy. The nanoaggregates N1-N2 were utilized to selectively sensing of diethylcyanophosphonate in aqueous medium. The nanoaggre-gate N1 and N2 exhibit 2 fold enhancement in the emission spectrum in presence of Diethylcyanophosphonate (DECP) which is due to rigidity induced fluorescent enhancement. The detection limit to be achieved for DECP is 21 nM in aqueous medium. Additionally, the solution coated filter paper strip of nanoaggregate N1 can detect DECP, thus providing very simple and low coast sensing kit for DECP.

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Section: Resultsmentioning

confidence: 99%

Fluorescence Chemosensors for Chemical Warfare Agent Mimic Diethylcyanophosphonate Via Co²⁺ -Naphthalimide Based Nanoaggregate in Aqueous Medium

Raj

Singh

2017

ChemistrySelect

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“…Schiff bases can be used to modify NPs by surface modification methods such as grafting and encapsulation, and a variety of ion sensors have been fabricated. ,− Actually, organic NPs of Schiff base complexes can also be directly prepared. − For instance, Singh et al synthesized a Schiff base based tripod receptor and obtained a zinc complex on this basis, which can be used for the detection of F – and HSO 4 – . The fluorescence peak at 422 nm was enhanced by the addition of F – because the cavity interaction of F – in the complex which resulted in the separation of two aromatic nitro rings and inhibited the photoinduced electron transfer (PET) effect.…”

Section: Chromogenic and Fluorogenic Chemosensorsmentioning

confidence: 99%

Schiff Base-Modified Nanomaterials for Ion Detection: A Review

Zhong

Shi

et al. 2022

ACS Appl. Nano Mater.

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Ion detection is crucial for environmental quality, human health, and industry development. Schiff bases and their complexes are widely applied as the probes for ion detection in chemistry, environment, and biology fields. There are many kinds of interesting Schiff bases and their coordination complexes that have been designed and synthesized based on the facile synthesis. Recently, Schiff base chemistry has intercrossed with nanomaterials toward wide applications. Nanomaterials are characterized by their sizes in the range of several nanometers to several hundreds of nanometers and then with large specific surface area. They have unusual properties such as mechanical property, optical property, and catalytic property, which are usually not active for their bulk materials. The development of new nanomaterials has dramatically increased in the past two decades, especially the hybridization of inorganic nanomaterials with organic functional species. Schiff base is a very famous class of organic molecules with diversity structures and properties. The remarkable point is that they are synthesized facilely. In this review, the principles and methods of Schiff base preparation have been scanned briefly. Then nanomaterials functionalized by Schiff base to achieve efficient, rapid, and sensitive recognition of ions were elaborated. The types of nanomaterials are included the metal–organic frameworks (MOFs) and covalent organic frameworks (COFs) constructed by Schiff base ligands with nanosized pores and surface modification of nanoparticles (NPs) with Schiff bases, which can not only retain the advantages of the original nanomaterials but also improve the ability of ion-specific recognition. The development of colorimetric, fluorescence, and electrochemical sensors based on Schiff base nanomaterials for ion detection in recent years was carefully summarized as well. It should be mentioned that the types of ions in this review are mainly metal ions. Finally, the challenges in the future in this field have been proposed.

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“…As a result, the described nanoaggregates are capable of selective Fe(III) sensing with subnanomolar detection limit. Alternatively, the direct interaction of the chelator with the analyte can provide the analytical signal, as described for example in the case of N,N’-propylenebis(salycilimine)-based nanoaggregates sensitive to Al(III) ions content [72]. Another remarkable difference from the iron(III) sensor discussed above is that this probe provides a turn-on signal, compared to quenching-based turn-off principle mentioned previously.…”

Section: Applications Of Fluorescent Nanoparticlesmentioning

confidence: 99%

Organic Fluorescent Dye-based Nanomaterials: Advances in the Rational Design for Imaging and Sensing Applications

Svechkarev

Mohs

2019

CMC

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Self-assembled fluorescent nanomaterials based on small-molecule organic dyes are gaining increasing popularity in imaging and sensing applications over the past decade. This is primarily due to their ability to combine spectral property tunability and biocompatibility of small molecule organic fluorophores with brightness, chemical, and colloidal stability of inorganic materials. Such a unique combination of features comes with rich versatility of dye-based nanomaterials: from aggregates of small molecules to sophisticated core-shell nanoarchitectures involving hyperbranched polymers. Along with the ongoing discovery of new materials and better ways of their synthesis, it is very important to continue systematic studies of fundamental factors that regulate the key properties of fluorescent nanomaterials: their size, polydispersity, colloidal stability, chemical stability, absorption and emission maxima, biocompatibility, and interactions with biological interfaces. In this review, we focus on the systematic description of various types of organic fluorescent nanomaterials, approaches to their synthesis, and ways to optimize and control their characteristics. The discussion is built on examples from reports on recent advances in design and applications of such materials. Conclusions made from this analysis allow a perspective on future development of fluorescent nanomaterials design for biomedical and related applications.

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Fluorescent organic nanoparticles (FONs) for selective recognition of Al³⁺: application to bio-imaging for bacterial sample

Abstract: (a) Changes in fluorescence upon successive addition of Al3+ ions to salpn-ONPs; (b) titration profile of fluorescence; (c) recognition of Al3+ through bio-fluorescence Staphylococcus aureus bacterial cells.

Cited by 32 publications

References 107 publications

Fluorescence Chemosensors for Chemical Warfare Agent Mimic Diethylcyanophosphonate Via Co²⁺ -Naphthalimide Based Nanoaggregate in Aqueous Medium

Fluorescence Chemosensors for Chemical Warfare Agent Mimic Diethylcyanophosphonate Via Co²⁺ -Naphthalimide Based Nanoaggregate in Aqueous Medium

Schiff Base-Modified Nanomaterials for Ion Detection: A Review

Organic Fluorescent Dye-based Nanomaterials: Advances in the Rational Design for Imaging and Sensing Applications

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Fluorescent organic nanoparticles (FONs) for selective recognition of Al3+: application to bio-imaging for bacterial sample

Abstract: (a) Changes in fluorescence upon successive addition of Al3+ ions to salpn-ONPs; (b) titration profile of fluorescence; (c) recognition of Al3+ through bio-fluorescence Staphylococcus aureus bacterial cells.

Cited by 32 publications

References 107 publications

Fluorescence Chemosensors for Chemical Warfare Agent Mimic Diethylcyanophosphonate Via Co2+ -Naphthalimide Based Nanoaggregate in Aqueous Medium

Fluorescence Chemosensors for Chemical Warfare Agent Mimic Diethylcyanophosphonate Via Co2+ -Naphthalimide Based Nanoaggregate in Aqueous Medium

Schiff Base-Modified Nanomaterials for Ion Detection: A Review

Organic Fluorescent Dye-based Nanomaterials: Advances in the Rational Design for Imaging and Sensing Applications

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Product

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Fluorescent organic nanoparticles (FONs) for selective recognition of Al³⁺: application to bio-imaging for bacterial sample

Fluorescence Chemosensors for Chemical Warfare Agent Mimic Diethylcyanophosphonate Via Co²⁺ -Naphthalimide Based Nanoaggregate in Aqueous Medium

Fluorescence Chemosensors for Chemical Warfare Agent Mimic Diethylcyanophosphonate Via Co²⁺ -Naphthalimide Based Nanoaggregate in Aqueous Medium