Fluorescent detection and imaging of Hg 2+ using a novel phenanthroline derivative based single- and two-photon excitation

Zhang, Xian; Li, Long-long; Liu, Yingkai

doi:10.1016/j.msec.2015.10.080

Cited by 11 publications

(4 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the fluorescent maximum point appeared at the ratio of Ca 2+ /probe = 0.5, which is different from that of OP excitation. This may be attributed to the higher concentration (8 × 10 −4 mol/L) of the dye under TP excitation, and this phenomenon was found in our previous reports [18,34].…”

Section: Resultssupporting

confidence: 66%

Enhanced Two-Photon Fluorescence and Fluorescence Imaging of Novel Probe for Calcium Ion by Self-Assembly with Conjugated Polymer

Zhai

Wang

et al. 2019

Polymers

Self Cite

View full text Add to dashboard Cite

The calcium ion (Ca2+) isa highly versatile intracellular signal messenger regulating many different cellular functions. It is important to design probes with good fluorescence and two-photon (TP) active cross-sections (Φδ) to explore the concentration distribution of Ca2+. In this manuscript, a novel TP fluorescence calcium probe (BAPTAVP) with positive charges, based on the classical Ca2+ indicator of BAPTA (1,2-bis(2-aminophenoxy)-ethane-N,N,N’,N’-tetra acetic acid), and a conjugated polymer (PCBMB) with negative charges were designed and synthesized. The results from transmission electron microscopy (TEM), atomic force microscopy (AFM), dynamic light scattering (DLS), and the zeta potential (ZP) showed that nanoparticles were obtained by the self-assembly of PCBMB and BAPTAVP. Moreover, the fluorescence properties of BAPTAVP were effectively improved by fluorescence resonance energy transfer (FRET) with PCBMB and attenuating the intramolecular charge transfer (ICT) after the addition of Ca2+. The quantum yield and Φδ of PCBMB-BAPTAVP increased by about four and six times in comparison to those of BAPTAVP, respectively. The TP fluorescence imaging experiments indicated that the PCBMB-BAPTAVP system could effectively detect Ca2+ in living cells with high sensitivity.

show abstract

Section: Resultssupporting

confidence: 66%

Enhanced Two-Photon Fluorescence and Fluorescence Imaging of Novel Probe for Calcium Ion by Self-Assembly with Conjugated Polymer

Zhai

Wang

et al. 2019

Polymers

Self Cite

View full text Add to dashboard Cite

show abstract

“…S5), using the Benesi-Hildebrand analysis [38][39][40]. The association constant of DPBT-Hg 2+ was higher than most of reported Hg 2+ fluorescent probes [48][49][50][51].The association constant of DPBT-Cu 2+ was close to the values of other Cu 2+ probes reported in the literature [52][53][54]. DPBT exhibited excellent analytical performance to Hg 2+ and Cu 2+ .…”

Section: Nature Of the Complexationsupporting

confidence: 55%

A simple Schiff base fluorescence probe for highly sensitive and selective detection of Hg2+and Cu2+

Zhang

Gao

Zhang

et al. 2016

Talanta

View full text Add to dashboard Cite

“…Nevertheless, the addition of melamine could distinctly recover the fluorescence of CPNs curve d’ in Figure 5b. In addition, the fluorescence quantum yields ( Ф s) of CPNs in the absence and presence of AuNPs and melamine have been calculated using a solution containing coumarin 307 ( Ф = 0.56, in methanol) standard as the reference according to the equation reported [42]. The values of Ф s were listed in Table 2.…”

Section: Resultsmentioning

confidence: 99%

Highly Sensitive Detection of Melamine Based on the Fluorescence Resonance Energy Transfer between Conjugated Polymer Nanoparticles and Gold Nanoparticles

et al. 2018

Self Cite

View full text Add to dashboard Cite

Adding melamine as additives in food products will lead to many diseases and even death. However, the present techniques of melamine detection require time-consuming steps, complicated procedures and expensive analytical apparatus. The fluorescent assay method was facile and highly sensitive. In this work, a fluorescence resonance energy transfer (FRET) system for melamine detection was constructed based on conjugated polymer nanoparticles (CPNs) and gold nanoparticles (AuNPs). The energy transfer efficiency is up to 82.1%, and the system is highly selective and sensitive to melamine detection with a lower detection limit of 1.7 nmol/L. Moreover, the interaction mechanism was explored. The results showed that the fluorescence of CPNs were firstly quenched by AuNPs, and then restored after adding melamine because of reducing FRET between CPNs and AuNPs. Lastly, the proposed method was carried out for melamine detection in powdered infant formula with satisfactory results.

show abstract

Fluorescent detection and imaging of Hg 2+ using a novel phenanthroline derivative based single- and two-photon excitation

Cited by 11 publications

References 48 publications

Enhanced Two-Photon Fluorescence and Fluorescence Imaging of Novel Probe for Calcium Ion by Self-Assembly with Conjugated Polymer

Enhanced Two-Photon Fluorescence and Fluorescence Imaging of Novel Probe for Calcium Ion by Self-Assembly with Conjugated Polymer

A simple Schiff base fluorescence probe for highly sensitive and selective detection of Hg2+and Cu2+

Highly Sensitive Detection of Melamine Based on the Fluorescence Resonance Energy Transfer between Conjugated Polymer Nanoparticles and Gold Nanoparticles

Contact Info

Product

Resources

About