2-Pyridine-1H-benzo[d]imidazole based conjugated polymers: A selective fluorescent chemosensor for Ni2+ or Ag+ depending on the molecular linkage sites

Xiang, Gang; Wang, Lingyun; Cui, Wei; An, Xiaoning; Zhou, Lixia; Li, Lin; Cao, Derong

doi:10.1016/j.snb.2014.02.047

Cited by 14 publications

(11 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the past, several Ag + ions’ probes have been synthesised [ 11 , 12 , 15 , 22 , 32 ]. Nevertheless, these syntheses are multistep processes, and the production is expensive, as well as time consuming.…”

Section: Resultsmentioning

confidence: 99%

“…H 2 L∙2Br [ 11 ] was compared with a lower amount of interference, and determination of Ag + is done in 100% organic solution; therefore, this fluorescent chemodosimeter is not a candidate for measuring Ag + ions in real-life applications. Since 100% organic solvent is used for detection of Ag + , 2-Pyridine- 1H -benzo[ d ]imidazole based conjugated polymer [ 15 ] and bis(isatin hydrazonyl) calix[4]arene based dual receptor [ 18 ] are also inappropriate probes for real-time application. A phenazine derivate [ 17 ] in addition to using a partially organic solvent (DMSO/H 2 O (6:4)), this probe was not tested on Hg 2+ as interference, though it is well known that Ag + sensor probes are usually also sensitive to Hg + ions [ 40 ].…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, they are not well suited for rapid on-site detection of Ag + ions. Many probe-based sensors intended for on-site detection using organic chromophores, small fluorescent organic molecules [ 10 , 11 , 12 ], Quantum Dots (QDs) [ 13 , 14 ], conjugated polymers [ 15 ], and DNA-zymes [ 16 ] have been developed for fluorescent, colorimetric [ 17 , 18 , 19 ], and electrochemical detection of Ag + [ 20 , 21 ]. However, some drawbacks still exist, such as poor aqueous solubility [ 18 , 22 ], bad stability, low sensitivity, large physical size, complicated synthesis procedures, high toxicity, and cross-sensitivity toward other metal ions, especially to Hg 2+ [ 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design and Investigation of Optical Properties of N-(Rhodamine-B)-Lactam-Ethylenediamine (RhB-EDA) Fluorescent Probe

Soršak

Valh

Urek

et al. 2018

Sensors

View full text Add to dashboard Cite

This study presents chemical modification of a Rhodamine B (RhB) sensor probe by ethylenediamine (EDA), and investigation of its spectral as well as sensor properties to the various metals. The synthesised N-(Rhodamine-B)-lactam-ethylenediamine (RhB-EDA) fluorescent probe shows interesting optical sensor properties, and high sensitivity and selectivity to Ag+ ions among all the tested metal ions (K+, Mg2+, Cu2+, Ni2+, Fe2+, Pb2+, Na+, Mn2+, Li+, Al3+, Co2+, Hg2+, Sr2+, Ca2+, Ag+, Cd2+ and Zn2+), while the well-known Rhodamine B (RhB) fluorescent probe shows much less sensitivity to Ag+ ions, but high sensitivity to Fe2+ ions. The novel fluorescent sensor probe RhB-EDA has the capabilities to sense Ag+ ions up to µM ranges by using the fluorescence quenching approach. The probe displayed a dynamic response to Ag+ in the range of 0.43 × 10−3–10−6 M with a detection limit of 0.1 μM. The sensing system of an RhB-EDA novel fluorescent probe was optimised according to the spectral properties, effect of pH and buffer, photostability, incubation time, sensitivity, and selectivity. Since all the spectral and sensing properties were tested in green aqueous media, although many other similar sensor systems rely on organic solvent solutions, the RhB-EDA sensing probe may be a good candidate for measuring Ag+ ions in real-life applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design and Investigation of Optical Properties of N-(Rhodamine-B)-Lactam-Ethylenediamine (RhB-EDA) Fluorescent Probe

Soršak

Valh

Urek

et al. 2018

Sensors

View full text Add to dashboard Cite

show abstract

“…As indicated in Table 1, the number-average molecular weight (M n ) and polydispersity index (PDI) of the PC2Br were 6.05 × 10 3 g mol −1 and 1.12, respectively. Figure S3a presents the 1 H NMR spectrum of the PC2Br, which was recorded in THF-d 8 . The degree of polymerization (DP) of the PC2Br was calculated based on the integral ratio of protons H a (at approximately 7.99-8.25 ppm) derived from the carbazole monomer, to methylene protons H c in the CTP agent (at 2.05 ppm).…”

Section: Synthesis and Thermal Properties Of Polymersmentioning

confidence: 99%

“…The PCaT was successfully synthesized from PC2Br and tpy-based monomer 4 through a palladium-mediated Heck coupling reaction (Scheme 2). Figure S3b presents the 1 H NMR spectrum of the PCaT in THF-d 8 . The molar ratio of carbazole to tpy units was calculated to be 15.6:1 by comparing the integrated peak areas of carbazole protons (H c : 4.65-5.50 ppm) to those of terpyridyl protons (H a : 8.53-8.82 ppm) in monomer 4.…”

Section: Synthesis and Thermal Properties Of Polymersmentioning

confidence: 99%

Synthesis, Chemosensory Properties, and Self-Assembly of Terpyridine-Containing Conjugated Polycarbazole through RAFT Polymerization and Heck Coupling Reaction

Yang

Chien

et al. 2017

Polymers

View full text Add to dashboard Cite

Abstract:We report the responsive fluorescence chemosensory phenomena of a carbazolefunctionalized crosslinked polymer (PCaT) with pendent terpyridine (tpy) groups as receptors of metal ions. The polymer was synthesized using Heck polymerization between 3,6-dibromide groups in a carbazole-based polymer (PC2Br) and divinyl tpy monomer. The effects of the polymeric structure on the optical and chemosensory properties of the PCaT were compared with those of a carbazole-tpy alternating conjugated polymer (PCT). Photoluminescence titrations demonstrated that the PCaT and PCT had the high sensing ability toward Fe 3+ ions, with Stern-Volmer constants of 8.10 × 10 4 and 6.68 × 10 4 M −1 , respectively. The limit of detection (LOD) toward Fe 3+ of the PCaT and PCT was estimated to be 1.31 × 10 −6 and 1.81 × 10 −6 M, respectively, and the superior LOD of the PCaT was ascribed to its lowly crosslinked structure. The fluorescence of the solutions of these polymers that were quenched by Fe 3+ ions recovered when trace CN − anions were added because of the high stability constant of the CN − -Fe 3+ complex. Micellar aggregates with a mean diameter of approximately 239.5 nm were formed by dissolving the PCaT in tetrahydrofuran (THF) solution. Our results suggest that the PCaT is a promising material for chemosensory applications.

show abstract

Rational design of signal amplifying fluorescent conjugated polymers for environmental monitoring applications: Recent advances and perspectives

Hussain,

Zhu,

Yue

et al. 2024

Coordination Chemistry Reviews

View full text Add to dashboard Cite

2-Pyridine-1H-benzo[d]imidazole based conjugated polymers: A selective fluorescent chemosensor for Ni2+ or Ag+ depending on the molecular linkage sites

Cited by 14 publications

References 36 publications

Design and Investigation of Optical Properties of N-(Rhodamine-B)-Lactam-Ethylenediamine (RhB-EDA) Fluorescent Probe

Design and Investigation of Optical Properties of N-(Rhodamine-B)-Lactam-Ethylenediamine (RhB-EDA) Fluorescent Probe

Synthesis, Chemosensory Properties, and Self-Assembly of Terpyridine-Containing Conjugated Polycarbazole through RAFT Polymerization and Heck Coupling Reaction

Rational design of signal amplifying fluorescent conjugated polymers for environmental monitoring applications: Recent advances and perspectives

Contact Info

Product

Resources

About