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

Hussain, Sameer; Zhu, Chunhong; Yue, Ziyu; Hao, Yi; Gao, Ruixia; Wei, Jinhua

doi:10.1016/j.ccr.2023.215480

Cited by 9 publications

(4 citation statements)

References 185 publications

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“…The incessant overlapping of CP’s π-orbitals generates high electronic conjugated networks, resulting in the development of so-called “molecular wires”. This “molecular wire” structure of CPs makes strong selectivity toward aliphatic and aromatic nitro explosives. , Since electron-rich aromatic ligands containing CPs benefit the easy photoexcited electron transportation toward the electron-deficient analyte molecules during the interaction time …”

Section: Introductionmentioning

confidence: 99%

“…This "molecular wire" structure of CPs makes strong selectivity toward aliphatic and aromatic nitro explosives. 48,49 Since electron-rich aromatic ligands containing CPs benefit the easy photoexcited electron transportation toward the electrondeficient analyte molecules during the interaction time. 50 In our continuous effort toward the design and subsequent development of potent luminescent coordination polymers in the field of explosive material detection, herein we report two new Cd(II)-based CPs (CPCd-1 and CPCd-2) using heteroaldazine ligands and thiocyanate and dicyanamide as bridging ligands.…”

Section: ■ Introductionmentioning

confidence: 99%

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First Crystallographic Evidence of Polarity-Assisted Pseudohalides Controllable Heteroaldazine-Based Coordination Polymers: A New Tributary in Low Level Recognition of Explosive from Real-Day Matrices

Chattopadhyay,

Ghorai,

Datta

et al. 2024

Crystal Growth & Design

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Polarity-assisting pseudohalide-controlled self-assembly of coordination polymers (CPs) is of immense significance for structural tunability and is quite necessary for exploration of the links between structure and properties. Herein, we have synthesized two polarity-assisting pseudohalide-controlled CPs, CPCd-1 and CPCd-2at room temperature and systematically characterized through single-crystal X-ray diffraction (SC-XRD) methodology. Interestingly, strong and continuous π•••π intermolecular interactions influence both CPs to ensure high luminescence properties in the solvent medium and in the solid phase. Further, these luminous CPs have been utilized for discriminating recognition of the lethal explosive 2,4,6trinitrophenol (TNP). Notably, CPCd-2 shows a lower detection limit (193 ppb) toward TNP detection than CPCd-1 (the detection limit is 401 ppb), which is also confirmed by the theoretical scenario. In addition, the sensing mechanism is established via PET-ICT-π•••π interaction pathways. Both CPs have numerous practical applications and have been ascertained as innovative ones in environmental domains. This type of pseudohalide-controlled CPs with quinoline-napthaldehyde heteroaldazine-based moieties is scanty in the literature that can detect TNP entirely from the aqueous phase.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

First Crystallographic Evidence of Polarity-Assisted Pseudohalides Controllable Heteroaldazine-Based Coordination Polymers: A New Tributary in Low Level Recognition of Explosive from Real-Day Matrices

Chattopadhyay,

Ghorai,

Datta

et al. 2024

Crystal Growth & Design

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“…40,41 Our research group and others have elegantly highlighted the superiority of CPs in fluorescence sensing over small molecules-based probes. 40,42,43 Recently, Xie and coworkers 44 reported the preparation of imidazolium-based hyper-cross-linked mesoporous poly(ionic liquid)s (PVIm-6-SCD) with a high bromide anion content. PVIm-6-SCD displayed an impressively high adsorption capacity of 236.8 mg g −1 for Cr(VI) via an anion-exchange process, which remains as one of the best reported values so far.…”

mentioning

confidence: 99%

“…Conjugated polymers (CPs) containing a long backbone of alternate π-bonds are regarded as a pioneering class of metal-free fluorescent material in the field of sensing due to amplified signal response obtained via the unique “molecular-wire effect”. , Our research group and others have elegantly highlighted the superiority of CPs in fluorescence sensing over small molecules-based probes. ,, Recently, Xie and co-workers reported the preparation of imidazolium-based hyper-cross-linked mesoporous poly(ionic liquid)s (PVIm-6-SCD) with a high bromide anion content. PVIm-6-SCD displayed an impressively high adsorption capacity of 236.8 mg g –1 for Cr(VI) via an anion-exchange process, which remains as one of the best reported values so far.…”

mentioning

confidence: 99%

Imidazolium-Functionalized Conjugated Polymer for On-Site Visual and Ultrasensitive Detection of Toxic Hexavalent Chromium

Li,

Shen,

Hussain

et al. 2024

Anal. Chem.

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Hexavalent chromium [Cr(VI)] is considered a serious environmental pollutant that possesses a hazardous effect on humans even at low concentrations. Thus, the development of a bifunctional material for ultratrace-selective detection and effective elimination of Cr(VI) from the environment remains highly desirable and scarcely reported. In this work, we explore an imidazolium-appended polyfluorene derivative PF-DBT-Im as a highly sensitive/selective optical probe and a smart adsorbent for Cr(VI) ions with an ultralow detection limit of 1.77 nM and removal efficiency up to 93.7%. In an aqueous medium, PF-DBT-Im displays obvious transformation in its emission color from blue to magenta on exclusively introducing Cr(VI), facilitating naked-eye colorimetric detection. Consequently, a portable sensory device integrated with a smartphone is fabricated for realizing real-time and on-site visual detection of Cr(VI). Besides, the imidazolium groups attached onto side chains of PF-DBT-Im are found to be highly beneficial for achieving selective and efficient elimination of Cr(VI) with capacity as high as 128.71 mg g–1. More interestingly, PF-DBT-Im could be easily regenerated following treatment with KBr and can be recycled at least five times in a row. The main factor behind ultrasensitive response and excellent removal efficiency is found to be anion-exchange-induced formation of a unique ground-state complex between PF-DBT-Im and Cr(VI), as evident by FT-IR, XPS, and simulation studies. Thus, taking advantage of the excellent signal amplification property and rich ion-exchange sites, a dual-functional-conjugated polymer PF-DBT-Im is presented for the concurrent recognition and elimination of Cr(VI) ions proficiently and promptly with great prospects in environmental monitoring and water decontamination.

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Organic probes for three‐photon fluorescence imaging in NIR‐II window: Design, applications, and perspectives

Yang,

Cen,

Kan

et al. 2024

Interdisciplinary Materials

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Three‐photon fluorescence (3PF) imaging is an emerging technology for imaging deep‐tissue submicroscopic structures by nonlinearly redshifting the excitation wavelength to the second near‐infrared (NIR‐II) window; thus, this approach has great advantages, including deep penetration depth, good spatial resolution, low background, and a high signal‐to‐noise ratio. 3PF imaging has been demonstrated to be a powerful tool for noninvasively visualizing all kinds of deep tissues in recent years. Benefiting from excellent biosecurity and structural controllability, the development of organic 3PF probes is highly important for advancing 3PF imaging in vivo. However, there is no summary of the generalizability of the design and recent progress in organic 3PF probes. Herein, this review introduces the fundamental principle of 3PF imaging and highlights the advantages of 3PF bioimaging. The molecular design of these organic 3PF probes is also summarized based on relative optical indices. Furthermore, different 3PF imaging application scenarios are listed in detail. In the end, the main challenges, significance of probe exploitation, and prospective orientation of organic probes for precise 3PF imaging are proposed and discussed for promoting future applications and clinical translation.

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

Cited by 9 publications

References 185 publications

First Crystallographic Evidence of Polarity-Assisted Pseudohalides Controllable Heteroaldazine-Based Coordination Polymers: A New Tributary in Low Level Recognition of Explosive from Real-Day Matrices

First Crystallographic Evidence of Polarity-Assisted Pseudohalides Controllable Heteroaldazine-Based Coordination Polymers: A New Tributary in Low Level Recognition of Explosive from Real-Day Matrices

Imidazolium-Functionalized Conjugated Polymer for On-Site Visual and Ultrasensitive Detection of Toxic Hexavalent Chromium

Organic probes for three‐photon fluorescence imaging in NIR‐II window: Design, applications, and perspectives

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