Coumarin Thiourea-Based Fluorescent Turn-on Hg2+ Probe That Can Be Utilized in a Broad pH Range 1–11

Pan, Zhixiu; Xu, Zhenxiang; Chen, Jie; Hu, Luping; Li, Hongqi; Zhang, Xin; Wang, Mengxuan; Zhang, Jian

doi:10.1007/s10895-020-02517-y

Cited by 19 publications

(8 citation statements)

References 63 publications

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“…Recognition mechanism of SC39 toward Hg 2 + . [106] and sodium ascorbate in THF was kept for 48 hours at 20 °C, and the formed precipitate were filtered, washed with distilled water and dried to yield SC41 with 83% yield (Scheme 53).…”

Section: Mercury Ions (Hg 2 + )mentioning

confidence: 99%

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Coumarin‐based Chemosensors for Metal Ions Detection

et al. 2022

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Coumarins, due to their intense and persistent emission of fluorescence, structural flexibility, and excellent biocompatibility, have become a popular choice in developing new fluorescent chemosensors. Coumarins have long been used for sensing anions, cations, chemically reactive nitrogen, oxygen, sulfur-containing species, and small molecules. They have also been shown to have applicability in imaging, biology, and medical research. Due to the widespread use and excellent biological activity, hundreds of such coumarin motifs have either been isolated from nature or synthesized in a laboratory. This review covers all the developments pertaining to the synthesis and use of coumarin for sensing a variety of metal ions (alkali, alkaline earth, transition, heavy, and noble metal ions). This comprehensive review includes an overview of the coumarin-based chemosensor's pH limit, detection limit, and binding mode. A brief explanation of the stoichiometric ratio between metal and chemosensor moiety and the applicability of each chemosensor is also given.

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Section: Mercury Ions (Hg 2 + )mentioning

confidence: 99%

“…[ [104][105][106][107][108][109][110][111][112][113][114][115][116][117][118][119][120][121][122][123] 9.…”

Section: Sc37-sc64unclassified

Coumarin‐based Chemosensors for Metal Ions Detection

et al. 2022

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“…In addition, probe 68 was applied for the detection of hydrazine. Zhixiu et al [97] synthesized a coumarin based sensor 69 (Figure 23) with the conjugation of thiourea for turn-on detection of Hg 2+ in EtOH/H 2 O (2:8, v/v) over a broad pH range of 1-11. Addition of Hg 2+ to the sensor 69 solution induced a hypsochromic shift of the UV-vis absorption band at 360 nm to 340 nm.…”

Section: Reaction-based Chemosensorsmentioning

confidence: 99%

Mercury Toxicity and Detection Using Chromo-Fluorogenic Chemosensors

2021

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Mercury (Hg), this non-essential heavy metal released from both industrial and natural sources entered into living bodies, and cause grievous detrimental effects to the human health and ecosystem. The monitoring of Hg2+ excessive accumulation can be beneficial to fight against the risk associated with mercury toxicity to living systems. Therefore, there is an emergent need of novel and facile analytical approaches for the monitoring of mercury levels in various environmental, industrial, and biological samples. The chromo-fluorogenic chemosensors possess the attractive analytical parameters of low-cost, enhanced detection ability with high sensitivity, simplicity, rapid on-site monitoring ability, etc. This review was narrated to summarize the mercuric ion selective chromo-fluorogenic chemosensors reported in the year 2020. The design of sensors, mechanisms, fluorophores used, analytical performance, etc. are summarized and discussed.

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“…For example, copper, mercury, cadmium and other toxic heavy metals can be transformed into soluble cations in water and soil, which are directly or indirectly absorbed by the human body through the food chain and other channels, threatening human health [1][2][3] . Especially for Hg 2+ , it is a highly toxic substance due to which can be absorbed by the human body through the skin, digestive system, and respiratory system, and can accumulate in most tissues and organs of the human body [4][5][6][7] . Fluorescent chemosensor is a sensing test method that has developed rapidly in recent years and used in the identi cation and detection of analytes such as cations, anions, and neutral molecules [8][9] .…”

Section: Introductionmentioning

confidence: 99%

A highly selective Hg2+ fluorescent chemosensor based on photochromic diarylethene with quinoline unit

Mao

Ding

et al. 2022

Preprint

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A novel diarylethene-based fluorescent chemosensor containing a quinoline unit (1o) had been designed and synthesized. 1o display good photochromic ability and fluorescent switch property by alternately irradiating UV/vis light. The chemosensor showed high “Turn-off” fluorescent selectivity for Hg2+ by competitive tests of the fluorescence reaction in the presence other ions in acetonitrile solution. The stoichiometry between the compound 1o and Hg2+ was 1:1 by Job’s plot curve and HRMS analysis. In addition, the LOD for Hg2+ was calculated as 60 nM. The fluorescence emission can be back to the “Turn-on” state by adding EDTA. Based on these facts, a molecular logic gate that including four input signals (UV/vis and Hg2+/EDTA) and one output signal (fluorescent intensity at 491 nm) was designed.

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Coumarin Thiourea-Based Fluorescent Turn-on Hg2+ Probe That Can Be Utilized in a Broad pH Range 1–11

Cited by 19 publications

References 63 publications

Coumarin‐based Chemosensors for Metal Ions Detection

Coumarin‐based Chemosensors for Metal Ions Detection

Mercury Toxicity and Detection Using Chromo-Fluorogenic Chemosensors

A highly selective Hg2+ fluorescent chemosensor based on photochromic diarylethene with quinoline unit

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