Article
Chemistry, Physical
Hana Janekova, Jan Gaspar, Anton Gaplovsky, Henrieta Stankovicova
Summary: The research focused on twelve colorimetric anion sensors based on coumarin semicarbazone for selective sensing of fluoride anion, with detection limits ranging from 6.6-8.6 ppm. The sensors demonstrated distinct color changes in the visible light region, making them suitable for naked eye detection of fluoride anion.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Engineering, Environmental
Xialei Lv, Xiaosong Cao, Han Wu, Hong Lin, Fan Ni, Hong Huang, Yang Zou, Chuluo Yang
Summary: This study presents a twisted donor-acceptor (D-A) system by simple conjugation of acridan and aryl halide to construct efficient and ultralong room-temperature phosphorescence (RTP) luminogens, demonstrating high phosphorescence quantum efficiency and long lifetime. This offers rare examples of efficient and long-lived phosphors based on acridan building block, shedding light on the inherent photophysical mechanism of RTP materials and paving a way to design highly promising RTP luminogens.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Analytical
Sha Ding, Yong Xia, Xiaoqi Lin, Aokui Sun, Xianggang Li, Yuejun Liu
Summary: In this study, the sensing process of sensor QP for fluoride anion was investigated using density functional theory and time-dependent density functional theory calculations. The proton transfer process and twisted intramolecular charge transfer of QP were explored, and the fluorescence quenching mechanism and fluorescent response for fluoride anion were fully explored.
Article
Chemistry, Physical
Meng Liu, Songtong Zhang, Guangqi Li, Chong Wang, Bin Li, Meng Li, Yue Wang, Hai Ming, Yuehua Wen, Jingyi Qiu, Junhong Chen, Pengcheng Zhao
Summary: The cross-linked gel polymer electrolyte (GPE) with cellulose acetate (CA) as matrix, poly (ethylene glycol) diacrylate (PEGDA) as cross-linking agent, and layered boron nitride (BN) as reinforcement was prepared for lithium-ion batteries (LIBs). By uniformly dispersing BN filler in the GPE and interacting with the polymer matrix and anion in the electrolyte, the GPE demonstrated high ionic conductivity, excellent electrochemical stability, and good thermal stability. This work highlights the importance of the interaction between GPEs and inorganic fillers in designing new polymer electrolyte systems.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Organic
Yoichi Kitazawa, Takuya Kochi, Fumitoshi Kakiuchi
Summary: We present a study on the ortho-C-H alkenylation of aromatic ketones with unsymmetric internal alkynes catalyzed by an iron phosphine complex, Fe(PMe3)4. The addition of a catalytic amount of PtBu3 as an additive was shown to enhance the product yields. This alkenylation reaction displays regio- and stereoselectivity, yielding the corresponding styrene derivatives.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Brendan L. Murphy, Francois P. Gabbai
Summary: This article introduces the research on the use of antimony compounds as new platforms for anion capture, sensing, and transport, emphasizing the excellent Lewis acidic properties of antimony and its potential in supramolecular chemistry and catalysis. It also mentions the recent advances in anion sensing in aqueous media and anion binding catalysis and anion transport across phospholipid membranes.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Organic
Yoichi Kitazawa, Takuya Kochi, Fumitoshi Kakiuchi
Summary: In this study, an ortho-C-H alkenylation of aromatic ketones with unsymmetric internal alkynes was achieved using an iron phosphine complex, Fe(PMe3)4, as the catalyst. The addition of a catalytic amount of PtBu3 improved the yield of the products. The alkenylation reaction exhibited regio- and stereoselectivity, leading to the formation of corresponding styrene derivatives.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
A. Kosiha, M. Devendiran, K. Krishna Kumar, R. A. Kalaivani
Summary: This study reports on the selective sensing of fluoride ion using a specific ligand and its metal complexes, and investigates the morphology and anion-sensing properties of the compounds using microscopic and spectroscopic techniques. H-1 NMR titration and quantum chemical calculations were conducted to understand the interaction between the chemosensors and fluoride ions, providing insights into the mechanism of their interaction.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Spectroscopy
Yong Xia, Mengyao Li, Aixiang Xu, Zhe Zhang, Aokui Sun, Sha Ding, Yuejun Liu
Summary: The interaction between 1-Phenyl-3-(pyren-1-yl) urea (LH) and fluoride anion (F-) has been studied, showing that the hydrogen bond in the complex LH-F is greatly enhanced in the electronically excited state, facilitating nonradiative deactivation and providing evidence for the sensing mechanism of LH for F-.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Multidisciplinary
Lijun Lu, Chunpeng Jiang, Guosheng Hu, Jingquan Liu, Bin Yang
Summary: Noncontact human-machine interaction is highly desired due to issues with contact sensors, especially during pandemics. A flexible high-sensitivity humidity sensor and array utilizing multilayer graphene in electrospun polyamide has been developed for noncontact asthma detection and medicine delivery for bedridden patients. The development of such technology could lead to a new era of smart electronics with noncontact interaction.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zhifeng Deng, Cheng Wang, Junqiang Li, Meng Zheng
Summary: This study successfully developed a highly sensitive colorimetric sensor for fluoride ions, which can detect fluoride concentrations with the naked eye, providing new possibilities for fluoride ion detection research.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
Ishana Kathuria, Prachi Sharma, Satish Kumar
Summary: Rapid detection of hazardous ions has been a significant focus in recent decades for its utility in protecting the environment. This study designed and synthesized a substituted merocyanine salt with a ferrocene segment to create a probe with colorimetric and electrochemical properties. The probe was able to detect toxic ions in aqueous media through UV-vis, fluorescence spectroscopy, and cyclic voltammetry, with acceptable limit of detection values observed. The interaction of the probe with cyanide ions was characterized using NMR and resulted in the formation of C-C bonds. The calculated limit of detection values were 2.28 μM using UV-visible spectroscopy, 1.48 μM using fluorescence spectroscopy, and 0.61 μM using cyclic voltammetry.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Materials Science, Paper & Wood
Ryota Matsuba, Hiroyuki Kubota, Nobuyuki Matubayasi
Summary: An all-atom analysis of cellulose acetate was conducted using molecular dynamics simulation, examining the intermolecular interactions, energetics of dissolution, and the underlying structures. The results showed that DS strongly influenced the hydrogen bonding and packing of cellulose acetate, with dissolution being more favorable for H2O compared to CO2 and CH4. The electrostatic component was found to play a crucial role in the DS dependence of dissolution free energy for H2O, as well as the difference in affinity between CO2 and CH4.
Article
Chemistry, Physical
Steve Scheiner
Summary: The tetrel bond utilizes elements from the C, Si, Ge, Sn, Pb family as electron acceptors in interactions with a partner Lewis base. The geometric deformation within the tetrel-bearing Lewis acid monomer is an important issue affecting the strength of the bond. While C is a reluctant participant in tetrel bonding due to its low polarizability, its significance in organic and biochemistry warrants a thorough understanding of its potential in this regard.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Analytical
Pedro E. Martin Varguez, Jean-Manuel Raimundo
Summary: A novel phenothiazine-based chemical sensor for naked eye detection of cyanide was synthesized and characterized in this study. The sensor demonstrated high specificity for cyanide and acetate with low LODs, and a paper test strip was prepared for qualitative naked eye cyanide sensing.