Materials Advances, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
A ring-fluorinated heptamethine cyanine dye was synthesised. The fluorine atoms on the aromatic ring of not only improved photostability but also showed vapochromism to low nucleophilic ammonia.
Language: Английский
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150917 - 150917
Published: April 1, 2024
Language: Английский
Citations
18
Crystal Growth & Design, Journal Year: 2024, Volume and Issue: 24(8), P. 3299 - 3308
Published: March 30, 2024
Multistimuli-responsive crystalline materials have a wide range of application prospects. However, development new multistimuli-responsive remains full challenge. In this work, taking symmetrical modified extended viologen (ExV)-based carboxylate 1,1-bis(4-carboxybenzyl)-2,5-bipyridyl thiophene dichloride (H2L·Cl2) as ligand and terephthalic acid (PTA) an auxiliary ligand, 3D MOF material {[Cd2(L)(PTA)2]·3H2O}n (Cd-MOF-1) was constructed successfully. Cd-MOF-1 shows distinctive photochromic electrochromic properties, which can be attributed to the formation radicals induced by electron transfer (ET) under external photo/electricity stimuli. Furthermore, title compound also displays photomodulable fluorescence sensitive distinguishable color response propylamine (PA) vapor relative other amine molecules. The selectivity toward volatile vapors may caused differences in size or propelling capacity amines. addition, character makes it suitable for ink-free erasable printing. This excellent more potential values areas photoelectric devices, light printing, detection, etc. It is helpful us further explore develop MOF-based multistimuli responsive ExV derivatives.
Language: Английский
Citations
15
Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 518, P. 216064 - 216064
Published: July 5, 2024
Language: Английский
Citations
14
Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(13), P. 5852 - 5864
Published: March 20, 2024
Four kinds of polyoxometalate (POM)-viologen compounds were synthesized by hydrothermal method, namely (1–cby)2·[H2(SiMo12O40)]·2H2O (1), (1–cby)2·[H2(SiW12O40)]·2H2O (2), (1–cby)2·(1,1′–bcby)2·{H4[Co4(H2O)2(PW9O34)2]}·12H2O (3), (1–cby)·(1,1′–bcby)·[H(α–PW11O39)CoII(1–cby)]·8H2O (4) (1–cby·Br = 1–Cyclopropylmethyl–[4,4′]bipyridinyl–1–ium bromide, 1,1′–bcby·Br 1,1′–Bis-cyclopropylmethyl–[4,4′]bipyridinyl–1–ium bromide). These four POM-viologen exhibit one-dimensional supramolecular network structures. Especially, compound 3 contains a rare sandwich POM subunit {Co4(H2O)2(PW9O34)2}10–. can be used as color-changing materials, and they all noticeable color changes upon exposure to light, heat, electricity. The discoloration mechanism involves viologen derivatives with electron-deficient properties accepting electrons from electron-rich under external stimulation, leading the formation free radicals. Among them, 1 2 also have good for ink-free erasable printing, double anticounterfeiting, ultraviolet detector because their rapid response (UV) light. In addition, 1–4 show different in detection volatile amines.
Language: Английский
Citations
13
Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(11), P. 5192 - 5201
Published: Jan. 1, 2024
A new type of POM–metaloxoviologen hybrid with a 3D trinuclear Zn( ii )–viologen framework encapsulating POMs exhibits multiple stimulus-responsive behaviors.
Language: Английский
Citations
10
Chemistry - A European Journal, Journal Year: 2023, Volume and Issue: 29(62)
Published: Aug. 16, 2023
Abstract Inkless and erasable printing (IEP) based on chromic materials holds great promise to alleviate environmental sustainable problems. Metal–organic polymers (MOPs) are bright platforms for constructing IEP materials. However, it is still challenging design target MOPs with excellent specific functions rationally due the intricate component‐structure‐property relationships. Herein, an effective strategy was proposed rational IEP‐MOP The stimuli‐responsive viologen moiety introduced into construction of give potential behaviors two different coordination models (i. e. bilateral model, M 1 ; unilateral coordinated 2 ) same ligand were designed. Aided by theoretical calculations, model recommended secondarily as a more suitable system Along this line, representative viologen‐Zn II synthesized successfully. Experiments exhibit that does have quicker stimuli response, stronger color contrast longer radical lifetime compared . Significantly, obtained 1‐IEP media brightly inherits characteristics flexibility paper at time, which achieves most daily requirements, well enough resolution durability be used in identification smart device.
Language: Английский
Citations
16
Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(35), P. 16274 - 16283
Published: Aug. 18, 2024
Different types of electron transfers (ETs) underlie the versatile use various solid viologen-derived compounds, which is still insufficiently understood and difficult to control. Here, we demonstrate an effective strategy for modulating key ET process in crystalline metalloviologen compounds (MVCs). By adjusting coordinated transition metal ions bearing different electronic structures (e.g., d5, d7, d10), three MVCs (i.e., Mn-1, Co-2, Cd-3) with highly consistent coordination environments have been synthesized successfully. Surprisingly, whether photochromism (energy-induced mechanism) or specific analyte recognition (molecule-induced mechanism), compound Cd-3 exhibits obvious photochromic behavior differential dimethylamine detection. Combined detailed structural analysis theoretical calculations, such unique ion-dependent properties, were correlated fine modulation density bipyridinium cores by ions. Additionally, thanks delicate vapor, a convenient test strip Cd-3-PAN was prepared as sensitive biogenic amine sensor evaluating real-time freshness seafood.
Language: Английский
Citations
6
Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 510, P. 215818 - 215818
Published: April 6, 2024
Language: Английский
Citations
5
Nano Letters, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 20, 2025
Integrating the color-tuning ability of natural organisms with memory functions into a single device is crucial for developing biomimetic intelligent systems. Despite significant efforts, gap remains between existing "passive and integrated" tuning methods "active independent" strategies observed in organisms. Here, we propose multifunctional memristor combining programmable color modulation brain-inspired functions, fabricated using polyoxometalates, H4PMo11VO40. The exhibits adaptive, multidimensional, synchronized responses to electrical light stimuli. Inspired by dual regulatory mechanisms chameleons, simulates their response, learning, adaptability, communication abilities. An array replicates dynamic transformations chameleon skin under emotional environmental conditions, exhibiting precise regulation responsive capabilities. A neural network establishes occlusion region segmentation system 97.1% recognition accuracy. Iterative fine-tuning via low-amplitude voltage showcases recognition, feedback, self-regulation functions. Our work advances multifunction systems providing insights integrating adaptive functionalities.
Language: Английский
Citations
0
Inorganica Chimica Acta, Journal Year: 2025, Volume and Issue: unknown, P. 122747 - 122747
Published: May 1, 2025
Language: Английский
Citations
0