Chromatic response of polydiacetylene vesicle induced by the permeation of methotrexate

2019

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In this study, we estimated the color-transition behavior of a polydiacetylene (PDA) vesicle system for butylamine detection in an EtOH-water mixed solvent. The effect of the EtOH concentration in the vesicle system on the color transition of PDA was measured. 10,12-Pentacosadiynoic acid (PCDA) was used to form the PDA vesicle by sonication and photopolymerization. The results show that the vesicle formation of PCDA was accomplished with up to 13 wt % EtOH. As the concentration of EtOH increased from pure water (0 wt %) to 13 wt %, a larger size vesicle was formed, with the color transition occurring at a lower temperature and with a lower amount of butylamine. The color of the PDA vesicle solution started to change at 3 mM butylamine with pure water as the solvent and at 2.5 mM butylamine with 10 wt % EtOH.

Section: Introductionmentioning

confidence: 99%

Effect of ethanol on the color transition of the polydiacetylene vesicle of 10,12‐pentacosadiynoic acid for butylamine detection

2019

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“…The weight of one layer was measured using a quartz‐crystal microbalance (QCM) (USI System, Fukuoka, Japan) and quartz resonators (9 MHz) (USI System, Fukuoka, Japan). The N ‐(2‐aminoethyl)pentacosa‐10,12‐diynamide (AEPCDA) was synthesized by using our previously reported method . NMR data: 0.89 (t, 3H), 1.27 (s, 26H), 1.44–1.51 (m, 6H), 2.12 (t, 2H), 2.24 (t, 4H), 2.82 (m, 2H), 3.38 (m, 2H), 4.46 (s, 2H), 6.44 (s, 1H).…”

Section: Methodsmentioning

confidence: 99%

“…The N-(2-aminoethyl)pentacosa-10,12-diynamide (AEPCDA) was synthesized by using our previously reported method. 34…”

Section: Methodsmentioning

confidence: 99%

Gas‐sensor fabrication by a layer‐by‐layer technique using polydiacetylene

Kim

et al. 2017

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In order to increase the sensitivity of a polydiacetylene (PDA) sensor, PDA, and poly(sodium 4‐styrene‐sulfonate) (PSS) were alternately stacked to form a layer‐by‐layer (LBL) film on the quartz. In this study, N‐(2‐aminoethyl)pentacosa‐10,12‐diynamide (AEPCDA) was used as a constituent of the PDA and n‐butylamine was used as a target compound. The formed‐film sensor showed higher sensitivity than the vesicle solution. There was a large difference in sensitivity depending on the method used to form the LBL film. Unlike the vesicle solution state, the formed‐film sensor exhibited excellent reversibility in the color change caused by heat. The LBL film formed worked very well as a sensor that detects the actual gas, n‐butyl amine, showing its potential for practical applications. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44997.

“…[26][27][28] In our research group, diverse PDA sensor systems using several PCDA derivatives have been reported. [29][30][31][32][33][34][35][36] Among them, two color-changeable systems by the permeation of target compound were reported. [33,34] In the first report, [33] a PCDA derivative with an amine group at the end of the compound was synthesized and the sensing system was formed with this compound and dioctadecyldimethylammonium chloride (DODMAC).…”

Section: Introductionmentioning

confidence: 99%

Chromatic response of cationic polydiacetylene vesicles induced by permeation of target compound

2020

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A polydiacetylene vesicle was formed by sonication and UV irradiation of the diacetylene DPAI‐bis‐PCDA, which has quaternary ammonium head group. A color‐changeable detection system during permeation of the target compound from inside to outside the vesicle was prepared using this vesicle. A mixed vesicle system with DPAI‐bis‐PCDA and dioctadecyldimethylammonium chloride (DODMAC) was used in this study. DODMAC was necessary to exhibit sufficient color change. Methotrexate and neomycin were used as target compounds, and the optimum ratio of DPAI‐bis‐PCDA to DODMAC for sufficient color change was determined. When MTX was used as the target compound, 6:4 was the optimum ratio, whereas it was 7:3 for neomycin.