Uncovering Integrated Dual-State ESIPT-Conductivity, Redox-Capacity, and Opto-Electronic Responses Toward Hg(II)/ Cr(III) of Aliphatic Fluorescent Polymers.

IF 4.2 3区 化学 Q2 POLYMER SCIENCE Macromolecular Rapid Communications Pub Date : 2024-10-26 DOI:10.1002/marc.202400677
Md Hussain Sanfui, Nadira Hassan, Shrestha Roy, Deepak Chowdhury, Preetam Nandy, Mincheol Chang, Mostafizur Rahaman, Narendra Nath Ghosh, Swapan Majumdar, Pijush Kanti Chattopadhyay, Dilip K Maiti, Nayan Ranjan Singha
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Abstract

Excited-state intramolecular proton transfer (ESIPT)-associated dual-state emissive aliphatic dual-light emitting conducting polymers (DLECPs) having oxidation-reduction capacities are prepared polymerizing 2-acrylamido-2-methylpropane-1-sulfonic acid, methacrylic acid, and 2-methyl-3-(N-(2-methyl-1-sulfopropan-2-yl)acrylamido)propanoic acid monomers. Of as-synthesized DLECPs, nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopies, fluorescent enhancements (I/I0), and computational investigation indicate intriguing photophysical features in DLECP3 (optimum composition). In DLECP3, ─CONH─, ─CON<, and ─COOH subluminophores are recognized by density-functional theory (DFT)/time-dependent-DFT calculations and experimental investigations. ESIPT-associated dual-state emission/conductivity, aggregation-enhanced emissions, selective opto-electronic responses toward Hg(II)/Cr(III) at 437/574 nm, and redox properties of DLECP3 are supported by solid-state/solution spectroscopies, time-correlated single photon counting (TCSPC) measurements, dual-state excitation dependent emissions, microscopic images, electrochemical measurements, and DFT calculations. Here, preferential interaction of Hg(II)/Cr(III) with DLECP3 (amide)/DLECP3 (imidol) and reduction/oxidation of Hg(II)/Cr(III) to Hg(I)/Cr(VI) are substantiated by UV-vis, FTIR, and X-ray photoelectron spectroscopies; TCSPC measurements; NMR-titration; electrochemical studies; alongside computational calculations. The proton-electrical conductivities of DLECP3, Hg(II/I)-DLECP3, and Cr(III/VI)-DLECP3 in solids/solutions are 15.27 × 10-5/6.16 × 10-5, 19.60 × 10-5/25.52 × 10-5, and 26.69 × 10-5/27.60 × 10-5 S cm-1, respectively.

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揭示脂肪族荧光聚合物对汞(II)/铬(III)的综合双态 ESIPT-电导率、氧化还原能力和光电响应。
通过聚合 2-丙烯酰胺基-2-甲基丙烷-1-磺酸、甲基丙烯酸和 2-甲基-3-(N-(2-甲基-1-磺丙烷-2-基)丙烯酰胺基)丙酸单体,制备了具有氧化还原能力的激发态分子内质子转移(ESIPT)相关双态发光脂肪族双发光导电聚合物(DLECPs)。在合成的 DLECPs 中,核磁共振(NMR)和傅立叶变换红外光谱(FTIR)、荧光增强(I/I0)和计算研究表明,DLECP3(最佳成分)具有耐人寻味的光物理特征。在 DLECP3 中,-CONH─、-CON-5/6.16 × 10-5、19.60 × 10-5/25.52 × 10-5 和 26.69 × 10-5/27.60 × 10-5 S cm-1。
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来源期刊
Macromolecular Rapid Communications
Macromolecular Rapid Communications 工程技术-高分子科学
CiteScore
7.70
自引率
6.50%
发文量
477
审稿时长
1.4 months
期刊介绍: Macromolecular Rapid Communications publishes original research in polymer science, ranging from chemistry and physics of polymers to polymers in materials science and life sciences.
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