{"title":"Two New Multifunctional Hydrogen-Bonded Supramolecular Compounds Based on Viologen: Photochromism, Photocontrolled Fluorescence, and Ammonia Detection","authors":"Yuanyuan Li, Ying Gao, Zeyuan Gao, Mengnan Zhao, Baili Zhu, Jian Zhou, Shuxin Cui, Minghui Zuo","doi":"10.1134/s0036024424701292","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Two novel viologen-functionalized Supramolecular compounds {[H<sub>2</sub>bpybc]<sub>0.5</sub>⋅[H<sub>2</sub>BTEC]<sub>0.5</sub>⋅ H<sub>2</sub>O}<sub><i>n</i></sub> (<b>1</b>) and {[H<sub>2</sub>bpybc]⋅[H<sub>3</sub>BTEC]<sub>2</sub>⋅2H<sub>2</sub>O}<sub><i>n</i></sub> (<b>2</b>), were synthesized through a solution-based approach in the presence of 1,1'-bis((4-carboxybenzyl)-4,4'-bipyridine) chloride (H<sub>2</sub>bpybc⋅2Cl), 1,2,4,5-benzenetetracarboxylic acid (H<sub>4</sub>BTEC), and Zn(NO<sub>3</sub>)<sub>2</sub>⋅6H<sub>2</sub>O. Single crystal X-ray diffraction analysis showed the three-dimensional supramolecular network structures within compounds <b>1</b> and <b>2</b>. Notably, these compounds exhibit reversible photochromism due to the formation of viologen radicals, facilitating electron transfer. The order of light response time follows the sequence <b>1</b> > <b>2</b>. To further elucidate the discoloration mechanism, Time dependent density functional theory (TDDFT) was employed. Additionally, compound <b>1</b> showed interesting photomodulated fluorescence behavior. Faster responsive rate is observed in the system of <b>1</b> due to its shorter D–A distance and intramolecular hydrogen bonding structure. Remarkably, compound <b>1</b> displays selective sensing capabilities towards NH<sub>3</sub> and triethylamine among various organic amines. Given its photochromic properties, compound <b>1</b> holds promise as a potential candidate for photochromic materials, anti-counterfeit paints, and information monitoring technology applications.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Physical Chemistry A","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1134/s0036024424701292","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Two novel viologen-functionalized Supramolecular compounds {[H2bpybc]0.5⋅[H2BTEC]0.5⋅ H2O}n (1) and {[H2bpybc]⋅[H3BTEC]2⋅2H2O}n (2), were synthesized through a solution-based approach in the presence of 1,1'-bis((4-carboxybenzyl)-4,4'-bipyridine) chloride (H2bpybc⋅2Cl), 1,2,4,5-benzenetetracarboxylic acid (H4BTEC), and Zn(NO3)2⋅6H2O. Single crystal X-ray diffraction analysis showed the three-dimensional supramolecular network structures within compounds 1 and 2. Notably, these compounds exhibit reversible photochromism due to the formation of viologen radicals, facilitating electron transfer. The order of light response time follows the sequence 1 > 2. To further elucidate the discoloration mechanism, Time dependent density functional theory (TDDFT) was employed. Additionally, compound 1 showed interesting photomodulated fluorescence behavior. Faster responsive rate is observed in the system of 1 due to its shorter D–A distance and intramolecular hydrogen bonding structure. Remarkably, compound 1 displays selective sensing capabilities towards NH3 and triethylamine among various organic amines. Given its photochromic properties, compound 1 holds promise as a potential candidate for photochromic materials, anti-counterfeit paints, and information monitoring technology applications.
期刊介绍：
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.
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