Supramolecular Chemistry最新文献_第4页

Model binding experiments with cucurbit[7]uril and p-sulfonatocalix[4]arene support use of explicit solvation term in governing equation for binding equilibria 葫芦丝[7]脲和对磺酰基[4]芳烃的模型结合实验支持在结合平衡控制方程中使用显式溶剂化项

IF 3.3 4区化学

Supramolecular Chemistry Pub Date : 2022-02-01 DOI: 10.1080/10610278.2023.2254442

D. Eggers, Adam Brewer, Kimberly J. Cacatian, L. A. Camat, Dominic Castagnoli, Nina Chuang, Lillian N. Chung, Thanh Do, Emily Huynh, Thanayuth Jenpichitkulchai, Anoop Kaur, Frank Le, Roy Ong, Duc Pham, Kevin Shao

{"title":"Model binding experiments with cucurbit[7]uril and p-sulfonatocalix[4]arene support use of explicit solvation term in governing equation for binding equilibria","authors":"D. Eggers, Adam Brewer, Kimberly J. Cacatian, L. A. Camat, Dominic Castagnoli, Nina Chuang, Lillian N. Chung, Thanh Do, Emily Huynh, Thanayuth Jenpichitkulchai, Anoop Kaur, Frank Le, Roy Ong, Duc Pham, Kevin Shao","doi":"10.1080/10610278.2023.2254442","DOIUrl":"https://doi.org/10.1080/10610278.2023.2254442","url":null,"abstract":"ABSTRACT The thermodynamics of model host–guest-binding reactions is examined in depth using isothermal titration calorimetry. In conflict with classical thermodynamics, the results indicate that the equilibrium-binding quotient, K, is not a constant for all pairings. This outcome is predicted by an equation for binding equilibria that includes an explicit term for the change in solvation free energy that accompanies the formation of a binary complex. Application of this framework to the experimentally observed concentration dependence of K allows one to obtain the energetic contribution of the solvent, a linked equilibrium denoted here as ΔG H2O. The estimated values of ΔG H2O are large and unfavourable for the binding of selected guest molecules to two hosts, cucurbit[7]uril and p-sulfonatocalix[4]arene. Intriguingly, the estimated values of ΔG H2O are near zero for the binding of two hydrophobic guest molecules to β-cyclodextrin, leading to a thought-provoking discussion on the driving force behind the hydrophobic effect. Graphical abstract","PeriodicalId":22084,"journal":{"name":"Supramolecular Chemistry","volume":"42 1","pages":"94 - 104"},"PeriodicalIF":3.3,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78539968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Controlling selective formation of [2]- and [3]-pseudorotaxanes by tuning spacer length of guests 通过调节客体的间隔长度来控制[2]-和[3]-伪环紫杉烷的选择性形成

IF 3.3 4区化学

Supramolecular Chemistry Pub Date : 2022-02-01 DOI: 10.1080/10610278.2023.2223333

Jinyang Wu, Long Chen, Xuan Sun, Song Huang, Xiaowei Li, Wen Feng, Li-hua Yuan

{"title":"Controlling selective formation of [2]- and [3]-pseudorotaxanes by tuning spacer length of guests","authors":"Jinyang Wu, Long Chen, Xuan Sun, Song Huang, Xiaowei Li, Wen Feng, Li-hua Yuan","doi":"10.1080/10610278.2023.2223333","DOIUrl":"https://doi.org/10.1080/10610278.2023.2223333","url":null,"abstract":"ABSTRACT Exploration of host–guest complexation between a shape-persistent H-bonded macrocycle and flexible guests may enable construction of new pseudorotaxanes systems. Here, we present the impact of varying the spacer length of four bis(4-phenylpyridinium) guests G1-G4 on production of pseudorotaxanes with a 2D H-bonded macrocycle 1a. The host–guest complexes are probed by 1H NMR, 2D NOESY and UV–vis spectroscopic techniques. [2]- and [3]- pseudorotaxane assemblies are formed specifically using these guests, demonstrating the dependency of accessing [2]- and [3]- pseudorotaxane on the spacer length of these dications. Theoretical calculations reveal the difference in the conformation of the guests between these two binding modes: the one with a 1:1 stoichiometry (spacer length: C4 and C6) show Z-shaped conformation and the other with a 2:1 stoichiometry (spacer length: C8 and C10) take a linear conformation. The findings of the threading modes may help develop new H-bonded macrocycle-based rotaxanes and other related mechanically interlocked molecules. GRAPHICAL ABSTRACT","PeriodicalId":22084,"journal":{"name":"Supramolecular Chemistry","volume":"37 5 1","pages":"66 - 76"},"PeriodicalIF":3.3,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83394621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

NASC: bringing together supramolecular chemists from across North America NASC:汇集了来自北美各地的超分子化学家

IF 3.3 4区化学

Supramolecular Chemistry Pub Date : 2022-01-02 DOI: 10.1080/10610278.2023.2178724

Nathalie Busschaert, Víctor García‐López, Chenfeng Ke, C. McGuirk, L. S. Shimizu, Margaret C. Gerthoffer, Nabarupa Bhattacharjee

引用次数: 0

Global analysis for pD-variation NMR titration of organic electrolyte complexes 有机电解质配合物pd变化核磁共振滴定的全局分析

IF 3.3 4区化学

Supramolecular Chemistry Pub Date : 2022-01-02 DOI: 10.1080/10610278.2023.2174025

R. Navarro, Yedith Soberanes, M. Inoue

引用次数: 0

Statement of Retraction 撤回声明

IF 3.3 4区化学

Supramolecular Chemistry Pub Date : 2022-01-02 DOI: 10.1080/10610278.2023.2176013

引用次数: 0

Tripodal 1,3,5-benzenetricarboxamide ligand with dipicolinic acid units and its binding with Eu(III) ions 具有二吡啶酸单位的三足1,3,5-苯三羧基酰胺配体及其与Eu(III)离子的结合

IF 3.3 4区化学

Supramolecular Chemistry Pub Date : 2022-01-02 DOI: 10.1080/10610278.2023.2177162

Niklas Klangwart, Céline Ruijs, C. Hawes, T. Gunnlaugsson, O. Kotova

{"title":"Tripodal 1,3,5-benzenetricarboxamide ligand with dipicolinic acid units and its binding with Eu(III) ions","authors":"Niklas Klangwart, Céline Ruijs, C. Hawes, T. Gunnlaugsson, O. Kotova","doi":"10.1080/10610278.2023.2177162","DOIUrl":"https://doi.org/10.1080/10610278.2023.2177162","url":null,"abstract":"ABSTRACT The synthesis and characterisation of tripodal ligand 1 containing 1,3,5-benzenetricarboxamide core and diethyl 4-(phenylethynyl)pyridine-2,6-dicarboxylate is described. The crystal structure of the intermediate tripodal molecule 7 exhibits an unusual staggered hydrogen-bonded chain motif instead of the anticipated helical assembly. We studied the basic photophysical properties of 1 in solvents of various polarity including CH3OH, CH3CN, DMSO, and CHCl3. The self-assembly experiments between 1 and Eu(CF3SO3)3⋅6H2O confirmed the formation of metal-ligand self-assembly species in the solution of CH3CN. It was also shown that the excitation of the Eu(III)-centred emission in such species occurred through the energy transfer from the ligand acting as an antenna to the metal centre. The binding constant values were evaluated using the nonlinear regression analysis software SPECFIT®, and their values correspond to those previously observed for the assemblies between 2,6-dipicolinic acid derivatives and lanthanide ions. This work describes the synthesis of tripodal 1,3,5-benzenetricarboxamide ligand with dipicolinic acid units and its binding with Eu(III) ions in solution. The photophysical properties of the target tripodal ligand were studied in solvents of various polarity. The self-assembly experiments between the ligand and Eu(III) ions in solution confirmed the formation of luminescent metal-ligand self-assembly species. Graphical abstract","PeriodicalId":22084,"journal":{"name":"Supramolecular Chemistry","volume":"2 1","pages":"10 - 19"},"PeriodicalIF":3.3,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82101935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bacterial cytological profiling identifies transmembrane anion transport as the mechanism of action for a urea-based antibiotic 细菌细胞学分析确定跨膜阴离子运输作为尿素基抗生素的作用机制

IF 3.3 4区化学

Supramolecular Chemistry Pub Date : 2022-01-02 DOI: 10.1080/10610278.2023.2178921

Sarah R. Herschede, R. Salam, Hassan Gneid, Nathalie Busschaert

引用次数: 2

A dual-functional chemosensor based on phenazine derivative for detecting toxic ions in water samples and cosmetic 基于非那嗪衍生物的双功能化学传感器用于水样和化妆品中有毒离子的检测

IF 3.3 4区化学

Supramolecular Chemistry Pub Date : 2022-01-02 DOI: 10.1080/10610278.2023.2213795

Yuhu Che, Xiao-Ni Qi, Wen-juan Qu, Qi Lin, Hong Yao, You‐Ming Zhang, T. Wei

引用次数: 0

(Self) assembled news: recent highlights from the supramolecular chemistry literature (Quarter 1, 2023) (自我)汇编新闻:超分子化学文献的最新亮点(2023年第1季度)

IF 3.3 4区化学

Supramolecular Chemistry Pub Date : 2022-01-02 DOI: 10.1080/10610278.2023.2189346

Cally J. E. Haynes, Nicholas G. White

{"title":"(Self) assembled news: recent highlights from the supramolecular chemistry literature (Quarter 1, 2023)","authors":"Cally J. E. Haynes, Nicholas G. White","doi":"10.1080/10610278.2023.2189346","DOIUrl":"https://doi.org/10.1080/10610278.2023.2189346","url":null,"abstract":"The synthesis of pillar[n]arene macrocycles has been one of the most influential developments in the recent history of supramolecular chemistry. These macrocycles have a rich host – guest chemistry and can often be prepared in a single step. Writing in Nature Synthesis, a team led by Andrew Sue (winner of the 2021 Sessler Early Career Research Prize) have shown that pillar[5] arene derivatives can be used to form well-defined chiral nanotubes [1]. The nanotubes are formed in a singlestep condensation reaction of a penta-formyl macrocycle and phenylenediamine in quantitative yield (Figure 1). The penta-formyl compound was previously reported by the same group and was synthesised from tiara[5]arene, which was itself prepared from a rimdifferentiated pillar[5]arene [2]. Pillar[5]arenes are chiral but racemise rapidly in solution through rotation of the rings; however, in the nanotubes this rotation is locked and a pair of enantiomeric tubes were formed that could be separated using chiral HPLC. While the binding of chiral guests was not investigated, the nanotubes show strong binding of dihydroxyalkanes and dibromoalkanes with selectivity based on guest size.","PeriodicalId":22084,"journal":{"name":"Supramolecular Chemistry","volume":"19 1","pages":"2 - 3"},"PeriodicalIF":3.3,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80751248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Statement of Retraction: Neomycin and gentamicin detection via molecular recognition with cyclam decorated gold nanoparticles 撤回声明:环环霉素修饰金纳米颗粒分子识别检测新霉素和庆大霉素

IF 3.3 4区化学

Supramolecular Chemistry Pub Date : 2022-01-02 DOI: 10.1080/10610278.2023.2176002

引用次数: 0