Aqueous supramolecular chemistry, the non-covalent assembly of simple building blocks into higher ordered architectures in water has received much focus recently. Biological systems are able to form complex, and well-defined microstructures essential to cellular function, and supramolecular chemistry has demonstrated its utility in assembling molecules to form increasingly complex assemblies. This tutorial review will summarise non-covalent building blocks based on both synthetic and biological systems in an aqueous environment, emphasising the complexity of the assemblies formed. Examples of higher ordered assemblies will be highlighted, from supramolecular plastics to spider silks, towards more compartmentalised protocell precursors.
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http://dx.doi.org/10.1039/b922348g | DOI Listing |
J Am Chem Soc
January 2025
State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China.
While synthesizing circular polymers with telechelic polyolefin building blocks recently emerged as a promising strategy for addressing conventional polyethylenes' sustainability challenges, the lack of telechelic PP (PP) with sufficient difunctional purity for polycondensation has been limiting the development of circular polypropylenes with PP-like structures and properties. Here we described a combined approach of coordinative chain transfer polymerization and transition-metal-catalyzed quenching reaction with various acyl chlorides, affording PPs with a high difunctional ratio (up to ∼99%) and broad end functional group scope. The steric effect of polymeryl-Zn species and the role of Pd catalyst were revealed by DFT.
View Article and Find Full Text PDFMolecular junctions (MJs) are celebrated nanoelectronic devices for mimicking conventional electronic functions, including rectifiers, sensors, wires, switches, transistors, negative differential resistance, and memory, following an understanding of charge transport mechanisms. However, capacitive nanoscale molecular junctions are rarely seen. The present work describes electrochemically (E-Chem) grown covalently attached molecular thin films of 10, 14.
View Article and Find Full Text PDFRSC Adv
January 2025
Plasmonic Nanomaterials Laboratory, Department of Nanoscience and Technology, PSG Institute of Advanced Studies Peelamedu Coimbatore-641 004 Tamilnadu India
Escalating energy demands have often ignited ground-breaking innovations in the current era of electrochemical energy storage systems. Supercapacitors (SCs) have emerged as frontrunners in this regard owing to their exclusive features such ultra-high cyclic stability, power density, and ability to be derived from sustainable sources. Despite their promising attributes, they typically fail in terms of energy density, which poses a significant hindrance to their widespread commercialization.
View Article and Find Full Text PDFCureus
December 2024
Department of Forensic Medicine and Toxicology, Rajendra Institute of Medical Sciences, Ranchi, IND.
Background and objective The institution of marriage is an essential building block of societal structure, acting as a catalyst for joyous celebrations and fresh beginnings. Nonetheless, a persistent problem related to marriage, especially from the viewpoint of women in Indian society, is the dowry system. Despite extensive criticism and opposition, the custom remains prevalent, manifesting in subtle as well as in overt ways.
View Article and Find Full Text PDFCureus
December 2024
Community Medicine, Indira Gandhi Institute of Medical Sciences, Patna, IND.
Introduction Launched in 2018, by the Government of India, the Health and Wellness Centers (HWCs) initiative under the Ayushman Bharat program aims to transform India's primary healthcare system. This study evaluates the functioning of Health and Wellness Centres (HWCs) in random blocks of Patna, Bihar, focusing on service availability, infrastructure, manpower challenges, and overall effectiveness in meeting healthcare needs. Methodology The assessment aimed to understand the current state of functioning of 16 HWCs and identify areas for improvement through a Strengths, Weaknesses, Opportunities, Threats (SWOT) analysis.
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