Effects of protecting groups on luminescent metal nanoclusters: spectroscopic signatures and applications

Abstract

Luminescent metal nanoclusters (NCs) have been established as the next-generation fluorophores. The biocompatible and non-toxic nature, along with excellent chemical- and photo-stability render them to find applications in multi-disciplinary areas....

Recent advances in the applications of porous organic cages

“…Given the growing industrial demand, the development of POC-based porous materials leading to gas isotope separation is a worthwhile goal. The targets are not only limited to hydrogen isotopes; the separation of 3 He and 4 He, 16 O 2 and 18 O 2 , or 12 CO 2 and 14 CO 2 are all of significant importance 135 industrially, yet remain challenging and require precise control of the pore size of the separation agents.…”

“…8,9 The design and synthesis of organic cages have been well summarized in a few recent reviews; however, these are not the focus of this study. [10][11][12] In general, most organic molecules tend to pack in the solid state to maximize the intermolecular interactions, leading to minimal void volume. When ''virtual'' voids form in solvated inclusion compounds as organic molecules crystallize from suitable solvents, they tend not to withstand desolvation, resulting in collapsed structures and loss of porosity.…”

“…25,29,30 Many reviews have been published that summarize the area of porous organic cages or more broadly porous organic molecular materials; the majority have focused on the design and synthesis of the cages. 12,25,31 One of the first motivations for exploring this type of molecule as a porous material is to take advantage of some unique properties of POCs (Fig. 2).…”

Single-Stranded DNA Recognition over Fluorescent Gold-Aryl Nanoparticles

“…There are different quenching mechanisms proposed for nanoparticle-quencher interactions, such as non-radiative recombination, energy and electron transfer, and surface adsorption. Factors including spectral overlap, the orientation of the transition dipoles, and donor-acceptor distance matter in the rate of energy transfer between donor-acceptors [53]. Time-resolved fluorescence lifetime measurements were used to validate the quenching mechanisms of ssDNA interactions with AuNPs-DNS.…”

Assembly-Induced Emission in Mercaptosuccinic Acid-Templated Silver Nanoclusters: Metal Ion Selectivity and pH Sensitivity

“…Owing to the phenomenal physicochemical properties such as high photostability, a large Stokes shift, water solubility, lower toxicity, and biocompatibility, luminescent metal nanoclusters (MNCs) have been emerged as new promising functional materials, possessing the size domain of ∼2 nm. − Due to their quantum size effects, MNCs display fascinating luminescent properties, unlike their bulk metallic counterparts, and have been explored in diverse applications, such as in biomedical applications, , energy storage, , catalysis, , sensing, , and environmental monitoring. , Over the years, various kinds of ligands such as peptides, proteins, polymers, dendrimers, and thiolated ligands, , have been used as the template to prepare stable luminescent noble MNCs (Au, Ag, and Cu). Despite the significant contributions from these ligands, the synthesis of MNCs using small ligands as a template serves as a major bottleneck toward their development.…”