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Modification of Fibers with Nanostructures Using Reactive Dye Chemistry.

ABSTRACT: Reactive dyes conventionally used to chemically bind chromophores to fabrics have been used to develop a platform technology that can modify commercially available fibers with nanoscale structures. To illustrate this concept, commercial nylon and cellulose fibers have been modified with gold nanoparticles of three sizes, metal organic framework (MOF) crystals, and quantum dots in five sizes. The gold modified cellulose and nylon samples have colors that vary based on the size of the gold particles, and the particles remained attached to the fibers, even after being washed with solvents, water, and soap. The MOF was grown on the fibers after applying reactive dyes to anchor the metal building unit to the fibers, and the process produced cellulose fibers with surface areas of ~980 m²/g. Both the nylon and cellulose MOF modified fabrics show preferential adsorption of ethylene over ethane and the ability to adsorb ammonia from air. Quantum dot modified nylon and cellulose fibers have fluorescent properties consistent with the unbound particles and remained attached to the fibers after washing with organic solvents, water, and soap. Applications are broad, and this work provides a first step at coupling conventional dyes and nanotechnology.

SUBMITTER: Bunge MA

PROVIDER: S-EPMC10438899 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature

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Modification of Fibers with Nanostructures Using Reactive Dye Chemistry.

Bunge Meagan A MA Neil Ruckart K K Leavesley Silas S Peterson Gregory W GW Nguyen Nien N West Kevin N KN Grant Glover T T

Industrial & engineering chemistry research 20150319 15

Reactive dyes conventionally used to chemically bind chromophores to fabrics have been used to develop a platform technology that can modify commercially available fibers with nanoscale structures. To illustrate this concept, commercial nylon and cellulose fibers have been modified with gold nanoparticles of three sizes, metal organic framework (MOF) crystals, and quantum dots in five sizes. The gold modified cellulose and nylon samples have colors that vary based on the size of the gold particl ...[more]

PMID: 37600858

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Project description:Metallothioneis are low-molecular weight proteins engaged in zinc and copper ion homeostasis and redox potential regulation of the cell. Their clinical importance lies in their role in cancer resistance to cisplatin related drugs, which is related to their capability of binding sole toxic metal ions, as well as their complexes. Due to metallothioneins' intrinsic properties a satisfactory analytical method to detect, measure and quantify this family of proteins is lacking. In the study project at hand a fluorescent biarsenical probe, CrAsH-EDT2, is presented as specific means for the detection of human metallothioneins. Biarsencial dyes comprise of two arsenic atoms incorporated covalently into a fluorophore structure. Such chemical species show exemplary affinity for thiol groups of cysteine side chains separated in a specific spatial manner; a -CCXXCC- motif being the model one where each arsenic atom is coordinated by two adjacent cysteine thiols. Mass spectrometry analysis was employed in the project in order to pin-point the MT1E metallothionein's cysteine residues responsible for interaction with the CrAsH dye upon pure protein in vitro labelling. Using the extremely tight binding of CrAsH to MT1E to the advantage, a simple approach was undertaken, where the protein was first incubated with the dye at 1:1, 1:2 and 1:3 protein:dye molar ratio, and an alkylation (iodoacetamide (IAA)) and reduction (β-mercaptoethanol (βME)) procedure was carried out on the sample. As controls, dye-untreated non-alkylated and alkylated samples were also processed. Carbamidomethylation of cysteines within MT1E's tryptic peptides was then monitored and used as negative evidence of given cysteine’s participation in dye coordination, assuming the residue as free for the IAA reaction, and thus not occupied by the dye. Previous experiments in the project suggested three possible binding sites of CrAsH within MT1E, hence the analysis comprised of the mentioned three molar ratio steps.

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Modification of Fibers with Nanostructures Using Reactive Dye Chemistry.

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Modification of Fibers with Nanostructures Using Reactive Dye Chemistry.

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