Organic Nanocolorants: Self-Fixed, Optothermal Resistive, Silica-Supported Dyes for Sustainable Dyeing of Leather

Abstract

The emerging field of nanotechnology aims at revolutionizing the industrial world via introducing nanobased material for coloring. In particular, silica-based colorant nanoparticles for coloring were developed, which show extraordinary performance in the coloring world with a self-fixing property. In this regard, the use of a nano-based prefunctionalized colorant, which possesses a perfect framed structure, is unexplored in the coloring world especially in leather coloring along with stabilization. Herein, we report the inclusion of an organic cationic colorant into silica matrices by a simple emulsion technique in an aqueous condition. Unique photophysical properties displayed by the colorant enable the development of a newer coloring method and excellent resistance to high optical and thermal conditions. In addition, the newer system does not require any pretreatment like acidification for fixing the colorant with a minimum amount of water usage. It penetrates and fixes into the matrix without any need ...