NIR‐Mediated Antibacterial Clay Nanocomposites: Exfoliation of Montmorillonite Nanolayers by IR825 Intercalation. Issue 2 (29th September 2015)

• Record Type: Journal Article
• Authors: Park, Soo Jeong; Kang, Eun Bi; Sharker, Shazid Md.; Lee, Gibaek; In, Insik; Park, Sung Young
• Is Part Of: Macromolecular materials and engineering. Volume 301:Issue 2(2016)
• Page Start: 141
• Page End: 148
• Publication Date: 2015-09-29
• Subjects: antibacterial activity -- IR825 -- MMT -- NIR -- photothermal agent; Plastics -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1002/mame.201500272
• Languages: English
• ISSNs: 1438-7492

Abstract

Abstract : We report the exfoliation of montmorillonite (MMT) by IR825, a near infrared (NIR) active hyper‐thermal antibacterial nanocomposite, constructed using polyvinylpyrrolidione‐ q ‐catechol with sultones (C‐PVPS) through ionic exchange reactions. Studying this nanocomposite revealed a sharp increase in photothermal heat as a function of irradiation time, and the layered MMT structure is promising for optimizing the required thermal stability to increase the photothermal heat. Only 5 min of exposing an in vitro suspension of bacteria to NIR‐triggered local nanocomposite resulted in rapid killing of bacteria. Due to their considerable potential for photothermal applications, thermo‐stable MMT‐based materials have attracted tremendous attention for designing nanocomposites of pathogenic bacteria. Abstract : The exfoliation of MMT (montmorillonite) by IR825, a near infrared (NIR) active hyper‐thermal antibacterial nanocomposite, is constructed using polyvinylpyrrolidione‐ q ‐catechol with sultones (C‐PVPS) polymerically assembled ionic exchange reactions. The nanocomposite reveals a sharp increase in photothermal heat (Δ T = 30 °C in 5 min), and the layered MMT structure is promised for optimizing the required thermal stability to generate photothermal heat.