Unique photothermal response and sustained photothermal effect of pH-responsive gold-nanoparticle aggregates

Jutaek Nam; Hyoseok Nam; Sungwook Jung; Sekyu Hwang; Taejun Wang; Jaehyun Hur; Kyuhyun Im; Nokyoung Park; Ki Hean Kim; Sungjee Kim

doi:10.1002/cphc.201200720

Unique photothermal response and sustained photothermal effect of pH-responsive gold-nanoparticle aggregates

Chemphyschem. 2012 Dec 21;13(18):4105-9. doi: 10.1002/cphc.201200720. Epub 2012 Nov 6.

Authors

Jutaek Nam¹, Hyoseok Nam, Sungwook Jung, Sekyu Hwang, Taejun Wang, Jaehyun Hur, Kyuhyun Im, Nokyoung Park, Ki Hean Kim, Sungjee Kim

Affiliation

¹ Department of Chemistry, Pohang University of Science & Technology (POSTECH), San 31, Hyojadong, Namgu, Pohang 790-784, South Korea.

PMID: 23132778
DOI: 10.1002/cphc.201200720

Abstract

Hot gold: The photothermal response upon pulsed laser irradiation is studied for pH-responsive gold-nanoparticle aggregates and compared to that of gold nanorods. The aggregates show a slight red shift in the absorption spectrum and retain the photothermal effect, whereas the nanorods lose the photothermal effect and exhibit a stark blue shift in the absorption.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Gold / chemistry*
Hydrogen-Ion Concentration
Light
Low-Level Light Therapy / methods
Metal Nanoparticles / chemistry*
Photochemical Processes
Photons

Substances

Gold