Nanosecond Pulsed Laser‐Heated Nanocrystals Inside a Metal‐Organic Framework Matrix

authored by

Max Niemeyer, Patrick Michael Bessel, Pascal Rusch, Rasmus Himstedt, Daniel Kranz, Hadir Mahmoud Abdelghaffar Moustafa Borg, Nadja-Carola Bigall, Dirk Dorfs

Abstract

Investigations on gold and gold-zinc oxide nanocrystals encapsulated in a matrix of a metal-organic framework (ZIF-8) upon plasmonic heating with nanosecond laser pulses are presented. Irradiation of Au@ZIF-8 composite particles leads to heating of the gold core and decomposition of surrounding matrix acting as temperature probe. Cavities inside the ZIF-8 matrix are found on TEM images after irradiation. Their size is determined dependent on laser energy density and the generated heat at the gold core after absorption of a laser pulse approximated. The surrounding of the gold cores can be heated up to ZIF-8 decomposition over a distance up to 60 nm. This represents a method to visualize heat transfer from the gold cores to the ZIF-8 matrix in three dimensions. Studies on ZIF-8 encapsulated Au@ZnO dot-rod particles give insight in heat transfer between the particle components and show the applicability of the method to different, more complex systems.

Organisation(s)

Institute of Physical Chemistry and Electrochemistry
Hannover School for Nanotechnology

Type

Article

Journal

CHEMNANOMAT

Volume

8

ISSN

2199-692X

Publication date

08.06.2022

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Biomaterials, Renewable Energy, Sustainability and the Environment, Energy Engineering and Power Technology, Materials Chemistry

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1002/cnma.202200169 (Access: Open)