Title

Chitosan Capped Colloidal Gold Nanoparticles For Sensing Zinc Ions In Water

Keywords

Electrospray mass spectrometry; inelastic tunneling spectroscopy; ion beam deposition; molecular magnetism; scanning tunneling microscopy

Abstract

The high intrinsic spin and long spin relaxation time of manganese-12-acetate (Mn 12) makes it an archetypical single molecular magnet. While these characteristics have been measured on bulk samples, questions remain whether the magnetic properties replicate themselves in surface supported isolated molecules, a prerequisite for any application. Here we demonstrate that electrospray ion beam deposition facilitates grafting of intact Mn 12 molecules on metal as well as ultrathin insulating surfaces enabling submolecular resolution imaging by scanning tunneling microscopy. Using scanning tunneling spectroscopy we detect spin excitations from the magnetic ground state of the molecule at an ultrathin boron nitride decoupling layer. Our results are supported by density functional theory based calculations and establish that individual Mn 12 molecules retain their intrinsic spin on a well chosen solid support. © 2011 American Chemical Society.

Publication Date

1-11-2012

Publication Title

Journal of Nano Research

Volume

16

Issue

1

Number of Pages

55-61

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.4028/www.scientific.net/JNanoR.16.55

Socpus ID

84856098096 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84856098096

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