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Title: Interfacial charge transfer enhancement via formation of binary molecular assemblies on electronically corrugated boron nitride

Abstract

Using scanning tunneling microscopy/spectroscopy (STM/STS) in conjunction with finite element simulation, we investigate the interfacial behaviors in single-component zinc phthalocyanine (ZnPc) and hexadecafluorinated zinc phthalocyanine (F16ZnPc) molecular overlayers as well as their 1 : 1 mixedphase superstructures on h-BN/Cu(111). We show herein that the formation of the binary molecular superstructure drastically increases the charge transfer between F16ZnPc molecules and the substrate, which is attributed to the greater electrostatic stability of the binary assembly compared to that of the pure phase. This study highlights the significant complication in the design of donor–acceptor molecular thin films as the presence of the substrate, even a weakly interacting one, such as h-BN/metal, can still perturb the intermolecular charge transfer and thereby the physical behaviors of the hybrid system via interfacial processes.

Authors:
 [1]; ORCiD logo [1]
  1. Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Michigan State Univ., East Lansing, MI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1602044
Alternate Identifier(s):
OSTI ID: 1575098
Grant/Contract Number:  
SC0019120
Resource Type:
Accepted Manuscript
Journal Name:
Physical Chemistry Chemical Physics. PCCP
Additional Journal Information:
Journal Volume: 21; Journal Issue: 47; Journal ID: ISSN 1463-9076
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Tan, A., and Zhang, P. P. Interfacial charge transfer enhancement via formation of binary molecular assemblies on electronically corrugated boron nitride. United States: N. p., 2019. Web. doi:10.1039/c9cp04853g.
Tan, A., & Zhang, P. P. Interfacial charge transfer enhancement via formation of binary molecular assemblies on electronically corrugated boron nitride. United States. https://doi.org/10.1039/c9cp04853g
Tan, A., and Zhang, P. P. Fri . "Interfacial charge transfer enhancement via formation of binary molecular assemblies on electronically corrugated boron nitride". United States. https://doi.org/10.1039/c9cp04853g. https://www.osti.gov/servlets/purl/1602044.
@article{osti_1602044,
title = {Interfacial charge transfer enhancement via formation of binary molecular assemblies on electronically corrugated boron nitride},
author = {Tan, A. and Zhang, P. P.},
abstractNote = {Using scanning tunneling microscopy/spectroscopy (STM/STS) in conjunction with finite element simulation, we investigate the interfacial behaviors in single-component zinc phthalocyanine (ZnPc) and hexadecafluorinated zinc phthalocyanine (F16ZnPc) molecular overlayers as well as their 1 : 1 mixedphase superstructures on h-BN/Cu(111). We show herein that the formation of the binary molecular superstructure drastically increases the charge transfer between F16ZnPc molecules and the substrate, which is attributed to the greater electrostatic stability of the binary assembly compared to that of the pure phase. This study highlights the significant complication in the design of donor–acceptor molecular thin films as the presence of the substrate, even a weakly interacting one, such as h-BN/metal, can still perturb the intermolecular charge transfer and thereby the physical behaviors of the hybrid system via interfacial processes.},
doi = {10.1039/c9cp04853g},
journal = {Physical Chemistry Chemical Physics. PCCP},
number = 47,
volume = 21,
place = {United States},
year = {Fri Nov 15 00:00:00 EST 2019},
month = {Fri Nov 15 00:00:00 EST 2019}
}

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