Silver nanoparticles (AgNPs) have a large number of technological
applications, such as photonic devices, molecular diagnostics,
antimicrobial coating and biomedical devices. These nanomaterials can be
synthesized using common fungi, which represents a green approach with
the additional advantage of biocompatibility. Here we applied
Tip-Enhanced Raman Spectroscopy (TERS) to obtain optical
characterization with resolution beyond the diffraction limit of AgNPs
produced by Rhodotorula glutinis and Rhodotorula mucilaginosa fungi.
Those fungi are conventional found in ordinary soil of north part of
Brazil, which biosynthesize core-shell AgNPs with protein-capping layer.
With TERS we were able to investigate with lateral resolution of few
nanometers the size and structure of the protein capping layer, how it
interacts with the Ag core, and how sensitive the system (core+ protein)
is to visible light illumination. Despite the complex data generated
which depends on the orientation of the protein, which is highly, it was
possible to detect the stretching of the S - S sulfur bridge in amino
acids. This stretch band is induced by a trans C-alpha - S conformation
acid on Rm-AgNPs, thus showing the potential of characterization of TERS
in nanobiosystems.
%0 Journal Article
%1 WOS:000605624900003
%A Agressott, Enzo V H
%A de Moura, Thiago Alves
%A Marinho, Nathalia Leal
%A de Vasconcelos, Thiago L
%A Cunha, Francisco Afranio
%A Fechine, P B A
%A de Souza Filho, Antonio Gomes
%A Paschoal, Alexandre R
%C RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
%D 2020
%I ELSEVIER
%J VIBRATIONAL SPECTROSCOPY
%K Fungi} Green Proteins; Raman Tip-Enhanced spectroscopy; synthesis; {AgNPs;
%R 10.1016/j.vibspec.2020.103104
%T Tip-Enhanced Raman spectroscopy investigations of core-shell Ag-proteins
nanoparticles synthesized by Rhodotorula mucilaginosa and Rhodotorula
glutinis fungi
%V 110
%X Silver nanoparticles (AgNPs) have a large number of technological
applications, such as photonic devices, molecular diagnostics,
antimicrobial coating and biomedical devices. These nanomaterials can be
synthesized using common fungi, which represents a green approach with
the additional advantage of biocompatibility. Here we applied
Tip-Enhanced Raman Spectroscopy (TERS) to obtain optical
characterization with resolution beyond the diffraction limit of AgNPs
produced by Rhodotorula glutinis and Rhodotorula mucilaginosa fungi.
Those fungi are conventional found in ordinary soil of north part of
Brazil, which biosynthesize core-shell AgNPs with protein-capping layer.
With TERS we were able to investigate with lateral resolution of few
nanometers the size and structure of the protein capping layer, how it
interacts with the Ag core, and how sensitive the system (core+ protein)
is to visible light illumination. Despite the complex data generated
which depends on the orientation of the protein, which is highly, it was
possible to detect the stretching of the S - S sulfur bridge in amino
acids. This stretch band is induced by a trans C-alpha - S conformation
acid on Rm-AgNPs, thus showing the potential of characterization of TERS
in nanobiosystems.
@article{WOS:000605624900003,
abstract = {Silver nanoparticles (AgNPs) have a large number of technological
applications, such as photonic devices, molecular diagnostics,
antimicrobial coating and biomedical devices. These nanomaterials can be
synthesized using common fungi, which represents a green approach with
the additional advantage of biocompatibility. Here we applied
Tip-Enhanced Raman Spectroscopy (TERS) to obtain optical
characterization with resolution beyond the diffraction limit of AgNPs
produced by Rhodotorula glutinis and Rhodotorula mucilaginosa fungi.
Those fungi are conventional found in ordinary soil of north part of
Brazil, which biosynthesize core-shell AgNPs with protein-capping layer.
With TERS we were able to investigate with lateral resolution of few
nanometers the size and structure of the protein capping layer, how it
interacts with the Ag core, and how sensitive the system (core+ protein)
is to visible light illumination. Despite the complex data generated
which depends on the orientation of the protein, which is highly, it was
possible to detect the stretching of the S - S sulfur bridge in amino
acids. This stretch band is induced by a trans C-alpha - S conformation
acid on Rm-AgNPs, thus showing the potential of characterization of TERS
in nanobiosystems.},
added-at = {2022-05-23T20:00:14.000+0200},
address = {RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS},
author = {Agressott, Enzo V H and de Moura, Thiago Alves and Marinho, Nathalia Leal and de Vasconcelos, Thiago L and Cunha, Francisco Afranio and Fechine, P B A and de Souza Filho, Antonio Gomes and Paschoal, Alexandre R},
biburl = {https://www.bibsonomy.org/bibtex/2c8dba5ee885c1502961beb1aab41f084/ppgfis_ufc_br},
doi = {10.1016/j.vibspec.2020.103104},
interhash = {c4ae09f33017e9003eeeb0deb38d664a},
intrahash = {c8dba5ee885c1502961beb1aab41f084},
issn = {0924-2031},
journal = {VIBRATIONAL SPECTROSCOPY},
keywords = {Fungi} Green Proteins; Raman Tip-Enhanced spectroscopy; synthesis; {AgNPs;},
publisher = {ELSEVIER},
pubstate = {published},
timestamp = {2022-05-23T20:00:14.000+0200},
title = {Tip-Enhanced Raman spectroscopy investigations of core-shell Ag-proteins
nanoparticles synthesized by Rhodotorula mucilaginosa and Rhodotorula
glutinis fungi},
tppubtype = {article},
volume = 110,
year = 2020
}