Zobrazeno 1 - 10
of 14
pro vyhledávání: '"David Botequim"'
Autor:
Vanda Vaz Serra, Sofia G. Serra, Mariana C. S. Vallejo, Pedro M. R. Paulo, Nuno M. M. Moura, David Botequim, Maria Graça P. M. S. Neves, Sílvia M. B. Costa
Publikováno v:
Nanomaterials, Vol 12, Iss 5, p 872 (2022)
Dual probe porphyrin-gold nanorod polyelectrolyte microcapsules were developed to explore the enhancing effects of a plasmonic interface of self-assembled gold nanoparticles in the fluorescence emission from porphyrins loaded into the capsules’ cor
Externí odkaz:
https://doaj.org/article/7660a6e0ad9b4b21bb3086cded47d7ad
Autor:
Raquel Teixeira, Vanda Vaz Serra, David Botequim, Pedro M. R. Paulo, Suzana M. Andrade, Sílvia M. B. Costa
Publikováno v:
Molecules, Vol 26, Iss 14, p 4264 (2021)
The molecular interactions of anionic tetrasulfonate phenyl porphyrin (TPPS) with poly(amido amine) (PAMAM) dendrimers of generation 2.0 and 4.0 (G2 and G4, respectively) forming H- or J-aggregates, as well as with human and bovine serum albumin prot
Externí odkaz:
https://doaj.org/article/4877b7bab2564e2c91100a164d20b17b
Autor:
Rui Oliveira-Silva, Mariana Sousa-Jerónimo, David Botequim, Nuno J. O. Silva, Duarte M. F. Prazeres, Pedro M. R. Paulo
Publikováno v:
Nanomaterials, Vol 9, Iss 6, p 893 (2019)
A simple method based on sucrose density gradient centrifugation is proposed here for the fractionation of colloidal silver nanotriangles. This method afforded particle fractions with surface plasmon resonances, spanning from red to infrared spectral
Externí odkaz:
https://doaj.org/article/b8b704c20e2c46ab8cb10b1a0931f437
Autor:
Pedro M. R. Paulo, Sílvia M. B. Costa, Alexandra P. Francisco, David Botequim, César A. T. Laia, Vanda Vaz Serra, Duarte M. F. Prazeres
Publikováno v:
The Journal of Physical Chemistry Letters. 10:1542-1549
Porphyrins are typically weak emitters, which presents challenges to their optical detection by single-molecule fluorescence microscopy. In this contribution, we explore the enhancement effect of gold nanodimer antennas on the fluorescence of porphyr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21333f2466a6b52bd6ed5eddb0dc4d8c
https://doi.org/10.1021/acs.jpclett.9b00373
https://doi.org/10.1021/acs.jpclett.9b00373
Autor:
Sofia G Serra, David Botequim, Eduardo P. Melo, Sílvia M. B. Costa, Duarte M. F. Prazeres, Inês I R Silva, Pedro M. R. Paulo
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The conjugation of dye-labelled DNA oligonucleotides with gold nanorods has been widely explored for the development of multifunctional fluorescent nanoprobes. Here, we show that the functionalization route is crucial to achieve enhanced emission in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e800cf83014af7352cda885292c34dd
https://pubmed.ncbi.nlm.nih.gov/32133478
https://pubmed.ncbi.nlm.nih.gov/32133478
Autor:
S. A. M. Martins, Sílvia M. B. Costa, A. Jóskowiak, Pedro M. R. Paulo, Duarte M. F. Prazeres, Peter Zijlstra, David Botequim
Publikováno v:
Journal of Physical Chemistry C, 122(20), 10971-10980. American Chemical Society
The surface plasmon modes of metal nanoparticles provide a way to efficiently enhance the excitation and emission from a fluorescent dye. We have employed DNA-directed assembly to prepare dimers of gold nanoparticles and used their longitudinally cou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2faf7ce21bd80d6b542101f278bdca0a
https://research.tue.nl/en/publications/fa090dda-7482-4b1c-92e7-d6d17395bbcb
https://research.tue.nl/en/publications/fa090dda-7482-4b1c-92e7-d6d17395bbcb
Autor:
Suzana M. Andrade, Raquel Teixeira, Pedro M. R. Paulo, Vanda Vaz Serra, Sílvia M. B. Costa, David Botequim
Publikováno v:
Molecules, Vol 26, Iss 4264, p 4264 (2021)
Molecules
Molecules
The molecular interactions of anionic tetrasulfonate phenyl porphyrin (TPPS) with poly(amido amine) (PAMAM) dendrimers of generation 2.0 and 4.0 (G2 and G4, respectively) forming H- or J-aggregates, as well as with human and bovine serum albumin prot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4bc81ad2c723da4ab37c9649d5522e4
https://doi.org/10.3390/molecules26144264
https://doi.org/10.3390/molecules26144264
Autor:
Pedro M. R. Paulo, David Botequim, Agnieszka Jóskowiak, Sofia Martins, Duarte M. F. Prazeres, Peter Zijlstra, Sílvia M. B. Costa
We have employed DNA-directed assembly to prepare dimers of gold nanoparticles and used their longitudinally coupled plasmon mode to enhance the fluorescence emission of an organic red-emitting dye, Atto-655. The plasmon- enhanced fluorescence of thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce0b76ddc86fab7464dfcf7d20dba4a8
https://doi.org/10.26434/chemrxiv.5728446
https://doi.org/10.26434/chemrxiv.5728446
Autor:
Mariana Sousa-Jerónimo, Nuno Silva, Duarte M. F. Prazeres, Pedro M. R. Paulo, Rui Oliveira-Silva, David Botequim
Publikováno v:
Nanomaterials
Volume 9
Issue 6
Nanomaterials, Vol 9, Iss 6, p 893 (2019)
Volume 9
Issue 6
Nanomaterials, Vol 9, Iss 6, p 893 (2019)
A simple method based on sucrose density gradient centrifugation is proposed here for the fractionation of colloidal silver nanotriangles. This method afforded particle fractions with surface plasmon resonances, spanning from red to infrared spectral
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d53c6fed4172bf65e171b772e10abb2
https://doi.org/10.3390/nano9060893
https://doi.org/10.3390/nano9060893
Autor:
Pedro N. Simões, Laura M. Ilharco, L. Lopes, Miguel M. Lino, Lino Ferreira, João M. Maia, David Botequim
Publikováno v:
Langmuir. 28:7646-7656
Here, we present new antimicrobial nanoparticles based on silica nanoparticles (SNPs) coated with a quaternary ammonium cationic surfactant, didodecyldimethylammonium bromide (DDAB). Depending on the initial concentration of DDAB, SNPs immobilize bet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdb32c884923743d73c7cdafeab17d2b
https://doi.org/10.1021/la300948n
https://doi.org/10.1021/la300948n