Zobrazeno 1 - 10
of 234
pro vyhledávání: '"Frank H Quina"'
Autor:
Eli M. Espinoza, John A. Clark, Cassio Pacheco da. Silva, James B. Derr, Gustavo Thalmer de Medeiros Silva, Mimi K. Billones, Maryann Morales, Frank H. Quina, Valentine I. Vullev
Publikováno v:
Journal of Photochemistry and Photobiology, Vol 10, Iss , Pp 100110- (2022)
Pyranoflavylium cations are synthetic analogues of pyranoanthocyanin, colored pigments, formed from grape anthocyanins during the maturation of red wines. Studies of a series of monosubstituted pyranoflavylium cations, ranging from methoxy (PF+-OMe)
Externí odkaz:
https://doaj.org/article/d35cc8c149c44680b5f070e317fe2e57
Autor:
Gustavo Thalmer M. Silva, Karen Magno Silva, Cassio P. Silva, Josué M. Gonçalves, Frank H. Quina
Publikováno v:
ACS Omega, Vol 5, Iss 41, Pp 26592-26600 (2020)
Externí odkaz:
https://doaj.org/article/3cb32f1e208744468806f2c125c12e6c
Publikováno v:
Journal of Photochemistry and Photobiology, Vol 7, Iss , Pp 100042- (2021)
The concept of photosensitization had its origins in the serendipitous discovery in the 19th century that dye molecules could enhance the spectral range of photographic emulsions. In the latter half of the 20th century, photosensitization reached mat
Externí odkaz:
https://doaj.org/article/21332bc85dc94b0485eb3ca6e2b61e66
Autor:
Thiago C. Correra, Frank H. Quina
Publikováno v:
ARKIVOC, Vol 2020, Iss 2, Pp 1-8 (2019)
Externí odkaz:
https://doaj.org/article/4311c805b1d94e32aa31723e9e6c43b1
Autor:
Eli M. Espinoza, John A. Clark, James B. Derr, Duoduo Bao, Boriana Georgieva, Frank H. Quina, Valentine I. Vullev
Publikováno v:
ACS Omega, Vol 3, Iss 10, Pp 12857-12867 (2018)
Externí odkaz:
https://doaj.org/article/ca5df82c4dad4246b8099fb1937e65c4
Autor:
Cassio Pacheco da Silva, Renan Moraes Pioli, Liu Liu, Shasha Zheng, Mengjiao Zhang, Gustavo Thalmer de Medeiros Silva, Vânia Maria Teixeira Carneiro, Frank H. Quina
Publikováno v:
ACS Omega, Vol 3, Iss 1, Pp 954-960 (2018)
Externí odkaz:
https://doaj.org/article/91fb25d84b47476d9a53fb50ca10c3c5
Publikováno v:
Brazilian Journal of Chemical Engineering.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90e458d1ac2b28194c93464a01f868d9
https://doi.org/10.1007/s43153-023-00324-z
https://doi.org/10.1007/s43153-023-00324-z
Autor:
Krishna N. Ganesh, Deqing Zhang, Sarbajit Banerjee, Swagata Dasgupta, Paul D. Goring, Shaojun Guo, Johan Hofkens, Silvia Imberti, Ajay Jha, Jesús Jiménez-Barbero, Jeehiun K. Lee, Sensuke Ogoshi, Frank H. Quina, Dinesh C. Soares, Luisa Torsi, Jing-Lin Zuo
Publikováno v:
ACS Omega, Vol 5, Iss 28, Pp 16986-16986 (2020)
Externí odkaz:
https://doaj.org/article/0c764a55d8a9463faa6d9b8b8369e137
Autor:
Lucas M. O. S. Martins, Xuhui Wang, Gustavo T. M. Silva, Helena C. Junqueira, Bárbara Fornaciari, Lohanna F. Lopes, Cassio P. Silva, Peng Zhou, Victor F. Cavalcante, Mauricio S. Baptista, Frank H. Quina
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Hydroxypyranoflavylium (HPF) cations are synthetic analogs possessing the same basic chromophore as the pyranoanthocyanins that form during the maturation of red wine. HPF cations absorb strongly in the visible spectral region, and most are fluoresce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8291e8499360658eb96b0bf745711cf5
https://pubmed.ncbi.nlm.nih.gov/35944220
https://pubmed.ncbi.nlm.nih.gov/35944220
Autor:
Gustavo T. M. Silva, Cassio P. Silva, Karen M. Silva, Renan M. Pioli, Tássia S. Costa, Vinícius V. Marto, Adilson A. Freitas, Jennifer Rozendo, Lucas M. O. S. Martins, Victor F. Cavalcante, Liuqing Sun, Adelia J. A. Aquino, Vânia M. T. Carneiro, Frank H. Quina
Publikováno v:
Photochem; Volume 2; Issue 2; Pages: 423-434
Fluorescence spectra and lifetimes were determined for 16 synthetic flavylium cation analogues of anthocyanin plant pigments in dry acetonitrile acidified with trifluoroacetic acid (TFA). Phosphorescence was also observed from the lowest excited trip
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fef74657244773d0448541bb49f4561