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Page 1
Brazilwood reds: the (photo)chemistry of brazilin and brazilein.
Rondão R, Seixas de Melo JS, Pina J, Melo MJ, Vitorino T, Parola AJ. Rondão R, et al. J Phys Chem A. 2013 Oct 17;117(41):10650-60. doi: 10.1021/jp404789f. Epub 2013 Oct 3. J Phys Chem A. 2013. PMID: 24050687
The colorless species (brazilin) presents a high fluorescence quantum yield (F = 0.33) and competitive radiative channel (kF = 1.3 10(9) s(-1)) over radiationless processes (kNR = 2.6 10(9) s(-1)). In contrast to this behavior, brazilein displays a F value 2 orders …
The colorless species (brazilin) presents a high fluorescence quantum yield (F = 0.33) and competitive radiative channel (kF = 1.3 10 …
Phylogenetic classification of the world's tropical forests.
Slik JWF, Franklin J, Arroyo-Rodríguez V, Field R, Aguilar S, Aguirre N, Ahumada J, Aiba SI, Alves LF, K A, Avella A, Mora F, Aymard C GA, Báez S, Balvanera P, Bastian ML, Bastin JF, Bellingham PJ, van den Berg E, da Conceição Bispo P, Boeckx P, Boehning-Gaese K, Bongers F, Boyle B, Brambach F, Brearley FQ, Brown S, Chai SL, Chazdon RL, Chen S, Chhang P, Chuyong G, Ewango C, Coronado IM, Cristóbal-Azkarate J, Culmsee H, Damas K, Dattaraja HS, Davidar P, DeWalt SJ, Din H, Drake DR, Duque A, Durigan G, Eichhorn K, Eler ES, Enoki T, Ensslin A, Fandohan AB, Farwig N, Feeley KJ, Fischer M, Forshed O, Garcia QS, Garkoti SC, Gillespie TW, Gillet JF, Gonmadje C, Granzow-de la Cerda I, Griffith DM, Grogan J, Hakeem KR, Harris DJ, Harrison RD, Hector A, Hemp A, Homeier J, Hussain MS, Ibarra-Manríquez G, Hanum IF, Imai N, Jansen PA, Joly CA, Joseph S, Kartawinata K, Kearsley E, Kelly DL, Kessler M, Killeen TJ, Kooyman RM, Laumonier Y, Laurance SG, Laurance WF, Lawes MJ, Letcher SG, Lindsell J, Lovett J, Lozada J, Lu X, Lykke AM, Mahmud KB, Mahayani NPD, Mansor A, Marshall AR, Martin EH, Calderado Leal Matos D, Meave JA, Melo FPL, Mendoza ZHA, Metali F, Medjibe VP, Metzger JP, Metzker T, Moha… See abstract for full author list ➔ Slik JWF, et al. Proc Natl Acad Sci U S A. 2018 Feb 20;115(8):1837-1842. doi: 10.1073/pnas.1714977115. Epub 2018 Feb 5. Proc Natl Acad Sci U S A. 2018. PMID: 29432167 Free PMC article.
Excited-state isomerization of leuco indigo.
Rondão R, Seixas de Melo J, Melo MJ, Parola AJ. Rondão R, et al. J Phys Chem A. 2012 Mar 22;116(11):2826-32. doi: 10.1021/jp211996f. Epub 2012 Mar 8. J Phys Chem A. 2012. PMID: 22353137
The photoreaction of indigo and two other derivatives in its reduced (leuco) form was investigated by absorption and fluorescence (steady-state and time-resolved) techniques. The fluorescence quantum yield (phi(F)) dependence with the UV irradiation time was found to incre …
The photoreaction of indigo and two other derivatives in its reduced (leuco) form was investigated by absorption and fluorescence (steady-st …
Observation of Selectively Populated Monohalide Excited States from the Reactions of Group 3 Metal (Sc, Y, and La) Monomers and Dimers with Halogen-Containing Molecules.
Gole JL, Chalek CL, Mason MM, de Melo GF, Vasiliu M, Dixon DA. Gole JL, et al. J Phys Chem A. 2022 Jun 9;126(22):3403-3426. doi: 10.1021/acs.jpca.2c01779. Epub 2022 May 25. J Phys Chem A. 2022. PMID: 35613075
The chemiluminescent reactions of the group 3 metals Sc and Y with F(2), Cl(2), Br(2), ClF, ICl (Sc), IBr (Y), and SF(6) and La with F(2), SF(6), Cl(2), and ClF have been studied at low pressures (6 10(-6) to 4 10(-4) Torr) using a beam-gas arrangement and extended …
The chemiluminescent reactions of the group 3 metals Sc and Y with F(2), Cl(2), Br(2), ClF, ICl (Sc), IBr (Y), and SF(6) and La with …
An estimate of the number of tropical tree species.
Slik JW, Arroyo-Rodríguez V, Aiba S, Alvarez-Loayza P, Alves LF, Ashton P, Balvanera P, Bastian ML, Bellingham PJ, van den Berg E, Bernacci L, da Conceição Bispo P, Blanc L, Böhning-Gaese K, Boeckx P, Bongers F, Boyle B, Bradford M, Brearley FQ, Breuer-Ndoundou Hockemba M, Bunyavejchewin S, Calderado Leal Matos D, Castillo-Santiago M, Catharino EL, Chai SL, Chen Y, Colwell RK, Chazdon RL, Clark C, Clark DB, Clark DA, Culmsee H, Damas K, Dattaraja HS, Dauby G, Davidar P, DeWalt SJ, Doucet JL, Duque A, Durigan G, Eichhorn KA, Eisenlohr PV, Eler E, Ewango C, Farwig N, Feeley KJ, Ferreira L, Field R, de Oliveira Filho AT, Fletcher C, Forshed O, Franco G, Fredriksson G, Gillespie T, Gillet JF, Amarnath G, Griffith DM, Grogan J, Gunatilleke N, Harris D, Harrison R, Hector A, Homeier J, Imai N, Itoh A, Jansen PA, Joly CA, de Jong BH, Kartawinata K, Kearsley E, Kelly DL, Kenfack D, Kessler M, Kitayama K, Kooyman R, Larney E, Laumonier Y, Laurance S, Laurance WF, Lawes MJ, Amaral IL, Letcher SG, Lindsell J, Lu X, Mansor A, Marjokorpi A, Martin EH, Meilby H, Melo FP, Metcalfe DJ, Medjibe VP, Metzger JP, Millet J, Mohandass D, Montero JC, de Morisson Valeriano M, Mugerwa B, Nagamasu H, Nilus… See abstract for full author list ➔ Slik JW, et al. Proc Natl Acad Sci U S A. 2015 Jun 16;112(24):7472-7. doi: 10.1073/pnas.1423147112. Epub 2015 Jun 1. Proc Natl Acad Sci U S A. 2015. PMID: 26034279 Free PMC article.
Validation of an analytical method for the determination of cadmium (Cd) in fish by atomic absorption spectrometry with electrothermal atomisation.
Costa LC, Neto AP, Araújo MQ, Melo MC, Furtado DM, Kikuchi AN. Costa LC, et al. Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2012;29(4):633-40. doi: 10.1080/19440049.2012.654614. Epub 2012 Feb 27. Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2012. PMID: 22364191
For the normality test a homoskedastic distribution was observed for the developed method and the results were adjusted to the statistical model proposed. F-tests and Student's t-tests indicated that there was no matrix effect on the calibration curve between the concentra …
For the normality test a homoskedastic distribution was observed for the developed method and the results were adjusted to the statistical m …
Spectral and photophysical characterization of donor-pi-acceptor arylthienyl- and bithienyl-benzothiazole derivatives in solution and solid state.
Pina J, de Melo JS, Burrows HD, Batista RM, Costa SP, Raposo MM. Pina J, et al. J Phys Chem A. 2007 Sep 6;111(35):8574-8. doi: 10.1021/jp0730646. Epub 2007 Aug 14. J Phys Chem A. 2007. PMID: 17696325
The arylthienyl-benzothiazole derivatives show high fluorescence quantum yields (phi(F)) with negligible internal conversion (phi(IC)), whereas the bithienyl-benzothiazoles display lower but still significant phi(F) values, but now radiationless processes (phi(IC) a …
The arylthienyl-benzothiazole derivatives show high fluorescence quantum yields (phi(F)) with negligible internal conversion (phi(IC) …