Zobrazeno 1 - 10
of 24
pro vyhledávání: '"D. B. Spry"'
Autor:
D. B. Spry, Michael D. Fayer
Publikováno v:
The Journal of Physical Chemistry B. 113:10210-10221
Proton transfer in protonated Nafion fuel cell membranes is studied using several pyrene derivative photoacids. Proton transfer in the center of the Nafion nanoscopic water channels is probed with the highly charged photoacid 8-hydroxypyrene-1,3,6-tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4723bba22d8fb62b0d03351308918a60
https://doi.org/10.1021/jp9036777
https://doi.org/10.1021/jp9036777
Publikováno v:
Journal of the American Chemical Society. 129:14311-14318
The dynamics of water confined in two different types of reverse micelles are studied using ultrafast infrared pump-probe spectroscopy of the hydroxyl OD stretch of HOD in H2O. Reverse micelles of the surfactant Aerosol-OT (ionic head group) in isooc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::858c41d085a3570557787bde937e02f2
https://doi.org/10.1021/ja073977d
https://doi.org/10.1021/ja073977d
Publikováno v:
Journal of the American Chemical Society. 129:8122-8130
The properties of confined water and diffusive proton-transfer kinetics in the nanoscopic water channels of Nafion fuel cell membranes at various hydration levels are compared to water in a series of well-characterized AOT reverse micelles with known
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f358174f8d4fb3f42ca068ed80da1bed
https://doi.org/10.1021/ja071939o
https://doi.org/10.1021/ja071939o
Publikováno v:
The Journal of Physical Chemistry A. 111:230-237
The short and intermediate time scale dynamics of the photoacid pyranine (1-hydroxy-3,6,8-pyrenetrisulfonic acid, commonly referred to as HPTS) are studied with visible pump-probe spectroscopy in various solvents to elucidate the nature of its proton
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::992fd1bd1776fb68cf72d51a8576e24f
https://doi.org/10.1021/jp066041k
https://doi.org/10.1021/jp066041k
Publikováno v:
The journal of physical chemistry. A. 112(41)
The charge redistribution upon photoexcitation is investigated for a series of pyrene photoacids to better understand the driving force behind excited-state proton-transfer processes. The changes in electric dipole for the lowest two electronic trans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab955ecbe8cbf4988e22efdb2d07bbe5
https://pubmed.ncbi.nlm.nih.gov/18798602
https://pubmed.ncbi.nlm.nih.gov/18798602
Autor:
D. B. Spry, Michael D. Fayer
Publikováno v:
The Journal of chemical physics. 128(8)
A series of pyrene photoacids is used to investigate excited-state proton transfer with time-dependent pump-probe spectroscopy. The deprotonation dynamics of a cationic photoacid, 8-aminopyrene-1,3,6-trisulfonic acid trisodium salt (APTS), shows sing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81c8e51acce01dd248a65c2a8850fc69
https://pubmed.ncbi.nlm.nih.gov/18315062
https://pubmed.ncbi.nlm.nih.gov/18315062
Publikováno v:
Langmuir : the ACS journal of surfaces and colloids. 24(8)
The dynamics of water and its effect on proton transport kinetics in Nafion membranes are compared at several hydration levels. Nafion is the most widely used polyelectrolyte membrane in fuel cells. Ultrafast infrared spectroscopy of the O-D stretch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::892e4c2aa6302e3965d7fd294da8b05b
https://pubmed.ncbi.nlm.nih.gov/18220436
https://pubmed.ncbi.nlm.nih.gov/18220436
Autor:
D. B. Spry, Michael D. Fayer
Publikováno v:
The Journal of chemical physics. 127(20)
The photoacid 8-hydroxy-N,N,N',N',N',N'-hexamethylpyrene-1,3,6-trisulfonamide (HPTA) and related compounds are used to investigate the steps involved in excited-state deprotonation in polar solvents using pump-probe spectroscopy and time correlated s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::423f97d5318ef98c7cb37377cf8a236d
https://pubmed.ncbi.nlm.nih.gov/18052436
https://pubmed.ncbi.nlm.nih.gov/18052436
Publikováno v:
The Journal of chemical physics. 125(14)
The spectroscopic locations of the 1La and 1Lb electronic states of pyranine (1-hydroxy-3,6,8-pyrenetrisulfonic acid, commonly referred to as HPTS), as well as several related compounds, are found using magnetic circular dichroism spectroscopy as wel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::abe51ebadd54d8e9c7d0d97b30791741
https://pubmed.ncbi.nlm.nih.gov/17042616
https://pubmed.ncbi.nlm.nih.gov/17042616
Publikováno v:
The journal of physical chemistry. A. 110(15)
A core/shell model has often been used to describe water confined to the interior of reverse micelles. The validity of this model for water encapsulated in AOT/isooctane reverse micelles ranging in diameter from 1.7 to 28 nm (w0 = 2-60) and bulk wate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6758035a28152de00d37cc906de2756
https://pubmed.ncbi.nlm.nih.gov/16610816
https://pubmed.ncbi.nlm.nih.gov/16610816