Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Patrick J. Roach"'
Autor:
Hyun Ji Julie Lee, Bingbing Wang, Sergey A. Nizkorodov, Peter A. Eckert, Julia Laskin, Qichi Hu, Patrick J. Roach, Alexander Laskin, Mary K. Gilles
Publikováno v:
Environmental Science & Technology. 48:12047-12055
Complementary methods of high-resolution mass spectrometry and microspectroscopy were utilized for molecular analysis of secondary organic aerosol (SOA) generated from ozonolysis of two structural monoterpene isomers: D-limonene SOA (LSOA) and α-pin
Autor:
Jeramie D. Watrous, Pieter C. Dorrestein, Julia Laskin, Theodore Alexandrov, Brandi S. Heath, Patrick J. Roach
Publikováno v:
Analytical Chemistry; Vol 85
Understanding molecular interaction pathways in complex biological systems constitutes a treasure trove of knowledge that might facilitate the specific, chemical manipulation of the countless microbiological systems that occur throughout our world. H
Publikováno v:
The Journal of Physical Chemistry A. 116:8085-8091
Understanding the emergence of properties from the size-selective cluster regime to larger nanoparticles is one of the principal goals of nanoscience. We have measured the size-selective reactivity of aluminum cluster anions with alcohols. All cluste
Publikováno v:
Analytical Chemistry. 83:4924-4929
Higher-order mass defect analysis is introduced as a unique formula assignment and visualization method for the analysis of complex mass spectra. This approach is an extension of the concepts of Kendrick mass transformation widely used for identifica
Publikováno v:
The Journal of Physical Chemistry A. 114:6071-6081
The reactivity of aluminum anion clusters with water was found to exhibit variations with size, with some clusters exhibiting negligible reactivity, others absorbing one or more water, while even others releasing H(2) with addition of multiple waters
Autor:
Sergey A. Nizkorodov, Julia Laskin, Gordon W. Slysz, Lucas Q. Nguyen, Gordon A. Anderson, Patrick J. Roach, Alexander Laskin, David L. Bones
Publikováno v:
Analytical Chemistry. 82:2048-2058
Characterization of the chemical composition and chemical transformations of secondary organic aerosol (SOA) is both a major challenge and the area of greatest uncertainty in current aerosol research. This study presents the first application of deso
Publikováno v:
Science. 323:492-495
The reactions of metal clusters with small molecules often depend on cluster size. The selectivity of oxygen reactions with aluminum cluster anions can be well described within an electronic shell model; however, not all reactions are subject to the
Publikováno v:
Journal of the American Chemical Society. 129:16098-16101
It is shown that spin accommodation plays a determining role in the reactivity of aluminum based anion clusters with oxygen. Experimental reactivity studies on aluminum and aluminum-hydrogen clusters show variable reactivity in even electron systems
Publikováno v:
Proceedings of the National Academy of Sciences. 104:14565-14569
The formation and oxygen etching of Al n H m − clusters are characterized in a flow reactor experiment with first-principles theoretical investigations to demonstrate the exceptional stability of Al 4 H 7 − . The origin of the preponderance of Al
Publikováno v:
Proceedings of the National Academy of Sciences. 103:18405-18410
We recently demonstrated that, in gas phase clusters containing aluminum and iodine atoms, an Al 13 cluster behaves like a halogen atom, whereas an Al 14 cluster exhibits properties analogous to an alkaline earth atom. These observations, together wi