@article {2426,
	title = {Products and kinetics of the reactions of an alkane monolayer and a terminal alkene monolayer with NO3 radicals},
	journal = {Journal of Geophysical Research-Atmospheres},
	volume = {114},
	year = {2009},
	note = {ISI Document Delivery No.: 401ZETimes Cited: 10Cited Reference Count: 95Gross, Simone Bertram, Allan K.},
	month = {Jan},
	pages = {14},
	type = {Article},
	abstract = {The reactions of an alkanethiol and a terminal alkenethiol self-assembled monolayer with NO3 radicals (in the presence of NO2 and O-2) were studied. For the alkane monolayer, infrared (IR) spectroscopy and time-of-flight secondary ion mass spectrometry (ToF-SIMS) confirmed the formation of organonitrates (RONO2). The observation of organonitrates is in contrast to the recent X-ray photoelectron spectroscopy (XPS) data, which showed very little nitrogen-containing surface species. The identification of organonitrates may help explain why significant volatilization of the organic chain was not observed in recent studies of alkane monolayer oxidation by NO3 radicals. The reactive uptake coefficient (gamma) of NO3 on alkene monolayers determined in our study is higher than the values obtained in a recent study using liquid and solid alkene bulk films. A possible reason for this difference may be the location of the double bond at the interface. Using the g value determined in our studies, we show that under conditions where NO3 is high the lifetime of an alkene monolayer in the atmosphere may be short ( approximately 20 min). XPS, IR, and ToF-SIMS were used to identify surface functional groups after the oxidation of the alkene monolayers by NO3. The results are consistent with the formation of C-O, aldehyde/ketone, carboxylic groups, and nitrogen containing species.},
	keywords = {GAS-PHASE, HETEROGENEOUS OXIDATION, ION, MASS-SPECTROMETRY, NITROGEN-DIOXIDE, OH RADICALS, OLEIC-ACID, POLYCYCLIC AROMATIC-HYDROCARBONS, REACTIONS, RELATIVE RATE CONSTANTS, SELF-ASSEMBLED MONOLAYERS, VOLATILE ORGANIC-COMPOUNDS},
	isbn = {0148-0227},
	url = {<Go to ISI>://000262982300003},
	author = {Gross, S. and Bertram, A. K.}
}
@article {2427,
	title = {Reactive uptake studies of NO3 and N2O5 on alkenoic acid, alkanoate, and polyalcohol substrates to probe nighttime aerosol chemistry},
	journal = {Physical Chemistry Chemical Physics},
	volume = {11},
	number = {36},
	year = {2009},
	note = {ISI Document Delivery No.: 491ADTimes Cited: 6Cited Reference Count: 86Gross, Simone Iannone, Richard Xiao, Song Bertram, Allan K.},
	pages = {7792-7803},
	type = {Article},
	abstract = {Heterogeneous reactions between NO3 and N2O5 and diethyl sebacate (DES), glycerol, oleic acid (OA), linoleic acid (LA), and conjugated linoleic acid (CLA) were studied to understand better nighttime aerosol chemistry. The reactive uptake coefficient of NO3 on the liquid alkenoic acids (OA, LA, and CLA) was found to be >0.07, which is higher than previous results for unsaturated organics, including alkenoic acids. This reaction could potentially be an important loss process of particle-phase unsaturated organic compounds in the atmosphere and in laboratory secondary organic aerosol studies. The reactive uptake coefficient of N2O5 on liquid glycerol was also found to be relatively large with a value of (3.2-8.5) x 10(-4), suggesting that N2O5 heterogeneous reactions with alcohols may also be atmospherically relevant. For all measurements with OA, CLA, and DES, the reactive uptake coefficients decreased significantly upon freezing. One possible explanation is that the liquid reaction is due to both a surface reaction and a bulk reaction and that the freezing process significantly decreases the importance of any bulk reactions. NO3 reactive uptake coefficients for liquid-phase compounds decreased in magnitude in the order: alkenoic acids > DES > glycerol. This is different compared to previous gas-phase studies and the difference may be due to the large viscosity of glycerol compared to the other organic compounds studied. N2O5 reactive uptake coefficients for liquid-phase compounds decreased in magnitude in the order: glycerol > LA > DES congruent to OA congruent to CLA.},
	keywords = {ATMOSPHERIC PARTICLES, CLOUD DROPLETS, DINITROGEN PENTOXIDE, GAS-PHASE DIFFUSION, HETEROGENEOUS OXIDATION, MIXED PARTICLES, OLEIC-ACID, RATE COEFFICIENT, SOLUBLE ORGANIC-COMPOUNDS, SULFURIC-ACID},
	isbn = {1463-9076},
	url = {<Go to ISI>://000269548300004},
	author = {Gross, S. and Iannone, R. and Xiao, S. and Bertram, A. K.}
}
