Atomic force microscopy of reaction of ammonia gas with crystalline substituted benzoic acid

Abstract

Articles you may be interested inTemperature dependence of solvation forces as measured in atomic force microscopy Regular nanostructures are formed by chemical reaction of ammonia gas with crystalline substituted benzoic acid such as p-bromobenzoic ͑1a͒, p-toluic ͑1b͒, p-aminobenzoic ͑1c͒, and p-nitrobenzoic acid ͑1d͒. Their size and shape are determined and depicted by atomic force microscopy ͑AFM͒. AFM reveals that the crystal main face ͑100͒ of 1a, ͑100͒ of 1b, ͑100͒ of 1c, and ͑001͒ of 1d exhibits craters and volcanoes, craters and volcanoes, volcanoes, and volcanoes, respectively, whereas the long side face ͑100͒ of 1d gives rise to craters and volcanoes. All the experimental results are correlated with the crystal structures. Molecular interpretations of the AFM features of 1a, 1b, 1c, and 1d are given.