Book ChapterDOI
X-ray absorption spectroscopy for the structural investigation of self-assembled-monolayer-directed mineralization.
Jonathan R. I. Lee,Michael Bagge-Hansen,Trevor M. Willey,Robert W. Meulenberg,Michael H. Nielsen,Ich C. Tran,Tony van Buuren +6 more
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TLDR
X-ray absorption spectroscopy provides the attractive ability to study SAM structure at critical stages throughout the processes of crystallization in SAM/mineral systems.Abstract:
Self-assembled monolayers (SAMs) of organothiol molecules prepared on noble metal substrates are known to exert considerable influence over biomineral nucleation and growth and, as such, offer model templates for investigation of the processes of directed biomineralization. Identifying the structural evolution of SAM/crystal systems is essential for a more comprehensive understanding of the mechanisms by which organic monolayers mediate mineral growth. X-ray absorption spectroscopy (XAS) provides the attractive ability to study SAM structure at critical stages throughout the processes of crystallization in SAM/mineral systems. Here, we discuss important theoretical and experimental considerations for designing and implementing XAS studies of SAM/mineral systems.read more
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Journal ArticleDOI
Potential-induced electronic structure changes in supercapacitor electrodes observed by in operando soft X-ray spectroscopy.
Michael Bagge-Hansen,Brandon C. Wood,Tadashi Ogitsu,Trevor M. Willey,Ich C. Tran,Arne Wittstock,Monika M. Biener,Matthew D. Merrill,Marcus A. Worsley,Minoru Otani,Cheng-Hao Chuang,David Prendergast,Jinghua Guo,Theodore F. Baumann,Tony van Buuren,Jürgen Biener,Jonathan R. I. Lee +16 more
TL;DR: The dynamic physiochemical response of a functioning graphene-based aerogel supercapacitor is monitored in operando by soft X-ray spectroscopy and interpreted through ab initio atomistic simulations to indicate structural modifications across multiple length scales via independent pseudocapacitive and electric double layer charge storage channels.
References
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Journal ArticleDOI
Self-assembled monolayers of thiolates on metals as a form of nanotechnology.
Journal ArticleDOI
Formation and Structure of Self-Assembled Monolayers.
TL;DR: Monolayers of alkanethiolates on gold are probably the most studied SAMs to date and offer the needed design flexibility, both at the individual molecular and at the material levels, and offer a vehicle for investigation of specific interactions at interfaces, and of the effect of increasing molecular complexity on the structure and stability of two-dimensional assemblies.
Journal ArticleDOI
Oriented Growth of Calcite Controlled by Self-Assembled Monolayers of Functionalized Alkanethiols Supported on Gold and Silver
TL;DR: In this article, the authors describe the oriented nucleation of calcite controlled by self-assembled monolayers (SAMs) of ω-terminated alkanethiols (HS(CH2)nX) supported on metal films.
Journal ArticleDOI
Carbon 1s near-edge-absorption fine structure in graphite.
TL;DR: High-resolution p z - and p x,y -projected fine structure for the 1s carbon core level in graphite are compared with symmetry-projected calculations, and a very sharp transition occurs about 7.6 eV above the Fermi energy in the px,y results, agreeing closely with the nondispersive σ * band.
Journal ArticleDOI
Biomimetic CaCO3 mineralization using designer molecules and interfaces
TL;DR: The biomimetic synthesis of calcium carbonate, the most abundant biomineral, has been the main focus and the control over polymorphism, crystallographic orientation, and crystal organization are paramount in determining the properties of hybrid materials.