Engineering Nanospaces: Iterative Synthesis of Melamine-Based Dendrimers on Amine-Functionalized SBA-15 Leading to Complex Hybrids with Controllable Chemistry and PorosityD. F. S. and C. S. C. gratefully acknowledge financial support from the Texas Advanced Research Program and the Center for Integrated Microchemical Systems at Texas A&M University. This work was also supported by NSF grant CTS-0329386. The authors also acknowledge the Microscopy and Imaging Center (MIC) at Texas A&M for access to the TEM facilities. Supporting Information is available on the web from WileyInterscience or from the author.