Read the full paper here: Macromolecules (2018) DOI: 10.1021/acs.macromol.8b00613 We introduce visible light induced dynamic covalent chemistry as a powerful reversible ligation tool based on a wavelength-dependent photon efficiency analysis (WPEA). We demonstrate by a monochromatic wavelength scan of the reversible dimerization of styrylpyrene at constant photon count that the system is most effective in its forward reaction at 435 nm, while the highest reverse reaction efficiency is observed at 330 nm. Critically, these optimum wavelengths are not accessible by inspection of the UV/vis spectra of the monomer and the dimer. Application of the identified reaction conditions enabled an entire

Get the full paper here: Mater. Horizons(2018) doi: 10.1039/C8MH00241J. The sustainable origin and highly promising mechanical and functional properties of cellulose nanofibrils (CNFs) attract significant interest for the construction of advanced functional materials. One key aspect of promoting the functionality of CNF-based materials is to implement sophisticated, facile and versatile chemical functionalization principles for application-targeted modification of CNF properties, independent of whether aiming for functional surfaces, hydrogels or bulk materials. We herein merge, for the first time, a self-reporting photo-induced modular ligation (the UV-induced nitrile imine-mediated tetrazo

Get the full article here: Angew. Chem. Int. Ed.(2018) doi:10.1002/anie.201801700 Scaffold‐based lattice‐engineered 3D DNA origami emerges as a powerful and versatile technique for the rational design and built‐up of arbitrary and monodisperse DNA‐based 3D nanoobjects. Relying on the unsurpassed molecular programmability of sequence‐specific DNA hybridization, a long circular ssDNA strand (termed scaffold) is assembled with many short ssDNA oligomers (termed staples), which organize the scaffold into a 3D lattice in a single step leading to highest precision 3D nanoparticulate structures with high yields. Applications of 3D DNA origami are increasingly wide‐spread and interface with numerous