Exciting Supramolecular Architectures: Light‐Induced Processes and Synthetic Transformations in Noncovalent Assemblies

Abstract

Keywords: Supramolecular chemistry / Photochemistry / Self-assembly / ReceptorsThis review outlines recent advances in the area of supramolecular photochemistry, particularly with respect to the use of noncovalent interactions to direct and control excited-state processes in the solid phase and in solution.Light is a versatile tool in modern science. The growing momentum of nanotechnology has rekindled interest in photochemical processes, which play an important role in numerous applications in which light is used as a source of energy or to transmit information to and from molecular components. The latter are frequently arranged in a con- [a] (Physical Chemistry Division, 2004) and the Grammaticakis-Neuman Prize of the Swiss Chemical Society (2005).MICROREVIEWS: This feature introduces the readers to the authors' research through a concise overview of the selected topic. Reference to important work from others in the field is included. strained environment, which imparts new − though at times unexpected − behavior. This microreview is focused on the recent work in this growing area, which, interestingly, is not necessarily the dominion of photochemists. It is immediately obvious that design and synthesis play a leading role in the development of some of the more interesting systems reported. Photoinduced processes frequently encountered include fluorescence, E Ǟ Z isomerization of conjugated double bonds, energy and electron transfer, and cyclodimerization reactions. Their behavior, and at times their outcome, can be influenced by the presence of noncovalent interactions that impart structural order or rigidity to the

Vinylene‐Linked Covalent Organic Frameworks by Base‐Catalyzed Aldol Condensation

“…Solid-state supramolecular photochemistry offers an efficient way to engineer new functional polymers by taking advantage of the preorganization of reactive moieties in the crystalline matrix. [56][57][58] In general, different strategies such as hydrogen bonding interaction, p…”

“…Solid-state supramolecular photochemistry offers an efficient way to engineer new functional polymers by taking advantage of the preorganization of reactive moieties in the crystalline matrix. [56][57][58] In general, different strategies such as hydrogen bonding interaction, p•••p stacking,a nd metalligand interactions have been explored to control the topochemical arrangement of the reactive modules.E fficient p•••p stacking of 2D layers within 2D COFs offer as uitable…”

Engineering functional materials by halogen bonding

“…Supramolecular photochemistry23 in the solid state provides an efficient way for accessing stereo‐ and regio‐controlled syntheses. The advantages of this approach come from the preorganization of the reacting modules in the crystal matrix, but the engineering of such a preorganization remains a challenge.…”

Supramolecular control of electronic properties in aromatic materials

“…Numerous systems containing a photosensitive moiety have been designed to show a measurable response to light irradiation [3]. This can include morphological changes [4,5], which then affect the size, shape, and physical properties of aggregates, but also the release [6,7] and capture [8,9] of substrates.…”