Micro‐/Nanostructured Multicomponent Molecular Materials: Design, Assembly, and Functionality

Abstract

Molecule-based micro-/nanomaterials have attracted considerable attention because their properties can vary greatly from the corresponding macro-sized bulk systems. Recently, the construction of multicomponent molecular solids based on crystal engineering principles has emerged as a promising alternative way to develop micro-/nanomaterials. Unlike single-component materials, the resulting multicomponent systems offer the advantages of tunable composition, and adjustable molecular arrangement, and intermolecular interactions within their solid states. The study of these materials also supplies insight into how the crystal structure, molecular components, and micro-/nanoscale effects can influence the performance of molecular materials. In this review, we describe recent advances and current directions in the assembly and applications of crystalline multicomponent micro-/nanostructures. Firstly, the design strategies for multicomponent systems based on molecular recognition and crystal engineering principles are introduced. Attention is then focused on the methods of fabrication of low-dimensional multicomponent micro-/nanostructures. Their new applications are also outlined. Finally, we briefly discuss perspectives for the further development of these molecular crystalline micro-/nanomaterials.

Molecular Design, Circularly Polarized Luminescence, and Helical Self‐Assembly of Chiral Aggregation‐Induced Emission Molecules

“…If more patterns of non‐covalent interactions are constructed by deliberately optimizing the chemical structures of AIE molecules, the self‐assembly process will move towards the desired direction and more judicious self‐assembly architectures will be fabricated with the AIEgens. Thanks to the enthusiastic efforts of scientists, various fluorescent supramolecular architectures, such as micelles, fibers, wires, rods, and ribbons have been constructed by the self‐assembly of AIEgens . Among them, helical micro/nanostructures have drawn much attention owing to their fascinating structures and unique emissive behaviors …”

“…Thankst ot he enthusiastic efforts of scientists, various fluorescent supramolecular architectures, such as micelles, fibers, wires, rods, and ribbonsh ave been constructed by the self-assembly of AIEgens. [17][18][19][20][21][22][23] Among them, helicalm icro/nanostructures have drawn much attention owing to their fascinating structures and unique emissive behaviors. [24][25][26][27][28] In this work, we summarize our recent work in the field of helical self-assembly of chiral AIEgens.…”

A highly luminescent organic crystal with the well-balanced charge transport property: The role of cyano-substitution in the terminal phenyl unit of distyrylbenzene

“…Notably, in some molecular systems of cyanosubstitution in the vinylene unit [28,29], polymorphs with different intermolecular stacking modes can be easily formed in which the face-to-face π stacking lack due to the molecular twisted configuration will result to a poor charge-transport performance in the crystal. Recently, DSB derivatives with cyano substituted in the terminal phenyls and similar stilbene compounds for fluorescence and optoelectronic applications have been explored [30][31][32][33]; but the effect of cyano-substitution in the terminal phenyl unit on the charge transport characteristic has not been investigated yet. Based on some crystal structure analyses, these intrinsically linear cyano substituents have no influence on the rigid and planar configuration of conjugated molecules and can be easy to form the stronger intermolecular interactions by the halogen bonds or hydrogen bonds which is also the advantage compared with other electron-withdrawing groups.…”

Recent Advances in Micro‐/Nanostructured Metal–Organic Frameworks towards Photonic and Electronic Applications

“…[6][7][8][9][10][11][12] As well, along with the advantages of high photoluminescence quantume fficiencies, color tunabilities, and size-dependent opticalp roperties, organic nanomaterials have capturedi ncreasing interest in fabricating light-emitting devices. [13][14][15][16][17][18][19] Besides the composition, the morphology, size, and dimension control also strongly influence the optical behaviors by reflecting, refracting, diffracting, and so on. [20] Therefore, control over photon behavior at the wavelength scale remains agreat challenge.…”