Supramolecular polymorphism in aggregates of a boron-difluoride complex of peri-naphthoindigo via solvent- and pathway-dependent self-assembly

Abstract

Supramolecular polymorphism in dye aggregates, and examples of N,O-bidentate boron difluoride complexes are very uncommon in chemistry. Both the rarities have been addressed by synthesising a new N,O-bidentate boron difluoride...

Lamellar assembly and nanostructures of amphiphilic boron(iii) diketonates through suitable non-covalent interactions

“…Difluoroboron β-diketonates represent a series of brightly fluorescent materials on account of their distinguished chemical and rich photophysical properties that may confer advantages for a number of potential technological applications. 66–70…”

“…Difluoroboron β-diketonates represent a series of brightly fluorescent materials on account of their distinguished chemical and rich photophysical properties that may confer advantages for a number of potential technological applications. [66][67][68][69][70] In contrast, less is known about the systematic studies and further understanding of boron(III) diketonates with amphiphilic nature for the self-assembly study. It is believed that the pla-narization of the diketonate moiety after coordination to the -BF 2 moiety framework would facilitate extensive π-π interactions for self-assembly, resulting in the preparation of supramolecular assemblies with interesting properties.…”

Multiple aggregates from multiple polymorphs: structural and mechanistic insight into organic dye aggregates

“…These same methods also form variable supramolecular structures from dye self-assembly outside of the conventional H-or J-type motifs. [82][83][84][85][86][87][88] The distinction between long-range, periodic order in crystals and the order in a dye aggregate is important to respect, but it also keeps their knowledge bases separated. While collaboration between these two fields has been fruitful in the identification and characterization of micro/nanocrystalline dye aggregates, 46,54,[89][90][91][92][93][94] these lessons have not yet been applicable to the AIEgen community at large.…”

Reversible Supramolecular Polymorphism in Solution and Solid Matrix by Manipulating Sidegroup Conformation

“…In recent years, fascinating examples of supramolecular polymorphism have been reported in dye assemblies. [14][15][16][17][18][19][20][21][22][23][24][25][26] In solution self-assembly, distinguishing polymorphs from crystal-solvates (pseudopolymoprhs) is not particularly easy. [27] Nevertheless, aggregates with very different morphologies have been prepared in solution, [14][15][16][17][18][19][20][21][22] and in some cases even isolated in the solid state.…”

“…[14][15][16][17][18][19][20][21][22][23][24][25][26] In solution self-assembly, distinguishing polymorphs from crystal-solvates (pseudopolymoprhs) is not particularly easy. [27] Nevertheless, aggregates with very different morphologies have been prepared in solution, [14][15][16][17][18][19][20][21][22] and in some cases even isolated in the solid state. [23][24][25][26] We reviewed these examples to understand the aspects of molecular design that allow one to a) control the outcome of supramolecular polymorphism, and b) achieve reversible transformation between different polymorphs using a suitable external stimulus.…”