Highly fluorescent supramolecular gels with chirality transcription through hydrogen bonding

Abstract

A highly fluorescent organogel with transparency was formed through a hydrogen (H)-bonding interaction between a non-fluorescent and achiral 2-(3',5'-bis-trifluoromethyl-biphenyl-4-yl)-3-(4-pyridin-4-yl-phenyl)-acrylonitrile (CN-TFMBPPE) monomer and chiral sergeant l-tartaric acid (TA) (or d-TA), with gel formation being accompanied by a drastic fluorescence enhancement as well as chirality induction.

Aggregation‐Induced Emission‐Active Gels: Fabrications, Functions, and Applications

“…The chemical structures of typical multicomponent LMWGs are shown in Figure . These typical multi‐component LMWGs are 174 + 177 , 175 + 177 and 176 + 177 , [ 159 ] 178 + 179 , [ 160 ] 178 + silver (Ag + ), [ 161 ] 180 + 181 , [ 162 ] 182 + 183 , [ 163 ] 184 + Zn 2+ , [ 164 ] 142 + 185 , [ 165 ] 142 + 186 , [ 166 ] 142 + 187 , [ 167 ] 188 + 189 and 190 + 189 , [ 168 ] 191 + 192 , [ 169 ] 193 + 194 , [ 170 ] 195 + 196 , [ 171 ] 195 + 197 , [ 172 ] 142 + 198 , [ 173 ] 199 + 200 + Zn 2+ , [ 174 ] 201 + α‐cyclodextrin (α‐CD), [ 175 ] 202 + 203 + 204 , [ 176 ] and 205 + 206 . [ 177 ] Information of the AIE‐active supramolecular gels from the above multicomponent LMWGs is also summarized in Table 5 .…”

Synthesis and structures of two supramolecular complexes constructed via hydrogen bond linking

“…For the rational design of supramolecular complexes, besides the coordination interactions, the supramolecular interactions such as hydrogen bonds [9][10][11] , π-π stacking [12,13] , metal-metal [14,15] and dipolar interactions [16] , as well as Van der Waals forces [17,18] must be considered, as these weak intermolecular interactions are important factors for producing a variety of different packing arrangements of molecules during the self-assemblies.…”

Reversible Shape‐Morphing and Fluorescence‐Switching in Supramolecular Nanomaterials Consisting of Amphiphilic Cyanostilbene and Cucurbit[7]uril

“…In 2004, we could demonstrate ac yanostilbene derivative 1 forming highly luminescentn anostructure (see Scheme 1a)i n non-polar organic solvents. [14] The trifluoromethyl (CF 3 )e nd groupsa tt he meta positions of the phenylr ings in cyanostilbene 1 induced strongi ntermolecular interactions generating the well-defined and stable nanofibers, which exhibited aggregation-induced enhanced emission (AIEE)b ehavior [12,[14][15][16][17][18][19][20] based on the large decrease in non-radiative decay rate and also on the J-type excitonc oupling. Aiming at the biosensor application,w eh ave recently synthesized water-soluble version of this AIEEt ype cyanostilbened erivative 2 containing cationic 1-methylpyridinium moiety for hydrophilicity (Scheme 1a).…”