Pteridine derivatives: novel low-molecular-weight organogelators and their piezofluorochromism

摘要: Here, π-conjugated compounds based on pteridine derivatives were synthesized and their self-assembling behaviors in a variety of organic solvents studied. Although there no conventional gelation groups, such as alkyl amide bonds, or hydrogen bond units, the pteridines substituted with phenyl, p-chlorophenyl p-fluorophenyl exhibited different abilities, p-chlorophenyl-substituted derivative CCP showed excellent ability minimum concentration (MGC) 2 mg mL−1 isopropanol, n-butanol amylene alcohol. In addition, fluorescence response to mechanical forces for 4-amino- hydroxyl-substituted derivatives, namely, PYP, PIP, DBP, BNP OHP was obtained. Interestingly, pyrrolidine- dibutyl amino-substituted PYP DBP blue-shift emission after grinding, while piperidine-, benzyl amino- red-shift grinding. The single-crystal structures PIP excluded that distance corresponding π–π interactions led differences MFC properties.