Peculiar hydrogen bonding behaviour of water molecules inside the aqueous nanochannels of lyotropic liquid crystals

摘要: In spite of the widespread utilizations lyotropic liquid crystals (LLCs) in food technology, as nanoreactors and biomedical fields, exact nature their aqueous nanochannels which are deemed to dictate these applications not completely understood. this context, elucidation hydrogen bonding properties water molecules inside will contribute towards obtaining a complete picture LLC materials. study, we use two exhibiting an excited state intramolecular proton transfer (ESIPT), fisetin 3-hydroxyflavone, determine bond donating accepting parameters molecules. The steady results imply heterogeneity nanochannels. Upon photoexcitation normal form ESIPT molecules, notice that despite reported general alcohol like polarity nanochannels, behaviour is similar moderately polar aprotic solvents such acetonitrile. contrast, on excitation anionic species observe spectral pattern alcohols. Additionally, effect rate process has been explored. rates both probes, ultrafast (<20 ps) neat protic solvents, get slowed down dramatically by almost 15 times phases. Such extent retardation extremely rare literature, signals unique structural topology phases also influences with timescale increasing from cubic hexagonal phase.