Aggregation of azamethine dyes on hydrated glass surfaces: An evanescent wave-induced fluorescence study
Literature Information
Chetan K. Parmar, Garry Rumbles, Christopher J. Winscom
The formation of luminescent aggregates of two pyrazolotriazole azamethine dyes in bulk solutions and at hydrated glass surfaces has been investigated using steady-state and time-resolved fluorescence spectroscopy as well as evanescent wave-induced fluorescence spectroscopy (EWIFS). Bulk measurements of dye A in methylcyclohexane, acetonitrile and dibutyl phthalate show that it exists as a molecular entity with fluorescence decay times in the sub-picosecond regime. However, in methylcyclohexane, dye B forms aggregates that possess fluorescence decay times in the nanosecond regime. Nevertheless, EWIF studies show that both dyes form luminescent aggregates at the interface between hydrated fused silica and methylcyclohexane, and hydrated flint glass (LASF3) and dibutyl phthalate.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.














