Nanoscopic photoluminescence memory as a fingerprint of complexity in self-assembled alkyl/siloxane hybrids

abstract

A thermally activated photoluminescence memory effect, induced by a reversible order-disorder phase transition of the alkyl chains, is reported for highly organized bilayer alkyl/siloxane hybrids (see figure; left at room temperature, right at 120 degrees C). The emission energy is sensitive to the annihilation/formation of the hydrogen-bonded amide-amide array displaying a unique nanoscopic sensitivity (ca. 150 nm).

keywords

METAL ACTIVATOR IONS; BRIDGED SILSESQUIOXANES; INFRARED TEMPERATURE; LIGHT EMISSION; HYDROLYSIS; SILICATES; POLYMERS; LONG; MONOLAYERS; PHOSPHORS

subject category

Chemistry; Science & Technology - Other Topics; Materials Science; Physics

authors

Carlos, LD; Bermudez, VD; Amaral, VS; Nunes, SC; Silva, NJO; Ferreira, RAS; Rocha, J; Santilli, CV; Ostrovskii, D

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