title: Anion responsive dibenzoyl-L-cystine and luminescent lanthanide soft material.
abstract: A mild sol-gel technique was used to incorporate terbium dibenzoyl-L-cystine complex into silica and green luminescent hybrid material was fabricated. (1)H NMR and fluorescence spectroscopy revealed the hybrids can recognize F(-) anions through hydrogen bonding formation and had no sense in binding other halide or HSO(4)(-). Furthermore, a luminescent hydrogel was successfully designed by immobilizing a terbium activated phosphor (Gd(0.1)Ce(0.9)PO(4):Tb) into molecular hydrogelator (dibenzoyl-L-cystine). The Tb(III) emission in hydrogel media gave a distinguished enhancement based on temperature increase and the function conforms to exponential equation y = 1160.6 exp(0.03x). The stability of the green luminescent gel was rather excellent and the reversibility of the gel can be recycled at least five times.
authors.affiliation: School of Chemistry and Environment, South China Normal University, Guangzhou, China.
authors.forename: Yuhui
authors.initials: Y
authors.lastname: Zheng
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Chaoliang
authors.initials: C
authors.lastname: Tan
authors.forename: Qianming
authors.initials: Q
authors.lastname: Wang
mesh_terms: D000596:Amino Acids / Q000737:chemistry / Q000378:metabolism*; D015374:Biosensing Techniques / Q000379:methods*; D005459:Fluorides / Q000378:metabolism*; D020100:Hydrogels / Q000737:chemistry / Q000378:metabolism*; D006860:Hydrogen Bonding / Q000528:radiation effects; D006863:Hydrogen-Ion Concentration; D008027:Light; D049449:Luminescence; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation / Q000528:radiation effects; D055668:Photochemical Processes / Q000528:radiation effects; D013050:Spectrometry, Fluorescence; D017550:Spectroscopy, Fourier Transform Infrared; D013725:Terbium / Q000737:chemistry / Q000378:metabolism*; D014867:Water / Q000737:chemistry
chemical_list: D000596:Amino Acids; D020100:Hydrogels; D014867:Water; D013725:Terbium; D005459:Fluorides