کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10603344 | 982474 | 2013 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A facile one-pot synthesis of a fluorescent agarose-O-naphthylacetyl adduct with slow release properties
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A microwave assisted facile synthesis of a fluorescent 6-O-naphthylacetyl agarose (NA-agarose) employing carbodiimide chemistry (dicyclohexylcarbodiimide/4-dimethylaminopyridine) has been described. NA-agarose was characterized by TGA, GPC, UV spectrophotometry, fluorescence spectroscopy, FT-IR, 1H and 13C NMR spectra, exhibiting that in NA-agarose the naphthylacetyl group was attached to the backbone of the agarose polymer. The hydrolysis of NA-agarose in heterogeneous aqueous phase showed that the 1-naphthyl acetic acid (NAA), a plant growth regulator, got released in a controlled manner, the release rate being dependent on the hydrophilicity of the polymer adduct as well as on pH and temperature. The fluorescence emission (λmax 332 nm) of NA-agarose (1 Ã 10â3 M) in ethylene glycol was significantly higher (ca. 82%) than that of the molar equivalent of NAA content in the product i.e. 0.08 mg in 1 Ã 10â3 M solution. The resulting polymer would be of potential utility as a sustained release plant growth regulator and sensory applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 98, Issue 1, 15 October 2013, Pages 589-595
Journal: Carbohydrate Polymers - Volume 98, Issue 1, 15 October 2013, Pages 589-595
نویسندگان
Stalin Kondaveeti, Dharmesh R. Chejara, A.K. Siddhanta,