Preparation and upconversion luminescence cell imaging of O-carboxymethyl chitosan-functionalized NaYF4:Yb3+/Tm3+/Er3+ nanoparticles
نویسندگان
چکیده
منابع مشابه
Upconversion luminescence of CdTe nanoparticles
Alan G. Joly,1 Wei Chen,2,* David E. McCready,1 Jan-Olle Malm,3 and Jan-Olov Bovin3 1Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA 2Nomadics, Inc., 1024 South Innovation Way, Stillwater, Oklahoma 74074, USA 3Materials Chemistry, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-22100, Lund, Sweden sReceived 5 July 2004; revis...
متن کاملPrevention of postsurgical adhesions with N,O-carboxymethyl chitosan: examination of the most efficacious preparation and the effect of N,O-carboxymethyl chitosan on postsurgical healing.
BACKGROUND Adhesion formation after operation can result in major complications. We have previously demonstrated that N,O-carboxymethyl chitosan (NOCC) is an effective inhibitor of postsurgical peritoneal adhesion formation. However, the optimal form of NOCC (i.e., cross-linked gel versus solution), as well as the best time of administration for optimal reduction in adhesion development, was no...
متن کاملEnhancing luminescence in lanthanide-doped upconversion nanoparticles.
The enthusiasm for research on lanthanide-doped upconversion nanoparticles is driven by both a fundamental interest in the optical properties of lanthanides embedded in different host lattices and their promise for broad applications ranging from biological imaging to photodynamic therapy. Despite the considerable progress made in the past decade, the field of upconversion nanoparticles has bee...
متن کاملTumoricidal effect of O - carboxymethyl chitin , N , O - carboxymethyl chitosan and 2 - phtalimido chitin evaluation with human tumour cell line
Chitin is a nitrogen-containing polysaccharide, related chemically to cellulose. It is a principal constituent of the exoskeleton crustaceans. Due to their biocompatibility and less toxic nature, it has been developed as new physiologically bioactive materials since they possess various biological activities. Chemical extraction of chitin from shells, of the white shrimp Parapenaeus longirostri...
متن کاملPreparation, Characterization, and Insecticidal Activity of Avermectin-Grafted-Carboxymethyl Chitosan
Avermectin-grafted-N,O-carboxymethyl chitosan (NOCC) derivative was obtained by esterification reaction using dicyclohexylcarbodiimide (DCC) as dehydrating agent and 4-methylaminopyridine as catalyst. The structures of the conjugate were confirmed by FT-IR, (1)H NMR, and XRD. Insecticidal activities against armyworms, carmine spider mites, black bean aphids, and brown plant hoppers were investi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chinese Science Bulletin
سال: 2013
ISSN: 1001-6538,1861-9541
DOI: 10.1007/s11434-013-6023-8