51
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Tolpygin AO, Linnikova OA, Glukhova TA, Cherkasov AV, Fukin GK, Trifonov AA. Bis(amido) rare-earth complexes coordinated by tridentate amidinate ligand: synthesis, structure and catalytic activity in the polymerization of isoprene and rac-lactide. RSC Adv 2016. [DOI: 10.1039/c5ra27960g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Rare-earth bis(amides) {2-[Ph2Р(O)]C6H4NC(tBu)N(2,6-Me2C6H3)}Ln(N(SiMe3)2)2 (Ln = Y, Nd, La) coordinated by tridentate amidinate ligand were synthesized, structurally characterized and evaluated as catalysts for isoprene and rac-lactide polymerizations.
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Affiliation(s)
- Aleksei O. Tolpygin
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Olesya A. Linnikova
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Tatyana A. Glukhova
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Anton V. Cherkasov
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Georgy K. Fukin
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Alexander A. Trifonov
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
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52
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Chang MC, Lu WY, Chang HY, Lai YC, Chiang MY, Chen HY, Chen HY. Comparative Study of Aluminum Complexes Bearing N,O- and N,S-Schiff Base in Ring-Opening Polymerization of ε-Caprolactone and l-Lactide. Inorg Chem 2015; 54:11292-8. [DOI: 10.1021/acs.inorgchem.5b01858] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Meng-Chih Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan 80708, R.O.C
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan 80424, R.O.C
| | - Wei-Yi Lu
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan 80708, R.O.C
| | - Heng-Yi Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan 80708, R.O.C
| | - Yi-Chun Lai
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan 80708, R.O.C
| | - Michael Y. Chiang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan 80708, R.O.C
- Department of Chemistry, National Sun Yat-sen University, Kaohsiung, Taiwan 80424, R.O.C
| | - Hsing-Yin Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan 80708, R.O.C
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan 80708, R.O.C
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53
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WITHDRAWN: Polymer assembly: Promising carriers as co-delivery systems for cancer therapy. Prog Polym Sci 2015. [DOI: 10.1016/j.progpolymsci.2015.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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54
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Zhao H, Feng H, Liu D, Liu J, Ji N, Chen F, Luo X, Zhou Y, Dan H, Zeng X, Li J, Sun C, Meng J, Ju X, Zhou M, Yang H, Li L, Liang X, Chu L, Jiang L, He Y, Chen Q. Self-Assembling Monomeric Nucleoside Molecular Nanoparticles Loaded with 5-FU Enhancing Therapeutic Efficacy against Oral Cancer. ACS NANO 2015; 9:9638-51. [PMID: 26349079 DOI: 10.1021/acsnano.5b04520] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Conventional oligonucleotide based drug delivery systems suffer from lengthy synthetic protocols, high cost, and poor chemical or enzymatic stability under certain circumstances. Canonical free individual nucleosides cannot form stable nanostructures in aqueous solution as drug vehicles. Here, we report the development of a monomeric self-assembled nucleoside nanoparticle (SNNP) into an efficient drug delivery system which has currently no parallel in such field. This was achieved using a l-configurational pyrimido[4,5-d]pyrimidine nucleoside building block that can form robust discrete nanoparticles in just one step with water as the sole solvent. Its high biocompatibility and low toxicity was demonstrated in vitro and in vivo. In mouse xenograft model of oral squamous cell carcinoma (OSCC), SNNP loaded with 5-fluoro-uracile (5-FU-SNNP) remarkably retarded the tumor growth compared with free 5-FU, albeit SNNP alone showed no antitumor effect. The stability in blood circulation and the effective concentration of 5-FU in tumor tissue were increased upon the loading with SNNP. TUNEL and immunohistochemistry analyses further indicated that the superior in vivo antitumor efficacy of 5-FU-SNNP compared to free 5-FU was associated with an enhanced degree of inhibition of cell proliferation and stimulation of cell apoptosis. Furthermore, SNNP alleviated the toxic side effects of 5-FU. These findings suggested that when loaded with SNNP, 5-FU has better antitumor efficacy and lower side effects, indicating that SNNP can efficiently act as a readily accessible, robust, biocompatible and low-toxic nanobiomaterial which may find wide therapeutic applications clinically in the future.
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Affiliation(s)
- Hang Zhao
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Institute for Nanobiomedical Technology and Membrane Biology, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Hui Feng
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- XiangYa Stomatological Hospital, Central South University, Changsha, Hunan 410000, P. R. China
| | - Dongjuan Liu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Jiang Liu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Institute for Nanobiomedical Technology and Membrane Biology, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Ning Ji
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Fangman Chen
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Xiaobo Luo
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Yu Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Hongxia Dan
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Xin Zeng
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Jing Li
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Congkui Sun
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Jinyu Meng
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Xiaojie Ju
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Min Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Hanshuo Yang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and Collaborative Innovation Center for Biotherapy, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Longjiang Li
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Xinhua Liang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Liangyin Chu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Lu Jiang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Yang He
- Institute for Nanobiomedical Technology and Membrane Biology, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P. R. China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, P. R. China
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55
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Ciobanu CS, Groza A, Iconaru SL, Popa CL, Chapon P, Chifiriuc MC, Hristu R, Stanciu GA, Negrila CC, Ghita RV, Ganciu M, Predoi D. Antimicrobial Activity Evaluation on Silver Doped Hydroxyapatite/Polydimethylsiloxane Composite Layer. BIOMED RESEARCH INTERNATIONAL 2015; 2015:926513. [PMID: 26504849 PMCID: PMC4609430 DOI: 10.1155/2015/926513] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 05/26/2015] [Indexed: 11/17/2022]
Abstract
The goal of this study was the preparation, physicochemical characterization, and microbiological evaluation of novel hydroxyapatite doped with silver/polydimethylsiloxane (Ag:HAp-PDMS) composite layers. In the first stage, the deposition of polydimethylsiloxane (PDMS) polymer layer on commercially pure Si disks has been produced in atmospheric pressure corona discharges. Finally, the new silver doped hydroxyapatite/polydimethylsiloxane composite layer has been obtained by the thermal evaporation technique. The Ag:HAp-PDMS composite layers were characterized by various techniques, such as Scanning Electron Microscopy (SEM), Glow Discharge Optical Emission Spectroscopy (GDOES), and X-ray photoelectron spectroscopy (XPS). The antimicrobial activity of the Ag:HAp-PDMS composite layer was assessed against Candida albicans ATCC 10231 (ATCC-American Type Culture Collection) by culture based and confirmed by SEM and Confocal Laser Scanning Microscopy (CLSM) methods. This is the first study reporting the antimicrobial effect of the Ag:HAp-PDMS composite layer, which proved to be active against Candida albicans biofilm embedded cells.
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Affiliation(s)
- C. S. Ciobanu
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
| | - A. Groza
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania
| | - S. L. Iconaru
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
| | - C. L. Popa
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
- Faculty of Physics, University of Bucharest, 405 Atomistilor Street, P.O. Box MG1, 077125 Magurele, Romania
| | - P. Chapon
- Horiba Jobin Yvon SAS, 16-18 Rue du Canal, 91165 Longjumeau Cedex, France
| | - M. C. Chifiriuc
- Microbiology Department, Faculty of Biology, University of Bucharest, 1–3 Portocalelor Lane, Sector 5, 77206 Bucharest, Romania
- Earth, Environmental and Life Sciences Section, Research Institute of the University of Bucharest, 1–3 Portocalelor Lane, Sector 5, 77206 Bucharest, Romania
| | - R. Hristu
- Center for Microscopy-Microanalysis and Information Processing, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
| | - G. A. Stanciu
- Center for Microscopy-Microanalysis and Information Processing, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
| | - C. C. Negrila
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
| | - R. V. Ghita
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
| | - M. Ganciu
- National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, P.O. Box MG 36, 077125 Magurele, Romania
| | - D. Predoi
- National Institute for Materials Physics, P.O. Box MG 07, 077125 Magurele, Romania
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56
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Abdul Karim A, Loh XJ. Design of a micellized α-cyclodextrin based supramolecular hydrogel system. SOFT MATTER 2015; 11:5425-5434. [PMID: 26053135 DOI: 10.1039/c5sm00665a] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In recent years supramolecular structures built from macrocyclic compounds have attracted tremendous interest due to the unique properties derived from dynamic self-assembly. Our study proposes a two-step mechanism to form a supramolecular hydrogel system: (1) the formation of micelles, and (2) micelle association with α-cyclodextrin (α-CD) due to threading of PEGMA in the α-CD cavity, forming inclusion complexes. Using this mechanism, a supramolecular hydrogel made from a tri-component copolymer PLLA/DMAEMA/PEGMA and α-CD was fabricated for the first time and characterized in terms of its structural, morphological, and rheological properties.
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Affiliation(s)
- Anis Abdul Karim
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore.
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57
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Magnesium complexes of the N, O polydentate scaffold: Synthesis, structural characterization and polymerization studies. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.06.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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58
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Tolpygin AO, Cherkasov AV, Fukin GK, Trifonov AA. Yttrium and ytterbium(III) complexes with ansa-linked bis(amidinate) ligand containing conformationally rigid o-phenylene bridge. Russ Chem Bull 2015. [DOI: 10.1007/s11172-014-0738-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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59
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Cao PF, Mangadlao JD, de Leon A, Su Z, Advincula RC. Catenated Poly(ε-caprolactone) and Poly(l-lactide) via Ring-Expansion Strategy. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00470] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Peng-Fei Cao
- Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Joey Dacula Mangadlao
- Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Al de Leon
- Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Zhe Su
- Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Rigoberto C. Advincula
- Department of Macromolecular
Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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60
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Pan G, Liu S, Zhao X, Zhao J, Fan C, Cui W. Full-course inhibition of biodegradation-induced inflammation in fibrous scaffold by loading enzyme-sensitive prodrug. Biomaterials 2015; 53:202-10. [DOI: 10.1016/j.biomaterials.2015.02.078] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 02/13/2015] [Accepted: 02/19/2015] [Indexed: 01/08/2023]
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61
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Zhao S, Wang D, Zhang K, Zhang H. Simple Fabrication of Glutathione-Responsive PEGylated Micellar Nanocarriers for Dual Drugs Delivery. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2015.1030649] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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62
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Silverstein J, Barreto O, França R. Miniscrews for orthodontic anchorage: nanoscale chemical surface analyses. Eur J Orthod 2015; 38:146-53. [PMID: 25770941 DOI: 10.1093/ejo/cjv007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES The goal of this study was to determine the chemical composition of the passivation layer of three clinically available orthodontic miniscrews at different depths. MATERIALS AND METHODS The miniscrews used were Aarhus Mini-Implant (AAR), IMTEC Ortho (IMT), and VectorTAS (VEC). The chemical compositions of the as-received miniscrews were determined by X-ray photoelectron spectroscopy (XPS). Data was acquired before etching the miniscrews with argon, as well as after etching at depths of 10 nm, 20 nm, 30 nm, and 80 nm. RESULTS The elements found in all miniscrews were mainly C, O, and Ti. Also found were other metals in small amounts, and other trace elements. All three miniscrews showed very different characteristics in surface composition. IMT had the greatest increase in Ti, as well as the most titanium metal at 80 nm. VEC remained stable at all tested depths and contained no titanium metal at 80 nm. AAR was an intermediate between the two. CONCLUSIONS The passivation layer of the orthodontic miniscrews has different compositions depending on the brand, as well as the depth analyzed. VEC appeared to have the largest passivation layer, and IMT appeared to have the thinnest passivation layer.
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Affiliation(s)
- Justin Silverstein
- *Dental Biomaterials Research Laboratory, Department of Restorative Dentistry
| | - Osmar Barreto
- **Division of Orthodontics, Department of Preventive Dental Sciences, College of Dentistry, Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
| | - Rodrigo França
- *Dental Biomaterials Research Laboratory, Department of Restorative Dentistry,
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63
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Yin L, Chen Y, Zhang Z, Yin Q, Zheng N, Cheng J. Biodegradable micelles capable of mannose-mediated targeted drug delivery to cancer cells. Macromol Rapid Commun 2015; 36:483-9. [PMID: 25619623 PMCID: PMC4486258 DOI: 10.1002/marc.201400650] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 12/16/2014] [Indexed: 12/31/2022]
Abstract
A targeted micellar drug delivery system is developed from a biocompatible and biodegradable amphiphilic polyester, poly(Lac-OCA)-b-(poly(Tyr(alkynyl)-OCA)-g-mannose) (PLA-b-(PTA-g-mannose), that is synthesized via controlled ring-opening polymerization of O-carboxyanhydride (OCA) and highly efficient "Click" chemistry. Doxorubicin (DOX), a model lipophilic anticancer drug, can be effectively encapsulated into the micelles, and the mannose moiety allows active targeting of the micelles to cancer cells that specifically express mannose receptors, which thereafter enhances the anticancer efficiency of the drug. Comprised entirely of biodegradable and biocompatible polyesters, this micellar system demonstrates promising potentials for targeted drug delivery and cancer therapy.
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Affiliation(s)
- Lichen Yin
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou, Nano Science and Technology, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Yongbing Chen
- Department of Cardiothoracic Surgery, the Second Affiliated Hospital of Soochow University, Suzhou, 215004, Jiangsu, China
| | - Zhonghai Zhang
- Department of Materials Science and Engineering, University of Illinois, Urbana-Champaign, 1304 W. Green Street, Urbana, IL 61801, USA
| | - Qian Yin
- Department of Materials Science and Engineering, University of Illinois, Urbana-Champaign, 1304 W. Green Street, Urbana, IL 61801, USA
| | - Nan Zheng
- Department of Materials Science and Engineering, University of Illinois, Urbana-Champaign, 1304 W. Green Street, Urbana, IL 61801, USA
| | - Jianjun Cheng
- Department of Materials Science and Engineering, University of Illinois, Urbana-Champaign, 1304 W. Green Street, Urbana, IL 61801, USA
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64
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65
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Yu G, Jie K, Huang F. Supramolecular Amphiphiles Based on Host–Guest Molecular Recognition Motifs. Chem Rev 2015; 115:7240-303. [DOI: 10.1021/cr5005315] [Citation(s) in RCA: 766] [Impact Index Per Article: 85.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Guocan Yu
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Kecheng Jie
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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66
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Cui Y, Gu W, Wang Y, Zhao B, Yao Y, Shen Q. Synthesis and characterization of rare-earth metal complexes supported by a new pentadentate Schiff base and their application in heteroselective polymerization of rac-lactide. Catal Sci Technol 2015. [DOI: 10.1039/c5cy00322a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Both rare-earth metal salen aryloxides and amides can efficiently initiate the ring-opening polymerization of rac-lactide to give heterotactic-rich polylactides.
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Affiliation(s)
- Yu Cui
- Key Laboratory of Organic Synthesis of Jiangsu Province and Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- College of Chemistry, Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Weikai Gu
- Key Laboratory of Organic Synthesis of Jiangsu Province and Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- College of Chemistry, Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Yaorong Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province and Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- College of Chemistry, Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Bei Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province and Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- College of Chemistry, Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Yingming Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province and Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- College of Chemistry, Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Qi Shen
- Key Laboratory of Organic Synthesis of Jiangsu Province and Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- College of Chemistry, Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
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67
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Chen YH, Chen YJ, Tseng HC, Lian CJ, Tsai HY, Lai YC, Hsu SCN, Chiang MY, Chen HY. Comparing l-lactide and ε-caprolactone polymerization by using aluminum complexes bearing ketiminate ligands: steric, electronic, and chelating effects. RSC Adv 2015. [DOI: 10.1039/c5ra15530d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Herein, the l-lactide polymerization rate of a series of Al complexes bearing ketimine ligands was investigated, and the polymerization characteristics between l-lactide and ε-caprolactone were compared.
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Affiliation(s)
- Yu-Hsieh Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Yen-Jen Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Hsi-Ching Tseng
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Cheng-Jie Lian
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Hsin-Yi Tsai
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Yi-Chun Lai
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Sodio C. N. Hsu
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Michael Y. Chiang
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
- Department of Chemistry
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
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68
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Ou HW, Chiang MY, Vandavasi JK, Lu WY, Chen YJ, Tseng HC, Lai YC, Chen HY. Comparative study of ring-opening polymerization of l-lactide and ε-caprolactone using zirconium hexadentate bis(aminophenolate) complexes as catalysts. RSC Adv 2015. [DOI: 10.1039/c4ra13236j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of zirconium bis(aminophenolate) complexes as catalysts for the ring opening polymerization of l-lactide (LA) and ε-caprolactone (CL) were investigated.
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Affiliation(s)
- Hsiu-Wei Ou
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Michael Y. Chiang
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
- Department of Chemistry
| | - Jaya Kishore Vandavasi
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Wei-Yi Lu
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Yen-Jen Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Hsi-Ching Tseng
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Yi-Chun Lai
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
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69
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Galkina OL, Ivanov VK, Agafonov AV, Seisenbaeva GA, Kessler VG. Cellulose nanofiber–titania nanocomposites as potential drug delivery systems for dermal applications. J Mater Chem B 2015; 3:1688-1698. [DOI: 10.1039/c4tb01823k] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Nanocomposites with potential for dermal drug delivery have been developed using nanotitania chemically grafted onto nanocellulose as an active ingredient for enhanced uptake and controlled release of model drug loads.
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Affiliation(s)
- O. L. Galkina
- Institute of Solution Chemistry of the Russian Academy of Sciences
- Ivanovo, Russia
- Department of Chemistry and Biotechnology
- Swedish University of Agricultural Sciences
- 750 07 Uppsala, Sweden
| | - V. K. Ivanov
- Kurnakov Institute of General and Inorganic Chemistry
- Moscow, Russia
- National Research Tomsk State University
- Tomsk, Russia
| | - A. V. Agafonov
- Institute of Solution Chemistry of the Russian Academy of Sciences
- Ivanovo, Russia
| | - G. A. Seisenbaeva
- Department of Chemistry and Biotechnology
- Swedish University of Agricultural Sciences
- 750 07 Uppsala, Sweden
- CaptiGel AB
- 75450 Uppsala, Sweden
| | - V. G. Kessler
- Department of Chemistry and Biotechnology
- Swedish University of Agricultural Sciences
- 750 07 Uppsala, Sweden
- CaptiGel AB
- 75450 Uppsala, Sweden
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70
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Jäger E, Donato RK, Perchacz M, Jäger A, Surman F, Höcherl A, Konefał R, Donato KZ, Venturini CG, Bergamo VZ, Schrekker HS, Fuentefria AM, Raucci MG, Ambrosio L, Štěpánek P. Biocompatible succinic acid-based polyesters for potential biomedical applications: fungal biofilm inhibition and mesenchymal stem cell growth. RSC Adv 2015. [DOI: 10.1039/c5ra15858c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Poly(alkene succinates) are promising materials for specialized medical devices and tissue engineering, presenting intrinsic properties, such as; fungal biofilm inhibition, biocompatibility and stem cells controlled growth promotion.
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71
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Tseng HC, Chiang MY, Lu WY, Chen YJ, Lian CJ, Chen YH, Tsai HY, Lai YC, Chen HY. A closer look at ε-caprolactone polymerization catalyzed by alkyl aluminum complexes: the effect of induction period on overall catalytic activity. Dalton Trans 2015; 44:11763-73. [DOI: 10.1039/c5dt01563d] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Previous studies on the ring-opening polymerization of ε-caprolactone using structurally related aluminum complexes as pre-catalysts showed inconsistent trends in the total conversion time.
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Affiliation(s)
- Hsi-Ching Tseng
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- R.O.C
| | - Michael Y. Chiang
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- R.O.C
- Department of Chemistry
| | - Wei-Yi Lu
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- R.O.C
| | - Yen-Jen Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- R.O.C
| | - Cheng-Jie Lian
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- R.O.C
| | - Yu-Hsieh Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- R.O.C
| | - Hsin-Yi Tsai
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- R.O.C
| | - Yi-Chun Lai
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- R.O.C
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- R.O.C
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72
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Chen M, Zhu X, Yan D. A controlled release system for simultaneous promotion of gene transfection and antitumor effects. RSC Adv 2014. [DOI: 10.1039/c4ra10447a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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73
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Wang D, Xu Z, Chen Z, Liu X, Hou C, Zhang X, Zhang H. Fabrication of single-hole glutathione-responsive degradable hollow silica nanoparticles for drug delivery. ACS APPLIED MATERIALS & INTERFACES 2014; 6:12600-12608. [PMID: 24992262 DOI: 10.1021/am502585x] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the present study, a kind of single-hole glutathione (GSH)-responsive degradable hollow silica nanoparticles (G-DHSNs) was synthesized and used as carriers of doxorubicin (DOX) (DOX-G-DHSNs). The G-DHSNs were accurately designed and fabricated with a simple and convenient method, and without any extra pernicious component. The composition, morphology and properties of the G-DHSNs had been characterized by (1)HNMR spectra, Fourier transform infrared spectrograph, thermo gravimetric analysis, transmission electron microscope, and scanning electron microscope. The degradation study of G-DHSNs showed that the G-DHSNs would be broken into pieces after interacting with GSH. Besides, the negligible hemolytic activity and low cytotoxicity of the G-DHSNs demonstrated its excellent biocompatibility. pH- and GSH-triggered release of DOX followed by the decomposition of G-DHSNs within TCA8113 cancer cells was further confirmed by flow cytometry and confocal laser scanning microscopy studies. All of these results indicated that G-DHSNs can be used as safe and promising drug nanocarriers.
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Affiliation(s)
- Dongdong Wang
- State Key Laboratory of Applied Organic Chemistry and ‡Institute of Physiology, School of Basic Medical Sciences, Lanzhou University , Lanzhou 730000, China
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74
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A micro- and nano-structured drug carrier based on biocompatible, hybrid polymeric nanoparticles for potential application in dry powder inhalation therapy. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.06.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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75
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Salahuddin N, Elbarbary A, Allam NG, Hashim AF. Polyamide-montmorillonite nanocomposites as a drug delivery system: Preparation, release of 1,3,4-oxa(thia)diazoles, and antimicrobial activity. J Appl Polym Sci 2014. [DOI: 10.1002/app.41177] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nehal Salahuddin
- Department of Chemistry, Faculty of Science; Tanta University; Tanta 31527 Egypt
| | - Ahmed Elbarbary
- Department of Chemistry, Faculty of Science; Tanta University; Tanta 31527 Egypt
| | - Nanis G. Allam
- Department of Botany, Faculty of Science; Tanta University; Tanta 31527 Egypt
| | - Ayat F. Hashim
- Plant Pathology Research Institute, Agricultural Research Center; Giza Egypt
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76
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Felice B, Prabhakaran MP, Rodríguez AP, Ramakrishna S. Drug delivery vehicles on a nano-engineering perspective. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 41:178-95. [PMID: 24907751 DOI: 10.1016/j.msec.2014.04.049] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 03/04/2014] [Accepted: 04/18/2014] [Indexed: 12/21/2022]
Abstract
Nanoengineered drug delivery systems (nDDS) have been successfully used as clinical tools for not only modulation of pharmacological drug release profile but also specific targeting of diseased tissues. Until now, encapsulation of anti-cancer molecules such as paclitaxel, vincristin and doxorubicin has been the main target of nDDS, whereby liposomes and polymer-drug conjugates remained as the most popular group of nDDS used for this purpose. The success reached by these nanocarriers can be imitated by careful selection and optimization of the different factors that affect drug release profile (i.e. type of biomaterial, size, system architecture, and biodegradability mechanisms) along with the selection of an appropriate manufacture technique that does not compromise the desired release profile, while it also offers possibilities to scale up for future industrialization. This review focuses from an engineering perspective on the different parameters that should be considered before and during the design of new nDDS, and the different manufacturing techniques available, in such a way to ensure success in clinical application.
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Affiliation(s)
- Betiana Felice
- Laboratorio de Medios e Interfases, Departamento de Bioingeniería, Universidad Nacional de Tucumán, Av. Kirchner 1800, Tucumán, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, Buenos Aires, Argentina.; START - Thrust 3, Create Research Wing, #03-08, 1 Create Way, National University of Singapore, Singapore 138602
| | - Molamma P Prabhakaran
- START - Thrust 3, Create Research Wing, #03-08, 1 Create Way, National University of Singapore, Singapore 138602.
| | - Andrea P Rodríguez
- Laboratorio de Medios e Interfases, Departamento de Bioingeniería, Universidad Nacional de Tucumán, Av. Kirchner 1800, Tucumán, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, Buenos Aires, Argentina
| | - Seeram Ramakrishna
- START - Thrust 3, Create Research Wing, #03-08, 1 Create Way, National University of Singapore, Singapore 138602; Department of Mechanical Engineering, National University of Singapore, Singapore
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77
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Della Monica F, Luciano E, Roviello G, Grassi A, Milione S, Capacchione C. Group 4 Metal Complexes Bearing Thioetherphenolate Ligands. Coordination Chemistry and Ring-Opening Polymerization Catalysis. Macromolecules 2014. [DOI: 10.1021/ma5003358] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Francesco Della Monica
- Department
of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132 Fisciano I-84084, Salerno, Italy
| | - Ermanno Luciano
- Department
of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132 Fisciano I-84084, Salerno, Italy
| | - Giuseppina Roviello
- Department
of Engeneering, University of Naples, Parthenope Centro Direzionale Napoli Isola C4, 80143 Napoli, Italy
| | - Alfonso Grassi
- Department
of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132 Fisciano I-84084, Salerno, Italy
| | - Stefano Milione
- Department
of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132 Fisciano I-84084, Salerno, Italy
| | - Carmine Capacchione
- Department
of Chemistry and Biology, University of Salerno, via Giovanni Paolo II, 132 Fisciano I-84084, Salerno, Italy
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78
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Bulk polymerization of rac-lactide initiated by guanidinate alkoxide complexes of rare earth metals. The molecular structure of the cluster [{(Me3Si)2NC(NPri)2}Nd]4(μ3-OPri)8Li7(μ2-Cl)3(μ3-Cl)2(μ4-Cl)2. Russ Chem Bull 2014. [DOI: 10.1007/s11172-013-0099-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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79
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Wojtaszak J, Mierzwicki K, Szafert S, Gulia N, Ejfler J. Homoleptic aminophenolates of Zn, Mg and Ca. Synthesis, structure, DFT studies and polymerization activity in ROP of lactides. Dalton Trans 2014; 43:2424-36. [DOI: 10.1039/c3dt52868e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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80
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Muromachi S, Abe T, Yamamoto Y, Takeya S. Hydration structures of lactic acid: characterization of the ionic clathrate hydrate formed with a biological organic acid anion. Phys Chem Chem Phys 2014; 16:21467-72. [DOI: 10.1039/c4cp03444a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lactic acid is incorporated in the ionic clathrate hydrate showing various water clustering patterns.
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Affiliation(s)
- Sanehiro Muromachi
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba 305-8569, Japan
| | - Toru Abe
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba 305-8569, Japan
- College of Industrial Technology
- Nihon University
- Narashino 275-8575, Japan
| | - Yoshitaka Yamamoto
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba 305-8569, Japan
| | - Satoshi Takeya
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba 305-8569, Japan
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81
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Archibald SJ, Atkin SL, Bras W, Diego-Taboada A, Mackenzie G, Mosselmans JFW, Nikitenko S, Quinn PD, Thomas MF, Young NA. How does iron interact with sporopollenin exine capsules? An X-ray absorption study including microfocus XANES and XRF imaging. J Mater Chem B 2014; 2:945-959. [DOI: 10.1039/c3tb21523g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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82
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Su LC, Chen YH, Chen MC. Dual drug-eluting stents coated with multilayers of hydrophobic heparin and sirolimus. ACS APPLIED MATERIALS & INTERFACES 2013; 5:12944-12953. [PMID: 24294944 DOI: 10.1021/am403615q] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Polymer coatings for stents are considered one of the key factors that lead to adverse cardiac events after coronary arterial stenting. This study presents a dual drug-eluting stent (DES) that is coated with multilayers of Duraflo heparin and sirolimus but containing no other organic polymers. The hydrophobic Duraflo heparin coating was used to improve the hemocompatibility of the stent and serve as a drug reservoir for the controlled release of sirolimus, thus avoiding inflammatory reactions induced by the conventional polymers. The Duraflo heparin and sirolimus were coated layer-by-layer onto the stent surface using a homemade spray-coating device. The drug loading amount can be easily controlled by adjusting the numbers of layers applied and the concentration of the drug solution, indicating the developed coating process is reproducible and well-controlled. After balloon expansion, the coating did not crack or peel off, which demonstrates that the sirolimus/Duraflo heparin coating layers tightly adhere to the stent surface. The activated partial thromboplastin time (APTT) assay showed that the Duraflo heparin coating significantly prolonged the APTT from 27.3 ± 0.3 s to 69.7 ± 6.2 s, demonstrating the anticoagulant ability of the coated stents. The dual DES exhibited a nearly linear sustained-release profile of Duraflo heparin and an initial burst release followed by a slow release of sirolimus. Less than 15% of heparin was released from the DES within 14 days, indicating the stent can maintain its antithrombotic surface for a long time. Because of the layer-by-layer structure, the most outer layer of Duraflo heparin coating may act as a diffusion barrier to retard sirolimus release from the stent. These results confirm that the dual DESs enable simultaneous delivery of antithrombotic and antiproliferative drugs and have potential for the treatment of coronary artery disease.
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Affiliation(s)
- Liang-Cheng Su
- Department of Chemical Engineering and ‡Department of Biochemistry and Molecular Biology, National Cheng Kung University , Tainan, Taiwan
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83
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Degradation of thin poly(lactic acid) films: Characterization by capacitance–voltage, atomic force microscopy, scanning electron microscopy and contact-angle measurements. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.08.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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84
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Poly(l-lactide) initiated by silver N-heterocyclic carbene complexes: synthesis, characterization and properties. Polym Bull (Berl) 2013. [DOI: 10.1007/s00289-013-1034-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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85
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Yang G, Gai S, Qu F, Yang P. SiO2@YBO3:Eu3+ hollow mesoporous spheres for drug delivery vehicle. ACS APPLIED MATERIALS & INTERFACES 2013; 5:5788-5796. [PMID: 23705794 DOI: 10.1021/am401349z] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A novel bifunctional (fluorescent, mesoporous) hollow sphere was prepared by coating luminescent YBO3:Eu(3+) nanoparticles onto uniform hollow mesoporous silica spheres (HMSs), derived from an etching strategy using spherical Fe3O4 as templates. The composites exhibit typical mesoporous shells, large interior space, high surface area, and well dispersed nanospheres with controlled size. In addition, the textural properties including the specific surface and pore volume can be easily altered by simply tuning of the spherical Fe3O4 cores. Upon ultraviolet (UV) excitation, the composite shows the characteristic (5)D0-(7)F1-4 red emission lines of Eu(3+) even after loading of the model drug. The composite with a large surface area and cavity was used as the host for loading the anticancer drug doxorubicin hydrochloride (DOX). It is observed that the multifunctional composites exhibit an obvious sustained release property and released in texture- and pH-sensitive patterns. Particularly, the down-conversion (DC) fluorescence intensity of the bifunctional vehicle increases with the release of drug molecules, making it possible to track the position and the drug release amount of the drug carrier system and to detect them by the change of fluorescence intensity.
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Affiliation(s)
- Guixin Yang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, PR China
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86
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Ozbolat IT, Marchany M, Gardella JA, Koc B. Computer-Aided 4D Modeling of Hydrolytic Degradation in Micropatterned Bioresorbable Membranes. J Med Device 2013. [DOI: 10.1115/1.4024158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Real-time degradation studies of bioresorbable polymers can take weeks, months, and even years to conduct. For this reason, developing and validating mathematical models that describe and predict degradation can provide a means to accelerate the development of materials and devices for controlled drug release. This study aims to develop and experimentally validate a computer-aided model that simulates the hydrolytic degradation kinetics of bioresorbable polymeric micropatterned membranes for tissue engineering applications. Specifically, the model applies to circumstances that are conducive for the polymer to undergo surface erosion. The developed model provides a simulation tool enabling the prediction and visualization of the dynamic geometry of the degrading membrane. In order to validate the model, micropatterned polymeric membranes were hydrolytically degraded in vitro and the morphological changes were analyzed using optical microscopy. The model is then extended to predict spatiotemporal degradation kinetics of variational micropatterned architectures.
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Affiliation(s)
- Ibrahim T. Ozbolat
- Department of Mechanical and Industrial Engineering, Biomanufacturing Laboratory, Center for Computer-Aided Design, The University of Iowa, Iowa, IA 52242 e-mail:
| | | | - Joseph A. Gardella
- Department of Chemistry, University at Buffalo, 359 Natural Sciences Complex, Buffalo, NY 14260
| | - Bahattin Koc
- Faculty of Engineering and Natural Sciences, Sabanci University, FENS G013 Tuzla, Istanbul 34956, Turkey
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87
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Yang P, Yang W. Surface Chemoselective Phototransformation of C–H Bonds on Organic Polymeric Materials and Related High-Tech Applications. Chem Rev 2013; 113:5547-94. [PMID: 23614481 DOI: 10.1021/cr300246p] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Peng Yang
- Key Laboratory
of Applied Surface
and Colloid Chemistry, Ministry of Education, College of Chemistry
and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Wantai Yang
- The State Key Laboratory of
Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing
100029, China
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88
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Sawada T, Mihara H, Serizawa T. Peptides as New Smart Bionanomaterials: Molecular-Recognition and Self-Assembly Capabilities. CHEM REC 2013; 13:172-86. [DOI: 10.1002/tcr.201200020] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Indexed: 12/14/2022]
Affiliation(s)
- Toshiki Sawada
- Department of Organic and Polymeric Materials; Tokyo Institute of Technology; 2-12-1-H121 Ookayama; Meguro-ku; Tokyo; Japan
| | - Hisakazu Mihara
- Department of Bioengineering; Tokyo Institute of Technology; 4259-B40 Nagatsuta-cho, Midori-ku; Yokohama; Japan
| | - Takeshi Serizawa
- Department of Organic and Polymeric Materials; Tokyo Institute of Technology; 2-12-1-H121 Ookayama; Meguro-ku; Tokyo; Japan
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89
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Kafouris D, Kossivas F, Constantinides C, Nguyen NQ, Wesdemiotis C, Patrickios CS. Biosourced Amphiphilic Degradable Elastomers of Poly(glycerol sebacate): Synthesis and Network and Oligomer Characterization. Macromolecules 2013. [DOI: 10.1021/ma3016882] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Demetris Kafouris
- Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia,
Cyprus
| | - Fotis Kossivas
- Department of Mechanical
and
Manufacturing Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia Cyprus
| | - Christakis Constantinides
- Department of Mechanical
and
Manufacturing Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia Cyprus
| | - Nhu Quynh Nguyen
- Department of Chemistry and Integrated
Biosciences Program, University of Akron, Akron, Ohio 44325-3601, United States
| | - Chrys Wesdemiotis
- Department of Chemistry and Integrated
Biosciences Program, University of Akron, Akron, Ohio 44325-3601, United States
| | - Costas S. Patrickios
- Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia,
Cyprus
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90
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Zhang Z, Yin L, Tu C, Song Z, Zhang Y, Xu Y, Tong R, Zhou Q, Ren J, Cheng J. Redox-Responsive, Core Cross-Linked Polyester Micelles. ACS Macro Lett 2013; 2:40-44. [PMID: 23536920 PMCID: PMC3606897 DOI: 10.1021/mz300522n] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Monomethoxy poly(ethylene glycol)-b-poly(Tyr(alkynyl)-OCA), a biodegradable amphiphilic block copolymer, was synthesized by means of ring-opening polymerization of 5-(4-(prop-2-yn-1-yloxy)benzyl)-1,3-dioxolane-2,4-dione (Tyr(alkynyl)-OCA) and used to prepare core cross-linked polyester micelles via click chemistry. Core cross-linking not only improved the structural stability of the micelles but also allowed controlled release of cargo molecules in response to the reducing reagent. This new class of core cross-linked micelles can potentially be used in controlled release and drug delivery applications.
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Affiliation(s)
- Zhonghai Zhang
- Department of Materials Science and Engineering, University of Illinois at Urbana–Champaign, 1304 W. Green Street, Urbana, IL, 61801, USA
- Institute of Nano- and Bio-polymeric Materials, School of Material Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Lichen Yin
- Department of Materials Science and Engineering, University of Illinois at Urbana–Champaign, 1304 W. Green Street, Urbana, IL, 61801, USA
| | - Chunlai Tu
- Department of Materials Science and Engineering, University of Illinois at Urbana–Champaign, 1304 W. Green Street, Urbana, IL, 61801, USA
| | - Ziyuan Song
- Department of Materials Science and Engineering, University of Illinois at Urbana–Champaign, 1304 W. Green Street, Urbana, IL, 61801, USA
| | - Yanfeng Zhang
- Department of Materials Science and Engineering, University of Illinois at Urbana–Champaign, 1304 W. Green Street, Urbana, IL, 61801, USA
| | - Yunxiang Xu
- Department of Materials Science and Engineering, University of Illinois at Urbana–Champaign, 1304 W. Green Street, Urbana, IL, 61801, USA
| | - Rong Tong
- Department of Materials Science and Engineering, University of Illinois at Urbana–Champaign, 1304 W. Green Street, Urbana, IL, 61801, USA
| | - Qin Zhou
- Department of Materials Science and Engineering, University of Illinois at Urbana–Champaign, 1304 W. Green Street, Urbana, IL, 61801, USA
- Department of Pharmaceutical Science, Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Jie Ren
- Institute of Nano- and Bio-polymeric Materials, School of Material Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Jianjun Cheng
- Department of Materials Science and Engineering, University of Illinois at Urbana–Champaign, 1304 W. Green Street, Urbana, IL, 61801, USA
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91
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Parmar AV, Bahadur A, Kuperkar K, Bahadur P. PEO–PPO based star-block copolymer T904 as pH responsive nanocarriers for quercetin: Solubilization and release study. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2012.10.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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92
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Mazzeo M, Tramontano R, Lamberti M, Pilone A, Milione S, Pellecchia C. Rare earth complexes of phenoxy-thioether ligands: synthesis and reactivity in the ring opening polymerization of cyclic esters. Dalton Trans 2013; 42:9338-51. [DOI: 10.1039/c3dt00066d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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93
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Gao Y, Wang Y, Jiang M, Chen D. Cascade Molecule-Particle-Molecule Self-Assemblies for Fabricating Narrowly Size-Distributed Polymeric Superparticles with a Bicontinuous Nanostructure. ACS Macro Lett 2012; 1:1312-1316. [PMID: 35607163 DOI: 10.1021/mz300418b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Broader developments of nanoscience and nanotechnology require complexly but regularly structured nanoparticles whose fabrications in turn pose a great challenge to nanoscience and nanotechnology. In this communication, we report a new and robust method with a clear mechanism for fabricating narrowly size-distributed superparticles with a bicontinuous inner structure. The processes for the fabrication include: molecular self-assembly of a triblock copolymer in its selective solvent into the core-shell-corona micelles, the self-limited aggregation of the micelles (particles) into narrowly size-distributed superparticles constructed by the integrated micelles, and the final molecular self-assembly confined within the superparticles into cylinders that are crowded and interconnected to form the bicontinuous nanostructure; the molecular self-assembly into the micelles, the self-limited aggregation of the particles (i.e., the micelles), and the further molecular self-assembly within the superparticles occurred in a cascade manner.
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Affiliation(s)
- Yong Gao
- State Key Laboratory of Molecular
Engineering of Polymers
and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Yafen Wang
- State Key Laboratory of Molecular
Engineering of Polymers
and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Ming Jiang
- State Key Laboratory of Molecular
Engineering of Polymers
and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Daoyong Chen
- State Key Laboratory of Molecular
Engineering of Polymers
and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
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94
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Chen HY, Lu WY, Chen YJ, Hsu SCN, Ou SW, Peng WT, Jheng NY, Lai YC, Wu BS, Chung H, Chen Y, Huang TC. Synthesis, characterization, and catalytic activity of titanium iminophenoxide complexes in relation to the ring-opening polymerization ofL-lactide and ε-caprolactone. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26381] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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95
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Improving the ring-opening polymerization of ε-caprolactone and l-lactide using stannous octanoate. Polym Bull (Berl) 2012. [DOI: 10.1007/s00289-012-0864-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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96
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97
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Chen HY, Mialon L, Abboud KA, Miller SA. Comparative Study of Lactide Polymerization with Lithium, Sodium, Magnesium, and Calcium Complexes of BHT. Organometallics 2012. [DOI: 10.1021/om300121c] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hsuan-Ying Chen
- The George and Josephine Butler Polymer
Research Laboratory, Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United
States
- Department of Medicinal
and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, R.O.C
| | - Laurent Mialon
- The George and Josephine Butler Polymer
Research Laboratory, Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United
States
| | - Khalil A. Abboud
- The George and Josephine Butler Polymer
Research Laboratory, Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United
States
| | - Stephen A. Miller
- The George and Josephine Butler Polymer
Research Laboratory, Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, United
States
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98
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Fujii S, Okada M, Nishimura T, Maeda H, Sugimoto T, Hamasaki H, Furuzono T, Nakamura Y. Hydroxyapatite-armored poly(ε-caprolactone) microspheres and hydroxyapatite microcapsules fabricated via a Pickering emulsion route. J Colloid Interface Sci 2012; 374:1-8. [DOI: 10.1016/j.jcis.2012.01.058] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 01/21/2012] [Accepted: 01/21/2012] [Indexed: 10/14/2022]
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99
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Ou SW, Lu WY, Chen HY. Tris(1,2-dimeth-oxy-ethane-κO,O')iodidocalcium iodide. Acta Crystallogr Sect E Struct Rep Online 2012; 68:m172. [PMID: 22346847 PMCID: PMC3274900 DOI: 10.1107/s160053681200075x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Accepted: 01/08/2012] [Indexed: 11/10/2022]
Abstract
In the title complex, [CaI(C(4)H(10)O(2))(3)]I, the Ca(II) atom is seven-coordinated by six O atoms from three 1,2-dimeth-oxy-ethane (DME) ligands and one iodide anion in a distorted penta-gonal-bipyramidal geometry. The I atom and one of the O atoms from a DME ligand lie in the axial positions while the other O atoms lie in the basal plane. The other iodide anion is outside the complex cation.
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100
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Wang X, Zhou W, Cao J, Liu W, Zhu S. Preparation of core-shell CaCO3 capsules via Pickering emulsion templates. J Colloid Interface Sci 2012; 372:24-31. [PMID: 22318120 DOI: 10.1016/j.jcis.2012.01.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Revised: 01/05/2012] [Accepted: 01/08/2012] [Indexed: 10/14/2022]
Abstract
Micron size and food grade pristine CaCO(3) particles were used to stabilize an oil in water Pickering emulsion. The particles also acted as nucleation sites for the subsequent crystallization of CaCO(3) with the addition of CaCl(2) and CO(2) gas as precursors. After the controllable crystallization process, a dense CaCO(3) shell with a few microns in thickness was formed. The CaCO(3) shell was proven to be calcite without the presence of crystallization modifiers. The crystallization speed and the shell integrity were controlled by manipulating the addition of CaCl(2) amount during the different crystallization stages; therefore, the homogeneous nucleation in the bulk was almost inhibited, and the heterogeneous nucleation at the oil-water interface on pristine CaCO(3) particles was the main contribution to the growth of the shell. The encapsulated limonene flavor in CaCO(3) capsules showed a prolonged release in neutral water at 85°C, while a burst release at pH 2 water as expected. The method is a simple and scalable process for creating inorganic core-shell capsules and can be used for producing food grade capsules for controlling the flavor release or masking undesirable taste in mouth.
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Affiliation(s)
- Xiaoli Wang
- Unilever R&D Shanghai, 66 Lin Xin Road, Shanghai 200335, PR China
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