Search

Your search keyword '"Kipper, Matt"' showing total 496 results
Start Over Author "Kipper, Matt"
496 results on '"Kipper, Matt"'

52. Silicon‐linked polyethylene glycol‐polyethylene terephthalate (PEG‐PET) nanostructures loaded with Eu3+‐complexes for hybrid luminescent PET materials

Author

Peng, Yao, primary, Wang, Yao, additional, Dan, Yingdi, additional, Li, Zengkun, additional, Sun, Quankai, additional, Wang, Yanxin, additional, Wang, Wei, additional, Du, Zhonglin, additional, Huang, Linjun, additional, Kipper, Matt J., additional, Belfiore, Laurence A., additional, and Tang, Jianguo, additional

Published
2023
Full Text
View/download PDF

68. Improved in vitro endothelialization on nanostructured titania with tannin/glycosaminoglycan-based polyelectrolyte multilayers

Author

Sabino, Roberta M., Kipper, Matt J., Martins, Alessandro F., and Popat, Ketul C.

Abstract

Purpose: Blood compatibility of cardiovascular implants is still a major concern. Rapid endothelialization of these implant surfaces has emerged as a promising strategy to enhance hemocompatibility and prevent complications such as thrombus formation and restenosis. The successful endothelialization of implant surfaces mostly depends on the migration of endothelial cells (ECs), the differentiation of stem cells, and the inhibition of smooth muscle cell (SMC) proliferation. Our previous study demonstrated that nanostructured titania surfaces modified with polyelectrolyte multilayers based on tanfloc (a cationic tannin derivative) and glycosaminoglycans (heparin and hyaluronic acid) have improved antithrombogenic properties. Methods: In this work, we used in vitro cell culture of ECs and SMCs to investigate the outcomes of these surface modifications on endothelialization. The cells were seeded on the surfaces, and their viability, adhesion, and proliferation were evaluated after 1, 3, and 5 days. Indirect immunofluorescent staining was used to determine the cellular expression of ECs through the presence of specific marker proteins after 7 and 10 days, and EC migration on the NT surfaces was also investigated. Results: The surfaces modified with tanfloc and heparin showed enhanced EC adhesion, proliferation, and migration. However, SMC proliferation is not promoted by the surfaces. Therefore, these surfaces may promote endothelialization without stimulating SMC proliferation, which could improve the hemocompatibility without enhancing the risk of SMC proliferation leading to restenosis. Conclusions: The surface modification here proposed is a promising candidate to be used in cardiovascular applications due to enhanced antithrombogenic and endothelialization properties.

Published
2024
Full Text
View/download PDF

71. Improved performance for polymer solar cells though photon energy harvesting and down-conversion of Eu3+-induced diblock polymer aggregates (EIPAs).

Author

Long, Zaixin, Li, Shuxin, Shen, Wenfei, Li, Tonghui, Wang, Yao, Guo, Shuhan, Kipper, Matt J., Snow, Christopher Davis, Belfiore, Laurence A., and Tang, Jianguo

Abstract

At present, down-conversion materials and doping active layer materials are effective means to improve the efficiency and stability of polymer solar cells (PSCs). Herein, environmentally friendly and cost-effective Eu3+-induced diblock polymer aggregates (EIPAs) were synthesized by the self-assembly method, and these aggregates were doped into the active layer of various non-fullerene systems, which optimized the morphology and effectively increased the ultraviolet light absorption in the range of 300–450 nm and converted into secondary emission in the visible range. Upon optimization, devices featuring PM6:IT-4F doped with a concentration of 0.2 mg mL−1 EIPAs exhibited a remarkable improvement in power conversion efficiency (PCE) and stability, with a 10.83% increase compared to binary devices, achieving an impressive PCE of 13.82%. This enhanced performance can be attributed to the significant increase in short-circuit current density (JSC) and fill factor (FF) observed in the doped devices. Similar observations have been made with other EIPA-doped devices, further demonstrating the versatility of EIPAs in improving the overall device performance of PSCs. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

81. Poly(ethylene terephthalate) films coated with antimicrobial gelatin/chondroitin sulfate polyelectrolyte multilayers containing ionic liquids

Author

Souza, Paulo R., primary, Vilsinski, Bruno H., additional, de Oliveira, Ariel C., additional, Berton, Sharise B.R., additional, Madruga, Liszt Y.C., additional, Schrekker, Henri S., additional, Radovanovic, Eduardo, additional, Kipper, Matt J., additional, Martins, Alessandro F., additional, and Muniz, Edvani C., additional

Published
2022
Full Text
View/download PDF

98. Heterostructures of Cut Carbon Nanotube-Filled Array of TiO 2 Nanotubes for New Module of Photovoltaic Devices.

Author

Niu, Siqi, Yang, Wenbin, Wei, Heng, Danilov, Michail, Rusetskyi, Ihor, Popat, Ketul C., Wang, Yao, Kipper, Matt J., Belfiore, Laurence A., and Tang, Jianguo

Subjects
MULTIWALLED carbon nanotubes, NANOTUBES, TITANIUM dioxide, CARBON nanotubes, HETEROSTRUCTURES, SCANNING electron microscopy
Abstract

In this work, a new photovoltaic device was prepared. The device uses titanium (Ti) foil/TiO2 nanotubes as the photoanode and multi-walled carbon nanotubes (MWCNTs) as a photosensitizer. Titanium dioxide nanotube arrays (TiO2-NTs) were prepared by one-step anodic oxidation. Cut-MWCNTs with a length of less than 100 nm were obtained by the mixed-acid oxidation of MWCNTs. The two materials were combined to form a TiO2-NTs@cut-MWCNT heterostructure by electrophoresis. TiO2-NTs@cut-MWCNTs were characterized by field-emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD), which showed that the two materials were effectively combined. We fabricated the heterostructure into a photovoltaic device, showing an enhanced photocurrent response and an efficiency of 0.0138%, and explained this phenomenon by performing UV-vis absorption spectroscopy and electrochemical tests. It is hoped that this work can provide a reference value for the application of carbon nanotubes in photovoltaic devices. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results