A5101524484- Perovskite Materials and Applications
- Conducting polymers and applications
- Polymer Surface Interaction Studies
- Bone Tissue Engineering Materials
- Synthetic Organic Chemistry Methods
- Electrospun Nanofibers in Biomedical Applications
- Transition Metal Oxide Nanomaterials
- 2D Materials and Applications
- Advanced Battery Technologies Research
- Dental Implant Techniques and Outcomes
- Chemical Reactions and Mechanisms
- Advanced Polymer Synthesis and Characterization
- Molecular Junctions and Nanostructures
- Porphyrin and Phthalocyanine Chemistry
- Advancements in Battery Materials
- Quantum Dots Synthesis And Properties
- Photodynamic Therapy Research Studies
- Nanoplatforms for cancer theranostics
- Solid-state spectroscopy and crystallography
- Photopolymerization techniques and applications
University of North Carolina at Chapel Hill
2014-2020
Communities In Schools of Orange County
2014-2019
Two-dimensional perovskites have emerged as more intrinsically stable materials for solar cells. Chemical tuning of spacer organic cations has attracted great interest due to their additional functionalities. However, how the chemical nature affects properties two-dimensional and devices is rarely reported. Here we demonstrate that selection (i.e., selective fluorination phenethylammonium) film perovskites, leading different device performance perovskite cells (average n = 4). Structural...
The replacement of a small amount organic cations with bulkier spacer in the perovskite precursor solution to form 2D passivation agent (2D‐PPA) 3D thin films has recently become promising strategy for developing solar cells (PSCs) long‐term stability and high efficiency. However, long, bulky often barrier, hindering charge transport. Herein, first time, 2D‐PPA engineering based on wide‐bandgap (≈1.68 eV) perovskites are reported. Pentafluorophenethylammonium (F5PEA + ) is introduced...
Two-dimensional (2D) organic–inorganic hybrid perovskites (OIHPs) have showed impressive stability, compared to their three-dimensional (3D) counterparts. However, tuning the chemical structure of organic cations simultaneously improve device performance and stability 2D OIHP solar cells is rarely reported. Here, we demonstrate that by introducing a classic noncovalent aryl-perfluoroaryl interaction, with 1:1 mixed phenethylammonium (PEA) perfluorophenethylammonium (F5-PEA) can achieve an...
A series of polymer micelles with a perfluorocarbon (PFC) core to carry both PS and O<sub>2</sub> tumor sites was prepared. These new PFC formulation not only improved the production <sup>1</sup>O<sub>2</sub> enhanced PDT efficiency, but also significantly reduced cell toxicity compared one without perfluoro unit.
Dopamine, perhaps the simplest molecule that covalently links catechol and amine, together with its derivatives, has shown impressive adhesive coating properties polymers. However, scope of molecules is rather limited, polymerization mechanisms are still elusive. We designed a general synthetic scheme successfully synthesized series dopamine analogues different alkyl chain lengths between amine. Taking these new analogues, molecular systems have separate we show having both amine in system,...
In this report we demonstrate methanol as an effective degenerative chain transfer agent to control the cationic polymerisation (initiated by triflic acid) of electron rich <italic>p</italic>-alkoxy-styrenes, such <italic>p</italic>-methoxystyrene (<italic>p</italic>-MOS).
Passivation Agents In article number 2000082, Fei Zhang, Kai Zhu, and co-workers design a more efficient stable perovskite solar cell by partially replacing phenylethylammonium (PEA+) with pentauorophenethylammonium (F5PEA+) as the 2D passivation agent forming strong noncovalent interaction between two bulky cations, which enhances charge transport, presents highest performance for reported wide-bandgap cells.
To further improve the physical strength and biomedical applicability of bioceramicsbuilt on hydroxyapatite-gelatin (HAp-Gel) siloxane sol-gel reactions, we incorporated mussel adhesive inspired polydopamine (PD) into our original composite based HAp-Gel cross-linked with siloxane. Surprisingly, addition PD, observed that processing conditions temperatures play an important role in structure performance these materials. A systematic study to investigate this temperature dependence behavior...
Event Abstract Back to Effects of dopamine and a analog on polydopamine-laced hydroxyapatite gelatin nanocomposites Huamin Hu1, Jason Dyke1, Feng-Chang Lin2, Hiroshi Tsukamoto3, Wei You1 Ching-Chang Ko4 1 University North Carolina, Chemistry, United States 2 Biostatistics, 3 Nitta Gelatin Inc., Research Department, Japan 4 Department Orthodontics, Introduction: Hydroxyapatite with low endotoxin has been developed mimic the biochemical biomechanical properties natural bone (Chang et al.,...