A5039738985- Quantum Dots Synthesis And Properties
- Algal biology and biofuel production
- Photosynthetic Processes and Mechanisms
- Biocrusts and Microbial Ecology
- Nanocluster Synthesis and Applications
- Bone Tissue Engineering Materials
- Advanced Photocatalysis Techniques
- Polar Research and Ecology
- Spectroscopy and Quantum Chemical Studies
- Calcium Carbonate Crystallization and Inhibition
- Advanced Nanomaterials in Catalysis
- Radioactive element chemistry and processing
- Diatoms and Algae Research
- Perovskite Materials and Applications
- Metal Extraction and Bioleaching
- Advanced Materials Characterization Techniques
- Diverse Educational Innovations Studies
- Carbon and Quantum Dots Applications
- Light effects on plants
- Biotin and Related Studies
- Silicon and Solar Cell Technologies
- Enzyme Production and Characterization
- Advanced Fluorescence Microscopy Techniques
- Copper-based nanomaterials and applications
- Porphyrin Metabolism and Disorders
Virginia Commonwealth University
2023-2025
Princeton University
2021-2024
Massachusetts Institute of Technology
2022
Lehigh University
2016-2019
Bethlehem Area School District
2016-2019
Georgia Institute of Technology
2015
University of Oxford
2015
University of Reading
2015
Drexel University
2014
Biomineralization is demonstrated as a facile aqueous route to the synthesis of PbS and PbS–CdS core–shell quantum dot nanocrystals.
Cryptophyte algae are well-known for their ability to survive under low light conditions using auxiliary harvesting antennas, phycobiliproteins. Mainly acting absorb where chlorophyll cannot (500-650 nm), phycobiliproteins also play an instrumental role in helping cryptophyte respond changes intensity through the process of photoacclimation. Until recently, photoacclimation was only observed as a change cellular concentration phycobiliproteins; however, additional response recently...
This work demonstrates a bioenabled, aqueous phase, room temperature route to synthesize CuInS<sub>2</sub>/ZnS quantum dots conjugated IgG antibodies for fluorescent tagging of THP-1 leukemia cells.
Biomineralization provides a route towards scalable, aqueous phase synthesis of heterostructured photocatalysts for solar driven hydrogen production.
Photosynthetic organisms use light-harvesting complexes to increase the spectrum of light that they absorb from solar photons. Recent ultrafast spectroscopic studies have revealed efficient (sub-ps) energy transfer is mediated by vibronic coherence in phycobiliprotein phycocyanin 645 (PC645). Here, we report employ broadband pump-probe spectroscopy with linearly chirped excitation pulses further investigate relationship between state preparation and dynamics PC645. Negatively pulse found...
Lithium is a critical mineral in wide range of current technologies, and demand continues to grow with the transition green economy. Current lithium mining extraction practices are often highly ecologically damaging, part due large amount water energy they consume. Biomineralization natural process that transforms inorganic precursors minerals. Microbial biomineralization has potential as an ecofriendly alternative techniques. This work demonstrates
Traditional quantum dot synthesis techniques rely on the separation of nucleation and growth to control nanocrystal size. Herein we demonstrate that similar can be achieved through continuous generation reactive precursors throughout synthesis.
De novo proteins constructed from novel amino acid sequences are distinct that evolved in nature. Construct K (ConK) is a binary-patterned de designed protein rescues Escherichia coli otherwise toxic concentrations of copper. ConK was recently found to bind the cofactor PLP (pyridoxal phosphate, active form vitamin B6). Here, we show catalyzes desulfurization cysteine H2S, which can be used synthesize CdS nanocrystals solution. The approximately 3 nm, as measured by transmission electron...
Biological systems have evolved several unique mechanisms to produce inorganic nanomaterials of commercial interest.Furthermore, bio-based methods for nanomaterial synthesis are inherently "green", enabling low-cost and scalable production under benign conditions in aqueous solutions.However, achieving regulated control the biological processes necessary reproducible, biosynthesis remains a central challenge.This is especially true quantum dots (QDs), which nanocrystals made from...
Photosynthetic organisms use pigment-protein complexes to capture the sunlight that powers most life on earth. Within these complexes, position of embedded pigments is all optimized for light harvesting. At same time, protein scaffold undergoes thermal fluctuations vary structure, and, thus, photophysics, complexes. While variations are averaged out in ensemble measurements, single-molecule spectroscopy provides ability probe conformational changes. We used fluorescence identify...
The enzymatic production of hydrogen sulfide (H2S) from cysteine in various metabolic processes has been exploited as an intrinsically "green" and sustainable mode for the aqueous biomineralization functional metal quantum dots (QDs). Yet, reliance on proteinaceous enzymes tends to limit efficacy synthesis physiological temperature pH, with implications QD functionality, stability, tunability (i.e., particle size composition). Inspired by a secondary non-enzymatic biochemical cycle that is...
Cryptophytes are photosynthetic microalga that flourish in a remarkable diversity of natural environments by using pigment-containing proteins with absorption maxima tuned to each ecological niche. While this the has been well established, subsequent photophysics is highly sensitive local protein environment and so may exhibit similar variation. Thermal fluctuations conformation expected introduce photophysical heterogeneity pigments have evolved important functional properties manner...
Cryptophyte algae are well known for their ability to survive under low light conditions through the use of auxiliary harvesting antennas, phycobiliproteins. Mainly acting absorb where chlorophyll cannot (500-650 nm), phycobiliproteins also play an instrumental role in helping cryptophyte respond changes intensity process photoacclimation. Until recently, photoacclimation was only observed as a change cellular concentration phycobiliproteins; however, additional response recently discovered...
Functional nanomaterials are at the core of many innovations in renewable energy generation and catalysis. However, these materials currently synthesized through high temperature, multi-step processes that utilize organic solvents expensive precursors. These factors increase complexity economic environmental costs manufacturing scale-up. In contrast, biomineralization, process by which biological systems produce structural nanomaterials, occurs under ambient conditions aqueous media...
Cryptophyte algae are well known for their ability to survive under low light conditions through the use of auxiliary harvesting antennas, phycobiliproteins. Mainly acting absorb where chlorophyll cannot (500-650 nm), phycobiliproteins also play an instrumental role in helping cryptophyte respond changes intensity process photoacclimation. Until recently, photoacclimation was only observed as a change cellular concentration phycobiliproteins; however, additional response recently discovered...