Douglas Stephan

Principaux champs de recherche
Chercheur(e)s associé(e)s
Organisations associées

Projets de recherche récents

Catalysis and Materials

2014/15-2019/20 • $1,050,000 • PI
Aucun sommaire

Frustrated Lewis Pairs: Metal-Free Synthesis and Catalysis

2019/20 • $155,000 • PI
Frustrated Lewis Pairs Chemistry *In a seminal Science article, we reported the heterolytic cleavage of H2 without using a transition metal. That finding opened the door to metal-free hydrogenation catalysis and spawning world-wide activity in the general area of "frustrated Lewis pairs" (FLPs)...

"Frustrated Lewis Pairs": Metal-Free Synthesis and Catalysis

2014/15-2018/19 • $775,000 • PI
Frustrated Lewis Pairs Chemistry In a seminal Science article, we reported the heterolytic cleavage of H2 without using a transition metal. That finding opened the door to metal-free hydrogenation catalysis and spawning world-wide activity in the general area of “frustrated Lewis pairs” (FLPs)...

Synthesis of New Precursors for Cobalt and Group 13/15 Thin Films

2017/18-2018/19 • $237,500 • PI,CO
High quality metallic cobalt thin films have found applications in microelectronic and magnetoresistive devices, while high quality thin films of Group 13-15 materials are important for optoelectronics. The fabrication of such thin films replies on suitable chemical precursors. The proposed...

Tellurium-based reagents and materials

2015/16-2017/18 • $450,000 • PI,CO
Frustrated Lewis pair (FLP) chemistry is a new paradigm for synthetic and catalytic chemistry. Te- containing heterocycles have lead to the development of new classes of highly desirable photo-active and electro-active materials. These areas have been pioneered by both Stephan and Seferos. In...

Hydrogenation catalysts for latex: direct production of HNBR

2014/15-2017/18 • $125,103 • PI
In collaboration with LANXESS, we have had considerable success designing new catalysts for the modification of synthetic rubbers over the past 6 years. In the regard, we have developed, evaluated, patented and published a series of catalyst for hydrogenation, metathesis and polymerization....

FLP Routes to Dye Precursors

2016/17 • $23,000 • PI
Inkbox is a company in Toronto that is commercializing the world's first two-week tattoo. This technology hasboth ornamental and important medical applications. The key to this technology in an active ingredient derivedfrom a fruit extract called Genipin, It is currently extracted and imported...

Asymmetric Borenium Cations in Catalysis

2013/14-2015/16 • $449,400 • PI,CO
Many key products for the pharmaceutical, commodity chemical and agrochemical sectors are chiral compounds produced by reduction chemistry. The production of such materials can be achieved using conventional stoichiometric reductions of suitable precursors, followed by separation of optical...

Novel main group and transition metal precursors for atomic layer and chemical vapor deposition

2013/14-2015/16 • $449,060 • PI,CO
As the conventional silica-based dielectric material cannot satisfy the requirement of modern microelectronics, several transition metal oxides with superior properties have been identified as the next generation dielectric materials for microelectronics. One aspect of this research proposal is...

Market assessment: olefin metathesis catalysis

2015/16 • $14,139 • PI
We have developed a family of proprietary catalysts that can be used for a process known as olefin metathesis. US, EU, and PCT provisional composition of matter patents on this family of catalysts have been filed. This process (olefin metathesis) is one of the most useful chemical...

NSERC biomaterials and chemicals strategic research network

2012/13-2014/15 • $2,164,167 • PI,CO
The Forest Industry is one of Canada's largest industries and the economic mainstay of many communities across the country. It is facing great challenges due to competition from low cost sources of wood and declining demand for some of its products. The Industry is at a crossroads and must...

Canada Research Chair in Inorganic Materials and Catalysis

2010/11-2014/15 • $950,000 • PI
Aucun sommaire

Commercialization of olefin metathesis catalysts

2014/15 • $125,000 • PI
We have developed a propriety new technology for olefin metathesis, a chemical process of considerable industrial importance for the pharmaceutical and specialty chemical industries. We have shown in preliminary work that this is viable in industrially desirable transformations. At present a...

Frustrated lewis pairs: a new paradigm in reactivity and catalysis

2010/11-2013/14 • $620,000 • PI
The production of the bulk of chemicals, pharmaceuticals and materials used today involve some form of catalysis. Most often, such processes require the use of precious metals which adds significant cost to the resulting product. In addition, these metals generate issues relating to toxicity...

New catalyst technologies for rubber and elastomeric polymers

2011/12-2013/14 • $294,000 • PI
This research proposal is concerned with the development of fundamentally new approaches to low-costchemical technologies used in the production and modification of synthetic rubber products and nitrile-butadiene rubbers in particular. These strategies are based on 4 fundamentally new catalysts...

Low Temperature EPR Spectrometer

2013/14 • $120,125 • PI,CO
EPR is a technique for the characterization of paramagnetic superparamagnetic and ferromagnetic molecules, polymers and materials widely used in inorganic, organic, biological and materials chemistry. Despite this, the Chemistry Department at U of T does not have an EPR spectrometer. Currently,...

Demonstration of metathesis on Altranex fuels

2013/14 • $25,000 • PI
Altranex Corp. is a Kingston, ON-based biofuel technology development company. There are several commercially available and developmental catalysts for metathesis that they are interested in evaluating for use in their process. The Engage research aims to assist the company in identifying the...

NSERC biomaterials and chemicals strategic research network

2010/11-2012/13 • $2,605,833 • PI,CO
The Forest Industry is one of Canada's largest industries and the economic mainstay of many communities across the country. It is facing great challenges due to competition from low cost sources of wood and declining demand for some of its products. The Industry is at a crossroads and must...

Metal-free methods for the reduction of organic compounds

2010/11-2012/13 • $472,200 • PI,CO
All of the key chemical manufacturers, including the pharmaceutical, commodity chemical and agrochemical sectors, use reduction chemistry as part of their synthetic repertoire. This reaction is typically accomplished in one of two ways, either employing expensive transition metal catalysts (for...

Chemistry of greenhouse gases: capture and use of CO2 and N2O by frustrated lewis pairs

2010/11-2012/13 • $435,000 • PI
The NSERC guidelines for the "Strategic Project Program" specifically identifies "advance technologies to capture CO2" and "advance technologies to enhance the performance and efficiency of energy conversion systems" as strategic projects in the national interest. This work will develop and...

New process and product technologies for organophosphorus compounds

2010/11-2011/12 • $100,000 • PI,CO
This research proposal is concerned with the development of novel approaches to existing and new organophosphorus products, which are widely used in chemical and pharmaceutical industries. One aspect of the proposed research targets novel processes with high material conversion efficiency which...

Metal free hydrogenation to amines: Phase 1

2011/12 • $60,000 • PI
Hydrogenation, or the addition of hydrogen to molecules is one of the most important transformations in all of chemistry. Typically this process requires the use of a transition metal to mediate this process. We have discovered a new metal-free process that effects the hydrogenation of a variety...

Frustrated Lewis pairs in hydrogen storage materials: A new paradigm

2010/11 • $150,000 • PI,CO
The prospect of a future based on a hydrogen economy requires new technologies for the efficient generation, storage and utilization of hydrogen. Current approaches suffer from either the lack of technology for the regeneration of the hydrogenated material or only efficiently store hydrogen at...

Brevets

Applications connexes: EP20120748680, EP20120748680