Journal ArticleDOI
Organocatalysis: Opportunities and Challenges for Polymer Synthesis
Reads0
Chats0
TLDR
In this article, the ring-opening polymerization of cyclic monomers is used as a representative polymerization process to illustrate some of the features of organic catalysts and initiators and compare them to metal-based approaches.Abstract:
Organocatalysis offers a number of opportunities in polymer synthesis and was among the earliest methods of catalyzing the synthesis of polyesters. In the following Perspective we attempt to highlight the opportunities and challenges in the use of organic molecules as catalysts or initiators for polymerization reactions. The ring-opening polymerization of cyclic monomers is used as a representative polymerization process to illustrate some of the features of organic catalysts and initiators and to compare them to metal-based approaches. The convergence of convenience, functional group tolerance, fast rates, and selectivities will continue to drive innovations in polymerization catalysis, and it is our perspective that organocatalysis will continue to play an important role in these developments.read more
Citations
More filters
Journal ArticleDOI
Polymeric ionic liquids: Broadening the properties and applications of polyelectrolytes
TL;DR: The polymeric ionic liquids (PILs) as mentioned in this paper are a family of functional polymers with particular properties and new applications, such as energy, environment, optoelectronics, analytical chemistry, biotechnology or catalysis.
Journal ArticleDOI
Multiblock Polymers: Panacea or Pandora’s Box?
Frank S. Bates,Marc A. Hillmyer,Timothy P. Lodge,Christopher M. Bates,Kris T. Delaney,Glenn H. Fredrickson +5 more
TL;DR: Recent developments in the field of block polymers are reviewed, offering alluring opportunities to generate exquisitely tailored materials with unparalleled control over nanoscale-domain geometry, packing symmetry, and chemical composition.
Journal ArticleDOI
50th Anniversary Perspective: There Is a Great Future in Sustainable Polymers
TL;DR: In this article, the authors highlight five research topics, including the synthesis of renewable monomers and degradable polymers, the development of chemical recycling strategies, new classes of reprocessable thermosets, and the design of advanced catalysts.
Journal ArticleDOI
Catalysis as an Enabling Science for Sustainable Polymers
TL;DR: This review provides a system-level analysis of sustainable polymers and outlines key criteria with respect to the feedstocks the polymers are derived from, the manner in which thepolymers are generated, and the end-of-use options.
Journal ArticleDOI
The effects of polymeric nanostructure shape on drug delivery.
Shrinivas Venkataraman,James L. Hedrick,Zhan Yuin Ong,Chuan Yang,Pui Lai Rachel Ee,Paula T. Hammond,Yi Yan Yang +6 more
TL;DR: Different approaches to fabricate polymeric nanostructures of various shapes are reviewed, a comprehensive summary on the current understandings of the influence of nanostructure with different shapes on important biological processes in drug delivery is provided, and future perspectives for the development of nanstructures with well-defined shapes for drug delivery are discussed.
References
More filters
Journal ArticleDOI
Click Chemistry: Diverse Chemical Function from a Few Good Reactions.
TL;DR: In this paper, a set of powerful, highly reliable, and selective reactions for the rapid synthesis of useful new compounds and combinatorial libraries through heteroatom links (C-X-C), an approach called click chemistry is defined, enabled, and constrained by a handful of nearly perfect "springloaded" reactions.
Journal ArticleDOI
N-heterocyclic carbenes: a new concept in organometallic catalysis.
TL;DR: N-Heterocyclic carbenes have become universal ligands in organometallic and inorganic coordination chemistry as mentioned in this paper, and they not only bind to any transition metal, be it in low or high oxidation states, but also to main group elements such as beryllium, sulfur, and iodine.
Journal ArticleDOI
Synthesis and activity of a new generation of ruthenium-based olefin metathesis catalysts coordinated with 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene ligands.
TL;DR: These air- and water-tolerant complexes were shown to exhibit an increased ring-closing metathesis activity at elevated temperature when compared to that of the parent complex 2 and the previously developed complex 3.
Journal ArticleDOI
Polylactic Acid Technology
TL;DR: Polylactic acid is proving to be a viable alternative to petrochemical-based plastics for many applications It is produced from renewable resources and is biodegradable, decomposing to give H2O, CO2, and humus, the black material in soil as mentioned in this paper.
Journal ArticleDOI
Stereospecific Olefin Polymerization with Chiral Metallocene Catalysts
TL;DR: In contrast to heterogeneous Ziegler-Natta catalysts, homogeneous metallocene-based catalysts as discussed by the authors allow efficient control of regio-and stereoregularities, molecular weights and molecular weight distributions, and comonomer incorporation.