CO2 -Responsive polymers.

This Review focuses on the recent progress in the area of CO2 -responsive polymers and provides detailed descriptions of these existing examples. CO2 -responsive polymers can be categorized into three types based on their CO2 -responsive groups: amidine, amine, and carboxyl groups. Compared with traditional temperature, pH, or light stimuli-responsive polymers, CO2 -responsive polymers provide the advantage to use CO2 as a "green" trigger as well as to capture CO2 directly from air. In addition, the current challenges of CO2 -responsive polymers are discussed and the different solution methods are compared. Noteworthy, CO2 -responsive polymers are considered to have a prosperous future in various scientific areas.

[1]  P. Jessop,et al.  Aryl Amidine and Tertiary Amine Switchable Surfactants and Their Application in the Emulsion Polymerization of Methyl Methacrylate , 2012 .

[2]  H. Ohno,et al.  Dual stimuli-responsive phase transition of an ionic liquid/water mixture. , 2011, Chemical communications.

[3]  Yongming Zhang,et al.  A novel smart polymer responsive to CO2. , 2011, Chemical communications.

[4]  K. Landfester,et al.  CO2 responsive reversible aggregation of nanoparticles and formation of nanocapsules with an aqueous core , 2012 .

[5]  Gary T. Rochelle,et al.  Amine Scrubbing for CO2 Capture , 2009, Science.

[6]  R. Krishna,et al.  Polyamine-tethered porous polymer networks for carbon dioxide capture from flue gas. , 2012, Angewandte Chemie.

[7]  A. Samadi,et al.  Polymerized Ionic Liquid Sorbents for CO2 Separation , 2010 .

[8]  M. Lepage,et al.  A CO2-switchable polymer brush for reversible capture and release of proteins. , 2013, Chemical communications.

[9]  B. Smit,et al.  Carbon dioxide capture: prospects for new materials. , 2010, Angewandte Chemie.

[10]  Daisuke Nagai,et al.  Synthesis of hydrogels from polyallylamine with carbon dioxide as gellant: development of reversible CO(2) absorbent. , 2011, Macromolecular rapid communications.

[11]  Jinying Yuan,et al.  Breathing polymersomes: CO2-tuning membrane permeability for size-selective release, separation, and reaction. , 2013, Angewandte Chemie.

[12]  D. Tyler,et al.  Stimuli-Responsive Polymer Nanocomposites Inspired by the Sea Cucumber Dermis , 2008, Science.

[13]  Richard G. Weiss,et al.  Soft matter and art conservation. Rheoreversible gels and beyond , 2005 .

[14]  R. Weiss,et al.  Chemically reversible organogels: aliphatic amines as "latent" gelators with carbon dioxide. , 2001, Journal of the American Chemical Society.

[15]  Nilay Shah,et al.  An overview of CO2 capture technologies , 2010 .

[16]  S. N. Baker,et al.  Optically responsive switchable ionic liquid for internally-referenced fluorescence monitoring and visual determination of carbon dioxide. , 2012, Chemical communications.

[17]  Emiliano Carretti,et al.  Rheoreversible polymeric organogels: the art of science for art conservation. , 2004, Langmuir : the ACS journal of surfaces and colloids.

[18]  Y. Xiong,et al.  Novel imidazolium‐based poly(ionic liquid)s: preparation, characterization, and absorption of CO2 , 2012 .

[19]  Asuka Fujii,et al.  Reversible Trap−Release of CO2 by Polymers Bearing DBU and DBN Moieties , 2008 .

[20]  K. Neoh,et al.  CO2-triggered fluorescence “turn-on” response of perylene diimide-containing poly(N,N-dimethylaminoethyl methacrylate) , 2013 .

[21]  Mark Z. Jacobson,et al.  Review of solutions to global warming, air pollution, and energy security , 2009 .

[22]  Joan F. Brennecke,et al.  Ionic Liquids for CO2 Capture and Emission Reduction , 2010 .

[23]  Guangzhao Zhang,et al.  Re-examination of Dynamics of Polyeletrolytes in Salt-Free Dilute Solutions by Designing and Using a Novel Neutral−Charged−Neutral Reversible Polymer , 2009 .

[24]  S. Minko,et al.  From smart polymer molecules to responsive nanostructured surfaces. , 2005, Langmuir : the ACS journal of surfaces and colloids.

[25]  Heng Xu,et al.  Carbon dioxide and supramolecular chemistry. , 2005, Chemical communications.

[26]  Philip G. Jessop,et al.  A solvent having switchable hydrophilicity , 2010 .

[27]  Richard G. Weiss,et al.  A new class of gels for the conservation of painted surfaces , 2008 .

[28]  G. Goglio,et al.  Thermoresponsive polymer brush-functionalized magnetic manganite nanoparticles for remotely triggered drug release , 2012 .

[29]  Andreas Busch,et al.  Flue gas and pure CO2 sorption properties of coal: A comparative study , 2006 .

[30]  Rajamani Krishna,et al.  Carbon Dioxide Capture from Air Using Amine-Grafted Porous Polymer Networks , 2013 .

[31]  Bo Feng,et al.  Screening of CO2 adsorbing materials for zero emission power generation systems , 2007 .

[32]  Gilles H. Peslherbe,et al.  Design, synthesis, and solution behaviour of small polyamines as switchable water additives , 2012 .

[33]  Henry W. Pennline,et al.  Study of CO2 Absorption and Desorption in a Packed Column , 2001 .

[34]  Shiping Zhu,et al.  Preparation of CO₂/N₂-triggered reversibly coagulatable and redispersible polyacrylate latexes by emulsion polymerization using a polymeric surfactant. , 2012, Macromolecular rapid communications.

[35]  M. Takafuji,et al.  A novel approach to magneto-responsive polymeric gels assisted by iron nanoparticles as nano cross-linkers. , 2008, Chemical communications.

[36]  D. Ma,et al.  In situ recyclable gold nanoparticles using CO2-switchable polymers for catalytic reduction of 4-nitrophenol. , 2012, Chemical communications.

[37]  Shiping Zhu,et al.  Reversibly Coagulatable and Redispersible Polystyrene Latex Prepared by Emulsion Polymerization of Styrene Containing Switchable Amidine , 2011 .

[38]  Adah Almutairi,et al.  UV and near-IR triggered release from polymeric nanoparticles. , 2010, Journal of the American Chemical Society.

[39]  David J. Heldebrant,et al.  Organic liquid CO2 capture agents with high gravimetric CO2 capacity , 2008 .

[40]  Jianbin Tang,et al.  Poly(ionic liquid)s as new materials for CO2 absorption , 2005 .

[41]  Haoran Li,et al.  Carbon dioxide capture by superbase-derived protic ionic liquids. , 2010, Angewandte Chemie.

[42]  Jingping Qu,et al.  N-Heterocyclic Carbene Functionalized Polymer for Reversible Fixation−Release of CO2 , 2009 .

[43]  Philip G. Jessop,et al.  Tertiary amine solvents having switchable hydrophilicity , 2011 .

[44]  R. Maggi,et al.  Cycloaddition of CO2 to epoxides over both homogeneous and silica-supported guanidine catalysts , 2003 .

[45]  J. Atwood,et al.  Carbon Dioxide Capture in a Self-Assembled Organic Nanochannels , 2007 .

[46]  Stuart R Batten,et al.  Interpenetrating Nets: Ordered, Periodic Entanglement. , 1998, Angewandte Chemie.

[47]  Jinying Yuan,et al.  Light-controlled smart nanotubes based on the orthogonal assembly of two homopolymers. , 2011, Chemical communications.

[48]  G. Sartori,et al.  Sterically hindered amines for carbon dioxide removal from gases , 1983 .

[49]  R. Weiss,et al.  Carbon Dioxide and Molecular Nitrogen as Switches between Ionic and Uncharged Room-Temperature Liquids Comprised of Amidines and Chiral Amino Alcohols , 2008 .

[50]  Christopher W. Jones,et al.  Designing adsorbents for CO2 capture from flue gas-hyperbranched aminosilicas capable of capturing CO2 reversibly. , 2008, Journal of the American Chemical Society.

[51]  D. Heldebrant,et al.  Synthesis of ammonia borane for hydrogen storage applications , 2008 .

[52]  R. Weiss,et al.  Reversibly Cross-Linking Amino-Polysiloxanes by Simple Triatomic Molecules. Facile Methods for Tuning Thermal, Rheological, and Adhesive Properties† , 2009 .

[53]  Yongming Zhang,et al.  CO2-switchable viscoelastic fluids based on a pseudogemini surfactant. , 2013, Langmuir : the ACS journal of surfaces and colloids.

[54]  Evgeny Katz,et al.  Chemical gating with nanostructured responsive polymer brushes: mixed brush versus homopolymer brush. , 2008, ACS nano.

[55]  Shiping Zhu,et al.  Preparation of N2/CO2 triggered reversibly coagulatable and redispersible latexes by emulsion polymerization of styrene with a reactive switchable surfactant. , 2012, Langmuir : the ACS journal of surfaces and colloids.

[56]  M. C. Stuart,et al.  Emerging applications of stimuli-responsive polymer materials. , 2010, Nature materials.

[57]  P. Harlick,et al.  Applications of Pore-Expanded Mesoporous Silicas. 3. Triamine Silane Grafting for Enhanced CO2 Adsorption , 2006 .

[58]  Qichao Zhao,et al.  Polymeric ionic liquids as CO(2) selective sorbent coatings for solid-phase microextraction. , 2010, Analytical Chemistry.

[59]  P. Jessop,et al.  Surfactant-Free Polymerization Forming Switchable Latexes That Can Be Aggregated and Redispersed by CO2 Removal and Then Readdition , 2012 .

[60]  R. Weiss,et al.  Reversible, Room-Temperature, Chiral Ionic Liquids. Amidinium Carbamates Derived from Amidines and Amino-Acid Esters with Carbon Dioxide† , 2007 .

[61]  M. Qu,et al.  CO2‐Responsive “Smart” Single‐Walled Carbon Nanotubes , 2013, Advanced materials.

[62]  Shiping Zhu,et al.  Switchable Block Copolymer Surfactants for Preparation of Reversibly Coagulatable and Redispersible Poly(methyl methacrylate) Latexes , 2013 .

[63]  Jinying Yuan,et al.  CO2-responsive polymeric vesicles that breathe. , 2011, Angewandte Chemie.

[64]  Michele Aresta,et al.  Reaction of silylalkylmono- and silylalkyldi-amines with carbon dioxide: evidence of formation of inter- and intra-molecular ammonium carbamates and their conversion into organic carbamates of industrial interest under carbon dioxide catalysis , 2002 .

[65]  P. Jessop,et al.  2-(Diethyl)aminoethyl Methacrylate as a CO2-Switchable Comonomer for the Preparation of Readily Coagulated and Redispersed Polymer Latexes. , 2012, ACS macro letters.

[66]  P. Jessop,et al.  Switchable viscosity triggered by CO2 using smart worm-like micelles. , 2013, Chemical communications.

[67]  Zhen Tong,et al.  Redox-responsive gel-sol/sol-gel transition in poly(acrylic acid) aqueous solution containing Fe(III) ions switched by light. , 2008, Journal of the American Chemical Society.

[68]  Yue Zhao,et al.  Two-Way CO2-Switchable Triblock Copolymer Hydrogels , 2012 .

[69]  R. Weiss,et al.  Reversible, Room-Temperature Ionic Liquids. Amidinium Carbamates Derived from Amidines and Aliphatic Primary Amines with Carbon Dioxide , 2007 .

[70]  P. Jessop,et al.  Switching the hydrophilicity of a solute , 2009 .

[71]  Charles A. Eckert,et al.  Green chemistry: Reversible nonpolar-to-polar solvent , 2005, Nature.

[72]  Ashutosh Chilkoti,et al.  Creating “Smart” Surfaces Using Stimuli Responsive Polymers , 2002 .

[73]  Eugeny Y. Kenig,et al.  CO2‐Alkanolamine Reaction Kinetics: A Review of Recent Studies , 2007 .

[74]  Zhiyuan Zhong,et al.  Stimuli-responsive polymersomes for programmed drug delivery. , 2009, Biomacromolecules.

[75]  P. Jessop,et al.  Redispersible Polymer Colloids Using Carbon Dioxide as an External Trigger , 2011 .

[76]  Lei Jiang,et al.  Amidine-based fluorescent chemosensor with high applicability for detection of CO2: a facile way to "see" CO2. , 2013, The Analyst.

[77]  Xia Tong,et al.  General Strategy for Making CO2-Switchable Polymers. , 2012, ACS macro letters.

[78]  Yue Zhao,et al.  Manipulation of block copolymer vesicles using CO2: dissociation or “breathing” , 2013 .

[79]  A. Khademhosseini,et al.  Hydrogels in Biology and Medicine: From Molecular Principles to Bionanotechnology , 2006 .

[80]  P. Jessop,et al.  Emulsion Polymerization of Styrene and Methyl Methacrylate Using Cationic Switchable Surfactants , 2011 .

[81]  Piero Baglioni,et al.  Synthesis and characterization of gels from polyallylamine and carbon dioxide as gellant. , 2003, Journal of the American Chemical Society.

[82]  W. Nordhaus.  The "Stern Review" on the Economics of Climate Change , 2006 .

[83]  M. Urban,et al.  Recent advances and challenges in designing stimuli-responsive polymers , 2010 .

[84]  K. Matyjaszewski,et al.  Polymer science : a comprehensive reference , 2012 .

[85]  Daisuke Nagai,et al.  Reversible chain association/dissociation via a CO2 responsive crosslinking/decrosslinking system. , 2011, Chemical communications.

[86]  Yue Zhao,et al.  Light-Responsive Block Copolymer Micelles , 2012 .

[87]  Heng Xu,et al.  CO2 in supramolecular chemistry: preparation of switchable supramolecular polymers. , 2004, Chemistry.

[88]  Jianzhong Du,et al.  pH-Sensitive Block Copolymer Vesicles with Variable Trigger Points for Drug Delivery , 2012 .

[89]  K. Shakesheff,et al.  Supercritical CO2: A Clean and Low Temperature Approach to Blending PDLLA and PEG , 2012 .

[90]  K. Landfester,et al.  Molecularly Controlled Coagulation of Carboxyl-Functionalized Nanoparticles Prepared by Surfactant-Free Miniemulsion Polymerization. , 2012, ACS macro letters.

[91]  S. Armes,et al.  Synthesis of pH-responsive tertiary amine methacrylate polymer brushes and their response to acidic vapour , 2011 .

[92]  T. P. Davis,et al.  Reversible addition–fragmentation chain transfer synthesis of amidine‐based, CO2‐responsive homo and AB diblock (Co)polymers comprised of histamine and their gas‐triggered self‐assembly in water , 2013 .

[93]  Daisuke Nagai,et al.  A Novel Construction of a Reversible Fixation−Release System of Carbon Dioxide by Amidines and Their Polymers , 2004 .

[94]  T. Suda,et al.  KINETICS OF REACTION BETWEEN CARBON DIOXIDE AND STERICALLY HINDERED AMINES FOR CARBON DIOXIDE RECOVERY FROM POWER PLANT FLUE GASES , 1998 .

[95]  Christopher W. Jones,et al.  Adsorbent materials for carbon dioxide capture from large anthropogenic point sources. , 2009, ChemSusChem.