Photomodulation of the inverse temperature transition of a modified elastin poly(pentapeptide)

Strzegowski, Luke A.; Martı́nez, Manuel Bueno; Gowda, D. Channe; Urry, Dan W.; Tirrell, David A.

doi:10.1021/ja00081a070

Cited by 64 publications

(63 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Poly(VPGVG) was synthesized in our laboratory following the methods described in ref. [21] Stoichiometry and purity are routinely checked by 13 C and 1 H NMR, elemental and amino acid analysis, and chromatographic methods. Some of the physical properties of the final polymer were also checked.…”

Section: Experimental Partmentioning

confidence: 99%

Effect of α-, β- and γ-Cyclodextrins on the Inverse Temperature Transition of the Bioelastic Thermo-Responsive Polymer Poly(VPGVG)

Alonso

Arranz

Reboto

et al. 2001

Macromol. Chem. Phys.

View full text Add to dashboard Cite

Section: Experimental Partmentioning

confidence: 99%

Effect of α-, β- and γ-Cyclodextrins on the Inverse Temperature Transition of the Bioelastic Thermo-Responsive Polymer Poly(VPGVG)

Alonso

Arranz

Reboto

et al. 2001

Macromol. Chem. Phys.

View full text Add to dashboard Cite

“…Those are changes in chemical potential (pH, etc.) 3,12) , redox 3,13) and lighting state 3,14,15) , pressure 3,16) , and others 3) . This behaviour along with its remarkable biocompatibility has opened an interesting field of future applications of this polymer both biomedical 2,3,6,11,[17][18][19][20][21] and industrial 3) .…”

mentioning

confidence: 99%

Structural investigation of the poly(pentapeptide) of elastin, poly(GVGVP), in the solid state

Rodríguez‐Cabello¹,

Alonso

Díez

et al. 1999

Macromol. Chem. Phys.

View full text Add to dashboard Cite

SUMMARY: Poly(GVGVP) is the head of a novel group of biopolymers showing exceptional potential for future applications in different fields such as biomedical, environmental, energy or industrial. Taking into account their future development, further knowledge is needed to understand the molecular basis of their remarkable behaviour and other structural and technical parameters. This paper is devoted to a particular task of this challenge: the structural study of its solid state, which is approached for the first time in this work. Thermal, wide-angle X-ray diffraction and vibrational Raman analysis were used. On the whole, all the observations are consistent with the existence of a metastable amorphous phase composed by polymer chains without apparent conformational order. The main structural property is the existence of an extensive and dense net of hydrogen bonds, which seemed to comprise the majority of the amide groups present. Thermal treatment induces structural changes on this polymer. Part of the hydrogen bonds broke and the polymer chains reorganise to achieve a stable state. This state is non-crystalline in the classical sense and irreversible. Thus, due to the thermal input, the polymer chains had gained enough mobility to optimise their inter and intramolecular interactions and to fulfil their entropic requirements.

show abstract

“…These polymers responsive to light include the well-known azobenzene groups incorporated in methylcellulose and methylcellulose-cyclodextrin inclusion complexes, as well as the spiropyran-containing photo-responsive polymers, such as PAA, PHPMA and PNIPAM. The photochromic derivatives of elastin-like polypeptides are also employed [9][10][11][12][13][14][15][16][17][18].…”

Section: Light Responsive Polymersmentioning

confidence: 99%

“…[ [9][10][11][12][13][14][15][16][17][18] Azobenzene groups incorporated in methylcellulose and methylcellulose-cyclodextrin inclusion complexes…”

Section: Photo-responsivementioning

confidence: 99%

Responsive Polymers for Crop Protection

et al. 2010

View full text Add to dashboard Cite

This review outlines the responsive polymer methods currently in use with their potential application to plant protection and puts forward plant-specific mechanisms as stimuli in newly devised methods for smart release of crop protection agents (CPAs). CPAs include chemicals (fungicides, insecticides, herbicides), biochemicals (antibiotics, RNAbased vaccines for plant viruses), semiochemicals (pheromones, repellents, allomones), microbial pesticides, growth regulators (insect and plant) or micronutrients, all with crop protection effects. This appraisal focuses on emerging uses of polymer nano-encapsulated CPAs. Firstly, the most interesting advances in controlled release methods are critically discussed with their advantages and drawbacks. Secondly, several plant-specific stimulibased smart methods are anticipated for use alongside the polymer nano-or microcapsules. These new CPA release methods are designed to (i) protect plants against infection produced by fungi or bacteria, and (ii) apply micro-nutrients when the plants need it the most. Thus, we foresee (i) the responsive release of nano-encapsulated bioinsecticides regulated by plant stress enzymes, and (ii) the delivery of micro-nutrients synchronized by the nature or intensity of plant root exudates. Such continued advances of nano-scale smart polymer-based CPAs for the protection of crops herald a "small revolution" for the benefit of sustainable agriculture.Keywords: responsive polymers; crop protection agent (CPA); CPA nanocapsule; nanoscience; nanotechnology; plant-specific stimuli; intelligent self-regulated release OPEN ACCESSPolymers 2010, 2 230 Glossary of TermsAllomone: a pheromone that induces a behavioral or physiological change in a member of another species that is of benefit to the producer. Bio-insecticide: the natural substance made and used for eliminating plant-eating insects. Cuticle: the layer of cutin (waxy waterproof substance, consisting of derivatives of fatty acids) covering the epidermis of the aerial parts of plants. Elicitor: a substance that induces the defense mechanisms in higher plants. Epidermis: the outer protective layer of plant cells. Parasitic plant: a plant that derives some or all of its sustenance from another plant. Perennial plant: a plant that lives for more than two years. Phloem: a plant tissue that conducts organic nutrients substances to all parts of the plant. Phytopathogen: an organism that causes a disease in a plant. RNA-based vaccines for plant viruses: Double-stranded RNA (dsRNA) is a RNA with two complementary strands, which is converted to small interfering (siRNA), involved in the RNA interference (RNAi) pathway, including plant viruses RNA silencing. Root exudate: any substance released through the pores of a diseased or injured plant root.

show abstract

Photomodulation of the inverse temperature transition of a modified elastin poly(pentapeptide)

Cited by 64 publications

References 0 publications

Effect of α-, β- and γ-Cyclodextrins on the Inverse Temperature Transition of the Bioelastic Thermo-Responsive Polymer Poly(VPGVG)

Effect of α-, β- and γ-Cyclodextrins on the Inverse Temperature Transition of the Bioelastic Thermo-Responsive Polymer Poly(VPGVG)

Structural investigation of the poly(pentapeptide) of elastin, poly(GVGVP), in the solid state

Responsive Polymers for Crop Protection

Contact Info

Product

Resources

About