Reversible colorimetric ion sensors based on surface initiated polymerization of photochromic polymers

Fries, Kristen H.; Samanta, Sudip; Orski, Sara V.; Locklin, Jason

doi:10.1039/b818042c

Cited by 113 publications

(96 citation statements)

References 21 publications

(22 reference statements)

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“…[4][5][6][7][8][9][10][11][12][13][14][15] However, the synthesis and characterization of oligomers or polymers containing spiropyran moieties in the main backbone have not been well investigated. [16][17][18][19][20][21][22][23] Herein, we report the synthesis and characterization of conjugated bis-spiropyran derivatives.…”

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confidence: 99%

Synthesis and Characterizations of Bis-Spiropyran Derivatives

Lee¹,

Ji²,

Kang³

2012

Bulletin of the Korean Chemical Society

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We synthesized three different derivatives of bis-spiropyran using simple organic reactions with high yields. BSP1, a derivative of bis-spiropyran having a connection at the position 6' and BSP2, a derivative of bisspiropyran having a connection at the position 5 and BSP3, a derivative of bis-spiropyran containing a dithienylethene group between two spiropyran moieties were synthesized. The optical properties of BSPs were characterized. UV-Vis spectra showed that BSPs exhibit reversible photo-isomerization and the efficiency of photo-isomerization is highly dependent on the position of nitro group. BSPs having nitro group at para position of hydroxy group showed the higher efficiency of photo-isomerization that the one having nitro group at ortho position. The optical microscope images obtained under ultraviolet or visible light exposure demonstrated that the formation of nanorods can be reversibly controlled by optical signal.

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confidence: 99%

Synthesis and Characterizations of Bis-Spiropyran Derivatives

Lee¹,

Ji²,

Kang³

2012

Bulletin of the Korean Chemical Society

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“…The PMSSQ-PPFPA films were converted to photoswitchable films featuring photochromic moieties such as . The salicylidene aniline group isomerizes from the enol form into the keto form under UV irradiation, and spiropyran isomerizes by ring-opening reaction into a zwitterionic merocyanine structure, resulting in a strong change in the dipole moment, consequently influencing the surface wetting properties [60][61][62][63][64][65]. Amino-functionalized spiropyrans and azobenzenes were also synthesized and used to functionalize PMSSQ-PPFPA films [66].…”

Section: Reactive Polymer Brushesmentioning

confidence: 99%

Post-polymerization Modification of Surface-Bound Polymers

Théato

2015

Controlled Radical Polymerization at and From Solid Surfaces

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Surfaces that have been intricately functionalized with reactive polymers have attracted scientific attention recently because of their potential use in a broad range of applications. Polymers containing chemically reactive functional groups can be utilized for subsequent modification of various surfaces. Reactive polymeric surfaces can be produced by surface-initiated polymerization, such as atom transfer radical polymerization, nitroxide-mediated polymerization, and ring-opening metathesis polymerization. Such surfaces can subsequently undergo postpolymerization modification to alter their physicochemical properties. Postpolymerization modification has a number of advantages, including the fact that diverse polymer structures are rapidly accessible without individual synthesis; polymerization of new functional monomers can produce a variety of surfaces and interfaces; and other materials can be easily modified, which would be difficult using conventional direct polymerization. In addition, the libraries of chemical reactions and materials that can be used in post-polymerization modifications are abundant. Therefore, post-polymerization modification opens up new platforms for the facile and versatile modification of various surfaces. This chapter focuses on a discussion of post-polymerization modification of various surface-bound polymers, from planar surfaces to three-dimensional objects, and on the extended applications of the reactive surfaces.

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“…However, the overwhelming majority of the reports so far are mainly focusing on common triggers, including temperature [11][12][13], pH [11,12], light [14,15], etc. Carbon dioxide (CO 2 ) is the nontoxic nature as a key metabolite in cells and possesses good biocompatibility and membrane permeability, which has been found able to reversibly switch solvent, solutes, and surfactants [16][17][18][19], all of which bear amidine or guanidine functional groups.…”

Section: Introductionmentioning

confidence: 98%

Preparation and characterization of CO2-responsive poly(amino acid) derivatives with guanidine group

et al. 2015

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Polyaspartamides, which are termed to a variety of amide derivatives of poly(aspartic acid), one of the poly(amino acid)s or polypeptides, have been intensively investigated as biodegradable and biocompatible polymers with a broad range of potential biomedical applications as well as eco-friendly industrial uses. By discovering that polymers containing amidine or guanidine functionality have been shown to be reversibly responsive to carbon dioxide (CO 2 ), we have developed two polyaspartamide systems: novel CO 2 -responsive hydrogel and amphiphilic polyaspartamide derivative containing L-arginine. In this work, poly(2-hydroxyethyl aspartamide) derivative was modified with L-arginine unit (PHEA-Larg), before cross-linked by hexamethylene diisocyanate in the presence of dibutyltin dilaurate catalyst to provide a hydrogel having not only good gel strength, but reversible CO 2 absorption characteristics. On the other hand, amphiphilic polyaspartamide derivative containing hydrophobic long alkyl moiety (octyl) and L-arginine unit was synthesized, and the CO 2 -responsive solubility and molecular self-assembly behaviors of the systems were investigated. These new polyaspartamide systems have potential in several applications including CO 2 capture, CO 2 -responsive and switchable surface, sensor, smart hydrogel for controlled drug delivery system, etc.

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Reversible colorimetric ion sensors based on surface initiated polymerization of photochromic polymers

Abstract: Spiropyran containing polymer brushes were used as reversible, photoswitchable optical sensors that show selectivity for different metal ions and drastic changes in surface wettability.

Cited by 113 publications

References 21 publications

Synthesis and Characterizations of Bis-Spiropyran Derivatives

Synthesis and Characterizations of Bis-Spiropyran Derivatives

Post-polymerization Modification of Surface-Bound Polymers

Preparation and characterization of CO2-responsive poly(amino acid) derivatives with guanidine group

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