Spiropyran-Based Photochromic Polymer Nanoparticles with Optically Switchable Luminescence

Zhu, Ming‐Qiang; Zhu, Linyong; Han, Jason J.; Wu, Wuwei; Hurst, James K.; Li, Alexander D. Q.

doi:10.1021/ja0567642

Cited by 500 publications

(388 citation statements)

References 36 publications

Supporting

Mentioning

383

Contrasting

Order By: Relevance

“…[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.…”

mentioning

confidence: 99%

Synthesis and Characterizations of Bis-Spiropyran Derivatives

Lee¹,

Ji²,

Kang³

2012

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

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.

show abstract

mentioning

confidence: 99%

Synthesis and Characterizations of Bis-Spiropyran Derivatives

Lee¹,

Ji²,

Kang³

2012

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

show abstract

“…Using nanoparticles of diameter 40-400 nm have been prepared by emulsion polymerization [48]. These nanoparticles undergo reversible fluorescence photoswitching of the merocyanine form (φ =0,24) according to photochromic transformations of spiropyran.…”

Section: Scheme 17mentioning

confidence: 99%

Nanophotochromism

Barachevsky¹

2015

Organic Photonics and Photovoltaics

View full text Add to dashboard Cite

Abstract:The review presents the state-of-the-art analysis of investigations in the field of a new line of research of photochromism -nanophotochromism. The design, properties, and possible applications of photochromic nanoparticles prepared by different methods with the use of photochromic substances (aggregates, host-guest, and polymer systems, solid nanoparticles) as well as core-shell photochromic nanostructures based on polymers, silica, quantum dots, doped upconversion nanocrystals, and Ag, Au, etc. nanoparticles have been reviewed. Keywords: photochromism; photochromic nanoparticles; core-shell photochromic nanoparticles design; photoswitching; aggregates; polymer systems, host-guest systems IntroductionPhotochromism is a very important phenomenon for different applications in photonics. The applications are based on reversible phototransformations of photochromic compounds between two states and changes of their properties that accompany these transformations At present, systems and materials containing photochromic nanopatricles have become highly significant. Among these are nanodimensional particles of photochromic substances, including aggregates, and coreshell systems. As a core, inorganic nanoparticles of gold, silver, metal oxides, quantum dots (QD), and also polymeric nanoparticles are used. The shell consists of photochromic molecules or their aggregates connected to a core surface either chemically or physically. Photochromic nanoparticles with photocontrolled fluorescence arouse a special interest because the fluorescence technique is becoming a leading strategy in biological diagnosis, imaging, and detection applications. This paper is a state-of-the-art review which presents results of studying photochromic nanoparticles including author's own data. The results of earlier research are also surveyed in some other reviews [1][2][3][4][5][6][7][8][9][10][11][12][13]. Photochromic nanoparticles:properties and applications Nanoparticles based on photochromic substances AggregatesThe most known photochromic nanoparticles are aggregates of photochromic organic compounds [14]. These compounds experience reversible photoinduced transformations between two states, Sch. 1A and Sch. 1B. Scheme 1The photoinduced colored merocyanine form B absorbing visible irradiation is formed from a colorless form A as a result of photodissociation of the -C-O-bond of the pyran heterocycle under UV radiation, and this is followed by spontaneous isomerization of the cis-form to the trans one. The colored form B can be converted back to the initial colorless form A upon absorption of visible light or spontaneously during the dark relaxation, which is accelerated by heating.The J-aggregates of nitro-substituted indoline spiropyrans Sch. 2 with long alkyl substituents are of special interest [15].The narrow absorption bands of J-aggregates of these photochromic compounds (Fig. 1) made it possible prepare a specimen of the multilayered optical disk providing freUnauthenticated Download

show abstract

“…Other reporting groups include the spiropyrans which, upon exposure to UV light, undergo heterocyclic ring cleavage to the open chain merocyanine form. The latter has strong absorption in the visible region, whereas the spiropyran (closed form) is colourless (Chen et al, 2008;Zhu et al, 2011;Zhu et al, 2006). This has been used in the development of spiropyranbased nanosystems which act as fluorometric and colorimetric temperature sensors .…”

Section: Synthesis Of Polymeric Nanoparticlesmentioning

confidence: 99%

Polymeric nanoparticles for optical sensing

Canfarotta

Whitcombe

Piletsky

2013

Biotechnology Advances

121

View full text Add to dashboard Cite

Nanotechnology is a powerful tool for use in diagnostic applications. For these purposes a variety of functional nanoparticles containing fluorescent labels, gold and quantum dots at their cores have been produced, with the aim of enhanced sensitivity and multiplexing capabilities. This work will review progress in the application of polymeric nanoparticles in optical diagnostics, both for in vitro and in vivo detection, together with a discussion of their biodistribution and biocompatibility.

show abstract

Spiropyran-Based Photochromic Polymer Nanoparticles with Optically Switchable Luminescence

Cited by 500 publications

References 36 publications

Synthesis and Characterizations of Bis-Spiropyran Derivatives

Synthesis and Characterizations of Bis-Spiropyran Derivatives

Nanophotochromism

Polymeric nanoparticles for optical sensing

Contact Info

Product

Resources

About