Results 31 to 40 of about 6,070 (236)

Localization of Spiropyran Activation

Langmuir, 2019
Functionalization of planar and curved glass surfaces with spiropyran (SP) molecules and localized UV-induced activation of the mechanophore are demonstrated. Fluorescence spectra of UV-irradiated SP-functionalized surfaces reveal that increases in surface roughness or curvature produce more efficient conversion of the mechanophore to the open ...
Martha E. Grady, Cassandra M. Birrenkott, Preston A. May, Scott R. White, Jeffrey S. Moore, Nancy R. Sottos   +5 more
openaire   +2 more sources

Two-photon photopolymerization directly initiated by spiropyran photochromic molecules

Light: Advanced Manufacturing, 2023
Here, we report the ability of spiropyrans to initiate two-photon polymerization (TPP) for the first time in the literature. The comparison and synergies between the spiropyran photochromic molecule of interest, namely 6-nitro-BIPS, and well-known ...
Dandan Ge, Jean Aubard, Erell Bodinier, Safi Jradi, Stéphanie Lau-Truong, Nordin Felidj, Renaud Bachelot, Anne-Laure Baudrion   +7 more
doaj   +1 more source

Double-stranded RNA induction asa potential dynamic biomarkerfor DNA-demethylating agents

Molecular Therapy: Nucleic Acids, 2022
Hypomethylating agents (HMAs), such as azacitidine and decitabine, induce cancer cell death by demethylating DNAs to promote the expression of tumor-suppressor genes. HMAs also reactivate the transcription of endogenous double-stranded RNAs (dsRNAs) that
Minjeong Kang, Raisa Kharbash, Ja Min Byun, Jaemin Jeon, Ahsan Ausaf Ali, Doyeong Ku, Jimin Yoon, Yongsuk Ku, Jooyeon Sohn, Seung-Jae V. Lee, Dong-Yeop Shin, Youngil Koh, Sung-Soo Yoon, Junshik Hong, Yoosik Kim   +14 more
doaj   +1 more source

A divergent asymmetric approach to aza-spiropyran derivative and (1S,8aR)-1-hydroxyindolizidine

Beilstein Journal of Organic Chemistry, 2007
BackgroundSpiroketals and the corresponding aza-spiroketals are the structural features found in a number of bioactive natural products, and in compounds possessing photochromic properties for use in the area of photochemical erasable memory, self ...
Jian-Feng Zheng, Wen Chen, Su-Yu Huang, Jian-Liang Ye, Pei-Qiang Huang   +4 more
doaj   +1 more source

Photochromic spiropyran monolithic polymers: Molecular photo-controllable electroosmotic pumps for micro-fluidic devices [PDF]

, 2010
A novel photo-controllable micro-fluidic electroosmotic pump based on spiropyran monolithic polymers is presented here for the first time. Photochromic monolithic scaffolds have been synthesised within poly(tetrafluoroethylene) coated fused silica ...
Abele, Silvija, Benito-Lopez, Fernando, Byrne, Robert, Diamond, Dermot, Macka, Mirek, Nie, Fu-Qiang, Paull, Brett, Scarmagnani, Silvia, Slater, Conor, Walsh, Zarah   +9 more
core   +1 more source

Photoswitchable Spiropyran Dyads for Biological Imaging [PDF]

Organic Letters, 2016
The synthesis of a small-molecule dyad consisting of a far-red-emitting silicon rhodamine dye that is covalently linked to a photochromic spironaphthothiopyran unit, which serves as a photoswitchable quencher, is reported. This system can be switched reversibly between the fluorescent and nonfluorescent states using visible light at wavelengths of 405 ...
Xiong Y, Rivera-Fuentes P, Sezgin E, Vargas Jentzsch A, Eggeling C, Anderson HL   +5 more
openaire   +3 more sources

Solid state photochromism of spiropyrans

International Journal of Photoenergy, 2005
A series of spiropyrans possessing photochromic properties in solid state were investigated. UV irradiation (λmax=365 nm) of the thin vacuum deposited spiropyran films results in conversion of the colorless form to the photocolored one.
B. S. Lukyanov, A. V. Metelitsa, N. A. Voloshin, Yu. S. Alexeenko, M. B. Lukyanova, G. T. Vasilyuk, S. A. Maskevich, E. L. Mukhanov   +7 more
doaj   +1 more source

Investigating nano-structuring within imidazolium ionic liquids: A thermodynamic study using photochromic molecular probes [PDF]

, 2009
Following previous studies involving the thermal relaxation of spirocyclic compounds we extended our studies to investigate the formation of nano-structured domains in ionic liquids (ILs).
Byrne, Robert, Coleman, Simon, Diamond, Dermot, Minkovska, Stela   +3 more
core   +1 more source

Spiropyran as a potential molecular diagnostic tool for double-stranded RNA detection

BMC Biomedical Engineering, 2019
Background Long double-stranded RNAs (dsRNAs) are duplex RNAs that can induce immune response when present in mammalian cells. These RNAs are historically associated with viral replication, but recent evidence suggests that human cells naturally encode ...
Ahsan Ausaf Ali, Minjeong Kang, Raisa Kharbash, Yoosik Kim   +3 more
doaj   +1 more source

Synthesis of novel silica encapsulated spiropyran-based thermochromic materials

Royal Society Open Science, 2022
A series of novel spiropyrans were synthesized through the condensation of substituted 3,3-dimethyl-2-methyleneindoline with different nitro-substituted o-hydroxy aromatic aldehydes. Indoles were initially substituted with a variety of alkanes and esters
Anila Iqbal, Ghazala Iqbal, Muhammad Naveed Umar, Haroon ur Rashid, Sher Wali Khan   +4 more
doaj   +1 more source