The present invention provides photochromic compounds and derivatives thereof as shown in claim
1
and methods of use of these compounds and derivatives. The present invention also provides photochromic optical probes capable of undergoing light directed reversible transition between a first state and a second state. The invention also teaches methods of determining and controlling reversible optical biomolecular interactions, for example binding of calcium in a subject.
Substituent Effects and Mechanism in a Mechanochemical Reaction
作者:Meredith H. Barbee、Tatiana Kouznetsova、Scott L. Barrett、Gregory R. Gossweiler、Yangju Lin、Shiva K. Rastogi、William J. Brittain、Stephen L. Craig
DOI:10.1021/jacs.8b09263
日期:2018.10.10
Hammett linearfreeenergyrelationship with a value of ρ = 2.9, consistent with a highly polar transition state with heterolytic, dissociative character. The methodology paves the way for further application of linearfreeenergyrelationships and physical organic methodologies to mechanochemical reactions, and the characterization of new force probes should enable additional, quantitative studies
A resettablelogic system based on spiropyran‐modified goldnanoparticles that is capable of AND, OR, and INHIBIT logic operations has been constructed. Several methods can record the output of this process, including the naked eye, UV/Vis spectroscopy, determination of the ζ potential, and dynamic light scattering. These logicgates can also detect copper(II) ions in aqueous media.
PEGylated cyanine dye nanoparticles as photothermal agents for mosquito and cancer cell control
作者:Qi Xu、Yujun Shen、Yongchao Zhang、Xusheng Shao
DOI:10.1016/j.bmcl.2019.05.057
日期:2019.8
Conversion of light energy to heat via photothermal conversion agents (PTCAs) is of great interest and has potential applications. Here, we described a heptamethine cyanine (Cy7) dye nanoparticles (Cy7-PEG NPs) preparedfrom heptamethine cyanine and poly(ethylene glycol) (PEG400) via a simple solvothermal process as novel PTCA. Cy7-PEG NPs have absorption maximum at about 808 nm and good photothermal conversion
Abstract The photophysical properties of eight structurally diverse near-infrared cyaninedyes were investigated with respect to their structural features and potential use as light-harvesting sensitizers of dye sensitized solar cells. The absorption, emission, and lifetime characteristics of the dyes were assessed under a variety of conditions. The photophysical properties and sensitizing efficiency