Rhodamine Based Fluorescent Chemosensors for Hg<sup>2+</sup>and its Biological Application
作者:Ji-Young Choi、Wan-Tae Kim、Ju-Young Yoon
DOI:10.5012/bkcs.2012.33.7.2359
日期:2012.7.20
Two new chemosensors, rhodamine 6G derivative bearing hydroxyethyl group (1) and rhodamine base derivative bearing 15-crown-5 group (2) were synthesized and their sensing behaviors toward various metal ions were investigated by UV/Vis and fluorescence spectroscopies. Addition of $Hg^2+}$ ion to a $CH_3CN$ solution of 1 and 2 gave visual color changes as well as fluorescent OFF-ON observations. Selectivity and sensitivity of 1 towards $Hg^2+}$ are excellent enough to detect micromolar level of $Hg^2+}$ ion, even in equeous media and biological sample (HeLa cell).
Facile synthesis of fluorescent dye labeled biocompatible polymers via immortal ring-opening polymerization
作者:Wei Zhao、Yang Wang、Xinli Liu、Dongmei Cui
DOI:10.1039/c2cc31061a
日期:——
A highly efficient strategy for synthesizing “clean” fluorescent dye-labeled biocompatible polymers was established by employing a rare-earth metal catalyst via immortal ROP.
Novel hexacentered phosphazene compound as selective Fe<sup>3+</sup> ions sensor with high quantum yield: Synthesis and application
作者:Ozgur Ozay、Hava Ozay
DOI:10.1080/10426507.2018.1539491
日期:2019.3.4
Abstract A novel compound hexa-rhodamine substituted phosphazene (HRP) with six active centers on a cyclotriphosphazene ring was synthesized using the alkyne-azide “click” reaction. The structure of HRP was characterized using spectroscopic techniques. The optical sensor properties of HRP for metal ions were investigated using UV-Vis and Fluorescence spectroscopy. It was determined that HRP is a selective
A small “smart” glycomimeticfluorescentprobe has been synthesized to monitor internalization by the DC‐SIGN receptor in dendriticcells (DCs). Its activation and accumulation in low‐pH cell structures were spectrally detected. Such molecules could compete with pathogens for binding both outside and inside DCs.
A colored resin composition using a conventional rhodamine derivative has not provided heat resistance in a practical range. Therefore, it is an object of the present invention to provide a coloring composition having higher heat resistance as compared with the conventional coloring composition.
The present invention relates to a compound represented by the following general formula (1), and a polymer having a monomer unit derived from the compound, and the like.
(wherein R
1
to R
4
each independently represent a hydrogen atom, an alkyl group, and the like; R
7
represents a hydrogen atom or a methyl group; R
8
and R
9
each independently represent a hydrogen atom or an alkyl group; Y represents a nitrogen atom or a group represented by the following formula (1-1):
A
1
represents an alkylene group which has at least one group selected from —O—, —OCO—, —COO—, —NHCO—, —CONH—, —NHCONH— and an arylene group in the chain, and the like; A
2
represents —NH— or —O—; An
−
represents an anion containing an aryl group having an electron-withdrawing substituent, and the like; n represents an integer of 0 to 3; R
8
and R
9
may form a cyclic structure of a 5 to 6 membered ring together with —N—(CH
2
)
n
—Y— bonding thereto.)