A 1,8 naphthalimide anchor rhodamine B based FRET probe for ratiometric detection of Cr3+ion in living cells
摘要:
A 2-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)acetaldehydeanchored rhodamine B based probe, RDNAP detects Cr3+ ion by fluorescence resonance energy transfer (FRET) process in aqueous buffered acetonitrile media (7:3, v/v). Conversely, conjugation of 2-(1,3-dioxo-6-(piperidin-1-yl)-1H-benzo[de]isoquinolin-2(3H)-yl) acetaldehyde with rhodamine B provides another probe, RDNAP-PY that undergoes Cr3+ assisted ratiometric fluorescence and colorimetric change in the same media. RDNAP-PY provides higher FRET efficiency and detects as low as 1.81 x 10(-6) M Cr3+ with an association constant, 15.9 x 104 M-1. Other common ions do not interfere. RDNAP-PY efficiently images intracellular Cr3+ in live Hep3B, MCF-7, HeLa, SiHa and HEK 293T cells under fluorescence microscope in a ratiometric and time dependent manner. H-1 NMR titration and DFT studies strongly support experimental findings.
Directional control of π-stacked building blocks for crystal engineering: the 1,8-naphthalimide synthon
作者:Daniel L. Reger、J. Derek Elgin、Radu F. Semeniuc、Perry J. Pellechia、Mark D. Smith
DOI:10.1039/b504998a
日期:——
Incorporating the 1,8-naphthalimide group into bis(pyrazolyl)methane ligands triggers the association of their rhenium(I) complexes into directionally ordered dimers in both solution and solid state, as demonstrated by ES+/MS, PGSEâNMR and X-ray diffraction studies.
正如 ES+/MS、PGSEâNMR 和 X 射线衍射研究证明的那样,在双(吡唑基)甲烷配体中加入 1,8-萘二甲酰亚胺基团,可促使其铼(I)配合物在溶液和固体状态下形成定向有序的二聚体。
First row transition metal complexes of a hexadentate pyrazole-based bispidine ligand
作者:Peter Comba、Michael Morgen、Hubert Wadepohl
DOI:10.1016/j.poly.2012.06.035
日期:2013.3
The efficient synthesis of a new hexadentate pyrazole-based bispidine-ligand and its first-row transition metal complexes (Fe-II, Co-II, Ni-II, Cu-II and zn(II)) is reported. There are interesting structural differences between the present and earlier hexadentate bispidine ligands (tetragonally versus trigonally distorted octahedral geometries). The structural analysis of the metal-free ligand and the five complexes shows that the structure enforced by the rigid pyrazole-based bispidine is best described as distorted trigonal prismatic, and this also emerges from the spectroscopic analysis. (C) 2012 Elsevier Ltd. All rights reserved.
Saito; Takayama; Sakurai, Journal of the American Chemical Society, 1994, vol. 116, # 6, p. 2653 - 2654
作者:Saito、Takayama、Sakurai
DOI:——
日期:——
A 1,8 naphthalimide anchor rhodamine B based FRET probe for ratiometric detection of Cr3+ion in living cells
A 2-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)acetaldehydeanchored rhodamine B based probe, RDNAP detects Cr3+ ion by fluorescence resonance energy transfer (FRET) process in aqueous buffered acetonitrile media (7:3, v/v). Conversely, conjugation of 2-(1,3-dioxo-6-(piperidin-1-yl)-1H-benzo[de]isoquinolin-2(3H)-yl) acetaldehyde with rhodamine B provides another probe, RDNAP-PY that undergoes Cr3+ assisted ratiometric fluorescence and colorimetric change in the same media. RDNAP-PY provides higher FRET efficiency and detects as low as 1.81 x 10(-6) M Cr3+ with an association constant, 15.9 x 104 M-1. Other common ions do not interfere. RDNAP-PY efficiently images intracellular Cr3+ in live Hep3B, MCF-7, HeLa, SiHa and HEK 293T cells under fluorescence microscope in a ratiometric and time dependent manner. H-1 NMR titration and DFT studies strongly support experimental findings.
New modular manganese(i) tricarbonyl complexes as PhotoCORMs: in vitro detection of photoinduced carbon monoxide release using COP-1 as a fluorogenic switch-on probe
as novel photoactivatable CO-releasing molecules (PhotoCORMs). The influence of the imine vs. amine group in the ligands on the electronic structure and the photophysical behavior was investigated with the aid of DFT and TDDFT calculations. Solution IRstudies on selected compounds allowed identification of intermediates resulting from the photoreaction. Finally, light-induced COrelease from a model