Charge-Transfer Emission in Nonplanar Three-Coordinate Organoboron Compounds for Fluorescent Sensing of Fluoride

2006 ◽  
Vol 45 (33) ◽  
pp. 5475-5478 ◽  
Author(s):  
Xiang Yang Liu ◽  
Dong Ren Bai ◽  
Suning Wang
Keyword(s):  
Charge Transfer ◽  
Organoboron Compounds ◽  
Fluorescent Sensing

Through space charge-transfer emission in lambda (Λ)-shaped triarylboranes and the use in fluorescent sensing for fluoride and cyanide ions

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 45668-45678 ◽  
Author(s):  
He Xi ◽  
Yang Liu ◽  
Chun-Xue Yuan ◽  
Ye-Xin Li ◽  
Lei Wang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Space Charge ◽  
Fluorescent Sensors ◽  
Organoboron Compounds ◽  
Fluorescent Sensing ◽  
Efficient Strategy ◽  
New Class

By introducing a twisted and non-conjugated Λ-shaped TB scaffold to triarylboranes, we provide an efficient strategy to develop a new class of organoboron compounds applied as colorimetric and ratiometric fluorescent sensors for fluoride and cyanide.

Graphene oxide-sensitized molecularly imprinted opto-polymers for charge-transfer fluorescent sensing of cyanoguanidine

2017 ◽  
Vol 235 ◽  
pp. 14-20 ◽  
Author(s):  
Huilin Liu ◽  
Kaiwen Zhou ◽  
Xiaomo Chen ◽  
Jing Wang ◽  
Shuo Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Charge Transfer ◽  
Molecularly Imprinted ◽  
Fluorescent Sensing

An Intramolecular Charge Transfer Fluorescent Probe: Synthesis, Structure and Selective Fluorescent Sensing of Cu+2

2011 ◽  
Vol 21 (4) ◽  
pp. 1813-1823 ◽  
Author(s):  
Jayaraman Jayabharathi ◽  
Venugopal Thanikachalam ◽  
Natesan Srinivasan ◽  
Karunamoorthy Jayamorthy ◽  
Marimuthu Venkatesh Perumal
Keyword(s):  
Charge Transfer ◽  
Fluorescent Probe ◽  
Intramolecular Charge Transfer ◽  
Fluorescent Sensing

Tunable fluorescent sensing of cysteine and homocysteine by intramolecular charge transfer

2010 ◽  
Vol 22 (6) ◽  
pp. 380-386 ◽  
Author(s):  
Yiting Wang ◽  
Jinchong Xiao ◽  
Sujuan Wang ◽  
Bo Yang ◽  
Xinwu Ba
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Fluorescent Sensing

Study of charge transfer in FeTi

1983 ◽  
Vol 41 ◽  
pp. 296-297
Author(s):  
J. Taft∅
Keyword(s):  
Charge Transfer ◽  
Charge Distribution ◽  
Electron Scattering ◽  
Periodic System ◽  
Electron Distribution ◽  
Scattering Amplitude ◽  
Transition Elements ◽  
Hartree Fock ◽  
Cscl Structure ◽  
The Right

It is well known that for reflections corresponding to large interplanar spacings (i.e., sin θ/λ small), the electron scattering amplitude, f, is sensitive to the ionicity and to the charge distribution around the atoms. We have used this in order to obtain information about the charge distribution in FeTi, which is a candidate for storage of hydrogen. Our goal is to study the changes in electron distribution in the presence of hydrogen, and also the ionicity of hydrogen in metals, but so far our study has been limited to pure FeTi. FeTi has the CsCl structure and thus Fe and Ti scatter with a phase difference of π into the 100-ref lections. Because Fe (Z = 26) is higher in the periodic system than Ti (Z = 22), an immediate “guess” would be that Fe has a larger scattering amplitude than Ti. However, relativistic Hartree-Fock calculations show that the opposite is the case for the 100-reflection. An explanation for this may be sought in the stronger localization of the d-electrons of the first row transition elements when moving to the right in the periodic table. The tabulated difference between fTi (100) and ffe (100) is small, however, and based on the values of the scattering amplitude for isolated atoms, the kinematical intensity of the 100-reflection is only 5.10-4 of the intensity of the 200-reflection.

Direct imaging of charge transfer

1996 ◽  
Vol 54 ◽  
pp. 680-681
Author(s):  
Yimei Zhu ◽  
J. Tafto
Keyword(s):  
Charge Transfer ◽  
Electron Diffraction ◽  
Scattering Amplitude ◽  
High Temperature Superconductors ◽  
Charge Carriers ◽  
Image Charge ◽  
Net Charge ◽  
Long Time ◽  
Electron Holes ◽  
First Time

The electron holes confined to the CuO2-plane are the charge carriers in high-temperature superconductors, and thus, the distribution of charge plays a key role in determining their superconducting properties. While it has been known for a long time that in principle, electron diffraction at low angles is very sensitive to charge transfer, we, for the first time, show that under a proper TEM imaging condition, it is possible to directly image charge in crystals with a large unit cell. We apply this new way of studying charge distribution to the technologically important Bi2Sr2Ca1Cu2O8+δ superconductors.Charged particles interact with the electrostatic potential, and thus, for small scattering angles, the incident particle sees a nuclei that is screened by the electron cloud. Hence, the scattering amplitude mainly is determined by the net charge of the ion. Comparing with the high Z neutral Bi atom, we note that the scattering amplitude of the hole or an electron is larger at small scattering angles. This is in stark contrast to the displacements which contribute negligibly to the electron diffraction pattern at small angles because of the short g-vectors.

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