Results 341 to 350 of about 3,329,276 (417)

Capsulation of AuNCs with AIE Effect into Metal-Organic Framework for the Marriage of a Fluorescence and Colorimetric Biosensor to Detect Organophosphorus Pesticides.

Analytical Chemistry, 2021
Organophosphorus pesticides (OPs) can inhibit the activity of acetylcholinesterase (AChE) to induce neurological diseases. It is significant to exploit a rapid and sensitive strategy to monitor OPs.
Yuepeng Cai, Hongshuai Zhu, Weichi Zhou, Ziyin Qiu, Congcong Chen, Aori Qileng, Kangshun Li, Yingju Liu   +7 more
semanticscholar   +1 more source

Breaking the diffraction resolution limit by stimulated emission: stimulated-emission-depletion fluorescence microscopy.

Optics Letters, 1994
We propose a new type of scanning fluorescence microscope capable of resolving 35 nm in the far field. We overcome the diffraction resolution limit by employing stimulated emission to inhibit the fluorescence process in the outer regions of the ...
S. Hell, Jan Wichmann
semanticscholar   +1 more source

Chlorophyll Fluorescence and Photosynthesis: The Basics

, 1991
BIOPHYSICAL BASIS O F FLUORESCENCE EMISSION FROM CHLOROPLASTS . . . . .. . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .
G. Krause, E. Weis
semanticscholar   +1 more source

FLUORESCENCE AND FLUORESCENCE CONVERSION [PDF]

, 1965
Abstract : The quenching constant for the iodide quenching of the fluorescence of riboflavin phosphate was measured at pH 5 and at pH 8. The value of this constant (K1) at the lower pH (where the phosphate group is unionized), was independent of the ionic strength, mu.
openaire   +1 more source

Carbon dots: synthesis, formation mechanism, fluorescence origin and sensing applications

Green Chemistry, 2019
We systematically summarize the recent progress in the green synthesis and formation mechanism of CDs with the hope to provide guidance for developing CDs with the concept of green chemistry.
M. Liu, B. Chen, Chun Mei Li, C. Huang
semanticscholar   +1 more source

Band Gap Fluorescence from Individual Single-Walled Carbon Nanotubes

Science, 2002
Fluorescence has been observed directly across the band gap of semiconducting carbon nanotubes. We obtained individual nanotubes, each encased in a cylindrical micelle, by ultrasonically agitating an aqueous dispersion of raw single-walled carbon ...
M. O'connell, S. Bachilo, C. Huffman, V. C. Moore, M. Strano, E. Hároz, K. Rialon, P. Boul, William H. Noon, C. Kittrell, Jianpeng Ma, Jianpeng Ma, R. Hauge, R. Weisman, R. Smalley   +14 more
semanticscholar   +1 more source

A Fluorescence and Fluorescence Probe Study of Benzonaphthyridines

Journal of Fluorescence, 2011
A series of benzo[b][1,8]naphthyridines has been synthesized by Friedländer condensation of 2-aminoquinoline-3-carbaldehyde 1 (o-aminoaldehyde) with alicyclic ketones in basic medium. Benzonaphthyridines branched with various side-chains and substituents are prepared with the aim of being investigated as a good fluorescent material.
Ramhari V. Rote, Deepak P. Shelar, Madhukar N. Jachak, Sandeep R. Patil   +3 more
openaire   +3 more sources

Recent advances in organic thermally activated delayed fluorescence materials.

Chemical Society Reviews, 2017
Organic materials that exhibit thermally activated delayed fluorescence (TADF) are an attractive class of functional materials that have witnessed a booming development in recent years. Since Adachi et al.
Zhiyong Yang, Z. Mao, Zongliang Xie, Yi Zhang, Siwei Liu, Juan Zhao, Jia-rui Xu, Zhenguo Chi, M. P. Aldred   +8 more
semanticscholar   +1 more source

Fluorescence spectroscopy of tissue: recovery of intrinsic fluorescence from measured fluorescence

Applied Optics, 1996
We present a method for recovering the intrinsic fluorescence coefficient, defined as the product of the fluorophore absorption coefficient and the fluorescence energy yield, of an optically thick, homogeneous, turbid medium from a surface measurement of fluorescence and from knowledge of medium optical properties.
Craig M. Gardner, Steven L. Jacques, Ashley J. Welch   +2 more
openaire   +3 more sources

Fluorescence Microscopy

2019
In this two-part chapter, the background to confocal microscopy and two-photon fluorescence microscopy is first presented, with a detailed description of the optical setup. This is followed by a critical account of the many super-resolution techniques: coordinated stochastic fluorescence microscopy (photoactivation localization microscopy ...
Alberto Diaspro, Paolo Bianchini, Francesca Cella Zanacchi, Luca Lanzanò, Giuseppe Vicidomini, Michele Oneto, Luca Pesce, Isotta Cainero   +7 more
openaire   +4 more sources