Why aromatic imines are weakly fluorescent?

More Lucas Fonseca Bezerra's questions See All

What is the relationship between the pi-sextets and the absorption spectrum of a polyciclic aromatic hydrocarbon?

Could anyone suggest me some papers to get a better understanding of Clars model and UV-Vis spectroscopy ?

31 December 2018 5,846 2 View

Can anyone sugest me some articles to get familiar with Theoretical chemistry?

I want to get underground knowledge about this topic and more specifically DFT method.

04 May 2018 3,566 10 View

Can I attribute sensitizer luminescence quenching caused by oxygen to singlet oxygen generation?

Molecular oxygen can quench luminescence signal of fluorophores. I want to know if I can attribute this phenomenon only to singlet oxygen generation in a organic media. I plan to perform...

03 April 2018 8,203 3 View

Is there any singlet oxygen sensor that can be used under UV irradiation?

I want to measure singlet oxygen generated by organic molecules under blue or UV light irradiation, however the most comon sensor DPBF undergoes photochemical degradation in this condition and I...

03 April 2018 7,919 3 View

Can anyone help me in a syntheses of an aromatic imine (schiff base)?

I'm trying to react a aromatic aldehyde with the blue toluidine dye wich has a NH2 group atached on the aromatic ring. I performed it in methanol with molecular sieves adding 5 drops of acetic...

01 February 2018 7,001 5 View

Hello researchers Is this a random laser or just fluorescence?

I am using Rhodamine6G as gain medium and silver nanoparticles as scatterers on a microscope slide and laser input 532 nm comes from above.

09 August 2024 9,894 2 View

Weak DAPI staining after immunohistochemistry - how to improve?

After immunohistochemistry of previously fixed in PFA and EtOH and then frozen 20 μm sections of zebrafish brain, DAPI staining is very weak (right) compared to the same sections stained without...

05 August 2024 9,637 2 View

Are there any commercially available Donkey anti-Alpaca secondary antibodies?

Are there any fluorescently labeled anti-Alpaca secondary antibodies raised in Donkey? So far I have only been able to find anti-Alpaca secondaries raised in Goat. Or is this not possible due to...

04 August 2024 4,255 1 View

Why results of ROS flurescence are negative as there was no bacteria within?

Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...

04 August 2024 5,974 3 View

How to calculate the molar proportions of the oxides from the XRF analyses?

02 August 2024 2,565 2 View

Conjugation of PEG-Amine to an Amino Acid Using EDC?

I am attempting to conjugate PEG to an amino acid at the C-terminus, for the purposes of producing nanoparticles. I have been told that PEG modified with amine groups can be used for this purpose,...

31 July 2024 2,033 1 View

EDC carbodiimide and NHS easter 's half life among different pH?

It has been long known that EDC carbodiimide and NHS easter's half life agains hydrolysis are highly related to pH. However, very surprisingly, not yet found a paper giving a table/chart of their...

25 July 2024 8,738 0 View

What does the difference \lambda_j - \lambda_{j+1} represent in relation to the conjugate partition of \lambda?

For a partition of an integer \lambda, what does the difference \lambda_j - \lambda_{j+1} represent in relation to the conjugate partition, , with \lambda_j being the j-th element of \lambda?

23 July 2024 8,008 1 View

How to quantify the fluorescence intensity of only the merge area of an image using ImageJ software?

Dear All: I have to quantify the fluorescence intensity of cells that are fluorescent to two different markers, so i'm interested in finding out if this is possible. Previously I have...

22 July 2024 8,770 1 View

How to determine LOD values?

I am performing fluorescence experiments using a ligand to detect metal ions. I want to determine the Lowest Detection Limit (LOD) using the formula LOD = 3σ / K. However, I'm uncertain about...

19 July 2024 1,086 1 View