Is it possible to determine the presence of a terminal alkyne by XPS? Should I see a contribution at greater or lesser eV than the C-C?

More Solange Selzer's questions See All

Saving the publication list?

How can I save the list of publications to an external location? Best regards Edgar Selzer

02 November 2023 1,957 5 View

Are there mycologists here (or researchers who carry out research involving fungi) based at the UNIVERSITY OF SEVILLA or the UNIVERSITY OF CADIZ?

28 March 2023 4,030 0 View

Scientific Paper Research topic with hypothesis and statistical computation?

i need a Scientific Paper Research topic with hypothesis and statistical computation

20 March 2023 9,809 1 View

How can I synchronize CD8 T cells to mark with cell trace violet and measure proliferation peaks?

hello everyone, I was wondering if anyone knows any method or protocol to synchronize CD8 T cells activated with peptide, because I want to mark them with cell trace violet and grow them in vitro...

06 December 2022 5,557 0 View

Circulating tumor cells and paradoxal outcome/Had you ever seen it?

Higher CTCs counts are directly related to relapse and worse survival in many tumor. I had recently followed a group of breast cancer patients were CTCs counts less than 1 were related to worse...

05 July 2020 5,780 0 View

What is a good GPS tracker for international research in urban areas?

I focus on urban displacement and mobilities and I am looking for a good/cheap gps tracker to document people's urban mobility. Some of my work is in the global south and so I cannot rely on...

27 April 2020 6,725 4 View

Which tool could I use to research the content and frequency of a group on Whatsapp (I am a member of the group) ?

Networking Learning community Social interactions for cooperative learning

19 April 2016 5,627 6 View

Does anybody know archaeological examples of beads that are not used as body ornaments but used as decoration for objects (pots, instruments...)?

I am interested in relevant archaeological evidences from any areas and periods.

25 June 2014 1,902 14 View

Is the in vitro RNA transcription efficiency, in term of final amount of RNA produced, different using a plasmid containing more than 1 inserted gene?

I want to inject fly embryos with a collection of 50 different RNAs that I would like to in vitro transcribe from the lowest number of plasmids. If I insert in the plasmid 5 sequences (or more if...

10 March 2014 6,057 1 View

Can I use antibiotics with iPSCs?

I wanted to expand purchased iPSC. According to my protocol I should not use antibiotics. I am expanding them under feeder free conditions (coating with Geltrex) and using complete Essential 8...

22 September 2013 9,058 3 View

Should I include H atom into C3N5 when i am doing DFT modelling?

Hi all, my experimental XPS results shown that my C3N5 sample consists of N-H bond, hence in this case I should incorporate the N-H bond into my DFT modelling. However, I do notice several papers...

07 August 2024 8,414 2 View

Is artifacts in XPS possible to build high deviation in binding energy larger than 5 eV??

Hello. Thanks for your consideration to see my question. Recently, I conducted XPS anaylsis of g-CN that is prepared from thermal polycondensation of DCDA, so-called conventional bulk-g-CN,...

30 July 2024 9,824 2 View

How to remove/ replace trifluoroacetate countertop after deprotection?

After deprotection of the tert-butyl ester to generate the carboxylic acid in chloroform with TFA, my compound‘s pyridine moiety forms a TFacetate ammonium salt (small molecule drug, not a...

29 July 2024 9,753 3 View

What is the principle/mechanism behind aging of carbon (graphite) containing refractory mix for isostatically pressed refractories?

The resin bonded carbon containing refractories are aged before use. How time of aging is determined? And mechanism behind aging.

23 July 2024 3,205 0 View

Can Langmuir constant related to bonding energy (Kl) and Freundlich exponent (1/n) indicative of ads intensity show opposite trends with temperature?

The adsorbate is Arsenic and the adsorbent is a soil

18 July 2024 332 8 View

How to create parameter and coordinate files for ligand in amber when FATAL error (maybe due to duplicate bond specifications) happens?

Hello, I'm trying to create parameter and coordinate files for a drug (PRG-A01) found on the following page: http://www.probechem.com/products_PRG-A01.html I used the guide made by Michael...

17 July 2024 3,472 3 View

What does an additional peak in FTIR between 3100 and 3300 nm affect the quality of the material, benzethonium chloride USP??

I do not know much about FTIR! The material Benzethonium Chloride USP was compared to a reference standard in regards to FTIR, as per the USP testing: Identification B. Infrared absorption (FTIR),...

16 July 2024 6,918 7 View

How can I calculate wt% of material from the area obtained from XPS data?

I have calculated the peak area from the XPS data. From this data how can I calculate the wt% of the material.

14 July 2024 6,951 1 View

Asked a separate ways?

Dear all, I have a question regarding ways to separate ammonium nitrate and phosphorus pentoxide？

12 July 2024 3,164 2 View

Does the potentiostat have to be in a fume hood when polymerising the PANI?

I will polymerise Aniline on ITO glass WE, using 1M of H2SO4 and a potentiostat. However, I am not sure if I have to do the electrochemical polymerisation inside a hood. Is it necessary? Is the...

10 July 2024 2,937 3 View

Konstantin I. Maslakov

It's possible that your spectrum has not been properly charge referenced.

Solange Selzer

Originally it had the spectrum shift to higher energies. I corrected the spectrum taking into account C-C link (284.8 eV) as a reference and obtained that value.

Jhonatan Rodriguez-Pereira

Hi Solange Selzer, most likely, you have a charge effect on your sample and that is why that signal appears at 282eV.