The same procedure with other solvents (like toluene, hexane) doesn't bring the color change.
Amines are easily oxidised in presence of oxygen and perhaps this can explain the colour formation.
Silica is acidic and hence can form a salt with TEA, but this should not result in colouring.
may be due to the stoichiometric excees nitrogen may form N-O bonding ....?
"A" is the polymer having low molecular weight and low surface energy. "B" is the polymer with high molecular weight and high surface energy. In a mixture "B" is slightly large concentration than...
10 November 2016 9,858 2 View
Many research contributions achieved transparency with lanthanide elements. Can anyone share your experiences to improve transparency without using lanthanides?
03 April 2015 7,703 6 View
Which is the best way to decrease the surface tension? Surfactant or boiling? Is contact angle same in same surface tension of soap water and boiling water solutions?
11 December 2014 8,020 6 View
Perovskites are becoming popular materials for solar cells.This is mainly due to the optimal band gap and property of ambipolar diffusion of electrons and holes.
11 December 2014 4,273 4 View
If it is. whether the self-assembly can be exist in the absence of magnetic field?
11 December 2014 9,916 4 View
Nano/micro roughness causes an increase or decrease in the the contact angle depending on the nature of solid substrates. Trapped air causes an increase in the contact angle for hydrophobic...
11 December 2014 8,920 6 View
Surface tension of pure water is 72 mN/m. But it varies with the addition of acids and bases. Why?
10 November 2014 3,122 5 View
Hi. Please tell me what guidelines should i need to follow for questionaries' type research work in India. It is not hospital based work, we are conduction basic institutional based qualitative...
03 March 2021 2,037 3 View
Hello all, I'm currently working on my undergraduate thesis and I'm having difficulties trying to access KLD Stats and Sustainalytics because my campus Airlangga University and apparently other...
02 March 2021 8,525 1 View
Hi everyone, I'm studying Marketing and I would like to write my PhD thesis on the topic of pricing. Any specific ideas?
02 March 2021 9,706 5 View
02 March 2021 3,060 3 View
02 March 2021 932 1 View
how to calculate BEHAVIOURAL REGULATION IN EXERCISE QUESTIONNAIRE BREQ 3 ,which contain 24 questions and each question has 5 answers (0- Strongly disagree , 1-disagree, 2- Neither agree nor...
02 March 2021 811 3 View
Please provide Book Title and author name
02 March 2021 9,059 3 View
An article that is published as a case study in the SJR listed journal. How much value is added to a researcher career? How it is evaluated by a scientific researcher/University admission...
02 March 2021 9,661 3 View
We have one plant, the local people using this for controlling blood sugar, the toxicity and antidiabetic activity of the plant is not reported yet, please guide from whag should be the process ?...
02 March 2021 2,300 1 View
I'd like to perform single-strand conformation polymorphism (SSCP) in my thesis, however I cannot control the temperature of the vertical PAGE since we are using the conventional tanks. Is there a...
02 March 2021 9,157 1 View