Vihanga Munasinghe

5 Questions 13 Answers 0 Followers

Questions related from Vihanga Munasinghe

What wavelength (LC or MLCT) should be used to excite a Ir(III) complex to obtain an emission spectra ?

This question is regarding an Ir(ppy)2(bpy) complex. After analysing the UV-Vis spectrum (attached below) of the complex I could assign[1], λabs for (spin allowed)LC π -π * = 254 nm and λabs for...

29 April 2020 4,275 0 View

How to remove TBTA after click reaction (apart from using column separation)?

CuAAC (Cu catalyzed azide-alkyne cycloadition) product and TBTA has similar Rf values. Hence, it id hard to isolate product using column/prep TLC. Any suggestions to remove TBTA will be greatly...

21 November 2018 2,000 5 View

What can we predict from the peak intensity ratios of a powder XRD?

When comparing a PXRD of MIL-100 MOF with known literature it was observed that there are peaks on the same 2θ values but in different intensity ratios. Can I still say that I have synthesized the...

17 November 2016 9,650 14 View

Is MOF-2 stable when exposed to air ?

I have synthesized an already published procedure to get MOF-2. TGA performed for the synthesized MOF was matched with the reported data. But the PXRD results differed. PXRD was done about a month...

31 October 2016 2,142 20 View

What are the Reasons for Cu to leach from HKUST-1 Metal organic framework ?

A highly conjugated organic molecule was tried to load to HKUST-1 pores by dissolving the organic substance in ethanol and stirring with HKUST-1 for a day. After a day the sample was centrifuged...

20 October 2016 7,223 13 View