photochemistry inside a NMR tube- summary
T. Pratum (pratum@u.washington.edu)
Thu, 6 May 1999 21:00:49 -0700 (PDT)
I had an absolutely fantastic response to my question about this a couple
of days ago. I wish I could personally thank all those who responded, but
there were just too many.
Most respondents mentioned the work of Robert Kaptein (Utrecht), who has a
recent paper in JMR (April; JMR 137, 443 (1999)). Steve Boxer at Stanford
was also mentioned, and I did look up some of his older work from the
mid-1980s and found some interesting information there. Another reference
from the mid 1980's that was suggested and that I found very useful is:
JMR 63, 199 (1985); this paper discusses specifically what we were
thinking of doing and so is right on point. Some provided specific
instructions regarding how they set up their particular experiment,
and these are very valuable.
Some general points that were made: arc lamps generate rf and also may not
function in high field regions. Also, bringing the light in from the top,
while seeming to be simple, may not be the best idea. Sample ejection and
insertion, and also irradiation of the sensitive volume of the coil is
much easier if the light is brought in from the side (much easier in a
wide bore magnet, which we don't have at the moment).
I am sure all of this will save us a lot of wasted effort when we go to
set this up, thanks again.
Tom Pratum
Dept of Chemistry
Box 351700
Univ of Washington
pratum@u.washington.edu
http://weber.u.washington.edu/~pratum