[Phys-L] Particle in a Box experiment

[John Sohl <jsohl@weber.edu>]

Thank you Jim,

I'll look these over. I'm writing the syllabus for spring semester's
advanced physics lab right now. This might find its way into that course.

Happy New Year to everyone,

John

- - - -
John E. Sohl, Ph.D.
Professor of Physics
Weber State University
1415 Edvalson St., Dept 2508
Ogden, UT 84408-2508

voice: (801) 626-7907, fax: (801) 626-7445
cell: (801) 476-0589

---------- Forwarded message ----------
> From: Jim Diamond <jiminoregon@gmail.com>
> To: phys-l@www.phys-l.org
> Cc:
> Date: Thu, 31 Dec 2015 11:39:44 -0800
> Subject: Re: [Phys-L] Data discussion and Infinite square well
> John and everyone on the list, Happy New Year!
>
> These are UV-Vis spectra.
>
> There is some interesting background.
>
>    - because the pi bond order is reduced upon absorption in the pi->pi*
>    transition, there is strong vibronic coupling to the CC stretch
> vibration,
>    which modulates the obsorption spectrum dramatically (see the "boy scout
>    salute" passage in the reference below)
>    http://www.ks.uiuc.edu/History/polyene/
>    - the fluorescing state in longer polyenes is not the absorbing state,
>    leading to a gap between absorption and emission. The history of some of
>    this regarding the contributions of Klaus Schulten to understanding the
>    properties of the fluorescing state is recounted in the above link. This
>    also recounts the part of polyene history contributed by Bryan Kohler,
> who
>    die far too early from a brain tumor at the age of 56.
>    - There are several versions of experiments floating around the
>    internets:
>    - Diphenylpolyene Dye Spectra
>
> https://www.d.umn.edu/~psiders/courses/chem4644/labinstructions/dyespec_tddft.pdf
>    - Particle in a Box
>
> http://www.uta.edu/faculty/bradp/resources/chem3175/3175_PIB_examples.pdf