|
|
Spectroscopy
Chem 2230
Department
of Chemistry 
University of Pittsburgh
 
|
Please
click on the topic you would like more information on:
|
Course
Description:
|
|
In your undergraduate
analytical and physical chemistry courses you were exposed
to the general principles of measurements and spectroscopic
instrumentation. The fundamental atomic and physical properties
that one actually measures were probably discussed mostly
in your physical chemistry courses, while the measurement
and instrumentation issues were discussed in your analytical
courses. In Chem 2230, the aim is to develop a more fundamental
understanding of spectroscopic processes. We will also focus
on some of the key issues in the design of spectroscopic
measurements. What is the fundamental process or property
to be measured, and why will a particular measurement provide
the desired chemical insight? What are the boundary conditions
on the measurement? What levels of detection, sensitivity
and selectivity are required, and how can they be achieved?
What modules (sources, detectors, etc.) should be selected
for the measurement? What is the optimum way of doing the
experiment (e.g. the time or frequency domain)? Finally,
how can the quality of the measurement be assessed, and
how can the results be interpreted in terms of chemical
processes? Download
syllabus here.
|
back to
top
|
Instructor:
|
|
Professor
Sanford Asher
Room 701 Chevron Science
Center
phone: 412-624-8570
email: asher@pitt.edu
Office Hours will
be arranged in class and may be scheduled by appointment.
|
back to
top
|
Class
Meeting Times:
|
|
Tuesday and Thursday
from 5:30 p.m.to 7:15 p.m
Room 228, Eberle
Hall
First Class: Tuesday,
August 26th
Last Class: December
11th (Final Exam)
No Classes: October
2nd, October 9th, October 14th, October 30th, November 13th,
and November 27th.
|
back to
top
Course
Requirements:
|
|
James Ingle and Stanley Crouch,
Spectrochemical Analysis (Prentice Hall: NJ);
and Daniel Harris & Michael Bertolucci, Symmetry
& Spectroscopy (Dover Publications: NY).
These texts will be supplemented
by other required reading materials that will be distributed
in class or that will be available on reserve in the
Chemistry and Computer Science library (Eberly Hall).
In particular, much of the material in the last half
of the course will be based on the current chemical
literature. The books on reserve for this course cover
a wide range of material, some of which will help you
reinforce areas in which your background may be weak,
and others which cover material not included (or not
covered adequately) in the required text.
|
|
Problem Sets:
|
Problem sets will be assigned and collected, checked,
but not graded in detail. I expect you to do your homework
when it is due and your grade depends upon timely performance.
Answer keys will be placed on reserve in the Chemistry
library approximately one week after the problem sets
are handed out. You are STRONGLY urged to do the problem
sets on your own, and to refer to the answer keys only
after you have given the assignments your best effort.
|
|
Grading:
|
There will be three in-class exams,
each worth 22.5% of your grade. They will be given on
September 30th (Tues.), October 28th (Tues.) and
December 11 (Thurs.). Please inform me immediately
if you have any conflict with these dates. There will
be no make-up exams, but an oral exam will be given
if an exam is missed due to serious illness or demonstrated
extreme emergency.
Another 22.5% of your grade will
be based on a take-home exam about spectroscopic problems
described in the chemical literature. Details on this
assignment will be distributed early in mid November.
The assignment will be due on December 11, 2008.
There will be no exceptions.
The remaining 10% of your grade
depends upon classroom participation. Some concepts we
will cover are difficult. To achieve the intuitive understanding
desired, we must discuss the issues and look at them from
different view points. Please help! If you don't contribute
to the discussion, you will loose points!
|
back
to top
Course
Outline :
|
I. General Concepts
-
Wave, wavevector,
polarization (linear, circular)
-
Refractive index,
dielectric constant
-
Absorption/reflection/refraction
-
Readings:
IC ch 1, 2 (S ch. 7; M pp. 361-419)
-
Beer's law (absorption,
scattering) emission
-
Notation in quantum
mechanics
-
Absorption processes
in optical spectroscopy; atomic and molecular energetics
-
Absorption and
emission probabilities (intensities, lifetimes, bandshapes)
-
Readings:
IC ch. 12; (S ch. 13.3, 15.1-15.2, 16.1-16.4, 19.3;
M to be assigned)
|
|
II. Experimental
Approach: Aspects of Instrumentation
-
Sources
-
Optical elements, monochromators
-
Detectors
-
Noise, the meaning of results, phase
sens. Detection, autocorrelation
-
Readings: IC ch. 5,6, Appendix A;
(S ch. 10-12)
Note: The following topics will be among those included
in the case studies listed below:
-
Modulation, interferometry
-
T methods, including apodization, digital
filtering
-
Autocorrelation
-
Phase-sensitive detection
-
Pump-probe experiments
-
Hyphenated techniques (special issues
for interfacing separation/spectroscopy)
|
|
III. Spectroscopic
Techniques and Applications
- Atomic absorption: an illustration
of concepts
- UV-Vis absorption (including
so-called non-Beer's law issues)
- IR absorption, including dichroism,
sampling interferometry, Fourier Transforms
- Emission techniques (AE, ICP,
fluorescence, phosphorescence, IR)
- Raman and resonance Raman scattering
|
|
Key to Readings:
IC:
-
J.D. Ingle, Jr. and S. R. Crouch, Spectrochemical
Analysis (Prentice Hall: NY, 1988) (required text) D.C.
Harris & M.D. Bertolucci, Symmetry & Spectroscopy (Dover
Publications, NY 1989) (required text).
S:
M:
|
back to
top
Lecture
Calendar :
Problem
Sets :
|
|
|
|
|
|
