Chemistry 2223B Lecture Notes - Lecture 1: Absorbance, Globin, Hemoglobin

• School: Western University
• Department: Chemistry
• Course: Chemistry 2223B
• Professor: Brian Pagenkopf

Document Summary

Colours and chromophores: this section discusses the absorption of light by organic compounds, the related photophysical processes, and the spectroscopic methods used to measure light absorption and emission. Examples of important chromophores will be introduced: background material, from prior chem courses, that is important is listed below. Colours and chromophores (cid:121) 2: perception of colour, white light is comprised of a continuum of different colours. If the object absorbs a specific colour of light, that colour is. Subtracted from the light that is reflected from, or transmitted through, the object. A colour wheel serves as a useful guideline. White light contains all colours that balance out each other. Reflected or transmitted light missing green has an excess of red and is perceived as being red: using this complementary-colour system, we can explain the colours of various objects when they are illuminated by white light. Everything absorbed: the complementary-colour system only works when an object is illuminated by white light.