Alan MacDiarmid

Biography

Alan Graham MacDiarmid, born on April 14, 1927, in Masterton, New Zealand, grew up during tough economic times. He attended Hutt Valley High School and Weir House before starting at Victoria University of Wellington, where he first got interested in chemistry. Later, he earned advanced degrees from the University of Wisconsin–Madison and Sidney Sussex College at the University of Cambridge. MacDiarmid spent most of his career at the University of Pennsylvania, becoming well-known for his research and teaching.

MacDiarmid's most famous work resulted from a partnership with physicist Alan Heeger and Japanese chemist Hideki Shirakawa in the late 1970s. They discovered that polyacetylene, a type of plastic, could conduct electricity when treated with certain chemical dopants. This finding challenged the old belief that organic polymers couldn't carry electrical current, leading to new developments in materials science and chemistry, especially in areas like flexible electronics and solar energy conversion.

In 2000, MacDiarmid, Heeger, and Shirakawa shared the Nobel Prize in Chemistry for this discovery. The Royal Swedish Academy of Sciences recognized their work on electrically conductive polymers as a groundbreaking contribution. MacDiarmid also received New Zealand's Rutherford Medal and was appointed to the Order of New Zealand to honor his scientific contributions. He became a Fellow of the Royal Society and received many other accolades, including the Chemical Pioneer Award in 1984, the Centenary Prize in 1982, the William H. Nichols Medal in 2002, and the Oesper Award in 2003. In 2004, China gave him the Friendship Award, highlighting his global influence.

Besides his lab work, MacDiarmid was a passionate teacher committed to inspiring students. He valued science education and encouraged young people in New Zealand and beyond to consider science careers. Even later in life, he visited schools and spoke about the importance of curiosity and persistence in science. He was proud of his New Zealand roots while building a successful career in the U.S., holding roles that reflected his connection to both countries.

Alan MacDiarmid passed away on February 7, 2007, in Drexel Hill, Pennsylvania, at 79, after a fall at home. His contributions had already transformed materials science, and his work continued to inspire researchers in organic semiconductors, electrochromic devices, and various technologies relying on conductive polymers.