hypsochromic shift

Shift of a spectral band to higher frequency or shorter @W06659@ upon substitution or change in medium. It is informally referred to as @B00688@.
See also:
bathochromic shift
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1124 [Terms] [Paper]
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2247 [Terms] [Paper]