Competition of Several Energy-Transport Initiation Mechanisms Defines the Ballistic Transport Speed.

ABSTRACT: The ballistic regime of vibrational energy transport in oligomeric molecular chains occurs with a constant, often high, transport speed and high efficiency. Such a transport regime can be initiated by exciting a chain end group with a mid-infrared (IR) photon. To better understand the wavepacket formation process, two chemically identical end groups, azido groups with normal, ¹⁴N₃-, and isotopically substituted, ¹⁵N₃-, nitrogen atoms, were tested for wavepacket initiation in compounds with alkyl chains of n = 5, 10, and 15 methylene units terminated with a carboxylic acid (-a) group, denoted as ¹⁴N₃Cn-a and ¹⁵N₃Cn-a. The transport was initiated by exciting the azido moiety stretchin

SUBMITTER: Nawagamuwage SU 

PROVIDER: S-EPMC8287563 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature