MULTIPHONON UP-PUMPING AND MOLECULAR HOT-SPOTS IN SUPERHEATED POLYMERS STUDIED BY ULTRAFAST OPTICAL CALORIMETRY

被引：44

作者：

WEN, XN

TOLBERT, WA

DLOTT, DD

机构：

[1] School of Chemical Sciences, University of Illinois at Urbana Champaign, Noyes Laboratory, Urbana, IL 61801

来源：

CHEMICAL PHYSICS LETTERS | 1992年 / 192卷 / 2-3期

关键词：

D O I：

10.1016/0009-2614(92)85472-M

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ultrafast temperature jump experiments (DELTA-T = 140-degrees-C, dT/dt = 10(12) deg/s) are performed on polymers doped with small concentrations of dyes which function as point sources of phonons (molecular heaters) and thermometers. Internal conversion, multiphonon up-pumping and vibrational cooling of dyes in the polymer, occurring on the 0.1 to 100 ps time scale, are investigated.

引用

页码：315 / 320

页数：6

共 10 条

[1]

[Anonymous], UNPUB

[2]

[Anonymous], 1986, LASERS

[3] SHOCKED MOLECULAR-SOLIDS - VIBRATIONAL UP PUMPING, DEFECT HOT SPOT FORMATION, AND THE ONSET OF CHEMISTRY [J].