Temperature-dependent ultrasonic study on parity-violating phase   transitions of D- and L-alanine single crystals

doi:10.1039/b307831k

CORC > 北京大学 > 化学与分子工程学院

	Temperature-dependent ultrasonic study on parity-violating phase transitions of D- and L-alanine single crystals
	Wang, WQ ; Min, W ; Zhu, CF ; Yi, F
刊名	physical chemistry chemical physics
	2003
关键词	ENERGY DIFFERENCE ASYMMETRIC-SYNTHESIS ENANTIOMERS PEROVSKITES BEHAVIORS VALINE SEARCH FORCE NMR
DOI	10.1039/b307831k
英文摘要	Ultrasonic technology was utilized to probe the molecular parity violation on phase transitions of alanine enantiomers. Temperature-dependent longitudinal ultrasonic attenuation and velocity were measured in D- and L-alanine single crystals in the range of 200 K to 290 K. The D-alanine crystal showed a reversible second-order phase transition at 247 K, which was accompanied by a pronounced attenuation peak during both heating and cooling. The L-alanine crystal had a step-like attenuation transition also around 247 K, with a thermal hysteresis. Based on the established obvious difference of electron and nucleus spin properties between alanine enantiomers during the phase transition processes, which were unraveled by temperature dependent DC-magnetic susceptibility and H-1 CRAMPS ssNMR spectra experiments, spin-phonon coupling is proposed to account for the different ultrasonic velocity and attenuation behaviors between D- and L-alanine crystals near the transition temperature. The present ultrasonic study will mutually support and further correlate itself with previously conducted magnetic susceptibility and ssNMR spectra measurements in the perspective of both electron and nucleus spin properties of enantiomers.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000185740700027&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; Physics, Atomic, Molecular & Chemical; SCI(E); 15; ARTICLE; 18; 4000-4003; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151642]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang, WQ,Min, W,Zhu, CF,et al. Temperature-dependent ultrasonic study on parity-violating phase transitions of D- and L-alanine single crystals[J]. physical chemistry chemical physics,2003.
APA	Wang, WQ,Min, W,Zhu, CF,&Yi, F.(2003).Temperature-dependent ultrasonic study on parity-violating phase transitions of D- and L-alanine single crystals.physical chemistry chemical physics.
MLA	Wang, WQ,et al."Temperature-dependent ultrasonic study on parity-violating phase transitions of D- and L-alanine single crystals".physical chemistry chemical physics (2003).