Please use this identifier to cite or link to this item:
|Title:||Precise habit modification of polar DL-alanine crystal by control of supersaturation|
|Citation:||Han, G., Chow, P.S., Tan, R.B.H. (2011-09-07). Precise habit modification of polar DL-alanine crystal by control of supersaturation. Crystal Growth and Design 11 (9) : 3941-3946. ScholarBank@NUS Repository.|
|Abstract:||It has long been reported that a dl-alanine crystal grows considerably faster from its flat -c end than from its pointed +c end, showing typical unidirectional growth from the -c direction and exhibiting a polar needlelike habit. Surprisingly, our new experimental results reveal that the normally slow-growing hemihedral faces at the pointed +c end can undergo fast growth at high supersaturations, contrary to the postulation of the "relay" mechanism. At the same time, a new (001) face at the +c end develops, causing the initially pointed +c end to become flat and leading to a habit modification from needlelike to rodlike with an increase of supersaturation. Furthermore, both the flat (001) face at the +c end and the (001̄) face at the -c end can grow equally fast, and hence, the usually observed unidirectional growth from the -c direction does not hold any more. These new observations are discussed and rationalized. © 2011 American Chemical Society.|
|Source Title:||Crystal Growth and Design|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 19, 2018
WEB OF SCIENCETM
checked on May 9, 2018
checked on Jun 8, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.