Semiconductor cadmium selenide (CdSe) quantum dots (QDs) exhibited mirror-image circular dichroism (CD) spectra in the visible region (350-570 nm) after replacing the trioctylphosphine oxide/oleic acid ligands on achiral nanocrystals with D- and L-cysteines. Chiroptical properties of cysteine-capped CdSe QDs depend on their size and can be fine-tuned by changing the radius of QDs.

†Institute of Neurosurgery, Inner Mongolia University for Nationalities, No. 1742, Holin River Street, Tongliao, Inner Mongolia Autonomous Region 028007, China. *E-mail: [email protected] College of Pharmacy, Yanbian University, No. 1829, JuZi Street, Yanji, Jilin 133000, China. *E-mail: [email protected] Department of chemistry, Wonkwang University, Iksan, 570-749, Korea Received November...

CONTENTS PERSPECTIVES AND OVERVIEW ...................................... 541 CANONICAL H-DNA .................................................. 544 *H-DNA ............................................................... 553 H-DNA-LIKE-STRUCTURES ........................................... 557 Nodule DNA ........................................................ 558 Eclectic DNA .....................

A practical procedure for synthesizing cellulose nanospheres with sizes ranging from 60 to over 570 nm was developed. This methodology provides a near linear relationship between cellulose nanoparticle size and treatment time. The hydrolyzed nanocelluloses are predominantly cellulose II polymorphic crystalline structure and relatively uniform in particle size. 2007 Elsevier Ltd. All rights rese...