title: Cationic recognition by tert-butylcalix[4]arene-functionalized nanoprobes.
abstract: A nanoparticle-based strategy has been demonstrated using structurally-tailored tert-butylcalixarenes immobilized on gold nanoparticles to tune the guest access to the calixarene cone cavity for cationic recognition. This strategy exploits the interparticle charge-induced aggregation upon selective capture of metal cations into the nanoparticle-immobilized tert-butylcalixarenes, which produces calorimetric changes for the detection. A possible pathway for the binding of M(n+) into the t-BCA structure and the interparticle interaction is proposed for the formation of an electric double layer inducing the interparticle association responsible for the red-shifted surface plasmon resonance band of the nanoparticles. The value of this class of calorimetric nanoprobes will be in the area of designing advanced host-guest probes using a variety of calixarene ligands for ionic recognition in a simplistic detection format.
authors.affiliation: Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, USA.
authors.forename: Hong
authors.initials: H
authors.lastname: Yan
authors.forename: Jin
authors.initials: J
authors.lastname: Luo
authors.forename: Hong-Ming
authors.initials: HM
authors.lastname: Xie
authors.forename: De-Xun
authors.initials: DX
authors.lastname: Xie
authors.forename: Qiong
authors.initials: Q
authors.lastname: Su
authors.forename: Jun
authors.initials: J
authors.lastname: Yin
authors.forename: Bridgid N
authors.initials: BN
authors.lastname: Wanjala
authors.forename: Han
authors.initials: H
authors.lastname: Diao
authors.forename: De-Lie
authors.initials: DL
authors.lastname: An
authors.forename: Chuan-Jian
authors.initials: CJ
authors.lastname: Zhong