%0 Journal Article
%A Alam, Parvej
%A Kaur, Gurpreet
%A Sarmah, Amrit
%A Roy, Ram Kinkar
%A Choudhury, Angshuman
Roy
%A Laskar, Inamur Rahaman
%D 2015
%T Highly Selective Detection of H+ and OH– with a Single-Emissive Iridium(III) Complex: A Mild
Approach to Conversion of Non-AIEE to AIEE Complex
%U https://acs.figshare.com/articles/journal_contribution/Highly_Selective_Detection_of_H_sup_sup_and_OH_sup_sup_with_a_Single_Emissive_Iridium_III_Complex_A_Mild_Approach_to_Conversion_of_Non_AIEE_to_AIEE_Complex/2127742
%R 10.1021/acs.organomet.5b00447.s003
%2 https://acs.figshare.com/ndownloader/files/3761545
%K Conversion
%K aspect
%K ligand
%K octahedral
%K OH
%K Mild
%K mode
%K detection
%K Complex
%K acid
%K Detection
%K Selective
%K acidic
%K 2ppy
%K ability
%K emissive
%K ComplexA
%K presence
%K amine
%K Approach
%K medium
%K DFT
%K emission
%K Iridium
%K hydroxide ion
%K iridium
%K 1.
%K nM
%K calculation
%K difluoro
%K AIE
%K rotor
%K mechanism
%K nonchelating
%K AIEE
%K Ir
%X A greenish-blue emissive bis-cyclometalated
iridium(III) complex
with octahedral geometry was synthesized in a convenient route where
a bulky substituted ligand, N1-tritylethane-1,2-diamine ligand (trityl-based rotating unit) (L1), was coordinated to iridium(III)
in nonchelating mode, [Ir(F2ppy)2(L1)(Cl)], [F2ppy = 2-(2′,4′-difluoro)phenylpyridine; L1 = N1-tritylethane-1,2-diamine], 1. The purpose of introducing
a rotor in 1 was anticipated to initiate aggregation-induced
emission (AIE) activity in it. The presence of a secondary amine in L1 has attributed to 1 the ability to sense acids. The mechanism of this change in 1 under acidic medium was explored. A bright yellow emissive
complex was formed on exposing 1 to hydroxide ion, which
was isolated, characterized, and identified as a new aggregation-induced
enhanced emission (AIEE) active complex. The detection limit of hydroxide
ion was determined to 126 nM. Ground- and excited-state properties
of 1 were investigated using DFT- and TD-DFT-based calculations,
and several important aspects of the experimental facts were validated.
%I ACS Publications