Stimulating and harnessing circularly polarized luminescence of
helically assembled carbonized polymer dots via interfacial dynamics
Abstract
Stimulating and harnessing circularly polarized luminescence (CPL) is
not only a sine qua non for fundamentally unveiling chirogenesis
in physical chemistry, and also a pivotal prerequisite for
implementation of such phenomenon in area of chiral optoelectronics and
theranostics. Herein, red-emissive carbonized polymer dots (CPDs)-based
helical structures were synthesized in this work via
biomolecule-tailored organic-inorganic co-assembly strategy. The surface
states related chirality exhibited enhanced circular dichroism (CD) and
CPL activities with anisotropic factors as high as
gCD,max=5.4×10-3 and
glum,max=1.5×10-2 respectively. The
obtained CPL signals can be further manipulated with an
excitation-dependent manner indicating a synergistic-competition
phenomenon is existed between configurational chirality and
intermolecular energy-transfer dynamics, which is further supported by
simulations based on density function theory (DFT). Such tunable CPL
behaviors triggers revolutionary designs and applications of these
chiral CPDs into the realm of chirality-related biological issues and
next generation chiral optoelectronics.