Saccharide-Functionalized Poly(Zn-salphen)-alt-(m- and p-phenyleneethynylene)s as Dynamic Helical Metallopolymers

Chao Zhao; Shuangshuang Meng; Hei-Nga Chan; Xueli Wang; Hung-Wing Li; Michael C. W. Chan

doi:10.1002/anie.202115712

Saccharide-Functionalized Poly(Zn-salphen)-alt-(m- and p-phenyleneethynylene)s as Dynamic Helical Metallopolymers

Chao Zhao, Shuangshuang Meng, Hei-Nga Chan, Xueli Wang, Hung-Wing Li^*, Michael C. W. Chan^*

^*Corresponding author for this work

Department of Chemistry

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

4 Citations (Scopus)

Abstract

The study of metallopolymers with controllable helical sense remains in its infancy. We report arabinose-functionalized (Zn-salphen)-based conjugated polymers that display mirror-image circular dichroism spectra for L- and D-sugar sidechains respectively, signifying ordered (helical) coiling of the polymer backbone with opposite screw-sense preferences. The observation of different spectroscopic behavior and Cotton effects for a variety of solvents (in a reversible manner) and temperatures, ascribed to changes in the extent of intrachain (Zn⋅⋅⋅O(salphen) and π-stacking) interactions between Zn-salphen moieties, thus indicate the flexible, responsive and dynamic nature of the folded helical conformation in these systems. An application study signifying that activity can be governed by the structure and helical sense of the polymer is described.

Original language	English
Article number	e202115712
Journal	Angewandte Chemie (International Edition)
Volume	61
Issue number	9
Online published	30 Dec 2021
DOIs	https://doi.org/10.1002/anie.202115712
Publication status	Published - 21 Feb 2022

Research Keywords

helical structures
metallopolymers
optical activity
Schiff bases
zinc

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RGC-funded

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10.1002/anie.202115712

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@article{0b8c4719fba1454b86c2b5e0447dba86,

title = "Saccharide-Functionalized Poly(Zn-salphen)-alt-(m- and p-phenyleneethynylene)s as Dynamic Helical Metallopolymers",

abstract = "The study of metallopolymers with controllable helical sense remains in its infancy. We report arabinose-functionalized (Zn-salphen)-based conjugated polymers that display mirror-image circular dichroism spectra for L- and D-sugar sidechains respectively, signifying ordered (helical) coiling of the polymer backbone with opposite screw-sense preferences. The observation of different spectroscopic behavior and Cotton effects for a variety of solvents (in a reversible manner) and temperatures, ascribed to changes in the extent of intrachain (Zn⋅⋅⋅O(salphen) and π-stacking) interactions between Zn-salphen moieties, thus indicate the flexible, responsive and dynamic nature of the folded helical conformation in these systems. An application study signifying that activity can be governed by the structure and helical sense of the polymer is described. ",

keywords = "helical structures, metallopolymers, optical activity, Schiff bases, zinc",

author = "Chao Zhao and Shuangshuang Meng and Hei-Nga Chan and Xueli Wang and Hung-Wing Li and Chan, {Michael C. W.}",

year = "2022",

month = feb,

day = "21",

doi = "10.1002/anie.202115712",

language = "English",

volume = "61",

journal = "Angewandte Chemie (International Edition)",

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TY - JOUR

T1 - Saccharide-Functionalized Poly(Zn-salphen)-alt-(m- and p-phenyleneethynylene)s as Dynamic Helical Metallopolymers

AU - Zhao, Chao

AU - Meng, Shuangshuang

AU - Chan, Hei-Nga

AU - Wang, Xueli

AU - Li, Hung-Wing

AU - Chan, Michael C. W.

PY - 2022/2/21

Y1 - 2022/2/21

N2 - The study of metallopolymers with controllable helical sense remains in its infancy. We report arabinose-functionalized (Zn-salphen)-based conjugated polymers that display mirror-image circular dichroism spectra for L- and D-sugar sidechains respectively, signifying ordered (helical) coiling of the polymer backbone with opposite screw-sense preferences. The observation of different spectroscopic behavior and Cotton effects for a variety of solvents (in a reversible manner) and temperatures, ascribed to changes in the extent of intrachain (Zn⋅⋅⋅O(salphen) and π-stacking) interactions between Zn-salphen moieties, thus indicate the flexible, responsive and dynamic nature of the folded helical conformation in these systems. An application study signifying that activity can be governed by the structure and helical sense of the polymer is described.

AB - The study of metallopolymers with controllable helical sense remains in its infancy. We report arabinose-functionalized (Zn-salphen)-based conjugated polymers that display mirror-image circular dichroism spectra for L- and D-sugar sidechains respectively, signifying ordered (helical) coiling of the polymer backbone with opposite screw-sense preferences. The observation of different spectroscopic behavior and Cotton effects for a variety of solvents (in a reversible manner) and temperatures, ascribed to changes in the extent of intrachain (Zn⋅⋅⋅O(salphen) and π-stacking) interactions between Zn-salphen moieties, thus indicate the flexible, responsive and dynamic nature of the folded helical conformation in these systems. An application study signifying that activity can be governed by the structure and helical sense of the polymer is described.

KW - helical structures

KW - metallopolymers

KW - optical activity

KW - Schiff bases

KW - zinc

UR - http://www.scopus.com/inward/record.url?scp=85122881497&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85122881497&origin=recordpage

U2 - 10.1002/anie.202115712

DO - 10.1002/anie.202115712

M3 - RGC 21 - Publication in refereed journal

SN - 1433-7851

VL - 61

JO - Angewandte Chemie (International Edition)

JF - Angewandte Chemie (International Edition)

IS - 9

M1 - e202115712

ER -

Saccharide-Functionalized Poly(Zn-salphen)-alt-(m- and p-phenyleneethynylene)s as Dynamic Helical Metallopolymers

Abstract

Research Keywords

RGC Funding Information

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Poly(Zn-salphen)-alt-(p-phenyleneethynylene)s as Dynamic Helical Metallopolymers: Luminescent Properties and Conformational Behavior

Crowded bis-(M-salphen) [M = Pt(II), Zn(II)] coordination architectures: Luminescent properties and ion-selective responses

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